Adding debian version 1.37.1-2.debian/1.37.1-2debian

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 9236 insertions, 0 deletions

diff --git a/debian/missing-sources/c3-0.4.18.js b/debian/missing-sources/c3-0.4.18.js
new file mode 100644
index 0000000..d607b17
--- /dev/null
+++ b/debian/missing-sources/c3-0.4.18.js
@@ -0,0 +1,9236 @@
+(function (global, factory) {
+	typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
+	typeof define === 'function' && define.amd ? define(factory) :
+	(global.c3 = factory());
+}(this, (function () { 'use strict';
+
+var CLASS = {
+    target: 'c3-target',
+    chart: 'c3-chart',
+    chartLine: 'c3-chart-line',
+    chartLines: 'c3-chart-lines',
+    chartBar: 'c3-chart-bar',
+    chartBars: 'c3-chart-bars',
+    chartText: 'c3-chart-text',
+    chartTexts: 'c3-chart-texts',
+    chartArc: 'c3-chart-arc',
+    chartArcs: 'c3-chart-arcs',
+    chartArcsTitle: 'c3-chart-arcs-title',
+    chartArcsBackground: 'c3-chart-arcs-background',
+    chartArcsGaugeUnit: 'c3-chart-arcs-gauge-unit',
+    chartArcsGaugeMax: 'c3-chart-arcs-gauge-max',
+    chartArcsGaugeMin: 'c3-chart-arcs-gauge-min',
+    selectedCircle: 'c3-selected-circle',
+    selectedCircles: 'c3-selected-circles',
+    eventRect: 'c3-event-rect',
+    eventRects: 'c3-event-rects',
+    eventRectsSingle: 'c3-event-rects-single',
+    eventRectsMultiple: 'c3-event-rects-multiple',
+    zoomRect: 'c3-zoom-rect',
+    brush: 'c3-brush',
+    focused: 'c3-focused',
+    defocused: 'c3-defocused',
+    region: 'c3-region',
+    regions: 'c3-regions',
+    title: 'c3-title',
+    tooltipContainer: 'c3-tooltip-container',
+    tooltip: 'c3-tooltip',
+    tooltipName: 'c3-tooltip-name',
+    shape: 'c3-shape',
+    shapes: 'c3-shapes',
+    line: 'c3-line',
+    lines: 'c3-lines',
+    bar: 'c3-bar',
+    bars: 'c3-bars',
+    circle: 'c3-circle',
+    circles: 'c3-circles',
+    arc: 'c3-arc',
+    arcs: 'c3-arcs',
+    area: 'c3-area',
+    areas: 'c3-areas',
+    empty: 'c3-empty',
+    text: 'c3-text',
+    texts: 'c3-texts',
+    gaugeValue: 'c3-gauge-value',
+    grid: 'c3-grid',
+    gridLines: 'c3-grid-lines',
+    xgrid: 'c3-xgrid',
+    xgrids: 'c3-xgrids',
+    xgridLine: 'c3-xgrid-line',
+    xgridLines: 'c3-xgrid-lines',
+    xgridFocus: 'c3-xgrid-focus',
+    ygrid: 'c3-ygrid',
+    ygrids: 'c3-ygrids',
+    ygridLine: 'c3-ygrid-line',
+    ygridLines: 'c3-ygrid-lines',
+    axis: 'c3-axis',
+    axisX: 'c3-axis-x',
+    axisXLabel: 'c3-axis-x-label',
+    axisY: 'c3-axis-y',
+    axisYLabel: 'c3-axis-y-label',
+    axisY2: 'c3-axis-y2',
+    axisY2Label: 'c3-axis-y2-label',
+    legendBackground: 'c3-legend-background',
+    legendItem: 'c3-legend-item',
+    legendItemEvent: 'c3-legend-item-event',
+    legendItemTile: 'c3-legend-item-tile',
+    legendItemHidden: 'c3-legend-item-hidden',
+    legendItemFocused: 'c3-legend-item-focused',
+    dragarea: 'c3-dragarea',
+    EXPANDED: '_expanded_',
+    SELECTED: '_selected_',
+    INCLUDED: '_included_'
+};
+
+var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) {
+  return typeof obj;
+} : function (obj) {
+  return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj;
+};
+
+
+
+
+
+
+
+
+
+
+
+var classCallCheck = function (instance, Constructor) {
+  if (!(instance instanceof Constructor)) {
+    throw new TypeError("Cannot call a class as a function");
+  }
+};
+
+
+
+
+
+
+
+
+
+
+
+var inherits = function (subClass, superClass) {
+  if (typeof superClass !== "function" && superClass !== null) {
+    throw new TypeError("Super expression must either be null or a function, not " + typeof superClass);
+  }
+
+  subClass.prototype = Object.create(superClass && superClass.prototype, {
+    constructor: {
+      value: subClass,
+      enumerable: false,
+      writable: true,
+      configurable: true
+    }
+  });
+  if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass;
+};
+
+
+
+
+
+
+
+
+
+
+
+var possibleConstructorReturn = function (self, call) {
+  if (!self) {
+    throw new ReferenceError("this hasn't been initialised - super() hasn't been called");
+  }
+
+  return call && (typeof call === "object" || typeof call === "function") ? call : self;
+};
+
+var isValue = function isValue(v) {
+    return v || v === 0;
+};
+var isFunction = function isFunction(o) {
+    return typeof o === 'function';
+};
+var isArray = function isArray(o) {
+    return Array.isArray(o);
+};
+var isString = function isString(o) {
+    return typeof o === 'string';
+};
+var isUndefined = function isUndefined(v) {
+    return typeof v === 'undefined';
+};
+var isDefined = function isDefined(v) {
+    return typeof v !== 'undefined';
+};
+var ceil10 = function ceil10(v) {
+    return Math.ceil(v / 10) * 10;
+};
+var asHalfPixel = function asHalfPixel(n) {
+    return Math.ceil(n) + 0.5;
+};
+var diffDomain = function diffDomain(d) {
+    return d[1] - d[0];
+};
+var isEmpty = function isEmpty(o) {
+    return typeof o === 'undefined' || o === null || isString(o) && o.length === 0 || (typeof o === 'undefined' ? 'undefined' : _typeof(o)) === 'object' && Object.keys(o).length === 0;
+};
+var notEmpty = function notEmpty(o) {
+    return !c3_chart_internal_fn.isEmpty(o);
+};
+var getOption = function getOption(options, key, defaultValue) {
+    return isDefined(options[key]) ? options[key] : defaultValue;
+};
+var hasValue = function hasValue(dict, value) {
+    var found = false;
+    Object.keys(dict).forEach(function (key) {
+        if (dict[key] === value) {
+            found = true;
+        }
+    });
+    return found;
+};
+var sanitise = function sanitise(str) {
+    return typeof str === 'string' ? str.replace(/</g, '&lt;').replace(/>/g, '&gt;') : str;
+};
+var getPathBox = function getPathBox(path) {
+    var box = path.getBoundingClientRect(),
+        items = [path.pathSegList.getItem(0), path.pathSegList.getItem(1)],
+        minX = items[0].x,
+        minY = Math.min(items[0].y, items[1].y);
+    return { x: minX, y: minY, width: box.width, height: box.height };
+};
+
+var c3_axis_fn;
+var c3_axis_internal_fn;
+
+function AxisInternal(component, params) {
+    var internal = this;
+    internal.component = component;
+    internal.params = params || {};
+
+    internal.d3 = component.d3;
+    internal.scale = internal.d3.scale.linear();
+    internal.range;
+    internal.orient = "bottom";
+    internal.innerTickSize = 6;
+    internal.outerTickSize = this.params.withOuterTick ? 6 : 0;
+    internal.tickPadding = 3;
+    internal.tickValues = null;
+    internal.tickFormat;
+    internal.tickArguments;
+
+    internal.tickOffset = 0;
+    internal.tickCulling = true;
+    internal.tickCentered;
+    internal.tickTextCharSize;
+    internal.tickTextRotate = internal.params.tickTextRotate;
+    internal.tickLength;
+
+    internal.axis = internal.generateAxis();
+}
+c3_axis_internal_fn = AxisInternal.prototype;
+
+c3_axis_internal_fn.axisX = function (selection, x, tickOffset) {
+    selection.attr("transform", function (d) {
+        return "translate(" + Math.ceil(x(d) + tickOffset) + ", 0)";
+    });
+};
+c3_axis_internal_fn.axisY = function (selection, y) {
+    selection.attr("transform", function (d) {
+        return "translate(0," + Math.ceil(y(d)) + ")";
+    });
+};
+c3_axis_internal_fn.scaleExtent = function (domain) {
+    var start = domain[0],
+        stop = domain[domain.length - 1];
+    return start < stop ? [start, stop] : [stop, start];
+};
+c3_axis_internal_fn.generateTicks = function (scale) {
+    var internal = this;
+    var i,
+        domain,
+        ticks = [];
+    if (scale.ticks) {
+        return scale.ticks.apply(scale, internal.tickArguments);
+    }
+    domain = scale.domain();
+    for (i = Math.ceil(domain[0]); i < domain[1]; i++) {
+        ticks.push(i);
+    }
+    if (ticks.length > 0 && ticks[0] > 0) {
+        ticks.unshift(ticks[0] - (ticks[1] - ticks[0]));
+    }
+    return ticks;
+};
+c3_axis_internal_fn.copyScale = function () {
+    var internal = this;
+    var newScale = internal.scale.copy(),
+        domain;
+    if (internal.params.isCategory) {
+        domain = internal.scale.domain();
+        newScale.domain([domain[0], domain[1] - 1]);
+    }
+    return newScale;
+};
+c3_axis_internal_fn.textFormatted = function (v) {
+    var internal = this,
+        formatted = internal.tickFormat ? internal.tickFormat(v) : v;
+    return typeof formatted !== 'undefined' ? formatted : '';
+};
+c3_axis_internal_fn.updateRange = function () {
+    var internal = this;
+    internal.range = internal.scale.rangeExtent ? internal.scale.rangeExtent() : internal.scaleExtent(internal.scale.range());
+    return internal.range;
+};
+c3_axis_internal_fn.updateTickTextCharSize = function (tick) {
+    var internal = this;
+    if (internal.tickTextCharSize) {
+        return internal.tickTextCharSize;
+    }
+    var size = {
+        h: 11.5,
+        w: 5.5
+    };
+    tick.select('text').text(function (d) {
+        return internal.textFormatted(d);
+    }).each(function (d) {
+        var box = this.getBoundingClientRect(),
+            text = internal.textFormatted(d),
+            h = box.height,
+            w = text ? box.width / text.length : undefined;
+        if (h && w) {
+            size.h = h;
+            size.w = w;
+        }
+    }).text('');
+    internal.tickTextCharSize = size;
+    return size;
+};
+c3_axis_internal_fn.transitionise = function (selection) {
+    return this.params.withoutTransition ? selection : this.d3.transition(selection);
+};
+c3_axis_internal_fn.isVertical = function () {
+    return this.orient === 'left' || this.orient === 'right';
+};
+c3_axis_internal_fn.tspanData = function (d, i, ticks, scale) {
+    var internal = this;
+    var splitted = internal.params.tickMultiline ? internal.splitTickText(d, ticks, scale) : [].concat(internal.textFormatted(d));
+    return splitted.map(function (s) {
+        return { index: i, splitted: s, length: splitted.length };
+    });
+};
+c3_axis_internal_fn.splitTickText = function (d, ticks, scale) {
+    var internal = this,
+        tickText = internal.textFormatted(d),
+        maxWidth = internal.params.tickWidth,
+        subtext,
+        spaceIndex,
+        textWidth,
+        splitted = [];
+
+    if (Object.prototype.toString.call(tickText) === "[object Array]") {
+        return tickText;
+    }
+
+    if (!maxWidth || maxWidth <= 0) {
+        maxWidth = internal.isVertical() ? 95 : internal.params.isCategory ? Math.ceil(scale(ticks[1]) - scale(ticks[0])) - 12 : 110;
+    }
+
+    function split(splitted, text) {
+        spaceIndex = undefined;
+        for (var i = 1; i < text.length; i++) {
+            if (text.charAt(i) === ' ') {
+                spaceIndex = i;
+            }
+            subtext = text.substr(0, i + 1);
+            textWidth = internal.tickTextCharSize.w * subtext.length;
+            // if text width gets over tick width, split by space index or crrent index
+            if (maxWidth < textWidth) {
+                return split(splitted.concat(text.substr(0, spaceIndex ? spaceIndex : i)), text.slice(spaceIndex ? spaceIndex + 1 : i));
+            }
+        }
+        return splitted.concat(text);
+    }
+
+    return split(splitted, tickText + "");
+};
+c3_axis_internal_fn.updateTickLength = function () {
+    var internal = this;
+    internal.tickLength = Math.max(internal.innerTickSize, 0) + internal.tickPadding;
+};
+c3_axis_internal_fn.lineY2 = function (d) {
+    var internal = this,
+        tickPosition = internal.scale(d) + (internal.tickCentered ? 0 : internal.tickOffset);
+    return internal.range[0] < tickPosition && tickPosition < internal.range[1] ? internal.innerTickSize : 0;
+};
+c3_axis_internal_fn.textY = function () {
+    var internal = this,
+        rotate = internal.tickTextRotate;
+    return rotate ? 11.5 - 2.5 * (rotate / 15) * (rotate > 0 ? 1 : -1) : internal.tickLength;
+};
+c3_axis_internal_fn.textTransform = function () {
+    var internal = this,
+        rotate = internal.tickTextRotate;
+    return rotate ? "rotate(" + rotate + ")" : "";
+};
+c3_axis_internal_fn.textTextAnchor = function () {
+    var internal = this,
+        rotate = internal.tickTextRotate;
+    return rotate ? rotate > 0 ? "start" : "end" : "middle";
+};
+c3_axis_internal_fn.tspanDx = function () {
+    var internal = this,
+        rotate = internal.tickTextRotate;
+    return rotate ? 8 * Math.sin(Math.PI * (rotate / 180)) : 0;
+};
+c3_axis_internal_fn.tspanDy = function (d, i) {
+    var internal = this,
+        dy = internal.tickTextCharSize.h;
+    if (i === 0) {
+        if (internal.isVertical()) {
+            dy = -((d.length - 1) * (internal.tickTextCharSize.h / 2) - 3);
+        } else {
+            dy = ".71em";
+        }
+    }
+    return dy;
+};
+
+c3_axis_internal_fn.generateAxis = function () {
+    var internal = this,
+        d3 = internal.d3,
+        params = internal.params;
+    function axis(g) {
+        g.each(function () {
+            var g = axis.g = d3.select(this);
+
+            var scale0 = this.__chart__ || internal.scale,
+                scale1 = this.__chart__ = internal.copyScale();
+
+            var ticks = internal.tickValues ? internal.tickValues : internal.generateTicks(scale1),
+                tick = g.selectAll(".tick").data(ticks, scale1),
+                tickEnter = tick.enter().insert("g", ".domain").attr("class", "tick").style("opacity", 1e-6),
+
+            // MEMO: No exit transition. The reason is this transition affects max tick width calculation because old tick will be included in the ticks.
+            tickExit = tick.exit().remove(),
+                tickUpdate = internal.transitionise(tick).style("opacity", 1),
+                tickTransform,
+                tickX,
+                tickY;
+
+            if (params.isCategory) {
+                internal.tickOffset = Math.ceil((scale1(1) - scale1(0)) / 2);
+                tickX = internal.tickCentered ? 0 : internal.tickOffset;
+                tickY = internal.tickCentered ? internal.tickOffset : 0;
+            } else {
+                internal.tickOffset = tickX = 0;
+            }
+
+            tickEnter.append("line");
+            tickEnter.append("text");
+
+            internal.updateRange();
+            internal.updateTickLength();
+            internal.updateTickTextCharSize(g.select('.tick'));
+
+            var lineUpdate = tickUpdate.select("line"),
+                textUpdate = tickUpdate.select("text"),
+                tspanUpdate = tick.select("text").selectAll('tspan').data(function (d, i) {
+                return internal.tspanData(d, i, ticks, scale1);
+            });
+
+            tspanUpdate.enter().append('tspan');
+            tspanUpdate.exit().remove();
+            tspanUpdate.text(function (d) {
+                return d.splitted;
+            });
+
+            var path = g.selectAll(".domain").data([0]),
+                pathUpdate = (path.enter().append("path").attr("class", "domain"), internal.transitionise(path));
+
+            // TODO: each attr should be one function and change its behavior by internal.orient, probably
+            switch (internal.orient) {
+                case "bottom":
+                    {
+                        tickTransform = internal.axisX;
+                        lineUpdate.attr("x1", tickX).attr("x2", tickX).attr("y2", function (d, i) {
+                            return internal.lineY2(d, i);
+                        });
+                        textUpdate.attr("x", 0).attr("y", function (d, i) {
+                            return internal.textY(d, i);
+                        }).attr("transform", function (d, i) {
+                            return internal.textTransform(d, i);
+                        }).style("text-anchor", function (d, i) {
+                            return internal.textTextAnchor(d, i);
+                        });
+                        tspanUpdate.attr('x', 0).attr("dy", function (d, i) {
+                            return internal.tspanDy(d, i);
+                        }).attr('dx', function (d, i) {
+                            return internal.tspanDx(d, i);
+                        });
+                        pathUpdate.attr("d", "M" + internal.range[0] + "," + internal.outerTickSize + "V0H" + internal.range[1] + "V" + internal.outerTickSize);
+                        break;
+                    }
+                case "top":
+                    {
+                        // TODO: rotated tick text
+                        tickTransform = internal.axisX;
+                        lineUpdate.attr("x2", 0).attr("y2", -internal.innerTickSize);
+                        textUpdate.attr("x", 0).attr("y", -internal.tickLength).style("text-anchor", "middle");
+                        tspanUpdate.attr('x', 0).attr("dy", "0em");
+                        pathUpdate.attr("d", "M" + internal.range[0] + "," + -internal.outerTickSize + "V0H" + internal.range[1] + "V" + -internal.outerTickSize);
+                        break;
+                    }
+                case "left":
+                    {
+                        tickTransform = internal.axisY;
+                        lineUpdate.attr("x2", -internal.innerTickSize).attr("y1", tickY).attr("y2", tickY);
+                        textUpdate.attr("x", -internal.tickLength).attr("y", internal.tickOffset).style("text-anchor", "end");
+                        tspanUpdate.attr('x', -internal.tickLength).attr("dy", function (d, i) {
+                            return internal.tspanDy(d, i);
+                        });
+                        pathUpdate.attr("d", "M" + -internal.outerTickSize + "," + internal.range[0] + "H0V" + internal.range[1] + "H" + -internal.outerTickSize);
+                        break;
+                    }
+                case "right":
+                    {
+                        tickTransform = internal.axisY;
+                        lineUpdate.attr("x2", internal.innerTickSize).attr("y2", 0);
+                        textUpdate.attr("x", internal.tickLength).attr("y", 0).style("text-anchor", "start");
+                        tspanUpdate.attr('x', internal.tickLength).attr("dy", function (d, i) {
+                            return internal.tspanDy(d, i);
+                        });
+                        pathUpdate.attr("d", "M" + internal.outerTickSize + "," + internal.range[0] + "H0V" + internal.range[1] + "H" + internal.outerTickSize);
+                        break;
+                    }
+            }
+            if (scale1.rangeBand) {
+                var x = scale1,
+                    dx = x.rangeBand() / 2;
+                scale0 = scale1 = function scale1(d) {
+                    return x(d) + dx;
+                };
+            } else if (scale0.rangeBand) {
+                scale0 = scale1;
+            } else {
+                tickExit.call(tickTransform, scale1, internal.tickOffset);
+            }
+            tickEnter.call(tickTransform, scale0, internal.tickOffset);
+            tickUpdate.call(tickTransform, scale1, internal.tickOffset);
+        });
+    }
+    axis.scale = function (x) {
+        if (!arguments.length) {
+            return internal.scale;
+        }
+        internal.scale = x;
+        return axis;
+    };
+    axis.orient = function (x) {
+        if (!arguments.length) {
+            return internal.orient;
+        }
+        internal.orient = x in { top: 1, right: 1, bottom: 1, left: 1 } ? x + "" : "bottom";
+        return axis;
+    };
+    axis.tickFormat = function (format) {
+        if (!arguments.length) {
+            return internal.tickFormat;
+        }
+        internal.tickFormat = format;
+        return axis;
+    };
+    axis.tickCentered = function (isCentered) {
+        if (!arguments.length) {
+            return internal.tickCentered;
+        }
+        internal.tickCentered = isCentered;
+        return axis;
+    };
+    axis.tickOffset = function () {
+        return internal.tickOffset;
+    };
+    axis.tickInterval = function () {
+        var interval, length;
+        if (params.isCategory) {
+            interval = internal.tickOffset * 2;
+        } else {
+            length = axis.g.select('path.domain').node().getTotalLength() - internal.outerTickSize * 2;
+            interval = length / axis.g.selectAll('line').size();
+        }
+        return interval === Infinity ? 0 : interval;
+    };
+    axis.ticks = function () {
+        if (!arguments.length) {
+            return internal.tickArguments;
+        }
+        internal.tickArguments = arguments;
+        return axis;
+    };
+    axis.tickCulling = function (culling) {
+        if (!arguments.length) {
+            return internal.tickCulling;
+        }
+        internal.tickCulling = culling;
+        return axis;
+    };
+    axis.tickValues = function (x) {
+        if (typeof x === 'function') {
+            internal.tickValues = function () {
+                return x(internal.scale.domain());
+            };
+        } else {
+            if (!arguments.length) {
+                return internal.tickValues;
+            }
+            internal.tickValues = x;
+        }
+        return axis;
+    };
+    return axis;
+};
+
+var Axis = function (_Component) {
+    inherits(Axis, _Component);
+
+    function Axis(owner) {
+        classCallCheck(this, Axis);
+
+        var fn = {
+            fn: c3_axis_fn,
+            internal: {
+                fn: c3_axis_internal_fn
+            }
+        };
+
+        var _this = possibleConstructorReturn(this, (Axis.__proto__ || Object.getPrototypeOf(Axis)).call(this, owner, 'axis', fn));
+
+        _this.d3 = owner.d3;
+        _this.internal = AxisInternal;
+        return _this;
+    }
+
+    return Axis;
+}(Component);
+
+c3_axis_fn = Axis.prototype;
+
+c3_axis_fn.init = function init() {
+    var $$ = this.owner,
+        config = $$.config,
+        main = $$.main;
+    $$.axes.x = main.append("g").attr("class", CLASS.axis + ' ' + CLASS.axisX).attr("clip-path", $$.clipPathForXAxis).attr("transform", $$.getTranslate('x')).style("visibility", config.axis_x_show ? 'visible' : 'hidden');
+    $$.axes.x.append("text").attr("class", CLASS.axisXLabel).attr("transform", config.axis_rotated ? "rotate(-90)" : "").style("text-anchor", this.textAnchorForXAxisLabel.bind(this));
+    $$.axes.y = main.append("g").attr("class", CLASS.axis + ' ' + CLASS.axisY).attr("clip-path", config.axis_y_inner ? "" : $$.clipPathForYAxis).attr("transform", $$.getTranslate('y')).style("visibility", config.axis_y_show ? 'visible' : 'hidden');
+    $$.axes.y.append("text").attr("class", CLASS.axisYLabel).attr("transform", config.axis_rotated ? "" : "rotate(-90)").style("text-anchor", this.textAnchorForYAxisLabel.bind(this));
+
+    $$.axes.y2 = main.append("g").attr("class", CLASS.axis + ' ' + CLASS.axisY2
+    // clip-path?
+    ).attr("transform", $$.getTranslate('y2')).style("visibility", config.axis_y2_show ? 'visible' : 'hidden');
+    $$.axes.y2.append("text").attr("class", CLASS.axisY2Label).attr("transform", config.axis_rotated ? "" : "rotate(-90)").style("text-anchor", this.textAnchorForY2AxisLabel.bind(this));
+};
+c3_axis_fn.getXAxis = function getXAxis(scale, orient, tickFormat, tickValues, withOuterTick, withoutTransition, withoutRotateTickText) {
+    var $$ = this.owner,
+        config = $$.config,
+        axisParams = {
+        isCategory: $$.isCategorized(),
+        withOuterTick: withOuterTick,
+        tickMultiline: config.axis_x_tick_multiline,
+        tickWidth: config.axis_x_tick_width,
+        tickTextRotate: withoutRotateTickText ? 0 : config.axis_x_tick_rotate,
+        withoutTransition: withoutTransition
+    },
+        axis = new this.internal(this, axisParams).axis.scale(scale).orient(orient);
+
+    if ($$.isTimeSeries() && tickValues && typeof tickValues !== "function") {
+        tickValues = tickValues.map(function (v) {
+            return $$.parseDate(v);
+        });
+    }
+
+    // Set tick
+    axis.tickFormat(tickFormat).tickValues(tickValues);
+    if ($$.isCategorized()) {
+        axis.tickCentered(config.axis_x_tick_centered);
+        if (isEmpty(config.axis_x_tick_culling)) {
+            config.axis_x_tick_culling = false;
+        }
+    }
+
+    return axis;
+};
+c3_axis_fn.updateXAxisTickValues = function updateXAxisTickValues(targets, axis) {
+    var $$ = this.owner,
+        config = $$.config,
+        tickValues;
+    if (config.axis_x_tick_fit || config.axis_x_tick_count) {
+        tickValues = this.generateTickValues($$.mapTargetsToUniqueXs(targets), config.axis_x_tick_count, $$.isTimeSeries());
+    }
+    if (axis) {
+        axis.tickValues(tickValues);
+    } else {
+        $$.xAxis.tickValues(tickValues);
+        $$.subXAxis.tickValues(tickValues);
+    }
+    return tickValues;
+};
+c3_axis_fn.getYAxis = function getYAxis(scale, orient, tickFormat, tickValues, withOuterTick, withoutTransition, withoutRotateTickText) {
+    var $$ = this.owner,
+        config = $$.config,
+        axisParams = {
+        withOuterTick: withOuterTick,
+        withoutTransition: withoutTransition,
+        tickTextRotate: withoutRotateTickText ? 0 : config.axis_y_tick_rotate
+    },
+        axis = new this.internal(this, axisParams).axis.scale(scale).orient(orient).tickFormat(tickFormat);
+    if ($$.isTimeSeriesY()) {
+        axis.ticks($$.d3.time[config.axis_y_tick_time_value], config.axis_y_tick_time_interval);
+    } else {
+        axis.tickValues(tickValues);
+    }
+    return axis;
+};
+c3_axis_fn.getId = function getId(id) {
+    var config = this.owner.config;
+    return id in config.data_axes ? config.data_axes[id] : 'y';
+};
+c3_axis_fn.getXAxisTickFormat = function getXAxisTickFormat() {
+    var $$ = this.owner,
+        config = $$.config,
+        format = $$.isTimeSeries() ? $$.defaultAxisTimeFormat : $$.isCategorized() ? $$.categoryName : function (v) {
+        return v < 0 ? v.toFixed(0) : v;
+    };
+    if (config.axis_x_tick_format) {
+        if (isFunction(config.axis_x_tick_format)) {
+            format = config.axis_x_tick_format;
+        } else if ($$.isTimeSeries()) {
+            format = function format(date) {
+                return date ? $$.axisTimeFormat(config.axis_x_tick_format)(date) : "";
+            };
+        }
+    }
+    return isFunction(format) ? function (v) {
+        return format.call($$, v);
+    } : format;
+};
+c3_axis_fn.getTickValues = function getTickValues(tickValues, axis) {
+    return tickValues ? tickValues : axis ? axis.tickValues() : undefined;
+};
+c3_axis_fn.getXAxisTickValues = function getXAxisTickValues() {
+    return this.getTickValues(this.owner.config.axis_x_tick_values, this.owner.xAxis);
+};
+c3_axis_fn.getYAxisTickValues = function getYAxisTickValues() {
+    return this.getTickValues(this.owner.config.axis_y_tick_values, this.owner.yAxis);
+};
+c3_axis_fn.getY2AxisTickValues = function getY2AxisTickValues() {
+    return this.getTickValues(this.owner.config.axis_y2_tick_values, this.owner.y2Axis);
+};
+c3_axis_fn.getLabelOptionByAxisId = function getLabelOptionByAxisId(axisId) {
+    var $$ = this.owner,
+        config = $$.config,
+        option;
+    if (axisId === 'y') {
+        option = config.axis_y_label;
+    } else if (axisId === 'y2') {
+        option = config.axis_y2_label;
+    } else if (axisId === 'x') {
+        option = config.axis_x_label;
+    }
+    return option;
+};
+c3_axis_fn.getLabelText = function getLabelText(axisId) {
+    var option = this.getLabelOptionByAxisId(axisId);
+    return isString(option) ? option : option ? option.text : null;
+};
+c3_axis_fn.setLabelText = function setLabelText(axisId, text) {
+    var $$ = this.owner,
+        config = $$.config,
+        option = this.getLabelOptionByAxisId(axisId);
+    if (isString(option)) {
+        if (axisId === 'y') {
+            config.axis_y_label = text;
+        } else if (axisId === 'y2') {
+            config.axis_y2_label = text;
+        } else if (axisId === 'x') {
+            config.axis_x_label = text;
+        }
+    } else if (option) {
+        option.text = text;
+    }
+};
+c3_axis_fn.getLabelPosition = function getLabelPosition(axisId, defaultPosition) {
+    var option = this.getLabelOptionByAxisId(axisId),
+        position = option && (typeof option === 'undefined' ? 'undefined' : _typeof(option)) === 'object' && option.position ? option.position : defaultPosition;
+    return {
+        isInner: position.indexOf('inner') >= 0,
+        isOuter: position.indexOf('outer') >= 0,
+        isLeft: position.indexOf('left') >= 0,
+        isCenter: position.indexOf('center') >= 0,
+        isRight: position.indexOf('right') >= 0,
+        isTop: position.indexOf('top') >= 0,
+        isMiddle: position.indexOf('middle') >= 0,
+        isBottom: position.indexOf('bottom') >= 0
+    };
+};
+c3_axis_fn.getXAxisLabelPosition = function getXAxisLabelPosition() {
+    return this.getLabelPosition('x', this.owner.config.axis_rotated ? 'inner-top' : 'inner-right');
+};
+c3_axis_fn.getYAxisLabelPosition = function getYAxisLabelPosition() {
+    return this.getLabelPosition('y', this.owner.config.axis_rotated ? 'inner-right' : 'inner-top');
+};
+c3_axis_fn.getY2AxisLabelPosition = function getY2AxisLabelPosition() {
+    return this.getLabelPosition('y2', this.owner.config.axis_rotated ? 'inner-right' : 'inner-top');
+};
+c3_axis_fn.getLabelPositionById = function getLabelPositionById(id) {
+    return id === 'y2' ? this.getY2AxisLabelPosition() : id === 'y' ? this.getYAxisLabelPosition() : this.getXAxisLabelPosition();
+};
+c3_axis_fn.textForXAxisLabel = function textForXAxisLabel() {
+    return this.getLabelText('x');
+};
+c3_axis_fn.textForYAxisLabel = function textForYAxisLabel() {
+    return this.getLabelText('y');
+};
+c3_axis_fn.textForY2AxisLabel = function textForY2AxisLabel() {
+    return this.getLabelText('y2');
+};
+c3_axis_fn.xForAxisLabel = function xForAxisLabel(forHorizontal, position) {
+    var $$ = this.owner;
+    if (forHorizontal) {
+        return position.isLeft ? 0 : position.isCenter ? $$.width / 2 : $$.width;
+    } else {
+        return position.isBottom ? -$$.height : position.isMiddle ? -$$.height / 2 : 0;
+    }
+};
+c3_axis_fn.dxForAxisLabel = function dxForAxisLabel(forHorizontal, position) {
+    if (forHorizontal) {
+        return position.isLeft ? "0.5em" : position.isRight ? "-0.5em" : "0";
+    } else {
+        return position.isTop ? "-0.5em" : position.isBottom ? "0.5em" : "0";
+    }
+};
+c3_axis_fn.textAnchorForAxisLabel = function textAnchorForAxisLabel(forHorizontal, position) {
+    if (forHorizontal) {
+        return position.isLeft ? 'start' : position.isCenter ? 'middle' : 'end';
+    } else {
+        return position.isBottom ? 'start' : position.isMiddle ? 'middle' : 'end';
+    }
+};
+c3_axis_fn.xForXAxisLabel = function xForXAxisLabel() {
+    return this.xForAxisLabel(!this.owner.config.axis_rotated, this.getXAxisLabelPosition());
+};
+c3_axis_fn.xForYAxisLabel = function xForYAxisLabel() {
+    return this.xForAxisLabel(this.owner.config.axis_rotated, this.getYAxisLabelPosition());
+};
+c3_axis_fn.xForY2AxisLabel = function xForY2AxisLabel() {
+    return this.xForAxisLabel(this.owner.config.axis_rotated, this.getY2AxisLabelPosition());
+};
+c3_axis_fn.dxForXAxisLabel = function dxForXAxisLabel() {
+    return this.dxForAxisLabel(!this.owner.config.axis_rotated, this.getXAxisLabelPosition());
+};
+c3_axis_fn.dxForYAxisLabel = function dxForYAxisLabel() {
+    return this.dxForAxisLabel(this.owner.config.axis_rotated, this.getYAxisLabelPosition());
+};
+c3_axis_fn.dxForY2AxisLabel = function dxForY2AxisLabel() {
+    return this.dxForAxisLabel(this.owner.config.axis_rotated, this.getY2AxisLabelPosition());
+};
+c3_axis_fn.dyForXAxisLabel = function dyForXAxisLabel() {
+    var $$ = this.owner,
+        config = $$.config,
+        position = this.getXAxisLabelPosition();
+    if (config.axis_rotated) {
+        return position.isInner ? "1.2em" : -25 - this.getMaxTickWidth('x');
+    } else {
+        return position.isInner ? "-0.5em" : config.axis_x_height ? config.axis_x_height - 10 : "3em";
+    }
+};
+c3_axis_fn.dyForYAxisLabel = function dyForYAxisLabel() {
+    var $$ = this.owner,
+        position = this.getYAxisLabelPosition();
+    if ($$.config.axis_rotated) {
+        return position.isInner ? "-0.5em" : "3em";
+    } else {
+        return position.isInner ? "1.2em" : -10 - ($$.config.axis_y_inner ? 0 : this.getMaxTickWidth('y') + 10);
+    }
+};
+c3_axis_fn.dyForY2AxisLabel = function dyForY2AxisLabel() {
+    var $$ = this.owner,
+        position = this.getY2AxisLabelPosition();
+    if ($$.config.axis_rotated) {
+        return position.isInner ? "1.2em" : "-2.2em";
+    } else {
+        return position.isInner ? "-0.5em" : 15 + ($$.config.axis_y2_inner ? 0 : this.getMaxTickWidth('y2') + 15);
+    }
+};
+c3_axis_fn.textAnchorForXAxisLabel = function textAnchorForXAxisLabel() {
+    var $$ = this.owner;
+    return this.textAnchorForAxisLabel(!$$.config.axis_rotated, this.getXAxisLabelPosition());
+};
+c3_axis_fn.textAnchorForYAxisLabel = function textAnchorForYAxisLabel() {
+    var $$ = this.owner;
+    return this.textAnchorForAxisLabel($$.config.axis_rotated, this.getYAxisLabelPosition());
+};
+c3_axis_fn.textAnchorForY2AxisLabel = function textAnchorForY2AxisLabel() {
+    var $$ = this.owner;
+    return this.textAnchorForAxisLabel($$.config.axis_rotated, this.getY2AxisLabelPosition());
+};
+c3_axis_fn.getMaxTickWidth = function getMaxTickWidth(id, withoutRecompute) {
+    var $$ = this.owner,
+        config = $$.config,
+        maxWidth = 0,
+        targetsToShow,
+        scale,
+        axis,
+        dummy,
+        svg;
+    if (withoutRecompute && $$.currentMaxTickWidths[id]) {
+        return $$.currentMaxTickWidths[id];
+    }
+    if ($$.svg) {
+        targetsToShow = $$.filterTargetsToShow($$.data.targets);
+        if (id === 'y') {
+            scale = $$.y.copy().domain($$.getYDomain(targetsToShow, 'y'));
+            axis = this.getYAxis(scale, $$.yOrient, config.axis_y_tick_format, $$.yAxisTickValues, false, true, true);
+        } else if (id === 'y2') {
+            scale = $$.y2.copy().domain($$.getYDomain(targetsToShow, 'y2'));
+            axis = this.getYAxis(scale, $$.y2Orient, config.axis_y2_tick_format, $$.y2AxisTickValues, false, true, true);
+        } else {
+            scale = $$.x.copy().domain($$.getXDomain(targetsToShow));
+            axis = this.getXAxis(scale, $$.xOrient, $$.xAxisTickFormat, $$.xAxisTickValues, false, true, true);
+            this.updateXAxisTickValues(targetsToShow, axis);
+        }
+        dummy = $$.d3.select('body').append('div').classed('c3', true);
+        svg = dummy.append("svg").style('visibility', 'hidden').style('position', 'fixed').style('top', 0).style('left', 0), svg.append('g').call(axis).each(function () {
+            $$.d3.select(this).selectAll('text').each(function () {
+                var box = this.getBoundingClientRect();
+                if (maxWidth < box.width) {
+                    maxWidth = box.width;
+                }
+            });
+            dummy.remove();
+        });
+    }
+    $$.currentMaxTickWidths[id] = maxWidth <= 0 ? $$.currentMaxTickWidths[id] : maxWidth;
+    return $$.currentMaxTickWidths[id];
+};
+
+c3_axis_fn.updateLabels = function updateLabels(withTransition) {
+    var $$ = this.owner;
+    var axisXLabel = $$.main.select('.' + CLASS.axisX + ' .' + CLASS.axisXLabel),
+        axisYLabel = $$.main.select('.' + CLASS.axisY + ' .' + CLASS.axisYLabel),
+        axisY2Label = $$.main.select('.' + CLASS.axisY2 + ' .' + CLASS.axisY2Label);
+    (withTransition ? axisXLabel.transition() : axisXLabel).attr("x", this.xForXAxisLabel.bind(this)).attr("dx", this.dxForXAxisLabel.bind(this)).attr("dy", this.dyForXAxisLabel.bind(this)).text(this.textForXAxisLabel.bind(this));
+    (withTransition ? axisYLabel.transition() : axisYLabel).attr("x", this.xForYAxisLabel.bind(this)).attr("dx", this.dxForYAxisLabel.bind(this)).attr("dy", this.dyForYAxisLabel.bind(this)).text(this.textForYAxisLabel.bind(this));
+    (withTransition ? axisY2Label.transition() : axisY2Label).attr("x", this.xForY2AxisLabel.bind(this)).attr("dx", this.dxForY2AxisLabel.bind(this)).attr("dy", this.dyForY2AxisLabel.bind(this)).text(this.textForY2AxisLabel.bind(this));
+};
+c3_axis_fn.getPadding = function getPadding(padding, key, defaultValue, domainLength) {
+    var p = typeof padding === 'number' ? padding : padding[key];
+    if (!isValue(p)) {
+        return defaultValue;
+    }
+    if (padding.unit === 'ratio') {
+        return padding[key] * domainLength;
+    }
+    // assume padding is pixels if unit is not specified
+    return this.convertPixelsToAxisPadding(p, domainLength);
+};
+c3_axis_fn.convertPixelsToAxisPadding = function convertPixelsToAxisPadding(pixels, domainLength) {
+    var $$ = this.owner,
+        length = $$.config.axis_rotated ? $$.width : $$.height;
+    return domainLength * (pixels / length);
+};
+c3_axis_fn.generateTickValues = function generateTickValues(values, tickCount, forTimeSeries) {
+    var tickValues = values,
+        targetCount,
+        start,
+        end,
+        count,
+        interval,
+        i,
+        tickValue;
+    if (tickCount) {
+        targetCount = isFunction(tickCount) ? tickCount() : tickCount;
+        // compute ticks according to tickCount
+        if (targetCount === 1) {
+            tickValues = [values[0]];
+        } else if (targetCount === 2) {
+            tickValues = [values[0], values[values.length - 1]];
+        } else if (targetCount > 2) {
+            count = targetCount - 2;
+            start = values[0];
+            end = values[values.length - 1];
+            interval = (end - start) / (count + 1);
+            // re-construct unique values
+            tickValues = [start];
+            for (i = 0; i < count; i++) {
+                tickValue = +start + interval * (i + 1);
+                tickValues.push(forTimeSeries ? new Date(tickValue) : tickValue);
+            }
+            tickValues.push(end);
+        }
+    }
+    if (!forTimeSeries) {
+        tickValues = tickValues.sort(function (a, b) {
+            return a - b;
+        });
+    }
+    return tickValues;
+};
+c3_axis_fn.generateTransitions = function generateTransitions(duration) {
+    var $$ = this.owner,
+        axes = $$.axes;
+    return {
+        axisX: duration ? axes.x.transition().duration(duration) : axes.x,
+        axisY: duration ? axes.y.transition().duration(duration) : axes.y,
+        axisY2: duration ? axes.y2.transition().duration(duration) : axes.y2,
+        axisSubX: duration ? axes.subx.transition().duration(duration) : axes.subx
+    };
+};
+c3_axis_fn.redraw = function redraw(transitions, isHidden) {
+    var $$ = this.owner;
+    $$.axes.x.style("opacity", isHidden ? 0 : 1);
+    $$.axes.y.style("opacity", isHidden ? 0 : 1);
+    $$.axes.y2.style("opacity", isHidden ? 0 : 1);
+    $$.axes.subx.style("opacity", isHidden ? 0 : 1);
+    transitions.axisX.call($$.xAxis);
+    transitions.axisY.call($$.yAxis);
+    transitions.axisY2.call($$.y2Axis);
+    transitions.axisSubX.call($$.subXAxis);
+};
+
+var c3$1 = { version: "0.4.18" };
+
+var c3_chart_fn;
+var c3_chart_internal_fn;
+
+function Component(owner, componentKey, fn) {
+    this.owner = owner;
+    c3$1.chart.internal[componentKey] = fn;
+}
+
+function Chart(config) {
+    var $$ = this.internal = new ChartInternal(this);
+    $$.loadConfig(config);
+
+    $$.beforeInit(config);
+    $$.init();
+    $$.afterInit(config);
+
+    // bind "this" to nested API
+    (function bindThis(fn, target, argThis) {
+        Object.keys(fn).forEach(function (key) {
+            target[key] = fn[key].bind(argThis);
+            if (Object.keys(fn[key]).length > 0) {
+                bindThis(fn[key], target[key], argThis);
+            }
+        });
+    })(c3_chart_fn, this, this);
+}
+
+function ChartInternal(api) {
+    var $$ = this;
+    $$.d3 = window.d3 ? window.d3 : typeof require !== 'undefined' ? require("d3") : undefined;
+    $$.api = api;
+    $$.config = $$.getDefaultConfig();
+    $$.data = {};
+    $$.cache = {};
+    $$.axes = {};
+}
+
+c3$1.generate = function (config) {
+    return new Chart(config);
+};
+
+c3$1.chart = {
+    fn: Chart.prototype,
+    internal: {
+        fn: ChartInternal.prototype
+    }
+};
+c3_chart_fn = c3$1.chart.fn;
+c3_chart_internal_fn = c3$1.chart.internal.fn;
+
+c3_chart_internal_fn.beforeInit = function () {
+    // can do something
+};
+c3_chart_internal_fn.afterInit = function () {
+    // can do something
+};
+c3_chart_internal_fn.init = function () {
+    var $$ = this,
+        config = $$.config;
+
+    $$.initParams();
+
+    if (config.data_url) {
+        $$.convertUrlToData(config.data_url, config.data_mimeType, config.data_headers, config.data_keys, $$.initWithData);
+    } else if (config.data_json) {
+        $$.initWithData($$.convertJsonToData(config.data_json, config.data_keys));
+    } else if (config.data_rows) {
+        $$.initWithData($$.convertRowsToData(config.data_rows));
+    } else if (config.data_columns) {
+        $$.initWithData($$.convertColumnsToData(config.data_columns));
+    } else {
+        throw Error('url or json or rows or columns is required.');
+    }
+};
+
+c3_chart_internal_fn.initParams = function () {
+    var $$ = this,
+        d3 = $$.d3,
+        config = $$.config;
+
+    // MEMO: clipId needs to be unique because it conflicts when multiple charts exist
+    $$.clipId = "c3-" + +new Date() + '-clip', $$.clipIdForXAxis = $$.clipId + '-xaxis', $$.clipIdForYAxis = $$.clipId + '-yaxis', $$.clipIdForGrid = $$.clipId + '-grid', $$.clipIdForSubchart = $$.clipId + '-subchart', $$.clipPath = $$.getClipPath($$.clipId), $$.clipPathForXAxis = $$.getClipPath($$.clipIdForXAxis), $$.clipPathForYAxis = $$.getClipPath($$.clipIdForYAxis);
+    $$.clipPathForGrid = $$.getClipPath($$.clipIdForGrid), $$.clipPathForSubchart = $$.getClipPath($$.clipIdForSubchart), $$.dragStart = null;
+    $$.dragging = false;
+    $$.flowing = false;
+    $$.cancelClick = false;
+    $$.mouseover = false;
+    $$.transiting = false;
+
+    $$.color = $$.generateColor();
+    $$.levelColor = $$.generateLevelColor();
+
+    $$.dataTimeFormat = config.data_xLocaltime ? d3.time.format : d3.time.format.utc;
+    $$.axisTimeFormat = config.axis_x_localtime ? d3.time.format : d3.time.format.utc;
+    $$.defaultAxisTimeFormat = $$.axisTimeFormat.multi([[".%L", function (d) {
+        return d.getMilliseconds();
+    }], [":%S", function (d) {
+        return d.getSeconds();
+    }], ["%I:%M", function (d) {
+        return d.getMinutes();
+    }], ["%I %p", function (d) {
+        return d.getHours();
+    }], ["%-m/%-d", function (d) {
+        return d.getDay() && d.getDate() !== 1;
+    }], ["%-m/%-d", function (d) {
+        return d.getDate() !== 1;
+    }], ["%-m/%-d", function (d) {
+        return d.getMonth();
+    }], ["%Y/%-m/%-d", function () {
+        return true;
+    }]]);
+
+    $$.hiddenTargetIds = [];
+    $$.hiddenLegendIds = [];
+    $$.focusedTargetIds = [];
+    $$.defocusedTargetIds = [];
+
+    $$.xOrient = config.axis_rotated ? "left" : "bottom";
+    $$.yOrient = config.axis_rotated ? config.axis_y_inner ? "top" : "bottom" : config.axis_y_inner ? "right" : "left";
+    $$.y2Orient = config.axis_rotated ? config.axis_y2_inner ? "bottom" : "top" : config.axis_y2_inner ? "left" : "right";
+    $$.subXOrient = config.axis_rotated ? "left" : "bottom";
+
+    $$.isLegendRight = config.legend_position === 'right';
+    $$.isLegendInset = config.legend_position === 'inset';
+    $$.isLegendTop = config.legend_inset_anchor === 'top-left' || config.legend_inset_anchor === 'top-right';
+    $$.isLegendLeft = config.legend_inset_anchor === 'top-left' || config.legend_inset_anchor === 'bottom-left';
+    $$.legendStep = 0;
+    $$.legendItemWidth = 0;
+    $$.legendItemHeight = 0;
+
+    $$.currentMaxTickWidths = {
+        x: 0,
+        y: 0,
+        y2: 0
+    };
+
+    $$.rotated_padding_left = 30;
+    $$.rotated_padding_right = config.axis_rotated && !config.axis_x_show ? 0 : 30;
+    $$.rotated_padding_top = 5;
+
+    $$.withoutFadeIn = {};
+
+    $$.intervalForObserveInserted = undefined;
+
+    $$.axes.subx = d3.selectAll([]); // needs when excluding subchart.js
+};
+
+c3_chart_internal_fn.initChartElements = function () {
+    if (this.initBar) {
+        this.initBar();
+    }
+    if (this.initLine) {
+        this.initLine();
+    }
+    if (this.initArc) {
+        this.initArc();
+    }
+    if (this.initGauge) {
+        this.initGauge();
+    }
+    if (this.initText) {
+        this.initText();
+    }
+};
+
+c3_chart_internal_fn.initWithData = function (data) {
+    var $$ = this,
+        d3 = $$.d3,
+        config = $$.config;
+    var defs,
+        main,
+        binding = true;
+
+    $$.axis = new Axis($$);
+
+    if ($$.initPie) {
+        $$.initPie();
+    }
+    if ($$.initBrush) {
+        $$.initBrush();
+    }
+    if ($$.initZoom) {
+        $$.initZoom();
+    }
+
+    if (!config.bindto) {
+        $$.selectChart = d3.selectAll([]);
+    } else if (typeof config.bindto.node === 'function') {
+        $$.selectChart = config.bindto;
+    } else {
+        $$.selectChart = d3.select(config.bindto);
+    }
+    if ($$.selectChart.empty()) {
+        $$.selectChart = d3.select(document.createElement('div')).style('opacity', 0);
+        $$.observeInserted($$.selectChart);
+        binding = false;
+    }
+    $$.selectChart.html("").classed("c3", true);
+
+    // Init data as targets
+    $$.data.xs = {};
+    $$.data.targets = $$.convertDataToTargets(data);
+
+    if (config.data_filter) {
+        $$.data.targets = $$.data.targets.filter(config.data_filter);
+    }
+
+    // Set targets to hide if needed
+    if (config.data_hide) {
+        $$.addHiddenTargetIds(config.data_hide === true ? $$.mapToIds($$.data.targets) : config.data_hide);
+    }
+    if (config.legend_hide) {
+        $$.addHiddenLegendIds(config.legend_hide === true ? $$.mapToIds($$.data.targets) : config.legend_hide);
+    }
+
+    // when gauge, hide legend // TODO: fix
+    if ($$.hasType('gauge')) {
+        config.legend_show = false;
+    }
+
+    // Init sizes and scales
+    $$.updateSizes();
+    $$.updateScales();
+
+    // Set domains for each scale
+    $$.x.domain(d3.extent($$.getXDomain($$.data.targets)));
+    $$.y.domain($$.getYDomain($$.data.targets, 'y'));
+    $$.y2.domain($$.getYDomain($$.data.targets, 'y2'));
+    $$.subX.domain($$.x.domain());
+    $$.subY.domain($$.y.domain());
+    $$.subY2.domain($$.y2.domain());
+
+    // Save original x domain for zoom update
+    $$.orgXDomain = $$.x.domain();
+
+    // Set initialized scales to brush and zoom
+    if ($$.brush) {
+        $$.brush.scale($$.subX);
+    }
+    if (config.zoom_enabled) {
+        $$.zoom.scale($$.x);
+    }
+
+    /*-- Basic Elements --*/
+
+    // Define svgs
+    $$.svg = $$.selectChart.append("svg").style("overflow", "hidden").on('mouseenter', function () {
+        return config.onmouseover.call($$);
+    }).on('mouseleave', function () {
+        return config.onmouseout.call($$);
+    });
+
+    if ($$.config.svg_classname) {
+        $$.svg.attr('class', $$.config.svg_classname);
+    }
+
+    // Define defs
+    defs = $$.svg.append("defs");
+    $$.clipChart = $$.appendClip(defs, $$.clipId);
+    $$.clipXAxis = $$.appendClip(defs, $$.clipIdForXAxis);
+    $$.clipYAxis = $$.appendClip(defs, $$.clipIdForYAxis);
+    $$.clipGrid = $$.appendClip(defs, $$.clipIdForGrid);
+    $$.clipSubchart = $$.appendClip(defs, $$.clipIdForSubchart);
+    $$.updateSvgSize();
+
+    // Define regions
+    main = $$.main = $$.svg.append("g").attr("transform", $$.getTranslate('main'));
+
+    if ($$.initSubchart) {
+        $$.initSubchart();
+    }
+    if ($$.initTooltip) {
+        $$.initTooltip();
+    }
+    if ($$.initLegend) {
+        $$.initLegend();
+    }
+    if ($$.initTitle) {
+        $$.initTitle();
+    }
+
+    /*-- Main Region --*/
+
+    // text when empty
+    main.append("text").attr("class", CLASS.text + ' ' + CLASS.empty).attr("text-anchor", "middle" // horizontal centering of text at x position in all browsers.
+    ).attr("dominant-baseline", "middle"); // vertical centering of text at y position in all browsers, except IE.
+
+    // Regions
+    $$.initRegion();
+
+    // Grids
+    $$.initGrid();
+
+    // Define g for chart area
+    main.append('g').attr("clip-path", $$.clipPath).attr('class', CLASS.chart);
+
+    // Grid lines
+    if (config.grid_lines_front) {
+        $$.initGridLines();
+    }
+
+    // Cover whole with rects for events
+    $$.initEventRect();
+
+    // Define g for chart
+    $$.initChartElements();
+
+    // if zoom privileged, insert rect to forefront
+    // TODO: is this needed?
+    main.insert('rect', config.zoom_privileged ? null : 'g.' + CLASS.regions).attr('class', CLASS.zoomRect).attr('width', $$.width).attr('height', $$.height).style('opacity', 0).on("dblclick.zoom", null);
+
+    // Set default extent if defined
+    if (config.axis_x_extent) {
+        $$.brush.extent($$.getDefaultExtent());
+    }
+
+    // Add Axis
+    $$.axis.init();
+
+    // Set targets
+    $$.updateTargets($$.data.targets);
+
+    // Draw with targets
+    if (binding) {
+        $$.updateDimension();
+        $$.config.oninit.call($$);
+        $$.redraw({
+            withTransition: false,
+            withTransform: true,
+            withUpdateXDomain: true,
+            withUpdateOrgXDomain: true,
+            withTransitionForAxis: false
+        });
+    }
+
+    // Bind resize event
+    $$.bindResize();
+
+    // export element of the chart
+    $$.api.element = $$.selectChart.node();
+};
+
+c3_chart_internal_fn.smoothLines = function (el, type) {
+    var $$ = this;
+    if (type === 'grid') {
+        el.each(function () {
+            var g = $$.d3.select(this),
+                x1 = g.attr('x1'),
+                x2 = g.attr('x2'),
+                y1 = g.attr('y1'),
+                y2 = g.attr('y2');
+            g.attr({
+                'x1': Math.ceil(x1),
+                'x2': Math.ceil(x2),
+                'y1': Math.ceil(y1),
+                'y2': Math.ceil(y2)
+            });
+        });
+    }
+};
+
+c3_chart_internal_fn.updateSizes = function () {
+    var $$ = this,
+        config = $$.config;
+    var legendHeight = $$.legend ? $$.getLegendHeight() : 0,
+        legendWidth = $$.legend ? $$.getLegendWidth() : 0,
+        legendHeightForBottom = $$.isLegendRight || $$.isLegendInset ? 0 : legendHeight,
+        hasArc = $$.hasArcType(),
+        xAxisHeight = config.axis_rotated || hasArc ? 0 : $$.getHorizontalAxisHeight('x'),
+        subchartHeight = config.subchart_show && !hasArc ? config.subchart_size_height + xAxisHeight : 0;
+
+    $$.currentWidth = $$.getCurrentWidth();
+    $$.currentHeight = $$.getCurrentHeight();
+
+    // for main
+    $$.margin = config.axis_rotated ? {
+        top: $$.getHorizontalAxisHeight('y2') + $$.getCurrentPaddingTop(),
+        right: hasArc ? 0 : $$.getCurrentPaddingRight(),
+        bottom: $$.getHorizontalAxisHeight('y') + legendHeightForBottom + $$.getCurrentPaddingBottom(),
+        left: subchartHeight + (hasArc ? 0 : $$.getCurrentPaddingLeft())
+    } : {
+        top: 4 + $$.getCurrentPaddingTop(), // for top tick text
+        right: hasArc ? 0 : $$.getCurrentPaddingRight(),
+        bottom: xAxisHeight + subchartHeight + legendHeightForBottom + $$.getCurrentPaddingBottom(),
+        left: hasArc ? 0 : $$.getCurrentPaddingLeft()
+    };
+
+    // for subchart
+    $$.margin2 = config.axis_rotated ? {
+        top: $$.margin.top,
+        right: NaN,
+        bottom: 20 + legendHeightForBottom,
+        left: $$.rotated_padding_left
+    } : {
+        top: $$.currentHeight - subchartHeight - legendHeightForBottom,
+        right: NaN,
+        bottom: xAxisHeight + legendHeightForBottom,
+        left: $$.margin.left
+    };
+
+    // for legend
+    $$.margin3 = {
+        top: 0,
+        right: NaN,
+        bottom: 0,
+        left: 0
+    };
+    if ($$.updateSizeForLegend) {
+        $$.updateSizeForLegend(legendHeight, legendWidth);
+    }
+
+    $$.width = $$.currentWidth - $$.margin.left - $$.margin.right;
+    $$.height = $$.currentHeight - $$.margin.top - $$.margin.bottom;
+    if ($$.width < 0) {
+        $$.width = 0;
+    }
+    if ($$.height < 0) {
+        $$.height = 0;
+    }
+
+    $$.width2 = config.axis_rotated ? $$.margin.left - $$.rotated_padding_left - $$.rotated_padding_right : $$.width;
+    $$.height2 = config.axis_rotated ? $$.height : $$.currentHeight - $$.margin2.top - $$.margin2.bottom;
+    if ($$.width2 < 0) {
+        $$.width2 = 0;
+    }
+    if ($$.height2 < 0) {
+        $$.height2 = 0;
+    }
+
+    // for arc
+    $$.arcWidth = $$.width - ($$.isLegendRight ? legendWidth + 10 : 0);
+    $$.arcHeight = $$.height - ($$.isLegendRight ? 0 : 10);
+    if ($$.hasType('gauge') && !config.gauge_fullCircle) {
+        $$.arcHeight += $$.height - $$.getGaugeLabelHeight();
+    }
+    if ($$.updateRadius) {
+        $$.updateRadius();
+    }
+
+    if ($$.isLegendRight && hasArc) {
+        $$.margin3.left = $$.arcWidth / 2 + $$.radiusExpanded * 1.1;
+    }
+};
+
+c3_chart_internal_fn.updateTargets = function (targets) {
+    var $$ = this;
+
+    /*-- Main --*/
+
+    //-- Text --//
+    $$.updateTargetsForText(targets);
+
+    //-- Bar --//
+    $$.updateTargetsForBar(targets);
+
+    //-- Line --//
+    $$.updateTargetsForLine(targets);
+
+    //-- Arc --//
+    if ($$.hasArcType() && $$.updateTargetsForArc) {
+        $$.updateTargetsForArc(targets);
+    }
+
+    /*-- Sub --*/
+
+    if ($$.updateTargetsForSubchart) {
+        $$.updateTargetsForSubchart(targets);
+    }
+
+    // Fade-in each chart
+    $$.showTargets();
+};
+c3_chart_internal_fn.showTargets = function () {
+    var $$ = this;
+    $$.svg.selectAll('.' + CLASS.target).filter(function (d) {
+        return $$.isTargetToShow(d.id);
+    }).transition().duration($$.config.transition_duration).style("opacity", 1);
+};
+
+c3_chart_internal_fn.redraw = function (options, transitions) {
+    var $$ = this,
+        main = $$.main,
+        d3 = $$.d3,
+        config = $$.config;
+    var areaIndices = $$.getShapeIndices($$.isAreaType),
+        barIndices = $$.getShapeIndices($$.isBarType),
+        lineIndices = $$.getShapeIndices($$.isLineType);
+    var withY, withSubchart, withTransition, withTransitionForExit, withTransitionForAxis, withTransform, withUpdateXDomain, withUpdateOrgXDomain, withTrimXDomain, withLegend, withEventRect, withDimension, withUpdateXAxis;
+    var hideAxis = $$.hasArcType();
+    var drawArea, drawBar, drawLine, xForText, yForText;
+    var duration, durationForExit, durationForAxis;
+    var waitForDraw, flow;
+    var targetsToShow = $$.filterTargetsToShow($$.data.targets),
+        tickValues,
+        i,
+        intervalForCulling,
+        xDomainForZoom;
+    var xv = $$.xv.bind($$),
+        cx,
+        cy;
+
+    options = options || {};
+    withY = getOption(options, "withY", true);
+    withSubchart = getOption(options, "withSubchart", true);
+    withTransition = getOption(options, "withTransition", true);
+    withTransform = getOption(options, "withTransform", false);
+    withUpdateXDomain = getOption(options, "withUpdateXDomain", false);
+    withUpdateOrgXDomain = getOption(options, "withUpdateOrgXDomain", false);
+    withTrimXDomain = getOption(options, "withTrimXDomain", true);
+    withUpdateXAxis = getOption(options, "withUpdateXAxis", withUpdateXDomain);
+    withLegend = getOption(options, "withLegend", false);
+    withEventRect = getOption(options, "withEventRect", true);
+    withDimension = getOption(options, "withDimension", true);
+    withTransitionForExit = getOption(options, "withTransitionForExit", withTransition);
+    withTransitionForAxis = getOption(options, "withTransitionForAxis", withTransition);
+
+    duration = withTransition ? config.transition_duration : 0;
+    durationForExit = withTransitionForExit ? duration : 0;
+    durationForAxis = withTransitionForAxis ? duration : 0;
+
+    transitions = transitions || $$.axis.generateTransitions(durationForAxis);
+
+    // update legend and transform each g
+    if (withLegend && config.legend_show) {
+        $$.updateLegend($$.mapToIds($$.data.targets), options, transitions);
+    } else if (withDimension) {
+        // need to update dimension (e.g. axis.y.tick.values) because y tick values should change
+        // no need to update axis in it because they will be updated in redraw()
+        $$.updateDimension(true);
+    }
+
+    // MEMO: needed for grids calculation
+    if ($$.isCategorized() && targetsToShow.length === 0) {
+        $$.x.domain([0, $$.axes.x.selectAll('.tick').size()]);
+    }
+
+    if (targetsToShow.length) {
+        $$.updateXDomain(targetsToShow, withUpdateXDomain, withUpdateOrgXDomain, withTrimXDomain);
+        if (!config.axis_x_tick_values) {
+            tickValues = $$.axis.updateXAxisTickValues(targetsToShow);
+        }
+    } else {
+        $$.xAxis.tickValues([]);
+        $$.subXAxis.tickValues([]);
+    }
+
+    if (config.zoom_rescale && !options.flow) {
+        xDomainForZoom = $$.x.orgDomain();
+    }
+
+    $$.y.domain($$.getYDomain(targetsToShow, 'y', xDomainForZoom));
+    $$.y2.domain($$.getYDomain(targetsToShow, 'y2', xDomainForZoom));
+
+    if (!config.axis_y_tick_values && config.axis_y_tick_count) {
+        $$.yAxis.tickValues($$.axis.generateTickValues($$.y.domain(), config.axis_y_tick_count));
+    }
+    if (!config.axis_y2_tick_values && config.axis_y2_tick_count) {
+        $$.y2Axis.tickValues($$.axis.generateTickValues($$.y2.domain(), config.axis_y2_tick_count));
+    }
+
+    // axes
+    $$.axis.redraw(transitions, hideAxis);
+
+    // Update axis label
+    $$.axis.updateLabels(withTransition);
+
+    // show/hide if manual culling needed
+    if ((withUpdateXDomain || withUpdateXAxis) && targetsToShow.length) {
+        if (config.axis_x_tick_culling && tickValues) {
+            for (i = 1; i < tickValues.length; i++) {
+                if (tickValues.length / i < config.axis_x_tick_culling_max) {
+                    intervalForCulling = i;
+                    break;
+                }
+            }
+            $$.svg.selectAll('.' + CLASS.axisX + ' .tick text').each(function (e) {
+                var index = tickValues.indexOf(e);
+                if (index >= 0) {
+                    d3.select(this).style('display', index % intervalForCulling ? 'none' : 'block');
+                }
+            });
+        } else {
+            $$.svg.selectAll('.' + CLASS.axisX + ' .tick text').style('display', 'block');
+        }
+    }
+
+    // setup drawer - MEMO: these must be called after axis updated
+    drawArea = $$.generateDrawArea ? $$.generateDrawArea(areaIndices, false) : undefined;
+    drawBar = $$.generateDrawBar ? $$.generateDrawBar(barIndices) : undefined;
+    drawLine = $$.generateDrawLine ? $$.generateDrawLine(lineIndices, false) : undefined;
+    xForText = $$.generateXYForText(areaIndices, barIndices, lineIndices, true);
+    yForText = $$.generateXYForText(areaIndices, barIndices, lineIndices, false);
+
+    // Update sub domain
+    if (withY) {
+        $$.subY.domain($$.getYDomain(targetsToShow, 'y'));
+        $$.subY2.domain($$.getYDomain(targetsToShow, 'y2'));
+    }
+
+    // xgrid focus
+    $$.updateXgridFocus();
+
+    // Data empty label positioning and text.
+    main.select("text." + CLASS.text + '.' + CLASS.empty).attr("x", $$.width / 2).attr("y", $$.height / 2).text(config.data_empty_label_text).transition().style('opacity', targetsToShow.length ? 0 : 1);
+
+    // grid
+    $$.updateGrid(duration);
+
+    // rect for regions
+    $$.updateRegion(duration);
+
+    // bars
+    $$.updateBar(durationForExit);
+
+    // lines, areas and cricles
+    $$.updateLine(durationForExit);
+    $$.updateArea(durationForExit);
+    $$.updateCircle();
+
+    // text
+    if ($$.hasDataLabel()) {
+        $$.updateText(durationForExit);
+    }
+
+    // title
+    if ($$.redrawTitle) {
+        $$.redrawTitle();
+    }
+
+    // arc
+    if ($$.redrawArc) {
+        $$.redrawArc(duration, durationForExit, withTransform);
+    }
+
+    // subchart
+    if ($$.redrawSubchart) {
+        $$.redrawSubchart(withSubchart, transitions, duration, durationForExit, areaIndices, barIndices, lineIndices);
+    }
+
+    // circles for select
+    main.selectAll('.' + CLASS.selectedCircles).filter($$.isBarType.bind($$)).selectAll('circle').remove();
+
+    // event rects will redrawn when flow called
+    if (config.interaction_enabled && !options.flow && withEventRect) {
+        $$.redrawEventRect();
+        if ($$.updateZoom) {
+            $$.updateZoom();
+        }
+    }
+
+    // update circleY based on updated parameters
+    $$.updateCircleY();
+
+    // generate circle x/y functions depending on updated params
+    cx = ($$.config.axis_rotated ? $$.circleY : $$.circleX).bind($$);
+    cy = ($$.config.axis_rotated ? $$.circleX : $$.circleY).bind($$);
+
+    if (options.flow) {
+        flow = $$.generateFlow({
+            targets: targetsToShow,
+            flow: options.flow,
+            duration: options.flow.duration,
+            drawBar: drawBar,
+            drawLine: drawLine,
+            drawArea: drawArea,
+            cx: cx,
+            cy: cy,
+            xv: xv,
+            xForText: xForText,
+            yForText: yForText
+        });
+    }
+
+    if ((duration || flow) && $$.isTabVisible()) {
+        // Only use transition if tab visible. See #938.
+        // transition should be derived from one transition
+        d3.transition().duration(duration).each(function () {
+            var transitionsToWait = [];
+
+            // redraw and gather transitions
+            [$$.redrawBar(drawBar, true), $$.redrawLine(drawLine, true), $$.redrawArea(drawArea, true), $$.redrawCircle(cx, cy, true), $$.redrawText(xForText, yForText, options.flow, true), $$.redrawRegion(true), $$.redrawGrid(true)].forEach(function (transitions) {
+                transitions.forEach(function (transition) {
+                    transitionsToWait.push(transition);
+                });
+            });
+
+            // Wait for end of transitions to call flow and onrendered callback
+            waitForDraw = $$.generateWait();
+            transitionsToWait.forEach(function (t) {
+                waitForDraw.add(t);
+            });
+        }).call(waitForDraw, function () {
+            if (flow) {
+                flow();
+            }
+            if (config.onrendered) {
+                config.onrendered.call($$);
+            }
+        });
+    } else {
+        $$.redrawBar(drawBar);
+        $$.redrawLine(drawLine);
+        $$.redrawArea(drawArea);
+        $$.redrawCircle(cx, cy);
+        $$.redrawText(xForText, yForText, options.flow);
+        $$.redrawRegion();
+        $$.redrawGrid();
+        if (config.onrendered) {
+            config.onrendered.call($$);
+        }
+    }
+
+    // update fadein condition
+    $$.mapToIds($$.data.targets).forEach(function (id) {
+        $$.withoutFadeIn[id] = true;
+    });
+};
+
+c3_chart_internal_fn.updateAndRedraw = function (options) {
+    var $$ = this,
+        config = $$.config,
+        transitions;
+    options = options || {};
+    // same with redraw
+    options.withTransition = getOption(options, "withTransition", true);
+    options.withTransform = getOption(options, "withTransform", false);
+    options.withLegend = getOption(options, "withLegend", false);
+    // NOT same with redraw
+    options.withUpdateXDomain = true;
+    options.withUpdateOrgXDomain = true;
+    options.withTransitionForExit = false;
+    options.withTransitionForTransform = getOption(options, "withTransitionForTransform", options.withTransition);
+    // MEMO: this needs to be called before updateLegend and it means this ALWAYS needs to be called)
+    $$.updateSizes();
+    // MEMO: called in updateLegend in redraw if withLegend
+    if (!(options.withLegend && config.legend_show)) {
+        transitions = $$.axis.generateTransitions(options.withTransitionForAxis ? config.transition_duration : 0);
+        // Update scales
+        $$.updateScales();
+        $$.updateSvgSize();
+        // Update g positions
+        $$.transformAll(options.withTransitionForTransform, transitions);
+    }
+    // Draw with new sizes & scales
+    $$.redraw(options, transitions);
+};
+c3_chart_internal_fn.redrawWithoutRescale = function () {
+    this.redraw({
+        withY: false,
+        withSubchart: false,
+        withEventRect: false,
+        withTransitionForAxis: false
+    });
+};
+
+c3_chart_internal_fn.isTimeSeries = function () {
+    return this.config.axis_x_type === 'timeseries';
+};
+c3_chart_internal_fn.isCategorized = function () {
+    return this.config.axis_x_type.indexOf('categor') >= 0;
+};
+c3_chart_internal_fn.isCustomX = function () {
+    var $$ = this,
+        config = $$.config;
+    return !$$.isTimeSeries() && (config.data_x || notEmpty(config.data_xs));
+};
+
+c3_chart_internal_fn.isTimeSeriesY = function () {
+    return this.config.axis_y_type === 'timeseries';
+};
+
+c3_chart_internal_fn.getTranslate = function (target) {
+    var $$ = this,
+        config = $$.config,
+        x,
+        y;
+    if (target === 'main') {
+        x = asHalfPixel($$.margin.left);
+        y = asHalfPixel($$.margin.top);
+    } else if (target === 'context') {
+        x = asHalfPixel($$.margin2.left);
+        y = asHalfPixel($$.margin2.top);
+    } else if (target === 'legend') {
+        x = $$.margin3.left;
+        y = $$.margin3.top;
+    } else if (target === 'x') {
+        x = 0;
+        y = config.axis_rotated ? 0 : $$.height;
+    } else if (target === 'y') {
+        x = 0;
+        y = config.axis_rotated ? $$.height : 0;
+    } else if (target === 'y2') {
+        x = config.axis_rotated ? 0 : $$.width;
+        y = config.axis_rotated ? 1 : 0;
+    } else if (target === 'subx') {
+        x = 0;
+        y = config.axis_rotated ? 0 : $$.height2;
+    } else if (target === 'arc') {
+        x = $$.arcWidth / 2;
+        y = $$.arcHeight / 2;
+    }
+    return "translate(" + x + "," + y + ")";
+};
+c3_chart_internal_fn.initialOpacity = function (d) {
+    return d.value !== null && this.withoutFadeIn[d.id] ? 1 : 0;
+};
+c3_chart_internal_fn.initialOpacityForCircle = function (d) {
+    return d.value !== null && this.withoutFadeIn[d.id] ? this.opacityForCircle(d) : 0;
+};
+c3_chart_internal_fn.opacityForCircle = function (d) {
+    var isPointShouldBeShown = isFunction(this.config.point_show) ? this.config.point_show(d) : this.config.point_show;
+    var opacity = isPointShouldBeShown ? 1 : 0;
+    return isValue(d.value) ? this.isScatterType(d) ? 0.5 : opacity : 0;
+};
+c3_chart_internal_fn.opacityForText = function () {
+    return this.hasDataLabel() ? 1 : 0;
+};
+c3_chart_internal_fn.xx = function (d) {
+    return d ? this.x(d.x) : null;
+};
+c3_chart_internal_fn.xv = function (d) {
+    var $$ = this,
+        value = d.value;
+    if ($$.isTimeSeries()) {
+        value = $$.parseDate(d.value);
+    } else if ($$.isCategorized() && typeof d.value === 'string') {
+        value = $$.config.axis_x_categories.indexOf(d.value);
+    }
+    return Math.ceil($$.x(value));
+};
+c3_chart_internal_fn.yv = function (d) {
+    var $$ = this,
+        yScale = d.axis && d.axis === 'y2' ? $$.y2 : $$.y;
+    return Math.ceil(yScale(d.value));
+};
+c3_chart_internal_fn.subxx = function (d) {
+    return d ? this.subX(d.x) : null;
+};
+
+c3_chart_internal_fn.transformMain = function (withTransition, transitions) {
+    var $$ = this,
+        xAxis,
+        yAxis,
+        y2Axis;
+    if (transitions && transitions.axisX) {
+        xAxis = transitions.axisX;
+    } else {
+        xAxis = $$.main.select('.' + CLASS.axisX);
+        if (withTransition) {
+            xAxis = xAxis.transition();
+        }
+    }
+    if (transitions && transitions.axisY) {
+        yAxis = transitions.axisY;
+    } else {
+        yAxis = $$.main.select('.' + CLASS.axisY);
+        if (withTransition) {
+            yAxis = yAxis.transition();
+        }
+    }
+    if (transitions && transitions.axisY2) {
+        y2Axis = transitions.axisY2;
+    } else {
+        y2Axis = $$.main.select('.' + CLASS.axisY2);
+        if (withTransition) {
+            y2Axis = y2Axis.transition();
+        }
+    }
+    (withTransition ? $$.main.transition() : $$.main).attr("transform", $$.getTranslate('main'));
+    xAxis.attr("transform", $$.getTranslate('x'));
+    yAxis.attr("transform", $$.getTranslate('y'));
+    y2Axis.attr("transform", $$.getTranslate('y2'));
+    $$.main.select('.' + CLASS.chartArcs).attr("transform", $$.getTranslate('arc'));
+};
+c3_chart_internal_fn.transformAll = function (withTransition, transitions) {
+    var $$ = this;
+    $$.transformMain(withTransition, transitions);
+    if ($$.config.subchart_show) {
+        $$.transformContext(withTransition, transitions);
+    }
+    if ($$.legend) {
+        $$.transformLegend(withTransition);
+    }
+};
+
+c3_chart_internal_fn.updateSvgSize = function () {
+    var $$ = this,
+        brush = $$.svg.select(".c3-brush .background");
+    $$.svg.attr('width', $$.currentWidth).attr('height', $$.currentHeight);
+    $$.svg.selectAll(['#' + $$.clipId, '#' + $$.clipIdForGrid]).select('rect').attr('width', $$.width).attr('height', $$.height);
+    $$.svg.select('#' + $$.clipIdForXAxis).select('rect').attr('x', $$.getXAxisClipX.bind($$)).attr('y', $$.getXAxisClipY.bind($$)).attr('width', $$.getXAxisClipWidth.bind($$)).attr('height', $$.getXAxisClipHeight.bind($$));
+    $$.svg.select('#' + $$.clipIdForYAxis).select('rect').attr('x', $$.getYAxisClipX.bind($$)).attr('y', $$.getYAxisClipY.bind($$)).attr('width', $$.getYAxisClipWidth.bind($$)).attr('height', $$.getYAxisClipHeight.bind($$));
+    $$.svg.select('#' + $$.clipIdForSubchart).select('rect').attr('width', $$.width).attr('height', brush.size() ? brush.attr('height') : 0);
+    $$.svg.select('.' + CLASS.zoomRect).attr('width', $$.width).attr('height', $$.height);
+    // MEMO: parent div's height will be bigger than svg when <!DOCTYPE html>
+    $$.selectChart.style('max-height', $$.currentHeight + "px");
+};
+
+c3_chart_internal_fn.updateDimension = function (withoutAxis) {
+    var $$ = this;
+    if (!withoutAxis) {
+        if ($$.config.axis_rotated) {
+            $$.axes.x.call($$.xAxis);
+            $$.axes.subx.call($$.subXAxis);
+        } else {
+            $$.axes.y.call($$.yAxis);
+            $$.axes.y2.call($$.y2Axis);
+        }
+    }
+    $$.updateSizes();
+    $$.updateScales();
+    $$.updateSvgSize();
+    $$.transformAll(false);
+};
+
+c3_chart_internal_fn.observeInserted = function (selection) {
+    var $$ = this,
+        observer;
+    if (typeof MutationObserver === 'undefined') {
+        window.console.error("MutationObserver not defined.");
+        return;
+    }
+    observer = new MutationObserver(function (mutations) {
+        mutations.forEach(function (mutation) {
+            if (mutation.type === 'childList' && mutation.previousSibling) {
+                observer.disconnect();
+                // need to wait for completion of load because size calculation requires the actual sizes determined after that completion
+                $$.intervalForObserveInserted = window.setInterval(function () {
+                    // parentNode will NOT be null when completed
+                    if (selection.node().parentNode) {
+                        window.clearInterval($$.intervalForObserveInserted);
+                        $$.updateDimension();
+                        if ($$.brush) {
+                            $$.brush.update();
+                        }
+                        $$.config.oninit.call($$);
+                        $$.redraw({
+                            withTransform: true,
+                            withUpdateXDomain: true,
+                            withUpdateOrgXDomain: true,
+                            withTransition: false,
+                            withTransitionForTransform: false,
+                            withLegend: true
+                        });
+                        selection.transition().style('opacity', 1);
+                    }
+                }, 10);
+            }
+        });
+    });
+    observer.observe(selection.node(), { attributes: true, childList: true, characterData: true });
+};
+
+c3_chart_internal_fn.bindResize = function () {
+    var $$ = this,
+        config = $$.config;
+
+    $$.resizeFunction = $$.generateResize();
+
+    $$.resizeFunction.add(function () {
+        config.onresize.call($$);
+    });
+    if (config.resize_auto) {
+        $$.resizeFunction.add(function () {
+            if ($$.resizeTimeout !== undefined) {
+                window.clearTimeout($$.resizeTimeout);
+            }
+            $$.resizeTimeout = window.setTimeout(function () {
+                delete $$.resizeTimeout;
+                $$.api.flush();
+            }, 100);
+        });
+    }
+    $$.resizeFunction.add(function () {
+        config.onresized.call($$);
+    });
+
+    if (window.attachEvent) {
+        window.attachEvent('onresize', $$.resizeFunction);
+    } else if (window.addEventListener) {
+        window.addEventListener('resize', $$.resizeFunction, false);
+    } else {
+        // fallback to this, if this is a very old browser
+        var wrapper = window.onresize;
+        if (!wrapper) {
+            // create a wrapper that will call all charts
+            wrapper = $$.generateResize();
+        } else if (!wrapper.add || !wrapper.remove) {
+            // there is already a handler registered, make sure we call it too
+            wrapper = $$.generateResize();
+            wrapper.add(window.onresize);
+        }
+        // add this graph to the wrapper, we will be removed if the user calls destroy
+        wrapper.add($$.resizeFunction);
+        window.onresize = wrapper;
+    }
+};
+
+c3_chart_internal_fn.generateResize = function () {
+    var resizeFunctions = [];
+    function callResizeFunctions() {
+        resizeFunctions.forEach(function (f) {
+            f();
+        });
+    }
+    callResizeFunctions.add = function (f) {
+        resizeFunctions.push(f);
+    };
+    callResizeFunctions.remove = function (f) {
+        for (var i = 0; i < resizeFunctions.length; i++) {
+            if (resizeFunctions[i] === f) {
+                resizeFunctions.splice(i, 1);
+                break;
+            }
+        }
+    };
+    return callResizeFunctions;
+};
+
+c3_chart_internal_fn.endall = function (transition, callback) {
+    var n = 0;
+    transition.each(function () {
+        ++n;
+    }).each("end", function () {
+        if (! --n) {
+            callback.apply(this, arguments);
+        }
+    });
+};
+c3_chart_internal_fn.generateWait = function () {
+    var transitionsToWait = [],
+        f = function f(transition, callback) {
+        var timer = setInterval(function () {
+            var done = 0;
+            transitionsToWait.forEach(function (t) {
+                if (t.empty()) {
+                    done += 1;
+                    return;
+                }
+                try {
+                    t.transition();
+                } catch (e) {
+                    done += 1;
+                }
+            });
+            if (done === transitionsToWait.length) {
+                clearInterval(timer);
+                if (callback) {
+                    callback();
+                }
+            }
+        }, 10);
+    };
+    f.add = function (transition) {
+        transitionsToWait.push(transition);
+    };
+    return f;
+};
+
+c3_chart_internal_fn.parseDate = function (date) {
+    var $$ = this,
+        parsedDate;
+    if (date instanceof Date) {
+        parsedDate = date;
+    } else if (typeof date === 'string') {
+        parsedDate = $$.dataTimeFormat($$.config.data_xFormat).parse(date);
+    } else if ((typeof date === 'undefined' ? 'undefined' : _typeof(date)) === 'object') {
+        parsedDate = new Date(+date);
+    } else if (typeof date === 'number' && !isNaN(date)) {
+        parsedDate = new Date(+date);
+    }
+    if (!parsedDate || isNaN(+parsedDate)) {
+        window.console.error("Failed to parse x '" + date + "' to Date object");
+    }
+    return parsedDate;
+};
+
+c3_chart_internal_fn.isTabVisible = function () {
+    var hidden;
+    if (typeof document.hidden !== "undefined") {
+        // Opera 12.10 and Firefox 18 and later support
+        hidden = "hidden";
+    } else if (typeof document.mozHidden !== "undefined") {
+        hidden = "mozHidden";
+    } else if (typeof document.msHidden !== "undefined") {
+        hidden = "msHidden";
+    } else if (typeof document.webkitHidden !== "undefined") {
+        hidden = "webkitHidden";
+    }
+
+    return document[hidden] ? false : true;
+};
+
+c3_chart_internal_fn.isValue = isValue;
+c3_chart_internal_fn.isFunction = isFunction;
+c3_chart_internal_fn.isString = isString;
+c3_chart_internal_fn.isUndefined = isUndefined;
+c3_chart_internal_fn.isDefined = isDefined;
+c3_chart_internal_fn.ceil10 = ceil10;
+c3_chart_internal_fn.asHalfPixel = asHalfPixel;
+c3_chart_internal_fn.diffDomain = diffDomain;
+c3_chart_internal_fn.isEmpty = isEmpty;
+c3_chart_internal_fn.notEmpty = notEmpty;
+c3_chart_internal_fn.notEmpty = notEmpty;
+c3_chart_internal_fn.getOption = getOption;
+c3_chart_internal_fn.hasValue = hasValue;
+c3_chart_internal_fn.sanitise = sanitise;
+c3_chart_internal_fn.getPathBox = getPathBox;
+c3_chart_internal_fn.CLASS = CLASS;
+
+/* jshint ignore:start */
+
+// PhantomJS doesn't have support for Function.prototype.bind, which has caused confusion. Use
+// this polyfill to avoid the confusion.
+// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/bind#Polyfill
+
+if (!Function.prototype.bind) {
+    Function.prototype.bind = function (oThis) {
+        if (typeof this !== 'function') {
+            // closest thing possible to the ECMAScript 5
+            // internal IsCallable function
+            throw new TypeError('Function.prototype.bind - what is trying to be bound is not callable');
+        }
+
+        var aArgs = Array.prototype.slice.call(arguments, 1),
+            fToBind = this,
+            fNOP = function fNOP() {},
+            fBound = function fBound() {
+            return fToBind.apply(this instanceof fNOP ? this : oThis, aArgs.concat(Array.prototype.slice.call(arguments)));
+        };
+
+        fNOP.prototype = this.prototype;
+        fBound.prototype = new fNOP();
+
+        return fBound;
+    };
+}
+
+// SVGPathSeg API polyfill
+// https://github.com/progers/pathseg
+//
+// This is a drop-in replacement for the SVGPathSeg and SVGPathSegList APIs that were removed from
+// SVG2 (https://lists.w3.org/Archives/Public/www-svg/2015Jun/0044.html), including the latest spec
+// changes which were implemented in Firefox 43 and Chrome 46.
+
+(function () {
+    "use strict";
+
+    if (!("SVGPathSeg" in window)) {
+        // Spec: http://www.w3.org/TR/SVG11/single-page.html#paths-InterfaceSVGPathSeg
+        window.SVGPathSeg = function (type, typeAsLetter, owningPathSegList) {
+            this.pathSegType = type;
+            this.pathSegTypeAsLetter = typeAsLetter;
+            this._owningPathSegList = owningPathSegList;
+        };
+
+        window.SVGPathSeg.prototype.classname = "SVGPathSeg";
+
+        window.SVGPathSeg.PATHSEG_UNKNOWN = 0;
+        window.SVGPathSeg.PATHSEG_CLOSEPATH = 1;
+        window.SVGPathSeg.PATHSEG_MOVETO_ABS = 2;
+        window.SVGPathSeg.PATHSEG_MOVETO_REL = 3;
+        window.SVGPathSeg.PATHSEG_LINETO_ABS = 4;
+        window.SVGPathSeg.PATHSEG_LINETO_REL = 5;
+        window.SVGPathSeg.PATHSEG_CURVETO_CUBIC_ABS = 6;
+        window.SVGPathSeg.PATHSEG_CURVETO_CUBIC_REL = 7;
+        window.SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_ABS = 8;
+        window.SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_REL = 9;
+        window.SVGPathSeg.PATHSEG_ARC_ABS = 10;
+        window.SVGPathSeg.PATHSEG_ARC_REL = 11;
+        window.SVGPathSeg.PATHSEG_LINETO_HORIZONTAL_ABS = 12;
+        window.SVGPathSeg.PATHSEG_LINETO_HORIZONTAL_REL = 13;
+        window.SVGPathSeg.PATHSEG_LINETO_VERTICAL_ABS = 14;
+        window.SVGPathSeg.PATHSEG_LINETO_VERTICAL_REL = 15;
+        window.SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_ABS = 16;
+        window.SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_REL = 17;
+        window.SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_SMOOTH_ABS = 18;
+        window.SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_SMOOTH_REL = 19;
+
+        // Notify owning PathSegList on any changes so they can be synchronized back to the path element.
+        window.SVGPathSeg.prototype._segmentChanged = function () {
+            if (this._owningPathSegList) this._owningPathSegList.segmentChanged(this);
+        };
+
+        window.SVGPathSegClosePath = function (owningPathSegList) {
+            window.SVGPathSeg.call(this, window.SVGPathSeg.PATHSEG_CLOSEPATH, "z", owningPathSegList);
+        };
+        window.SVGPathSegClosePath.prototype = Object.create(window.SVGPathSeg.prototype);
+        window.SVGPathSegClosePath.prototype.toString = function () {
+            return "[object SVGPathSegClosePath]";
+        };
+        window.SVGPathSegClosePath.prototype._asPathString = function () {
+            return this.pathSegTypeAsLetter;
+        };
+        window.SVGPathSegClosePath.prototype.clone = function () {
+            return new window.SVGPathSegClosePath(undefined);
+        };
+
+        window.SVGPathSegMovetoAbs = function (owningPathSegList, x, y) {
+            window.SVGPathSeg.call(this, window.SVGPathSeg.PATHSEG_MOVETO_ABS, "M", owningPathSegList);
+            this._x = x;
+            this._y = y;
+        };
+        window.SVGPathSegMovetoAbs.prototype = Object.create(window.SVGPathSeg.prototype);
+        window.SVGPathSegMovetoAbs.prototype.toString = function () {
+            return "[object SVGPathSegMovetoAbs]";
+        };
+        window.SVGPathSegMovetoAbs.prototype._asPathString = function () {
+            return this.pathSegTypeAsLetter + " " + this._x + " " + this._y;
+        };
+        window.SVGPathSegMovetoAbs.prototype.clone = function () {
+            return new window.SVGPathSegMovetoAbs(undefined, this._x, this._y);
+        };
+        Object.defineProperty(window.SVGPathSegMovetoAbs.prototype, "x", { get: function get() {
+                return this._x;
+            }, set: function set(x) {
+                this._x = x;this._segmentChanged();
+            }, enumerable: true });
+        Object.defineProperty(window.SVGPathSegMovetoAbs.prototype, "y", { get: function get() {
+                return this._y;
+            }, set: function set(y) {
+                this._y = y;this._segmentChanged();
+            }, enumerable: true });
+
+        window.SVGPathSegMovetoRel = function (owningPathSegList, x, y) {
+            window.SVGPathSeg.call(this, window.SVGPathSeg.PATHSEG_MOVETO_REL, "m", owningPathSegList);
+            this._x = x;
+            this._y = y;
+        };
+        window.SVGPathSegMovetoRel.prototype = Object.create(window.SVGPathSeg.prototype);
+        window.SVGPathSegMovetoRel.prototype.toString = function () {
+            return "[object SVGPathSegMovetoRel]";
+        };
+        window.SVGPathSegMovetoRel.prototype._asPathString = function () {
+            return this.pathSegTypeAsLetter + " " + this._x + " " + this._y;
+        };
+        window.SVGPathSegMovetoRel.prototype.clone = function () {
+            return new window.SVGPathSegMovetoRel(undefined, this._x, this._y);
+        };
+        Object.defineProperty(window.SVGPathSegMovetoRel.prototype, "x", { get: function get() {
+                return this._x;
+            }, set: function set(x) {
+                this._x = x;this._segmentChanged();
+            }, enumerable: true });
+        Object.defineProperty(window.SVGPathSegMovetoRel.prototype, "y", { get: function get() {
+                return this._y;
+            }, set: function set(y) {
+                this._y = y;this._segmentChanged();
+            }, enumerable: true });
+
+        window.SVGPathSegLinetoAbs = function (owningPathSegList, x, y) {
+            window.SVGPathSeg.call(this, window.SVGPathSeg.PATHSEG_LINETO_ABS, "L", owningPathSegList);
+            this._x = x;
+            this._y = y;
+        };
+        window.SVGPathSegLinetoAbs.prototype = Object.create(window.SVGPathSeg.prototype);
+        window.SVGPathSegLinetoAbs.prototype.toString = function () {
+            return "[object SVGPathSegLinetoAbs]";
+        };
+        window.SVGPathSegLinetoAbs.prototype._asPathString = function () {
+            return this.pathSegTypeAsLetter + " " + this._x + " " + this._y;
+        };
+        window.SVGPathSegLinetoAbs.prototype.clone = function () {
+            return new window.SVGPathSegLinetoAbs(undefined, this._x, this._y);
+        };
+        Object.defineProperty(window.SVGPathSegLinetoAbs.prototype, "x", { get: function get() {
+                return this._x;
+            }, set: function set(x) {
+                this._x = x;this._segmentChanged();
+            }, enumerable: true });
+        Object.defineProperty(window.SVGPathSegLinetoAbs.prototype, "y", { get: function get() {
+                return this._y;
+            }, set: function set(y) {
+                this._y = y;this._segmentChanged();
+            }, enumerable: true });
+
+        window.SVGPathSegLinetoRel = function (owningPathSegList, x, y) {
+            window.SVGPathSeg.call(this, window.SVGPathSeg.PATHSEG_LINETO_REL, "l", owningPathSegList);
+            this._x = x;
+            this._y = y;
+        };
+        window.SVGPathSegLinetoRel.prototype = Object.create(window.SVGPathSeg.prototype);
+        window.SVGPathSegLinetoRel.prototype.toString = function () {
+            return "[object SVGPathSegLinetoRel]";
+        };
+        window.SVGPathSegLinetoRel.prototype._asPathString = function () {
+            return this.pathSegTypeAsLetter + " " + this._x + " " + this._y;
+        };
+        window.SVGPathSegLinetoRel.prototype.clone = function () {
+            return new window.SVGPathSegLinetoRel(undefined, this._x, this._y);
+        };
+        Object.defineProperty(window.SVGPathSegLinetoRel.prototype, "x", { get: function get() {
+                return this._x;
+            }, set: function set(x) {
+                this._x = x;this._segmentChanged();
+            }, enumerable: true });
+        Object.defineProperty(window.SVGPathSegLinetoRel.prototype, "y", { get: function get() {
+                return this._y;
+            }, set: function set(y) {
+                this._y = y;this._segmentChanged();
+            }, enumerable: true });
+
+        window.SVGPathSegCurvetoCubicAbs = function (owningPathSegList, x, y, x1, y1, x2, y2) {
+            window.SVGPathSeg.call(this, window.SVGPathSeg.PATHSEG_CURVETO_CUBIC_ABS, "C", owningPathSegList);
+            this._x = x;
+            this._y = y;
+            this._x1 = x1;
+            this._y1 = y1;
+            this._x2 = x2;
+            this._y2 = y2;
+        };
+        window.SVGPathSegCurvetoCubicAbs.prototype = Object.create(window.SVGPathSeg.prototype);
+        window.SVGPathSegCurvetoCubicAbs.prototype.toString = function () {
+            return "[object SVGPathSegCurvetoCubicAbs]";
+        };
+        window.SVGPathSegCurvetoCubicAbs.prototype._asPathString = function () {
+            return this.pathSegTypeAsLetter + " " + this._x1 + " " + this._y1 + " " + this._x2 + " " + this._y2 + " " + this._x + " " + this._y;
+        };
+        window.SVGPathSegCurvetoCubicAbs.prototype.clone = function () {
+            return new window.SVGPathSegCurvetoCubicAbs(undefined, this._x, this._y, this._x1, this._y1, this._x2, this._y2);
+        };
+        Object.defineProperty(window.SVGPathSegCurvetoCubicAbs.prototype, "x", { get: function get() {
+                return this._x;
+            }, set: function set(x) {
+                this._x = x;this._segmentChanged();
+            }, enumerable: true });
+        Object.defineProperty(window.SVGPathSegCurvetoCubicAbs.prototype, "y", { get: function get() {
+                return this._y;
+            }, set: function set(y) {
+                this._y = y;this._segmentChanged();
+            }, enumerable: true });
+        Object.defineProperty(window.SVGPathSegCurvetoCubicAbs.prototype, "x1", { get: function get() {
+                return this._x1;
+            }, set: function set(x1) {
+                this._x1 = x1;this._segmentChanged();
+            }, enumerable: true });
+        Object.defineProperty(window.SVGPathSegCurvetoCubicAbs.prototype, "y1", { get: function get() {
+                return this._y1;
+            }, set: function set(y1) {
+                this._y1 = y1;this._segmentChanged();
+            }, enumerable: true });
+        Object.defineProperty(window.SVGPathSegCurvetoCubicAbs.prototype, "x2", { get: function get() {
+                return this._x2;
+            }, set: function set(x2) {
+                this._x2 = x2;this._segmentChanged();
+            }, enumerable: true });
+        Object.defineProperty(window.SVGPathSegCurvetoCubicAbs.prototype, "y2", { get: function get() {
+                return this._y2;
+            }, set: function set(y2) {
+                this._y2 = y2;this._segmentChanged();
+            }, enumerable: true });
+
+        window.SVGPathSegCurvetoCubicRel = function (owningPathSegList, x, y, x1, y1, x2, y2) {
+            window.SVGPathSeg.call(this, window.SVGPathSeg.PATHSEG_CURVETO_CUBIC_REL, "c", owningPathSegList);
+            this._x = x;
+            this._y = y;
+            this._x1 = x1;
+            this._y1 = y1;
+            this._x2 = x2;
+            this._y2 = y2;
+        };
+        window.SVGPathSegCurvetoCubicRel.prototype = Object.create(window.SVGPathSeg.prototype);
+        window.SVGPathSegCurvetoCubicRel.prototype.toString = function () {
+            return "[object SVGPathSegCurvetoCubicRel]";
+        };
+        window.SVGPathSegCurvetoCubicRel.prototype._asPathString = function () {
+            return this.pathSegTypeAsLetter + " " + this._x1 + " " + this._y1 + " " + this._x2 + " " + this._y2 + " " + this._x + " " + this._y;
+        };
+        window.SVGPathSegCurvetoCubicRel.prototype.clone = function () {
+            return new window.SVGPathSegCurvetoCubicRel(undefined, this._x, this._y, this._x1, this._y1, this._x2, this._y2);
+        };
+        Object.defineProperty(window.SVGPathSegCurvetoCubicRel.prototype, "x", { get: function get() {
+                return this._x;
+            }, set: function set(x) {
+                this._x = x;this._segmentChanged();
+            }, enumerable: true });
+        Object.defineProperty(window.SVGPathSegCurvetoCubicRel.prototype, "y", { get: function get() {
+                return this._y;
+            }, set: function set(y) {
+                this._y = y;this._segmentChanged();
+            }, enumerable: true });
+        Object.defineProperty(window.SVGPathSegCurvetoCubicRel.prototype, "x1", { get: function get() {
+                return this._x1;
+            }, set: function set(x1) {
+                this._x1 = x1;this._segmentChanged();
+            }, enumerable: true });
+        Object.defineProperty(window.SVGPathSegCurvetoCubicRel.prototype, "y1", { get: function get() {
+                return this._y1;
+            }, set: function set(y1) {
+                this._y1 = y1;this._segmentChanged();
+            }, enumerable: true });
+        Object.defineProperty(window.SVGPathSegCurvetoCubicRel.prototype, "x2", { get: function get() {
+                return this._x2;
+            }, set: function set(x2) {
+                this._x2 = x2;this._segmentChanged();
+            }, enumerable: true });
+        Object.defineProperty(window.SVGPathSegCurvetoCubicRel.prototype, "y2", { get: function get() {
+                return this._y2;
+            }, set: function set(y2) {
+                this._y2 = y2;this._segmentChanged();
+            }, enumerable: true });
+
+        window.SVGPathSegCurvetoQuadraticAbs = function (owningPathSegList, x, y, x1, y1) {
+            window.SVGPathSeg.call(this, window.SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_ABS, "Q", owningPathSegList);
+            this._x = x;
+            this._y = y;
+            this._x1 = x1;
+            this._y1 = y1;
+        };
+        window.SVGPathSegCurvetoQuadraticAbs.prototype = Object.create(window.SVGPathSeg.prototype);
+        window.SVGPathSegCurvetoQuadraticAbs.prototype.toString = function () {
+            return "[object SVGPathSegCurvetoQuadraticAbs]";
+        };
+        window.SVGPathSegCurvetoQuadraticAbs.prototype._asPathString = function () {
+            return this.pathSegTypeAsLetter + " " + this._x1 + " " + this._y1 + " " + this._x + " " + this._y;
+        };
+        window.SVGPathSegCurvetoQuadraticAbs.prototype.clone = function () {
+            return new window.SVGPathSegCurvetoQuadraticAbs(undefined, this._x, this._y, this._x1, this._y1);
+        };
+        Object.defineProperty(window.SVGPathSegCurvetoQuadraticAbs.prototype, "x", { get: function get() {
+                return this._x;
+            }, set: function set(x) {
+                this._x = x;this._segmentChanged();
+            }, enumerable: true });
+        Object.defineProperty(window.SVGPathSegCurvetoQuadraticAbs.prototype, "y", { get: function get() {
+                return this._y;
+            }, set: function set(y) {
+                this._y = y;this._segmentChanged();
+            }, enumerable: true });
+        Object.defineProperty(window.SVGPathSegCurvetoQuadraticAbs.prototype, "x1", { get: function get() {
+                return this._x1;
+            }, set: function set(x1) {
+                this._x1 = x1;this._segmentChanged();
+            }, enumerable: true });
+        Object.defineProperty(window.SVGPathSegCurvetoQuadraticAbs.prototype, "y1", { get: function get() {
+                return this._y1;
+            }, set: function set(y1) {
+                this._y1 = y1;this._segmentChanged();
+            }, enumerable: true });
+
+        window.SVGPathSegCurvetoQuadraticRel = function (owningPathSegList, x, y, x1, y1) {
+            window.SVGPathSeg.call(this, window.SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_REL, "q", owningPathSegList);
+            this._x = x;
+            this._y = y;
+            this._x1 = x1;
+            this._y1 = y1;
+        };
+        window.SVGPathSegCurvetoQuadraticRel.prototype = Object.create(window.SVGPathSeg.prototype);
+        window.SVGPathSegCurvetoQuadraticRel.prototype.toString = function () {
+            return "[object SVGPathSegCurvetoQuadraticRel]";
+        };
+        window.SVGPathSegCurvetoQuadraticRel.prototype._asPathString = function () {
+            return this.pathSegTypeAsLetter + " " + this._x1 + " " + this._y1 + " " + this._x + " " + this._y;
+        };
+        window.SVGPathSegCurvetoQuadraticRel.prototype.clone = function () {
+            return new window.SVGPathSegCurvetoQuadraticRel(undefined, this._x, this._y, this._x1, this._y1);
+        };
+        Object.defineProperty(window.SVGPathSegCurvetoQuadraticRel.prototype, "x", { get: function get() {
+                return this._x;
+            }, set: function set(x) {
+                this._x = x;this._segmentChanged();
+            }, enumerable: true });
+        Object.defineProperty(window.SVGPathSegCurvetoQuadraticRel.prototype, "y", { get: function get() {
+                return this._y;
+            }, set: function set(y) {
+                this._y = y;this._segmentChanged();
+            }, enumerable: true });
+        Object.defineProperty(window.SVGPathSegCurvetoQuadraticRel.prototype, "x1", { get: function get() {
+                return this._x1;
+            }, set: function set(x1) {
+                this._x1 = x1;this._segmentChanged();
+            }, enumerable: true });
+        Object.defineProperty(window.SVGPathSegCurvetoQuadraticRel.prototype, "y1", { get: function get() {
+                return this._y1;
+            }, set: function set(y1) {
+                this._y1 = y1;this._segmentChanged();
+            }, enumerable: true });
+
+        window.SVGPathSegArcAbs = function (owningPathSegList, x, y, r1, r2, angle, largeArcFlag, sweepFlag) {
+            window.SVGPathSeg.call(this, window.SVGPathSeg.PATHSEG_ARC_ABS, "A", owningPathSegList);
+            this._x = x;
+            this._y = y;
+            this._r1 = r1;
+            this._r2 = r2;
+            this._angle = angle;
+            this._largeArcFlag = largeArcFlag;
+            this._sweepFlag = sweepFlag;
+        };
+        window.SVGPathSegArcAbs.prototype = Object.create(window.SVGPathSeg.prototype);
+        window.SVGPathSegArcAbs.prototype.toString = function () {
+            return "[object SVGPathSegArcAbs]";
+        };
+        window.SVGPathSegArcAbs.prototype._asPathString = function () {
+            return this.pathSegTypeAsLetter + " " + this._r1 + " " + this._r2 + " " + this._angle + " " + (this._largeArcFlag ? "1" : "0") + " " + (this._sweepFlag ? "1" : "0") + " " + this._x + " " + this._y;
+        };
+        window.SVGPathSegArcAbs.prototype.clone = function () {
+            return new window.SVGPathSegArcAbs(undefined, this._x, this._y, this._r1, this._r2, this._angle, this._largeArcFlag, this._sweepFlag);
+        };
+        Object.defineProperty(window.SVGPathSegArcAbs.prototype, "x", { get: function get() {
+                return this._x;
+            }, set: function set(x) {
+                this._x = x;this._segmentChanged();
+            }, enumerable: true });
+        Object.defineProperty(window.SVGPathSegArcAbs.prototype, "y", { get: function get() {
+                return this._y;
+            }, set: function set(y) {
+                this._y = y;this._segmentChanged();
+            }, enumerable: true });
+        Object.defineProperty(window.SVGPathSegArcAbs.prototype, "r1", { get: function get() {
+                return this._r1;
+            }, set: function set(r1) {
+                this._r1 = r1;this._segmentChanged();
+            }, enumerable: true });
+        Object.defineProperty(window.SVGPathSegArcAbs.prototype, "r2", { get: function get() {
+                return this._r2;
+            }, set: function set(r2) {
+                this._r2 = r2;this._segmentChanged();
+            }, enumerable: true });
+        Object.defineProperty(window.SVGPathSegArcAbs.prototype, "angle", { get: function get() {
+                return this._angle;
+            }, set: function set(angle) {
+                this._angle = angle;this._segmentChanged();
+            }, enumerable: true });
+        Object.defineProperty(window.SVGPathSegArcAbs.prototype, "largeArcFlag", { get: function get() {
+                return this._largeArcFlag;
+            }, set: function set(largeArcFlag) {
+                this._largeArcFlag = largeArcFlag;this._segmentChanged();
+            }, enumerable: true });
+        Object.defineProperty(window.SVGPathSegArcAbs.prototype, "sweepFlag", { get: function get() {
+                return this._sweepFlag;
+            }, set: function set(sweepFlag) {
+                this._sweepFlag = sweepFlag;this._segmentChanged();
+            }, enumerable: true });
+
+        window.SVGPathSegArcRel = function (owningPathSegList, x, y, r1, r2, angle, largeArcFlag, sweepFlag) {
+            window.SVGPathSeg.call(this, window.SVGPathSeg.PATHSEG_ARC_REL, "a", owningPathSegList);
+            this._x = x;
+            this._y = y;
+            this._r1 = r1;
+            this._r2 = r2;
+            this._angle = angle;
+            this._largeArcFlag = largeArcFlag;
+            this._sweepFlag = sweepFlag;
+        };
+        window.SVGPathSegArcRel.prototype = Object.create(window.SVGPathSeg.prototype);
+        window.SVGPathSegArcRel.prototype.toString = function () {
+            return "[object SVGPathSegArcRel]";
+        };
+        window.SVGPathSegArcRel.prototype._asPathString = function () {
+            return this.pathSegTypeAsLetter + " " + this._r1 + " " + this._r2 + " " + this._angle + " " + (this._largeArcFlag ? "1" : "0") + " " + (this._sweepFlag ? "1" : "0") + " " + this._x + " " + this._y;
+        };
+        window.SVGPathSegArcRel.prototype.clone = function () {
+            return new window.SVGPathSegArcRel(undefined, this._x, this._y, this._r1, this._r2, this._angle, this._largeArcFlag, this._sweepFlag);
+        };
+        Object.defineProperty(window.SVGPathSegArcRel.prototype, "x", { get: function get() {
+                return this._x;
+            }, set: function set(x) {
+                this._x = x;this._segmentChanged();
+            }, enumerable: true });
+        Object.defineProperty(window.SVGPathSegArcRel.prototype, "y", { get: function get() {
+                return this._y;
+            }, set: function set(y) {
+                this._y = y;this._segmentChanged();
+            }, enumerable: true });
+        Object.defineProperty(window.SVGPathSegArcRel.prototype, "r1", { get: function get() {
+                return this._r1;
+            }, set: function set(r1) {
+                this._r1 = r1;this._segmentChanged();
+            }, enumerable: true });
+        Object.defineProperty(window.SVGPathSegArcRel.prototype, "r2", { get: function get() {
+                return this._r2;
+            }, set: function set(r2) {
+                this._r2 = r2;this._segmentChanged();
+            }, enumerable: true });
+        Object.defineProperty(window.SVGPathSegArcRel.prototype, "angle", { get: function get() {
+                return this._angle;
+            }, set: function set(angle) {
+                this._angle = angle;this._segmentChanged();
+            }, enumerable: true });
+        Object.defineProperty(window.SVGPathSegArcRel.prototype, "largeArcFlag", { get: function get() {
+                return this._largeArcFlag;
+            }, set: function set(largeArcFlag) {
+                this._largeArcFlag = largeArcFlag;this._segmentChanged();
+            }, enumerable: true });
+        Object.defineProperty(window.SVGPathSegArcRel.prototype, "sweepFlag", { get: function get() {
+                return this._sweepFlag;
+            }, set: function set(sweepFlag) {
+                this._sweepFlag = sweepFlag;this._segmentChanged();
+            }, enumerable: true });
+
+        window.SVGPathSegLinetoHorizontalAbs = function (owningPathSegList, x) {
+            window.SVGPathSeg.call(this, window.SVGPathSeg.PATHSEG_LINETO_HORIZONTAL_ABS, "H", owningPathSegList);
+            this._x = x;
+        };
+        window.SVGPathSegLinetoHorizontalAbs.prototype = Object.create(window.SVGPathSeg.prototype);
+        window.SVGPathSegLinetoHorizontalAbs.prototype.toString = function () {
+            return "[object SVGPathSegLinetoHorizontalAbs]";
+        };
+        window.SVGPathSegLinetoHorizontalAbs.prototype._asPathString = function () {
+            return this.pathSegTypeAsLetter + " " + this._x;
+        };
+        window.SVGPathSegLinetoHorizontalAbs.prototype.clone = function () {
+            return new window.SVGPathSegLinetoHorizontalAbs(undefined, this._x);
+        };
+        Object.defineProperty(window.SVGPathSegLinetoHorizontalAbs.prototype, "x", { get: function get() {
+                return this._x;
+            }, set: function set(x) {
+                this._x = x;this._segmentChanged();
+            }, enumerable: true });
+
+        window.SVGPathSegLinetoHorizontalRel = function (owningPathSegList, x) {
+            window.SVGPathSeg.call(this, window.SVGPathSeg.PATHSEG_LINETO_HORIZONTAL_REL, "h", owningPathSegList);
+            this._x = x;
+        };
+        window.SVGPathSegLinetoHorizontalRel.prototype = Object.create(window.SVGPathSeg.prototype);
+        window.SVGPathSegLinetoHorizontalRel.prototype.toString = function () {
+            return "[object SVGPathSegLinetoHorizontalRel]";
+        };
+        window.SVGPathSegLinetoHorizontalRel.prototype._asPathString = function () {
+            return this.pathSegTypeAsLetter + " " + this._x;
+        };
+        window.SVGPathSegLinetoHorizontalRel.prototype.clone = function () {
+            return new window.SVGPathSegLinetoHorizontalRel(undefined, this._x);
+        };
+        Object.defineProperty(window.SVGPathSegLinetoHorizontalRel.prototype, "x", { get: function get() {
+                return this._x;
+            }, set: function set(x) {
+                this._x = x;this._segmentChanged();
+            }, enumerable: true });
+
+        window.SVGPathSegLinetoVerticalAbs = function (owningPathSegList, y) {
+            window.SVGPathSeg.call(this, window.SVGPathSeg.PATHSEG_LINETO_VERTICAL_ABS, "V", owningPathSegList);
+            this._y = y;
+        };
+        window.SVGPathSegLinetoVerticalAbs.prototype = Object.create(window.SVGPathSeg.prototype);
+        window.SVGPathSegLinetoVerticalAbs.prototype.toString = function () {
+            return "[object SVGPathSegLinetoVerticalAbs]";
+        };
+        window.SVGPathSegLinetoVerticalAbs.prototype._asPathString = function () {
+            return this.pathSegTypeAsLetter + " " + this._y;
+        };
+        window.SVGPathSegLinetoVerticalAbs.prototype.clone = function () {
+            return new window.SVGPathSegLinetoVerticalAbs(undefined, this._y);
+        };
+        Object.defineProperty(window.SVGPathSegLinetoVerticalAbs.prototype, "y", { get: function get() {
+                return this._y;
+            }, set: function set(y) {
+                this._y = y;this._segmentChanged();
+            }, enumerable: true });
+
+        window.SVGPathSegLinetoVerticalRel = function (owningPathSegList, y) {
+            window.SVGPathSeg.call(this, window.SVGPathSeg.PATHSEG_LINETO_VERTICAL_REL, "v", owningPathSegList);
+            this._y = y;
+        };
+        window.SVGPathSegLinetoVerticalRel.prototype = Object.create(window.SVGPathSeg.prototype);
+        window.SVGPathSegLinetoVerticalRel.prototype.toString = function () {
+            return "[object SVGPathSegLinetoVerticalRel]";
+        };
+        window.SVGPathSegLinetoVerticalRel.prototype._asPathString = function () {
+            return this.pathSegTypeAsLetter + " " + this._y;
+        };
+        window.SVGPathSegLinetoVerticalRel.prototype.clone = function () {
+            return new window.SVGPathSegLinetoVerticalRel(undefined, this._y);
+        };
+        Object.defineProperty(window.SVGPathSegLinetoVerticalRel.prototype, "y", { get: function get() {
+                return this._y;
+            }, set: function set(y) {
+                this._y = y;this._segmentChanged();
+            }, enumerable: true });
+
+        window.SVGPathSegCurvetoCubicSmoothAbs = function (owningPathSegList, x, y, x2, y2) {
+            window.SVGPathSeg.call(this, window.SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_ABS, "S", owningPathSegList);
+            this._x = x;
+            this._y = y;
+            this._x2 = x2;
+            this._y2 = y2;
+        };
+        window.SVGPathSegCurvetoCubicSmoothAbs.prototype = Object.create(window.SVGPathSeg.prototype);
+        window.SVGPathSegCurvetoCubicSmoothAbs.prototype.toString = function () {
+            return "[object SVGPathSegCurvetoCubicSmoothAbs]";
+        };
+        window.SVGPathSegCurvetoCubicSmoothAbs.prototype._asPathString = function () {
+            return this.pathSegTypeAsLetter + " " + this._x2 + " " + this._y2 + " " + this._x + " " + this._y;
+        };
+        window.SVGPathSegCurvetoCubicSmoothAbs.prototype.clone = function () {
+            return new window.SVGPathSegCurvetoCubicSmoothAbs(undefined, this._x, this._y, this._x2, this._y2);
+        };
+        Object.defineProperty(window.SVGPathSegCurvetoCubicSmoothAbs.prototype, "x", { get: function get() {
+                return this._x;
+            }, set: function set(x) {
+                this._x = x;this._segmentChanged();
+            }, enumerable: true });
+        Object.defineProperty(window.SVGPathSegCurvetoCubicSmoothAbs.prototype, "y", { get: function get() {
+                return this._y;
+            }, set: function set(y) {
+                this._y = y;this._segmentChanged();
+            }, enumerable: true });
+        Object.defineProperty(window.SVGPathSegCurvetoCubicSmoothAbs.prototype, "x2", { get: function get() {
+                return this._x2;
+            }, set: function set(x2) {
+                this._x2 = x2;this._segmentChanged();
+            }, enumerable: true });
+        Object.defineProperty(window.SVGPathSegCurvetoCubicSmoothAbs.prototype, "y2", { get: function get() {
+                return this._y2;
+            }, set: function set(y2) {
+                this._y2 = y2;this._segmentChanged();
+            }, enumerable: true });
+
+        window.SVGPathSegCurvetoCubicSmoothRel = function (owningPathSegList, x, y, x2, y2) {
+            window.SVGPathSeg.call(this, window.SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_REL, "s", owningPathSegList);
+            this._x = x;
+            this._y = y;
+            this._x2 = x2;
+            this._y2 = y2;
+        };
+        window.SVGPathSegCurvetoCubicSmoothRel.prototype = Object.create(window.SVGPathSeg.prototype);
+        window.SVGPathSegCurvetoCubicSmoothRel.prototype.toString = function () {
+            return "[object SVGPathSegCurvetoCubicSmoothRel]";
+        };
+        window.SVGPathSegCurvetoCubicSmoothRel.prototype._asPathString = function () {
+            return this.pathSegTypeAsLetter + " " + this._x2 + " " + this._y2 + " " + this._x + " " + this._y;
+        };
+        window.SVGPathSegCurvetoCubicSmoothRel.prototype.clone = function () {
+            return new window.SVGPathSegCurvetoCubicSmoothRel(undefined, this._x, this._y, this._x2, this._y2);
+        };
+        Object.defineProperty(window.SVGPathSegCurvetoCubicSmoothRel.prototype, "x", { get: function get() {
+                return this._x;
+            }, set: function set(x) {
+                this._x = x;this._segmentChanged();
+            }, enumerable: true });
+        Object.defineProperty(window.SVGPathSegCurvetoCubicSmoothRel.prototype, "y", { get: function get() {
+                return this._y;
+            }, set: function set(y) {
+                this._y = y;this._segmentChanged();
+            }, enumerable: true });
+        Object.defineProperty(window.SVGPathSegCurvetoCubicSmoothRel.prototype, "x2", { get: function get() {
+                return this._x2;
+            }, set: function set(x2) {
+                this._x2 = x2;this._segmentChanged();
+            }, enumerable: true });
+        Object.defineProperty(window.SVGPathSegCurvetoCubicSmoothRel.prototype, "y2", { get: function get() {
+                return this._y2;
+            }, set: function set(y2) {
+                this._y2 = y2;this._segmentChanged();
+            }, enumerable: true });
+
+        window.SVGPathSegCurvetoQuadraticSmoothAbs = function (owningPathSegList, x, y) {
+            window.SVGPathSeg.call(this, window.SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_SMOOTH_ABS, "T", owningPathSegList);
+            this._x = x;
+            this._y = y;
+        };
+        window.SVGPathSegCurvetoQuadraticSmoothAbs.prototype = Object.create(window.SVGPathSeg.prototype);
+        window.SVGPathSegCurvetoQuadraticSmoothAbs.prototype.toString = function () {
+            return "[object SVGPathSegCurvetoQuadraticSmoothAbs]";
+        };
+        window.SVGPathSegCurvetoQuadraticSmoothAbs.prototype._asPathString = function () {
+            return this.pathSegTypeAsLetter + " " + this._x + " " + this._y;
+        };
+        window.SVGPathSegCurvetoQuadraticSmoothAbs.prototype.clone = function () {
+            return new window.SVGPathSegCurvetoQuadraticSmoothAbs(undefined, this._x, this._y);
+        };
+        Object.defineProperty(window.SVGPathSegCurvetoQuadraticSmoothAbs.prototype, "x", { get: function get() {
+                return this._x;
+            }, set: function set(x) {
+                this._x = x;this._segmentChanged();
+            }, enumerable: true });
+        Object.defineProperty(window.SVGPathSegCurvetoQuadraticSmoothAbs.prototype, "y", { get: function get() {
+                return this._y;
+            }, set: function set(y) {
+                this._y = y;this._segmentChanged();
+            }, enumerable: true });
+
+        window.SVGPathSegCurvetoQuadraticSmoothRel = function (owningPathSegList, x, y) {
+            window.SVGPathSeg.call(this, window.SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_SMOOTH_REL, "t", owningPathSegList);
+            this._x = x;
+            this._y = y;
+        };
+        window.SVGPathSegCurvetoQuadraticSmoothRel.prototype = Object.create(window.SVGPathSeg.prototype);
+        window.SVGPathSegCurvetoQuadraticSmoothRel.prototype.toString = function () {
+            return "[object SVGPathSegCurvetoQuadraticSmoothRel]";
+        };
+        window.SVGPathSegCurvetoQuadraticSmoothRel.prototype._asPathString = function () {
+            return this.pathSegTypeAsLetter + " " + this._x + " " + this._y;
+        };
+        window.SVGPathSegCurvetoQuadraticSmoothRel.prototype.clone = function () {
+            return new window.SVGPathSegCurvetoQuadraticSmoothRel(undefined, this._x, this._y);
+        };
+        Object.defineProperty(window.SVGPathSegCurvetoQuadraticSmoothRel.prototype, "x", { get: function get() {
+                return this._x;
+            }, set: function set(x) {
+                this._x = x;this._segmentChanged();
+            }, enumerable: true });
+        Object.defineProperty(window.SVGPathSegCurvetoQuadraticSmoothRel.prototype, "y", { get: function get() {
+                return this._y;
+            }, set: function set(y) {
+                this._y = y;this._segmentChanged();
+            }, enumerable: true });
+
+        // Add createSVGPathSeg* functions to window.SVGPathElement.
+        // Spec: http://www.w3.org/TR/SVG11/single-page.html#paths-Interfacewindow.SVGPathElement.
+        window.SVGPathElement.prototype.createSVGPathSegClosePath = function () {
+            return new window.SVGPathSegClosePath(undefined);
+        };
+        window.SVGPathElement.prototype.createSVGPathSegMovetoAbs = function (x, y) {
+            return new window.SVGPathSegMovetoAbs(undefined, x, y);
+        };
+        window.SVGPathElement.prototype.createSVGPathSegMovetoRel = function (x, y) {
+            return new window.SVGPathSegMovetoRel(undefined, x, y);
+        };
+        window.SVGPathElement.prototype.createSVGPathSegLinetoAbs = function (x, y) {
+            return new window.SVGPathSegLinetoAbs(undefined, x, y);
+        };
+        window.SVGPathElement.prototype.createSVGPathSegLinetoRel = function (x, y) {
+            return new window.SVGPathSegLinetoRel(undefined, x, y);
+        };
+        window.SVGPathElement.prototype.createSVGPathSegCurvetoCubicAbs = function (x, y, x1, y1, x2, y2) {
+            return new window.SVGPathSegCurvetoCubicAbs(undefined, x, y, x1, y1, x2, y2);
+        };
+        window.SVGPathElement.prototype.createSVGPathSegCurvetoCubicRel = function (x, y, x1, y1, x2, y2) {
+            return new window.SVGPathSegCurvetoCubicRel(undefined, x, y, x1, y1, x2, y2);
+        };
+        window.SVGPathElement.prototype.createSVGPathSegCurvetoQuadraticAbs = function (x, y, x1, y1) {
+            return new window.SVGPathSegCurvetoQuadraticAbs(undefined, x, y, x1, y1);
+        };
+        window.SVGPathElement.prototype.createSVGPathSegCurvetoQuadraticRel = function (x, y, x1, y1) {
+            return new window.SVGPathSegCurvetoQuadraticRel(undefined, x, y, x1, y1);
+        };
+        window.SVGPathElement.prototype.createSVGPathSegArcAbs = function (x, y, r1, r2, angle, largeArcFlag, sweepFlag) {
+            return new window.SVGPathSegArcAbs(undefined, x, y, r1, r2, angle, largeArcFlag, sweepFlag);
+        };
+        window.SVGPathElement.prototype.createSVGPathSegArcRel = function (x, y, r1, r2, angle, largeArcFlag, sweepFlag) {
+            return new window.SVGPathSegArcRel(undefined, x, y, r1, r2, angle, largeArcFlag, sweepFlag);
+        };
+        window.SVGPathElement.prototype.createSVGPathSegLinetoHorizontalAbs = function (x) {
+            return new window.SVGPathSegLinetoHorizontalAbs(undefined, x);
+        };
+        window.SVGPathElement.prototype.createSVGPathSegLinetoHorizontalRel = function (x) {
+            return new window.SVGPathSegLinetoHorizontalRel(undefined, x);
+        };
+        window.SVGPathElement.prototype.createSVGPathSegLinetoVerticalAbs = function (y) {
+            return new window.SVGPathSegLinetoVerticalAbs(undefined, y);
+        };
+        window.SVGPathElement.prototype.createSVGPathSegLinetoVerticalRel = function (y) {
+            return new window.SVGPathSegLinetoVerticalRel(undefined, y);
+        };
+        window.SVGPathElement.prototype.createSVGPathSegCurvetoCubicSmoothAbs = function (x, y, x2, y2) {
+            return new window.SVGPathSegCurvetoCubicSmoothAbs(undefined, x, y, x2, y2);
+        };
+        window.SVGPathElement.prototype.createSVGPathSegCurvetoCubicSmoothRel = function (x, y, x2, y2) {
+            return new window.SVGPathSegCurvetoCubicSmoothRel(undefined, x, y, x2, y2);
+        };
+        window.SVGPathElement.prototype.createSVGPathSegCurvetoQuadraticSmoothAbs = function (x, y) {
+            return new window.SVGPathSegCurvetoQuadraticSmoothAbs(undefined, x, y);
+        };
+        window.SVGPathElement.prototype.createSVGPathSegCurvetoQuadraticSmoothRel = function (x, y) {
+            return new window.SVGPathSegCurvetoQuadraticSmoothRel(undefined, x, y);
+        };
+
+        if (!("getPathSegAtLength" in window.SVGPathElement.prototype)) {
+            // Add getPathSegAtLength to SVGPathElement.
+            // Spec: https://www.w3.org/TR/SVG11/single-page.html#paths-__svg__SVGPathElement__getPathSegAtLength
+            // This polyfill requires SVGPathElement.getTotalLength to implement the distance-along-a-path algorithm.
+            window.SVGPathElement.prototype.getPathSegAtLength = function (distance) {
+                if (distance === undefined || !isFinite(distance)) throw "Invalid arguments.";
+
+                var measurementElement = document.createElementNS("http://www.w3.org/2000/svg", "path");
+                measurementElement.setAttribute("d", this.getAttribute("d"));
+                var lastPathSegment = measurementElement.pathSegList.numberOfItems - 1;
+
+                // If the path is empty, return 0.
+                if (lastPathSegment <= 0) return 0;
+
+                do {
+                    measurementElement.pathSegList.removeItem(lastPathSegment);
+                    if (distance > measurementElement.getTotalLength()) break;
+                    lastPathSegment--;
+                } while (lastPathSegment > 0);
+                return lastPathSegment;
+            };
+        }
+    }
+
+    if (!("SVGPathSegList" in window)) {
+        // Spec: http://www.w3.org/TR/SVG11/single-page.html#paths-InterfaceSVGPathSegList
+        window.SVGPathSegList = function (pathElement) {
+            this._pathElement = pathElement;
+            this._list = this._parsePath(this._pathElement.getAttribute("d"));
+
+            // Use a MutationObserver to catch changes to the path's "d" attribute.
+            this._mutationObserverConfig = { "attributes": true, "attributeFilter": ["d"] };
+            this._pathElementMutationObserver = new MutationObserver(this._updateListFromPathMutations.bind(this));
+            this._pathElementMutationObserver.observe(this._pathElement, this._mutationObserverConfig);
+        };
+
+        window.SVGPathSegList.prototype.classname = "SVGPathSegList";
+
+        Object.defineProperty(window.SVGPathSegList.prototype, "numberOfItems", {
+            get: function get() {
+                this._checkPathSynchronizedToList();
+                return this._list.length;
+            },
+            enumerable: true
+        });
+
+        // Add the pathSegList accessors to window.SVGPathElement.
+        // Spec: http://www.w3.org/TR/SVG11/single-page.html#paths-InterfaceSVGAnimatedPathData
+        Object.defineProperty(window.SVGPathElement.prototype, "pathSegList", {
+            get: function get() {
+                if (!this._pathSegList) this._pathSegList = new window.SVGPathSegList(this);
+                return this._pathSegList;
+            },
+            enumerable: true
+        });
+        // FIXME: The following are not implemented and simply return window.SVGPathElement.pathSegList.
+        Object.defineProperty(window.SVGPathElement.prototype, "normalizedPathSegList", { get: function get() {
+                return this.pathSegList;
+            }, enumerable: true });
+        Object.defineProperty(window.SVGPathElement.prototype, "animatedPathSegList", { get: function get() {
+                return this.pathSegList;
+            }, enumerable: true });
+        Object.defineProperty(window.SVGPathElement.prototype, "animatedNormalizedPathSegList", { get: function get() {
+                return this.pathSegList;
+            }, enumerable: true });
+
+        // Process any pending mutations to the path element and update the list as needed.
+        // This should be the first call of all public functions and is needed because
+        // MutationObservers are not synchronous so we can have pending asynchronous mutations.
+        window.SVGPathSegList.prototype._checkPathSynchronizedToList = function () {
+            this._updateListFromPathMutations(this._pathElementMutationObserver.takeRecords());
+        };
+
+        window.SVGPathSegList.prototype._updateListFromPathMutations = function (mutationRecords) {
+            if (!this._pathElement) return;
+            var hasPathMutations = false;
+            mutationRecords.forEach(function (record) {
+                if (record.attributeName == "d") hasPathMutations = true;
+            });
+            if (hasPathMutations) this._list = this._parsePath(this._pathElement.getAttribute("d"));
+        };
+
+        // Serialize the list and update the path's 'd' attribute.
+        window.SVGPathSegList.prototype._writeListToPath = function () {
+            this._pathElementMutationObserver.disconnect();
+            this._pathElement.setAttribute("d", window.SVGPathSegList._pathSegArrayAsString(this._list));
+            this._pathElementMutationObserver.observe(this._pathElement, this._mutationObserverConfig);
+        };
+
+        // When a path segment changes the list needs to be synchronized back to the path element.
+        window.SVGPathSegList.prototype.segmentChanged = function (pathSeg) {
+            this._writeListToPath();
+        };
+
+        window.SVGPathSegList.prototype.clear = function () {
+            this._checkPathSynchronizedToList();
+
+            this._list.forEach(function (pathSeg) {
+                pathSeg._owningPathSegList = null;
+            });
+            this._list = [];
+            this._writeListToPath();
+        };
+
+        window.SVGPathSegList.prototype.initialize = function (newItem) {
+            this._checkPathSynchronizedToList();
+
+            this._list = [newItem];
+            newItem._owningPathSegList = this;
+            this._writeListToPath();
+            return newItem;
+        };
+
+        window.SVGPathSegList.prototype._checkValidIndex = function (index) {
+            if (isNaN(index) || index < 0 || index >= this.numberOfItems) throw "INDEX_SIZE_ERR";
+        };
+
+        window.SVGPathSegList.prototype.getItem = function (index) {
+            this._checkPathSynchronizedToList();
+
+            this._checkValidIndex(index);
+            return this._list[index];
+        };
+
+        window.SVGPathSegList.prototype.insertItemBefore = function (newItem, index) {
+            this._checkPathSynchronizedToList();
+
+            // Spec: If the index is greater than or equal to numberOfItems, then the new item is appended to the end of the list.
+            if (index > this.numberOfItems) index = this.numberOfItems;
+            if (newItem._owningPathSegList) {
+                // SVG2 spec says to make a copy.
+                newItem = newItem.clone();
+            }
+            this._list.splice(index, 0, newItem);
+            newItem._owningPathSegList = this;
+            this._writeListToPath();
+            return newItem;
+        };
+
+        window.SVGPathSegList.prototype.replaceItem = function (newItem, index) {
+            this._checkPathSynchronizedToList();
+
+            if (newItem._owningPathSegList) {
+                // SVG2 spec says to make a copy.
+                newItem = newItem.clone();
+            }
+            this._checkValidIndex(index);
+            this._list[index] = newItem;
+            newItem._owningPathSegList = this;
+            this._writeListToPath();
+            return newItem;
+        };
+
+        window.SVGPathSegList.prototype.removeItem = function (index) {
+            this._checkPathSynchronizedToList();
+
+            this._checkValidIndex(index);
+            var item = this._list[index];
+            this._list.splice(index, 1);
+            this._writeListToPath();
+            return item;
+        };
+
+        window.SVGPathSegList.prototype.appendItem = function (newItem) {
+            this._checkPathSynchronizedToList();
+
+            if (newItem._owningPathSegList) {
+                // SVG2 spec says to make a copy.
+                newItem = newItem.clone();
+            }
+            this._list.push(newItem);
+            newItem._owningPathSegList = this;
+            // TODO: Optimize this to just append to the existing attribute.
+            this._writeListToPath();
+            return newItem;
+        };
+
+        window.SVGPathSegList._pathSegArrayAsString = function (pathSegArray) {
+            var string = "";
+            var first = true;
+            pathSegArray.forEach(function (pathSeg) {
+                if (first) {
+                    first = false;
+                    string += pathSeg._asPathString();
+                } else {
+                    string += " " + pathSeg._asPathString();
+                }
+            });
+            return string;
+        };
+
+        // This closely follows SVGPathParser::parsePath from Source/core/svg/SVGPathParser.cpp.
+        window.SVGPathSegList.prototype._parsePath = function (string) {
+            if (!string || string.length == 0) return [];
+
+            var owningPathSegList = this;
+
+            var Builder = function Builder() {
+                this.pathSegList = [];
+            };
+
+            Builder.prototype.appendSegment = function (pathSeg) {
+                this.pathSegList.push(pathSeg);
+            };
+
+            var Source = function Source(string) {
+                this._string = string;
+                this._currentIndex = 0;
+                this._endIndex = this._string.length;
+                this._previousCommand = window.SVGPathSeg.PATHSEG_UNKNOWN;
+
+                this._skipOptionalSpaces();
+            };
+
+            Source.prototype._isCurrentSpace = function () {
+                var character = this._string[this._currentIndex];
+                return character <= " " && (character == " " || character == "\n" || character == "\t" || character == "\r" || character == "\f");
+            };
+
+            Source.prototype._skipOptionalSpaces = function () {
+                while (this._currentIndex < this._endIndex && this._isCurrentSpace()) {
+                    this._currentIndex++;
+                }return this._currentIndex < this._endIndex;
+            };
+
+            Source.prototype._skipOptionalSpacesOrDelimiter = function () {
+                if (this._currentIndex < this._endIndex && !this._isCurrentSpace() && this._string.charAt(this._currentIndex) != ",") return false;
+                if (this._skipOptionalSpaces()) {
+                    if (this._currentIndex < this._endIndex && this._string.charAt(this._currentIndex) == ",") {
+                        this._currentIndex++;
+                        this._skipOptionalSpaces();
+                    }
+                }
+                return this._currentIndex < this._endIndex;
+            };
+
+            Source.prototype.hasMoreData = function () {
+                return this._currentIndex < this._endIndex;
+            };
+
+            Source.prototype.peekSegmentType = function () {
+                var lookahead = this._string[this._currentIndex];
+                return this._pathSegTypeFromChar(lookahead);
+            };
+
+            Source.prototype._pathSegTypeFromChar = function (lookahead) {
+                switch (lookahead) {
+                    case "Z":
+                    case "z":
+                        return window.SVGPathSeg.PATHSEG_CLOSEPATH;
+                    case "M":
+                        return window.SVGPathSeg.PATHSEG_MOVETO_ABS;
+                    case "m":
+                        return window.SVGPathSeg.PATHSEG_MOVETO_REL;
+                    case "L":
+                        return window.SVGPathSeg.PATHSEG_LINETO_ABS;
+                    case "l":
+                        return window.SVGPathSeg.PATHSEG_LINETO_REL;
+                    case "C":
+                        return window.SVGPathSeg.PATHSEG_CURVETO_CUBIC_ABS;
+                    case "c":
+                        return window.SVGPathSeg.PATHSEG_CURVETO_CUBIC_REL;
+                    case "Q":
+                        return window.SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_ABS;
+                    case "q":
+                        return window.SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_REL;
+                    case "A":
+                        return window.SVGPathSeg.PATHSEG_ARC_ABS;
+                    case "a":
+                        return window.SVGPathSeg.PATHSEG_ARC_REL;
+                    case "H":
+                        return window.SVGPathSeg.PATHSEG_LINETO_HORIZONTAL_ABS;
+                    case "h":
+                        return window.SVGPathSeg.PATHSEG_LINETO_HORIZONTAL_REL;
+                    case "V":
+                        return window.SVGPathSeg.PATHSEG_LINETO_VERTICAL_ABS;
+                    case "v":
+                        return window.SVGPathSeg.PATHSEG_LINETO_VERTICAL_REL;
+                    case "S":
+                        return window.SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_ABS;
+                    case "s":
+                        return window.SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_REL;
+                    case "T":
+                        return window.SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_SMOOTH_ABS;
+                    case "t":
+                        return window.SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_SMOOTH_REL;
+                    default:
+                        return window.SVGPathSeg.PATHSEG_UNKNOWN;
+                }
+            };
+
+            Source.prototype._nextCommandHelper = function (lookahead, previousCommand) {
+                // Check for remaining coordinates in the current command.
+                if ((lookahead == "+" || lookahead == "-" || lookahead == "." || lookahead >= "0" && lookahead <= "9") && previousCommand != window.SVGPathSeg.PATHSEG_CLOSEPATH) {
+                    if (previousCommand == window.SVGPathSeg.PATHSEG_MOVETO_ABS) return window.SVGPathSeg.PATHSEG_LINETO_ABS;
+                    if (previousCommand == window.SVGPathSeg.PATHSEG_MOVETO_REL) return window.SVGPathSeg.PATHSEG_LINETO_REL;
+                    return previousCommand;
+                }
+                return window.SVGPathSeg.PATHSEG_UNKNOWN;
+            };
+
+            Source.prototype.initialCommandIsMoveTo = function () {
+                // If the path is empty it is still valid, so return true.
+                if (!this.hasMoreData()) return true;
+                var command = this.peekSegmentType();
+                // Path must start with moveTo.
+                return command == window.SVGPathSeg.PATHSEG_MOVETO_ABS || command == window.SVGPathSeg.PATHSEG_MOVETO_REL;
+            };
+
+            // Parse a number from an SVG path. This very closely follows genericParseNumber(...) from Source/core/svg/SVGParserUtilities.cpp.
+            // Spec: http://www.w3.org/TR/SVG11/single-page.html#paths-PathDataBNF
+            Source.prototype._parseNumber = function () {
+                var exponent = 0;
+                var integer = 0;
+                var frac = 1;
+                var decimal = 0;
+                var sign = 1;
+                var expsign = 1;
+
+                var startIndex = this._currentIndex;
+
+                this._skipOptionalSpaces();
+
+                // Read the sign.
+                if (this._currentIndex < this._endIndex && this._string.charAt(this._currentIndex) == "+") this._currentIndex++;else if (this._currentIndex < this._endIndex && this._string.charAt(this._currentIndex) == "-") {
+                    this._currentIndex++;
+                    sign = -1;
+                }
+
+                if (this._currentIndex == this._endIndex || (this._string.charAt(this._currentIndex) < "0" || this._string.charAt(this._currentIndex) > "9") && this._string.charAt(this._currentIndex) != ".")
+                    // The first character of a number must be one of [0-9+-.].
+                    return undefined;
+
+                // Read the integer part, build right-to-left.
+                var startIntPartIndex = this._currentIndex;
+                while (this._currentIndex < this._endIndex && this._string.charAt(this._currentIndex) >= "0" && this._string.charAt(this._currentIndex) <= "9") {
+                    this._currentIndex++;
+                } // Advance to first non-digit.
+
+                if (this._currentIndex != startIntPartIndex) {
+                    var scanIntPartIndex = this._currentIndex - 1;
+                    var multiplier = 1;
+                    while (scanIntPartIndex >= startIntPartIndex) {
+                        integer += multiplier * (this._string.charAt(scanIntPartIndex--) - "0");
+                        multiplier *= 10;
+                    }
+                }
+
+                // Read the decimals.
+                if (this._currentIndex < this._endIndex && this._string.charAt(this._currentIndex) == ".") {
+                    this._currentIndex++;
+
+                    // There must be a least one digit following the .
+                    if (this._currentIndex >= this._endIndex || this._string.charAt(this._currentIndex) < "0" || this._string.charAt(this._currentIndex) > "9") return undefined;
+                    while (this._currentIndex < this._endIndex && this._string.charAt(this._currentIndex) >= "0" && this._string.charAt(this._currentIndex) <= "9") {
+                        frac *= 10;
+                        decimal += (this._string.charAt(this._currentIndex) - "0") / frac;
+                        this._currentIndex += 1;
+                    }
+                }
+
+                // Read the exponent part.
+                if (this._currentIndex != startIndex && this._currentIndex + 1 < this._endIndex && (this._string.charAt(this._currentIndex) == "e" || this._string.charAt(this._currentIndex) == "E") && this._string.charAt(this._currentIndex + 1) != "x" && this._string.charAt(this._currentIndex + 1) != "m") {
+                    this._currentIndex++;
+
+                    // Read the sign of the exponent.
+                    if (this._string.charAt(this._currentIndex) == "+") {
+                        this._currentIndex++;
+                    } else if (this._string.charAt(this._currentIndex) == "-") {
+                        this._currentIndex++;
+                        expsign = -1;
+                    }
+
+                    // There must be an exponent.
+                    if (this._currentIndex >= this._endIndex || this._string.charAt(this._currentIndex) < "0" || this._string.charAt(this._currentIndex) > "9") return undefined;
+
+                    while (this._currentIndex < this._endIndex && this._string.charAt(this._currentIndex) >= "0" && this._string.charAt(this._currentIndex) <= "9") {
+                        exponent *= 10;
+                        exponent += this._string.charAt(this._currentIndex) - "0";
+                        this._currentIndex++;
+                    }
+                }
+
+                var number = integer + decimal;
+                number *= sign;
+
+                if (exponent) number *= Math.pow(10, expsign * exponent);
+
+                if (startIndex == this._currentIndex) return undefined;
+
+                this._skipOptionalSpacesOrDelimiter();
+
+                return number;
+            };
+
+            Source.prototype._parseArcFlag = function () {
+                if (this._currentIndex >= this._endIndex) return undefined;
+                var flag = false;
+                var flagChar = this._string.charAt(this._currentIndex++);
+                if (flagChar == "0") flag = false;else if (flagChar == "1") flag = true;else return undefined;
+
+                this._skipOptionalSpacesOrDelimiter();
+                return flag;
+            };
+
+            Source.prototype.parseSegment = function () {
+                var lookahead = this._string[this._currentIndex];
+                var command = this._pathSegTypeFromChar(lookahead);
+                if (command == window.SVGPathSeg.PATHSEG_UNKNOWN) {
+                    // Possibly an implicit command. Not allowed if this is the first command.
+                    if (this._previousCommand == window.SVGPathSeg.PATHSEG_UNKNOWN) return null;
+                    command = this._nextCommandHelper(lookahead, this._previousCommand);
+                    if (command == window.SVGPathSeg.PATHSEG_UNKNOWN) return null;
+                } else {
+                    this._currentIndex++;
+                }
+
+                this._previousCommand = command;
+
+                switch (command) {
+                    case window.SVGPathSeg.PATHSEG_MOVETO_REL:
+                        return new window.SVGPathSegMovetoRel(owningPathSegList, this._parseNumber(), this._parseNumber());
+                    case window.SVGPathSeg.PATHSEG_MOVETO_ABS:
+                        return new window.SVGPathSegMovetoAbs(owningPathSegList, this._parseNumber(), this._parseNumber());
+                    case window.SVGPathSeg.PATHSEG_LINETO_REL:
+                        return new window.SVGPathSegLinetoRel(owningPathSegList, this._parseNumber(), this._parseNumber());
+                    case window.SVGPathSeg.PATHSEG_LINETO_ABS:
+                        return new window.SVGPathSegLinetoAbs(owningPathSegList, this._parseNumber(), this._parseNumber());
+                    case window.SVGPathSeg.PATHSEG_LINETO_HORIZONTAL_REL:
+                        return new window.SVGPathSegLinetoHorizontalRel(owningPathSegList, this._parseNumber());
+                    case window.SVGPathSeg.PATHSEG_LINETO_HORIZONTAL_ABS:
+                        return new window.SVGPathSegLinetoHorizontalAbs(owningPathSegList, this._parseNumber());
+                    case window.SVGPathSeg.PATHSEG_LINETO_VERTICAL_REL:
+                        return new window.SVGPathSegLinetoVerticalRel(owningPathSegList, this._parseNumber());
+                    case window.SVGPathSeg.PATHSEG_LINETO_VERTICAL_ABS:
+                        return new window.SVGPathSegLinetoVerticalAbs(owningPathSegList, this._parseNumber());
+                    case window.SVGPathSeg.PATHSEG_CLOSEPATH:
+                        this._skipOptionalSpaces();
+                        return new window.SVGPathSegClosePath(owningPathSegList);
+                    case window.SVGPathSeg.PATHSEG_CURVETO_CUBIC_REL:
+                        var points = { x1: this._parseNumber(), y1: this._parseNumber(), x2: this._parseNumber(), y2: this._parseNumber(), x: this._parseNumber(), y: this._parseNumber() };
+                        return new window.SVGPathSegCurvetoCubicRel(owningPathSegList, points.x, points.y, points.x1, points.y1, points.x2, points.y2);
+                    case window.SVGPathSeg.PATHSEG_CURVETO_CUBIC_ABS:
+                        var points = { x1: this._parseNumber(), y1: this._parseNumber(), x2: this._parseNumber(), y2: this._parseNumber(), x: this._parseNumber(), y: this._parseNumber() };
+                        return new window.SVGPathSegCurvetoCubicAbs(owningPathSegList, points.x, points.y, points.x1, points.y1, points.x2, points.y2);
+                    case window.SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_REL:
+                        var points = { x2: this._parseNumber(), y2: this._parseNumber(), x: this._parseNumber(), y: this._parseNumber() };
+                        return new window.SVGPathSegCurvetoCubicSmoothRel(owningPathSegList, points.x, points.y, points.x2, points.y2);
+                    case window.SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_ABS:
+                        var points = { x2: this._parseNumber(), y2: this._parseNumber(), x: this._parseNumber(), y: this._parseNumber() };
+                        return new window.SVGPathSegCurvetoCubicSmoothAbs(owningPathSegList, points.x, points.y, points.x2, points.y2);
+                    case window.SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_REL:
+                        var points = { x1: this._parseNumber(), y1: this._parseNumber(), x: this._parseNumber(), y: this._parseNumber() };
+                        return new window.SVGPathSegCurvetoQuadraticRel(owningPathSegList, points.x, points.y, points.x1, points.y1);
+                    case window.SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_ABS:
+                        var points = { x1: this._parseNumber(), y1: this._parseNumber(), x: this._parseNumber(), y: this._parseNumber() };
+                        return new window.SVGPathSegCurvetoQuadraticAbs(owningPathSegList, points.x, points.y, points.x1, points.y1);
+                    case window.SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_SMOOTH_REL:
+                        return new window.SVGPathSegCurvetoQuadraticSmoothRel(owningPathSegList, this._parseNumber(), this._parseNumber());
+                    case window.SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_SMOOTH_ABS:
+                        return new window.SVGPathSegCurvetoQuadraticSmoothAbs(owningPathSegList, this._parseNumber(), this._parseNumber());
+                    case window.SVGPathSeg.PATHSEG_ARC_REL:
+                        var points = { x1: this._parseNumber(), y1: this._parseNumber(), arcAngle: this._parseNumber(), arcLarge: this._parseArcFlag(), arcSweep: this._parseArcFlag(), x: this._parseNumber(), y: this._parseNumber() };
+                        return new window.SVGPathSegArcRel(owningPathSegList, points.x, points.y, points.x1, points.y1, points.arcAngle, points.arcLarge, points.arcSweep);
+                    case window.SVGPathSeg.PATHSEG_ARC_ABS:
+                        var points = { x1: this._parseNumber(), y1: this._parseNumber(), arcAngle: this._parseNumber(), arcLarge: this._parseArcFlag(), arcSweep: this._parseArcFlag(), x: this._parseNumber(), y: this._parseNumber() };
+                        return new window.SVGPathSegArcAbs(owningPathSegList, points.x, points.y, points.x1, points.y1, points.arcAngle, points.arcLarge, points.arcSweep);
+                    default:
+                        throw "Unknown path seg type.";
+                }
+            };
+
+            var builder = new Builder();
+            var source = new Source(string);
+
+            if (!source.initialCommandIsMoveTo()) return [];
+            while (source.hasMoreData()) {
+                var pathSeg = source.parseSegment();
+                if (!pathSeg) return [];
+                builder.appendSegment(pathSeg);
+            }
+
+            return builder.pathSegList;
+        };
+    }
+})();
+
+/* jshint ignore:end */
+
+c3_chart_fn.axis = function () {};
+c3_chart_fn.axis.labels = function (labels) {
+    var $$ = this.internal;
+    if (arguments.length) {
+        Object.keys(labels).forEach(function (axisId) {
+            $$.axis.setLabelText(axisId, labels[axisId]);
+        });
+        $$.axis.updateLabels();
+    }
+    // TODO: return some values?
+};
+c3_chart_fn.axis.max = function (max) {
+    var $$ = this.internal,
+        config = $$.config;
+    if (arguments.length) {
+        if ((typeof max === 'undefined' ? 'undefined' : _typeof(max)) === 'object') {
+            if (isValue(max.x)) {
+                config.axis_x_max = max.x;
+            }
+            if (isValue(max.y)) {
+                config.axis_y_max = max.y;
+            }
+            if (isValue(max.y2)) {
+                config.axis_y2_max = max.y2;
+            }
+        } else {
+            config.axis_y_max = config.axis_y2_max = max;
+        }
+        $$.redraw({ withUpdateOrgXDomain: true, withUpdateXDomain: true });
+    } else {
+        return {
+            x: config.axis_x_max,
+            y: config.axis_y_max,
+            y2: config.axis_y2_max
+        };
+    }
+};
+c3_chart_fn.axis.min = function (min) {
+    var $$ = this.internal,
+        config = $$.config;
+    if (arguments.length) {
+        if ((typeof min === 'undefined' ? 'undefined' : _typeof(min)) === 'object') {
+            if (isValue(min.x)) {
+                config.axis_x_min = min.x;
+            }
+            if (isValue(min.y)) {
+                config.axis_y_min = min.y;
+            }
+            if (isValue(min.y2)) {
+                config.axis_y2_min = min.y2;
+            }
+        } else {
+            config.axis_y_min = config.axis_y2_min = min;
+        }
+        $$.redraw({ withUpdateOrgXDomain: true, withUpdateXDomain: true });
+    } else {
+        return {
+            x: config.axis_x_min,
+            y: config.axis_y_min,
+            y2: config.axis_y2_min
+        };
+    }
+};
+c3_chart_fn.axis.range = function (range) {
+    if (arguments.length) {
+        if (isDefined(range.max)) {
+            this.axis.max(range.max);
+        }
+        if (isDefined(range.min)) {
+            this.axis.min(range.min);
+        }
+    } else {
+        return {
+            max: this.axis.max(),
+            min: this.axis.min()
+        };
+    }
+};
+
+c3_chart_fn.category = function (i, category) {
+    var $$ = this.internal,
+        config = $$.config;
+    if (arguments.length > 1) {
+        config.axis_x_categories[i] = category;
+        $$.redraw();
+    }
+    return config.axis_x_categories[i];
+};
+c3_chart_fn.categories = function (categories) {
+    var $$ = this.internal,
+        config = $$.config;
+    if (!arguments.length) {
+        return config.axis_x_categories;
+    }
+    config.axis_x_categories = categories;
+    $$.redraw();
+    return config.axis_x_categories;
+};
+
+c3_chart_fn.resize = function (size) {
+    var $$ = this.internal,
+        config = $$.config;
+    config.size_width = size ? size.width : null;
+    config.size_height = size ? size.height : null;
+    this.flush();
+};
+
+c3_chart_fn.flush = function () {
+    var $$ = this.internal;
+    $$.updateAndRedraw({ withLegend: true, withTransition: false, withTransitionForTransform: false });
+};
+
+c3_chart_fn.destroy = function () {
+    var $$ = this.internal;
+
+    window.clearInterval($$.intervalForObserveInserted);
+
+    if ($$.resizeTimeout !== undefined) {
+        window.clearTimeout($$.resizeTimeout);
+    }
+
+    if (window.detachEvent) {
+        window.detachEvent('onresize', $$.resizeFunction);
+    } else if (window.removeEventListener) {
+        window.removeEventListener('resize', $$.resizeFunction);
+    } else {
+        var wrapper = window.onresize;
+        // check if no one else removed our wrapper and remove our resizeFunction from it
+        if (wrapper && wrapper.add && wrapper.remove) {
+            wrapper.remove($$.resizeFunction);
+        }
+    }
+
+    $$.selectChart.classed('c3', false).html("");
+
+    // MEMO: this is needed because the reference of some elements will not be released, then memory leak will happen.
+    Object.keys($$).forEach(function (key) {
+        $$[key] = null;
+    });
+
+    return null;
+};
+
+// TODO: fix
+c3_chart_fn.color = function (id) {
+    var $$ = this.internal;
+    return $$.color(id); // more patterns
+};
+
+c3_chart_fn.data = function (targetIds) {
+    var targets = this.internal.data.targets;
+    return typeof targetIds === 'undefined' ? targets : targets.filter(function (t) {
+        return [].concat(targetIds).indexOf(t.id) >= 0;
+    });
+};
+c3_chart_fn.data.shown = function (targetIds) {
+    return this.internal.filterTargetsToShow(this.data(targetIds));
+};
+c3_chart_fn.data.values = function (targetId) {
+    var targets,
+        values = null;
+    if (targetId) {
+        targets = this.data(targetId);
+        values = targets[0] ? targets[0].values.map(function (d) {
+            return d.value;
+        }) : null;
+    }
+    return values;
+};
+c3_chart_fn.data.names = function (names) {
+    this.internal.clearLegendItemTextBoxCache();
+    return this.internal.updateDataAttributes('names', names);
+};
+c3_chart_fn.data.colors = function (colors) {
+    return this.internal.updateDataAttributes('colors', colors);
+};
+c3_chart_fn.data.axes = function (axes) {
+    return this.internal.updateDataAttributes('axes', axes);
+};
+
+c3_chart_fn.flow = function (args) {
+    var $$ = this.internal,
+        targets,
+        data,
+        notfoundIds = [],
+        orgDataCount = $$.getMaxDataCount(),
+        dataCount,
+        domain,
+        baseTarget,
+        baseValue,
+        length = 0,
+        tail = 0,
+        diff,
+        to;
+
+    if (args.json) {
+        data = $$.convertJsonToData(args.json, args.keys);
+    } else if (args.rows) {
+        data = $$.convertRowsToData(args.rows);
+    } else if (args.columns) {
+        data = $$.convertColumnsToData(args.columns);
+    } else {
+        return;
+    }
+    targets = $$.convertDataToTargets(data, true);
+
+    // Update/Add data
+    $$.data.targets.forEach(function (t) {
+        var found = false,
+            i,
+            j;
+        for (i = 0; i < targets.length; i++) {
+            if (t.id === targets[i].id) {
+                found = true;
+
+                if (t.values[t.values.length - 1]) {
+                    tail = t.values[t.values.length - 1].index + 1;
+                }
+                length = targets[i].values.length;
+
+                for (j = 0; j < length; j++) {
+                    targets[i].values[j].index = tail + j;
+                    if (!$$.isTimeSeries()) {
+                        targets[i].values[j].x = tail + j;
+                    }
+                }
+                t.values = t.values.concat(targets[i].values);
+
+                targets.splice(i, 1);
+                break;
+            }
+        }
+        if (!found) {
+            notfoundIds.push(t.id);
+        }
+    });
+
+    // Append null for not found targets
+    $$.data.targets.forEach(function (t) {
+        var i, j;
+        for (i = 0; i < notfoundIds.length; i++) {
+            if (t.id === notfoundIds[i]) {
+                tail = t.values[t.values.length - 1].index + 1;
+                for (j = 0; j < length; j++) {
+                    t.values.push({
+                        id: t.id,
+                        index: tail + j,
+                        x: $$.isTimeSeries() ? $$.getOtherTargetX(tail + j) : tail + j,
+                        value: null
+                    });
+                }
+            }
+        }
+    });
+
+    // Generate null values for new target
+    if ($$.data.targets.length) {
+        targets.forEach(function (t) {
+            var i,
+                missing = [];
+            for (i = $$.data.targets[0].values[0].index; i < tail; i++) {
+                missing.push({
+                    id: t.id,
+                    index: i,
+                    x: $$.isTimeSeries() ? $$.getOtherTargetX(i) : i,
+                    value: null
+                });
+            }
+            t.values.forEach(function (v) {
+                v.index += tail;
+                if (!$$.isTimeSeries()) {
+                    v.x += tail;
+                }
+            });
+            t.values = missing.concat(t.values);
+        });
+    }
+    $$.data.targets = $$.data.targets.concat(targets); // add remained
+
+    // check data count because behavior needs to change when it's only one
+    dataCount = $$.getMaxDataCount();
+    baseTarget = $$.data.targets[0];
+    baseValue = baseTarget.values[0];
+
+    // Update length to flow if needed
+    if (isDefined(args.to)) {
+        length = 0;
+        to = $$.isTimeSeries() ? $$.parseDate(args.to) : args.to;
+        baseTarget.values.forEach(function (v) {
+            if (v.x < to) {
+                length++;
+            }
+        });
+    } else if (isDefined(args.length)) {
+        length = args.length;
+    }
+
+    // If only one data, update the domain to flow from left edge of the chart
+    if (!orgDataCount) {
+        if ($$.isTimeSeries()) {
+            if (baseTarget.values.length > 1) {
+                diff = baseTarget.values[baseTarget.values.length - 1].x - baseValue.x;
+            } else {
+                diff = baseValue.x - $$.getXDomain($$.data.targets)[0];
+            }
+        } else {
+            diff = 1;
+        }
+        domain = [baseValue.x - diff, baseValue.x];
+        $$.updateXDomain(null, true, true, false, domain);
+    } else if (orgDataCount === 1) {
+        if ($$.isTimeSeries()) {
+            diff = (baseTarget.values[baseTarget.values.length - 1].x - baseValue.x) / 2;
+            domain = [new Date(+baseValue.x - diff), new Date(+baseValue.x + diff)];
+            $$.updateXDomain(null, true, true, false, domain);
+        }
+    }
+
+    // Set targets
+    $$.updateTargets($$.data.targets);
+
+    // Redraw with new targets
+    $$.redraw({
+        flow: {
+            index: baseValue.index,
+            length: length,
+            duration: isValue(args.duration) ? args.duration : $$.config.transition_duration,
+            done: args.done,
+            orgDataCount: orgDataCount
+        },
+        withLegend: true,
+        withTransition: orgDataCount > 1,
+        withTrimXDomain: false,
+        withUpdateXAxis: true
+    });
+};
+
+c3_chart_internal_fn.generateFlow = function (args) {
+    var $$ = this,
+        config = $$.config,
+        d3 = $$.d3;
+
+    return function () {
+        var targets = args.targets,
+            flow = args.flow,
+            drawBar = args.drawBar,
+            drawLine = args.drawLine,
+            drawArea = args.drawArea,
+            cx = args.cx,
+            cy = args.cy,
+            xv = args.xv,
+            xForText = args.xForText,
+            yForText = args.yForText,
+            duration = args.duration;
+
+        var translateX,
+            scaleX = 1,
+            transform,
+            flowIndex = flow.index,
+            flowLength = flow.length,
+            flowStart = $$.getValueOnIndex($$.data.targets[0].values, flowIndex),
+            flowEnd = $$.getValueOnIndex($$.data.targets[0].values, flowIndex + flowLength),
+            orgDomain = $$.x.domain(),
+            domain,
+            durationForFlow = flow.duration || duration,
+            done = flow.done || function () {},
+            wait = $$.generateWait();
+
+        var xgrid = $$.xgrid || d3.selectAll([]),
+            xgridLines = $$.xgridLines || d3.selectAll([]),
+            mainRegion = $$.mainRegion || d3.selectAll([]),
+            mainText = $$.mainText || d3.selectAll([]),
+            mainBar = $$.mainBar || d3.selectAll([]),
+            mainLine = $$.mainLine || d3.selectAll([]),
+            mainArea = $$.mainArea || d3.selectAll([]),
+            mainCircle = $$.mainCircle || d3.selectAll([]);
+
+        // set flag
+        $$.flowing = true;
+
+        // remove head data after rendered
+        $$.data.targets.forEach(function (d) {
+            d.values.splice(0, flowLength);
+        });
+
+        // update x domain to generate axis elements for flow
+        domain = $$.updateXDomain(targets, true, true);
+        // update elements related to x scale
+        if ($$.updateXGrid) {
+            $$.updateXGrid(true);
+        }
+
+        // generate transform to flow
+        if (!flow.orgDataCount) {
+            // if empty
+            if ($$.data.targets[0].values.length !== 1) {
+                translateX = $$.x(orgDomain[0]) - $$.x(domain[0]);
+            } else {
+                if ($$.isTimeSeries()) {
+                    flowStart = $$.getValueOnIndex($$.data.targets[0].values, 0);
+                    flowEnd = $$.getValueOnIndex($$.data.targets[0].values, $$.data.targets[0].values.length - 1);
+                    translateX = $$.x(flowStart.x) - $$.x(flowEnd.x);
+                } else {
+                    translateX = diffDomain(domain) / 2;
+                }
+            }
+        } else if (flow.orgDataCount === 1 || (flowStart && flowStart.x) === (flowEnd && flowEnd.x)) {
+            translateX = $$.x(orgDomain[0]) - $$.x(domain[0]);
+        } else {
+            if ($$.isTimeSeries()) {
+                translateX = $$.x(orgDomain[0]) - $$.x(domain[0]);
+            } else {
+                translateX = $$.x(flowStart.x) - $$.x(flowEnd.x);
+            }
+        }
+        scaleX = diffDomain(orgDomain) / diffDomain(domain);
+        transform = 'translate(' + translateX + ',0) scale(' + scaleX + ',1)';
+
+        $$.hideXGridFocus();
+
+        d3.transition().ease('linear').duration(durationForFlow).each(function () {
+            wait.add($$.axes.x.transition().call($$.xAxis));
+            wait.add(mainBar.transition().attr('transform', transform));
+            wait.add(mainLine.transition().attr('transform', transform));
+            wait.add(mainArea.transition().attr('transform', transform));
+            wait.add(mainCircle.transition().attr('transform', transform));
+            wait.add(mainText.transition().attr('transform', transform));
+            wait.add(mainRegion.filter($$.isRegionOnX).transition().attr('transform', transform));
+            wait.add(xgrid.transition().attr('transform', transform));
+            wait.add(xgridLines.transition().attr('transform', transform));
+        }).call(wait, function () {
+            var i,
+                shapes = [],
+                texts = [],
+                eventRects = [];
+
+            // remove flowed elements
+            if (flowLength) {
+                for (i = 0; i < flowLength; i++) {
+                    shapes.push('.' + CLASS.shape + '-' + (flowIndex + i));
+                    texts.push('.' + CLASS.text + '-' + (flowIndex + i));
+                    eventRects.push('.' + CLASS.eventRect + '-' + (flowIndex + i));
+                }
+                $$.svg.selectAll('.' + CLASS.shapes).selectAll(shapes).remove();
+                $$.svg.selectAll('.' + CLASS.texts).selectAll(texts).remove();
+                $$.svg.selectAll('.' + CLASS.eventRects).selectAll(eventRects).remove();
+                $$.svg.select('.' + CLASS.xgrid).remove();
+            }
+
+            // draw again for removing flowed elements and reverting attr
+            xgrid.attr('transform', null).attr($$.xgridAttr);
+            xgridLines.attr('transform', null);
+            xgridLines.select('line').attr("x1", config.axis_rotated ? 0 : xv).attr("x2", config.axis_rotated ? $$.width : xv);
+            xgridLines.select('text').attr("x", config.axis_rotated ? $$.width : 0).attr("y", xv);
+            mainBar.attr('transform', null).attr("d", drawBar);
+            mainLine.attr('transform', null).attr("d", drawLine);
+            mainArea.attr('transform', null).attr("d", drawArea);
+            mainCircle.attr('transform', null).attr("cx", cx).attr("cy", cy);
+            mainText.attr('transform', null).attr('x', xForText).attr('y', yForText).style('fill-opacity', $$.opacityForText.bind($$));
+            mainRegion.attr('transform', null);
+            mainRegion.select('rect').filter($$.isRegionOnX).attr("x", $$.regionX.bind($$)).attr("width", $$.regionWidth.bind($$));
+
+            if (config.interaction_enabled) {
+                $$.redrawEventRect();
+            }
+
+            // callback for end of flow
+            done();
+
+            $$.flowing = false;
+        });
+    };
+};
+
+c3_chart_fn.focus = function (targetIds) {
+    var $$ = this.internal,
+        candidates;
+
+    targetIds = $$.mapToTargetIds(targetIds);
+    candidates = $$.svg.selectAll($$.selectorTargets(targetIds.filter($$.isTargetToShow, $$))), this.revert();
+    this.defocus();
+    candidates.classed(CLASS.focused, true).classed(CLASS.defocused, false);
+    if ($$.hasArcType()) {
+        $$.expandArc(targetIds);
+    }
+    $$.toggleFocusLegend(targetIds, true);
+
+    $$.focusedTargetIds = targetIds;
+    $$.defocusedTargetIds = $$.defocusedTargetIds.filter(function (id) {
+        return targetIds.indexOf(id) < 0;
+    });
+};
+
+c3_chart_fn.defocus = function (targetIds) {
+    var $$ = this.internal,
+        candidates;
+
+    targetIds = $$.mapToTargetIds(targetIds);
+    candidates = $$.svg.selectAll($$.selectorTargets(targetIds.filter($$.isTargetToShow, $$))), candidates.classed(CLASS.focused, false).classed(CLASS.defocused, true);
+    if ($$.hasArcType()) {
+        $$.unexpandArc(targetIds);
+    }
+    $$.toggleFocusLegend(targetIds, false);
+
+    $$.focusedTargetIds = $$.focusedTargetIds.filter(function (id) {
+        return targetIds.indexOf(id) < 0;
+    });
+    $$.defocusedTargetIds = targetIds;
+};
+
+c3_chart_fn.revert = function (targetIds) {
+    var $$ = this.internal,
+        candidates;
+
+    targetIds = $$.mapToTargetIds(targetIds);
+    candidates = $$.svg.selectAll($$.selectorTargets(targetIds)); // should be for all targets
+
+    candidates.classed(CLASS.focused, false).classed(CLASS.defocused, false);
+    if ($$.hasArcType()) {
+        $$.unexpandArc(targetIds);
+    }
+    if ($$.config.legend_show) {
+        $$.showLegend(targetIds.filter($$.isLegendToShow.bind($$)));
+        $$.legend.selectAll($$.selectorLegends(targetIds)).filter(function () {
+            return $$.d3.select(this).classed(CLASS.legendItemFocused);
+        }).classed(CLASS.legendItemFocused, false);
+    }
+
+    $$.focusedTargetIds = [];
+    $$.defocusedTargetIds = [];
+};
+
+c3_chart_fn.xgrids = function (grids) {
+    var $$ = this.internal,
+        config = $$.config;
+    if (!grids) {
+        return config.grid_x_lines;
+    }
+    config.grid_x_lines = grids;
+    $$.redrawWithoutRescale();
+    return config.grid_x_lines;
+};
+c3_chart_fn.xgrids.add = function (grids) {
+    var $$ = this.internal;
+    return this.xgrids($$.config.grid_x_lines.concat(grids ? grids : []));
+};
+c3_chart_fn.xgrids.remove = function (params) {
+    // TODO: multiple
+    var $$ = this.internal;
+    $$.removeGridLines(params, true);
+};
+
+c3_chart_fn.ygrids = function (grids) {
+    var $$ = this.internal,
+        config = $$.config;
+    if (!grids) {
+        return config.grid_y_lines;
+    }
+    config.grid_y_lines = grids;
+    $$.redrawWithoutRescale();
+    return config.grid_y_lines;
+};
+c3_chart_fn.ygrids.add = function (grids) {
+    var $$ = this.internal;
+    return this.ygrids($$.config.grid_y_lines.concat(grids ? grids : []));
+};
+c3_chart_fn.ygrids.remove = function (params) {
+    // TODO: multiple
+    var $$ = this.internal;
+    $$.removeGridLines(params, false);
+};
+
+c3_chart_fn.groups = function (groups) {
+    var $$ = this.internal,
+        config = $$.config;
+    if (isUndefined(groups)) {
+        return config.data_groups;
+    }
+    config.data_groups = groups;
+    $$.redraw();
+    return config.data_groups;
+};
+
+c3_chart_fn.legend = function () {};
+c3_chart_fn.legend.show = function (targetIds) {
+    var $$ = this.internal;
+    $$.showLegend($$.mapToTargetIds(targetIds));
+    $$.updateAndRedraw({ withLegend: true });
+};
+c3_chart_fn.legend.hide = function (targetIds) {
+    var $$ = this.internal;
+    $$.hideLegend($$.mapToTargetIds(targetIds));
+    $$.updateAndRedraw({ withLegend: true });
+};
+
+c3_chart_fn.load = function (args) {
+    var $$ = this.internal,
+        config = $$.config;
+    // update xs if specified
+    if (args.xs) {
+        $$.addXs(args.xs);
+    }
+    // update names if exists
+    if ('names' in args) {
+        c3_chart_fn.data.names.bind(this)(args.names);
+    }
+    // update classes if exists
+    if ('classes' in args) {
+        Object.keys(args.classes).forEach(function (id) {
+            config.data_classes[id] = args.classes[id];
+        });
+    }
+    // update categories if exists
+    if ('categories' in args && $$.isCategorized()) {
+        config.axis_x_categories = args.categories;
+    }
+    // update axes if exists
+    if ('axes' in args) {
+        Object.keys(args.axes).forEach(function (id) {
+            config.data_axes[id] = args.axes[id];
+        });
+    }
+    // update colors if exists
+    if ('colors' in args) {
+        Object.keys(args.colors).forEach(function (id) {
+            config.data_colors[id] = args.colors[id];
+        });
+    }
+    // use cache if exists
+    if ('cacheIds' in args && $$.hasCaches(args.cacheIds)) {
+        $$.load($$.getCaches(args.cacheIds), args.done);
+        return;
+    }
+    // unload if needed
+    if ('unload' in args) {
+        // TODO: do not unload if target will load (included in url/rows/columns)
+        $$.unload($$.mapToTargetIds(typeof args.unload === 'boolean' && args.unload ? null : args.unload), function () {
+            $$.loadFromArgs(args);
+        });
+    } else {
+        $$.loadFromArgs(args);
+    }
+};
+
+c3_chart_fn.unload = function (args) {
+    var $$ = this.internal;
+    args = args || {};
+    if (args instanceof Array) {
+        args = { ids: args };
+    } else if (typeof args === 'string') {
+        args = { ids: [args] };
+    }
+    $$.unload($$.mapToTargetIds(args.ids), function () {
+        $$.redraw({ withUpdateOrgXDomain: true, withUpdateXDomain: true, withLegend: true });
+        if (args.done) {
+            args.done();
+        }
+    });
+};
+
+c3_chart_fn.regions = function (regions) {
+    var $$ = this.internal,
+        config = $$.config;
+    if (!regions) {
+        return config.regions;
+    }
+    config.regions = regions;
+    $$.redrawWithoutRescale();
+    return config.regions;
+};
+c3_chart_fn.regions.add = function (regions) {
+    var $$ = this.internal,
+        config = $$.config;
+    if (!regions) {
+        return config.regions;
+    }
+    config.regions = config.regions.concat(regions);
+    $$.redrawWithoutRescale();
+    return config.regions;
+};
+c3_chart_fn.regions.remove = function (options) {
+    var $$ = this.internal,
+        config = $$.config,
+        duration,
+        classes,
+        regions;
+
+    options = options || {};
+    duration = $$.getOption(options, "duration", config.transition_duration);
+    classes = $$.getOption(options, "classes", [CLASS.region]);
+
+    regions = $$.main.select('.' + CLASS.regions).selectAll(classes.map(function (c) {
+        return '.' + c;
+    }));
+    (duration ? regions.transition().duration(duration) : regions).style('opacity', 0).remove();
+
+    config.regions = config.regions.filter(function (region) {
+        var found = false;
+        if (!region['class']) {
+            return true;
+        }
+        region['class'].split(' ').forEach(function (c) {
+            if (classes.indexOf(c) >= 0) {
+                found = true;
+            }
+        });
+        return !found;
+    });
+
+    return config.regions;
+};
+
+c3_chart_fn.selected = function (targetId) {
+    var $$ = this.internal,
+        d3 = $$.d3;
+    return d3.merge($$.main.selectAll('.' + CLASS.shapes + $$.getTargetSelectorSuffix(targetId)).selectAll('.' + CLASS.shape).filter(function () {
+        return d3.select(this).classed(CLASS.SELECTED);
+    }).map(function (d) {
+        return d.map(function (d) {
+            var data = d.__data__;return data.data ? data.data : data;
+        });
+    }));
+};
+c3_chart_fn.select = function (ids, indices, resetOther) {
+    var $$ = this.internal,
+        d3 = $$.d3,
+        config = $$.config;
+    if (!config.data_selection_enabled) {
+        return;
+    }
+    $$.main.selectAll('.' + CLASS.shapes).selectAll('.' + CLASS.shape).each(function (d, i) {
+        var shape = d3.select(this),
+            id = d.data ? d.data.id : d.id,
+            toggle = $$.getToggle(this, d).bind($$),
+            isTargetId = config.data_selection_grouped || !ids || ids.indexOf(id) >= 0,
+            isTargetIndex = !indices || indices.indexOf(i) >= 0,
+            isSelected = shape.classed(CLASS.SELECTED);
+        // line/area selection not supported yet
+        if (shape.classed(CLASS.line) || shape.classed(CLASS.area)) {
+            return;
+        }
+        if (isTargetId && isTargetIndex) {
+            if (config.data_selection_isselectable(d) && !isSelected) {
+                toggle(true, shape.classed(CLASS.SELECTED, true), d, i);
+            }
+        } else if (isDefined(resetOther) && resetOther) {
+            if (isSelected) {
+                toggle(false, shape.classed(CLASS.SELECTED, false), d, i);
+            }
+        }
+    });
+};
+c3_chart_fn.unselect = function (ids, indices) {
+    var $$ = this.internal,
+        d3 = $$.d3,
+        config = $$.config;
+    if (!config.data_selection_enabled) {
+        return;
+    }
+    $$.main.selectAll('.' + CLASS.shapes).selectAll('.' + CLASS.shape).each(function (d, i) {
+        var shape = d3.select(this),
+            id = d.data ? d.data.id : d.id,
+            toggle = $$.getToggle(this, d).bind($$),
+            isTargetId = config.data_selection_grouped || !ids || ids.indexOf(id) >= 0,
+            isTargetIndex = !indices || indices.indexOf(i) >= 0,
+            isSelected = shape.classed(CLASS.SELECTED);
+        // line/area selection not supported yet
+        if (shape.classed(CLASS.line) || shape.classed(CLASS.area)) {
+            return;
+        }
+        if (isTargetId && isTargetIndex) {
+            if (config.data_selection_isselectable(d)) {
+                if (isSelected) {
+                    toggle(false, shape.classed(CLASS.SELECTED, false), d, i);
+                }
+            }
+        }
+    });
+};
+
+c3_chart_fn.show = function (targetIds, options) {
+    var $$ = this.internal,
+        targets;
+
+    targetIds = $$.mapToTargetIds(targetIds);
+    options = options || {};
+
+    $$.removeHiddenTargetIds(targetIds);
+    targets = $$.svg.selectAll($$.selectorTargets(targetIds));
+
+    targets.transition().style('opacity', 1, 'important').call($$.endall, function () {
+        targets.style('opacity', null).style('opacity', 1);
+    });
+
+    if (options.withLegend) {
+        $$.showLegend(targetIds);
+    }
+
+    $$.redraw({ withUpdateOrgXDomain: true, withUpdateXDomain: true, withLegend: true });
+};
+
+c3_chart_fn.hide = function (targetIds, options) {
+    var $$ = this.internal,
+        targets;
+
+    targetIds = $$.mapToTargetIds(targetIds);
+    options = options || {};
+
+    $$.addHiddenTargetIds(targetIds);
+    targets = $$.svg.selectAll($$.selectorTargets(targetIds));
+
+    targets.transition().style('opacity', 0, 'important').call($$.endall, function () {
+        targets.style('opacity', null).style('opacity', 0);
+    });
+
+    if (options.withLegend) {
+        $$.hideLegend(targetIds);
+    }
+
+    $$.redraw({ withUpdateOrgXDomain: true, withUpdateXDomain: true, withLegend: true });
+};
+
+c3_chart_fn.toggle = function (targetIds, options) {
+    var that = this,
+        $$ = this.internal;
+    $$.mapToTargetIds(targetIds).forEach(function (targetId) {
+        $$.isTargetToShow(targetId) ? that.hide(targetId, options) : that.show(targetId, options);
+    });
+};
+
+c3_chart_fn.tooltip = function () {};
+c3_chart_fn.tooltip.show = function (args) {
+    var $$ = this.internal,
+        index,
+        mouse;
+
+    // determine mouse position on the chart
+    if (args.mouse) {
+        mouse = args.mouse;
+    }
+
+    // determine focus data
+    if (args.data) {
+        if ($$.isMultipleX()) {
+            // if multiple xs, target point will be determined by mouse
+            mouse = [$$.x(args.data.x), $$.getYScale(args.data.id)(args.data.value)];
+            index = null;
+        } else {
+            // TODO: when tooltip_grouped = false
+            index = isValue(args.data.index) ? args.data.index : $$.getIndexByX(args.data.x);
+        }
+    } else if (typeof args.x !== 'undefined') {
+        index = $$.getIndexByX(args.x);
+    } else if (typeof args.index !== 'undefined') {
+        index = args.index;
+    }
+
+    // emulate mouse events to show
+    $$.dispatchEvent('mouseover', index, mouse);
+    $$.dispatchEvent('mousemove', index, mouse);
+
+    $$.config.tooltip_onshow.call($$, args.data);
+};
+c3_chart_fn.tooltip.hide = function () {
+    // TODO: get target data by checking the state of focus
+    this.internal.dispatchEvent('mouseout', 0);
+
+    this.internal.config.tooltip_onhide.call(this);
+};
+
+c3_chart_fn.transform = function (type, targetIds) {
+    var $$ = this.internal,
+        options = ['pie', 'donut'].indexOf(type) >= 0 ? { withTransform: true } : null;
+    $$.transformTo(targetIds, type, options);
+};
+
+c3_chart_internal_fn.transformTo = function (targetIds, type, optionsForRedraw) {
+    var $$ = this,
+        withTransitionForAxis = !$$.hasArcType(),
+        options = optionsForRedraw || { withTransitionForAxis: withTransitionForAxis };
+    options.withTransitionForTransform = false;
+    $$.transiting = false;
+    $$.setTargetType(targetIds, type);
+    $$.updateTargets($$.data.targets); // this is needed when transforming to arc
+    $$.updateAndRedraw(options);
+};
+
+c3_chart_fn.x = function (x) {
+    var $$ = this.internal;
+    if (arguments.length) {
+        $$.updateTargetX($$.data.targets, x);
+        $$.redraw({ withUpdateOrgXDomain: true, withUpdateXDomain: true });
+    }
+    return $$.data.xs;
+};
+c3_chart_fn.xs = function (xs) {
+    var $$ = this.internal;
+    if (arguments.length) {
+        $$.updateTargetXs($$.data.targets, xs);
+        $$.redraw({ withUpdateOrgXDomain: true, withUpdateXDomain: true });
+    }
+    return $$.data.xs;
+};
+
+c3_chart_fn.zoom = function (domain) {
+    var $$ = this.internal;
+    if (domain) {
+        if ($$.isTimeSeries()) {
+            domain = domain.map(function (x) {
+                return $$.parseDate(x);
+            });
+        }
+        $$.brush.extent(domain);
+        $$.redraw({ withUpdateXDomain: true, withY: $$.config.zoom_rescale });
+        $$.config.zoom_onzoom.call(this, $$.x.orgDomain());
+    }
+    return $$.brush.extent();
+};
+c3_chart_fn.zoom.enable = function (enabled) {
+    var $$ = this.internal;
+    $$.config.zoom_enabled = enabled;
+    $$.updateAndRedraw();
+};
+c3_chart_fn.unzoom = function () {
+    var $$ = this.internal;
+    $$.brush.clear().update();
+    $$.redraw({ withUpdateXDomain: true });
+};
+
+c3_chart_fn.zoom.max = function (max) {
+    var $$ = this.internal,
+        config = $$.config,
+        d3 = $$.d3;
+    if (max === 0 || max) {
+        config.zoom_x_max = d3.max([$$.orgXDomain[1], max]);
+    } else {
+        return config.zoom_x_max;
+    }
+};
+
+c3_chart_fn.zoom.min = function (min) {
+    var $$ = this.internal,
+        config = $$.config,
+        d3 = $$.d3;
+    if (min === 0 || min) {
+        config.zoom_x_min = d3.min([$$.orgXDomain[0], min]);
+    } else {
+        return config.zoom_x_min;
+    }
+};
+
+c3_chart_fn.zoom.range = function (range) {
+    if (arguments.length) {
+        if (isDefined(range.max)) {
+            this.domain.max(range.max);
+        }
+        if (isDefined(range.min)) {
+            this.domain.min(range.min);
+        }
+    } else {
+        return {
+            max: this.domain.max(),
+            min: this.domain.min()
+        };
+    }
+};
+
+c3_chart_internal_fn.initPie = function () {
+    var $$ = this,
+        d3 = $$.d3;
+    $$.pie = d3.layout.pie().value(function (d) {
+        return d.values.reduce(function (a, b) {
+            return a + b.value;
+        }, 0);
+    });
+    $$.pie.sort($$.getOrderFunction() || null);
+};
+
+c3_chart_internal_fn.updateRadius = function () {
+    var $$ = this,
+        config = $$.config,
+        w = config.gauge_width || config.donut_width;
+    $$.radiusExpanded = Math.min($$.arcWidth, $$.arcHeight) / 2;
+    $$.radius = $$.radiusExpanded * 0.95;
+    $$.innerRadiusRatio = w ? ($$.radius - w) / $$.radius : 0.6;
+    $$.innerRadius = $$.hasType('donut') || $$.hasType('gauge') ? $$.radius * $$.innerRadiusRatio : 0;
+};
+
+c3_chart_internal_fn.updateArc = function () {
+    var $$ = this;
+    $$.svgArc = $$.getSvgArc();
+    $$.svgArcExpanded = $$.getSvgArcExpanded();
+    $$.svgArcExpandedSub = $$.getSvgArcExpanded(0.98);
+};
+
+c3_chart_internal_fn.updateAngle = function (d) {
+    var $$ = this,
+        config = $$.config,
+        found = false,
+        index = 0,
+        gMin,
+        gMax,
+        gTic,
+        gValue;
+
+    if (!config) {
+        return null;
+    }
+
+    $$.pie($$.filterTargetsToShow($$.data.targets)).forEach(function (t) {
+        if (!found && t.data.id === d.data.id) {
+            found = true;
+            d = t;
+            d.index = index;
+        }
+        index++;
+    });
+    if (isNaN(d.startAngle)) {
+        d.startAngle = 0;
+    }
+    if (isNaN(d.endAngle)) {
+        d.endAngle = d.startAngle;
+    }
+    if ($$.isGaugeType(d.data)) {
+        gMin = config.gauge_min;
+        gMax = config.gauge_max;
+        gTic = Math.PI * (config.gauge_fullCircle ? 2 : 1) / (gMax - gMin);
+        gValue = d.value < gMin ? 0 : d.value < gMax ? d.value - gMin : gMax - gMin;
+        d.startAngle = config.gauge_startingAngle;
+        d.endAngle = d.startAngle + gTic * gValue;
+    }
+    return found ? d : null;
+};
+
+c3_chart_internal_fn.getSvgArc = function () {
+    var $$ = this,
+        arc = $$.d3.svg.arc().outerRadius($$.radius).innerRadius($$.innerRadius),
+        newArc = function newArc(d, withoutUpdate) {
+        var updated;
+        if (withoutUpdate) {
+            return arc(d);
+        } // for interpolate
+        updated = $$.updateAngle(d);
+        return updated ? arc(updated) : "M 0 0";
+    };
+    // TODO: extends all function
+    newArc.centroid = arc.centroid;
+    return newArc;
+};
+
+c3_chart_internal_fn.getSvgArcExpanded = function (rate) {
+    var $$ = this,
+        arc = $$.d3.svg.arc().outerRadius($$.radiusExpanded * (rate ? rate : 1)).innerRadius($$.innerRadius);
+    return function (d) {
+        var updated = $$.updateAngle(d);
+        return updated ? arc(updated) : "M 0 0";
+    };
+};
+
+c3_chart_internal_fn.getArc = function (d, withoutUpdate, force) {
+    return force || this.isArcType(d.data) ? this.svgArc(d, withoutUpdate) : "M 0 0";
+};
+
+c3_chart_internal_fn.transformForArcLabel = function (d) {
+    var $$ = this,
+        config = $$.config,
+        updated = $$.updateAngle(d),
+        c,
+        x,
+        y,
+        h,
+        ratio,
+        translate = "";
+    if (updated && !$$.hasType('gauge')) {
+        c = this.svgArc.centroid(updated);
+        x = isNaN(c[0]) ? 0 : c[0];
+        y = isNaN(c[1]) ? 0 : c[1];
+        h = Math.sqrt(x * x + y * y);
+        if ($$.hasType('donut') && config.donut_label_ratio) {
+            ratio = isFunction(config.donut_label_ratio) ? config.donut_label_ratio(d, $$.radius, h) : config.donut_label_ratio;
+        } else if ($$.hasType('pie') && config.pie_label_ratio) {
+            ratio = isFunction(config.pie_label_ratio) ? config.pie_label_ratio(d, $$.radius, h) : config.pie_label_ratio;
+        } else {
+            ratio = $$.radius && h ? (36 / $$.radius > 0.375 ? 1.175 - 36 / $$.radius : 0.8) * $$.radius / h : 0;
+        }
+        translate = "translate(" + x * ratio + ',' + y * ratio + ")";
+    }
+    return translate;
+};
+
+c3_chart_internal_fn.getArcRatio = function (d) {
+    var $$ = this,
+        config = $$.config,
+        whole = Math.PI * ($$.hasType('gauge') && !config.gauge_fullCircle ? 1 : 2);
+    return d ? (d.endAngle - d.startAngle) / whole : null;
+};
+
+c3_chart_internal_fn.convertToArcData = function (d) {
+    return this.addName({
+        id: d.data.id,
+        value: d.value,
+        ratio: this.getArcRatio(d),
+        index: d.index
+    });
+};
+
+c3_chart_internal_fn.textForArcLabel = function (d) {
+    var $$ = this,
+        updated,
+        value,
+        ratio,
+        id,
+        format;
+    if (!$$.shouldShowArcLabel()) {
+        return "";
+    }
+    updated = $$.updateAngle(d);
+    value = updated ? updated.value : null;
+    ratio = $$.getArcRatio(updated);
+    id = d.data.id;
+    if (!$$.hasType('gauge') && !$$.meetsArcLabelThreshold(ratio)) {
+        return "";
+    }
+    format = $$.getArcLabelFormat();
+    return format ? format(value, ratio, id) : $$.defaultArcValueFormat(value, ratio);
+};
+
+c3_chart_internal_fn.textForGaugeMinMax = function (value, isMax) {
+    var $$ = this,
+        format = $$.getGaugeLabelExtents();
+
+    return format ? format(value, isMax) : value;
+};
+
+c3_chart_internal_fn.expandArc = function (targetIds) {
+    var $$ = this,
+        interval;
+
+    // MEMO: avoid to cancel transition
+    if ($$.transiting) {
+        interval = window.setInterval(function () {
+            if (!$$.transiting) {
+                window.clearInterval(interval);
+                if ($$.legend.selectAll('.c3-legend-item-focused').size() > 0) {
+                    $$.expandArc(targetIds);
+                }
+            }
+        }, 10);
+        return;
+    }
+
+    targetIds = $$.mapToTargetIds(targetIds);
+
+    $$.svg.selectAll($$.selectorTargets(targetIds, '.' + CLASS.chartArc)).each(function (d) {
+        if (!$$.shouldExpand(d.data.id)) {
+            return;
+        }
+        $$.d3.select(this).selectAll('path').transition().duration($$.expandDuration(d.data.id)).attr("d", $$.svgArcExpanded).transition().duration($$.expandDuration(d.data.id) * 2).attr("d", $$.svgArcExpandedSub).each(function (d) {
+            if ($$.isDonutType(d.data)) {
+                // callback here
+            }
+        });
+    });
+};
+
+c3_chart_internal_fn.unexpandArc = function (targetIds) {
+    var $$ = this;
+
+    if ($$.transiting) {
+        return;
+    }
+
+    targetIds = $$.mapToTargetIds(targetIds);
+
+    $$.svg.selectAll($$.selectorTargets(targetIds, '.' + CLASS.chartArc)).selectAll('path').transition().duration(function (d) {
+        return $$.expandDuration(d.data.id);
+    }).attr("d", $$.svgArc);
+    $$.svg.selectAll('.' + CLASS.arc);
+};
+
+c3_chart_internal_fn.expandDuration = function (id) {
+    var $$ = this,
+        config = $$.config;
+
+    if ($$.isDonutType(id)) {
+        return config.donut_expand_duration;
+    } else if ($$.isGaugeType(id)) {
+        return config.gauge_expand_duration;
+    } else if ($$.isPieType(id)) {
+        return config.pie_expand_duration;
+    } else {
+        return 50;
+    }
+};
+
+c3_chart_internal_fn.shouldExpand = function (id) {
+    var $$ = this,
+        config = $$.config;
+    return $$.isDonutType(id) && config.donut_expand || $$.isGaugeType(id) && config.gauge_expand || $$.isPieType(id) && config.pie_expand;
+};
+
+c3_chart_internal_fn.shouldShowArcLabel = function () {
+    var $$ = this,
+        config = $$.config,
+        shouldShow = true;
+    if ($$.hasType('donut')) {
+        shouldShow = config.donut_label_show;
+    } else if ($$.hasType('pie')) {
+        shouldShow = config.pie_label_show;
+    }
+    // when gauge, always true
+    return shouldShow;
+};
+
+c3_chart_internal_fn.meetsArcLabelThreshold = function (ratio) {
+    var $$ = this,
+        config = $$.config,
+        threshold = $$.hasType('donut') ? config.donut_label_threshold : config.pie_label_threshold;
+    return ratio >= threshold;
+};
+
+c3_chart_internal_fn.getArcLabelFormat = function () {
+    var $$ = this,
+        config = $$.config,
+        format = config.pie_label_format;
+    if ($$.hasType('gauge')) {
+        format = config.gauge_label_format;
+    } else if ($$.hasType('donut')) {
+        format = config.donut_label_format;
+    }
+    return format;
+};
+
+c3_chart_internal_fn.getGaugeLabelExtents = function () {
+    var $$ = this,
+        config = $$.config;
+    return config.gauge_label_extents;
+};
+
+c3_chart_internal_fn.getArcTitle = function () {
+    var $$ = this;
+    return $$.hasType('donut') ? $$.config.donut_title : "";
+};
+
+c3_chart_internal_fn.updateTargetsForArc = function (targets) {
+    var $$ = this,
+        main = $$.main,
+        mainPieUpdate,
+        mainPieEnter,
+        classChartArc = $$.classChartArc.bind($$),
+        classArcs = $$.classArcs.bind($$),
+        classFocus = $$.classFocus.bind($$);
+    mainPieUpdate = main.select('.' + CLASS.chartArcs).selectAll('.' + CLASS.chartArc).data($$.pie(targets)).attr("class", function (d) {
+        return classChartArc(d) + classFocus(d.data);
+    });
+    mainPieEnter = mainPieUpdate.enter().append("g").attr("class", classChartArc);
+    mainPieEnter.append('g').attr('class', classArcs);
+    mainPieEnter.append("text").attr("dy", $$.hasType('gauge') ? "-.1em" : ".35em").style("opacity", 0).style("text-anchor", "middle").style("pointer-events", "none");
+    // MEMO: can not keep same color..., but not bad to update color in redraw
+    //mainPieUpdate.exit().remove();
+};
+
+c3_chart_internal_fn.initArc = function () {
+    var $$ = this;
+    $$.arcs = $$.main.select('.' + CLASS.chart).append("g").attr("class", CLASS.chartArcs).attr("transform", $$.getTranslate('arc'));
+    $$.arcs.append('text').attr('class', CLASS.chartArcsTitle).style("text-anchor", "middle").text($$.getArcTitle());
+};
+
+c3_chart_internal_fn.redrawArc = function (duration, durationForExit, withTransform) {
+    var $$ = this,
+        d3 = $$.d3,
+        config = $$.config,
+        main = $$.main,
+        mainArc;
+    mainArc = main.selectAll('.' + CLASS.arcs).selectAll('.' + CLASS.arc).data($$.arcData.bind($$));
+    mainArc.enter().append('path').attr("class", $$.classArc.bind($$)).style("fill", function (d) {
+        return $$.color(d.data);
+    }).style("cursor", function (d) {
+        return config.interaction_enabled && config.data_selection_isselectable(d) ? "pointer" : null;
+    }).each(function (d) {
+        if ($$.isGaugeType(d.data)) {
+            d.startAngle = d.endAngle = config.gauge_startingAngle;
+        }
+        this._current = d;
+    });
+    mainArc.attr("transform", function (d) {
+        return !$$.isGaugeType(d.data) && withTransform ? "scale(0)" : "";
+    }).on('mouseover', config.interaction_enabled ? function (d) {
+        var updated, arcData;
+        if ($$.transiting) {
+            // skip while transiting
+            return;
+        }
+        updated = $$.updateAngle(d);
+        if (updated) {
+            arcData = $$.convertToArcData(updated);
+            // transitions
+            $$.expandArc(updated.data.id);
+            $$.api.focus(updated.data.id);
+            $$.toggleFocusLegend(updated.data.id, true);
+            $$.config.data_onmouseover(arcData, this);
+        }
+    } : null).on('mousemove', config.interaction_enabled ? function (d) {
+        var updated = $$.updateAngle(d),
+            arcData,
+            selectedData;
+        if (updated) {
+            arcData = $$.convertToArcData(updated), selectedData = [arcData];
+            $$.showTooltip(selectedData, this);
+        }
+    } : null).on('mouseout', config.interaction_enabled ? function (d) {
+        var updated, arcData;
+        if ($$.transiting) {
+            // skip while transiting
+            return;
+        }
+        updated = $$.updateAngle(d);
+        if (updated) {
+            arcData = $$.convertToArcData(updated);
+            // transitions
+            $$.unexpandArc(updated.data.id);
+            $$.api.revert();
+            $$.revertLegend();
+            $$.hideTooltip();
+            $$.config.data_onmouseout(arcData, this);
+        }
+    } : null).on('click', config.interaction_enabled ? function (d, i) {
+        var updated = $$.updateAngle(d),
+            arcData;
+        if (updated) {
+            arcData = $$.convertToArcData(updated);
+            if ($$.toggleShape) {
+                $$.toggleShape(this, arcData, i);
+            }
+            $$.config.data_onclick.call($$.api, arcData, this);
+        }
+    } : null).each(function () {
+        $$.transiting = true;
+    }).transition().duration(duration).attrTween("d", function (d) {
+        var updated = $$.updateAngle(d),
+            interpolate;
+        if (!updated) {
+            return function () {
+                return "M 0 0";
+            };
+        }
+        //                if (this._current === d) {
+        //                    this._current = {
+        //                        startAngle: Math.PI*2,
+        //                        endAngle: Math.PI*2,
+        //                    };
+        //                }
+        if (isNaN(this._current.startAngle)) {
+            this._current.startAngle = 0;
+        }
+        if (isNaN(this._current.endAngle)) {
+            this._current.endAngle = this._current.startAngle;
+        }
+        interpolate = d3.interpolate(this._current, updated);
+        this._current = interpolate(0);
+        return function (t) {
+            var interpolated = interpolate(t);
+            interpolated.data = d.data; // data.id will be updated by interporator
+            return $$.getArc(interpolated, true);
+        };
+    }).attr("transform", withTransform ? "scale(1)" : "").style("fill", function (d) {
+        return $$.levelColor ? $$.levelColor(d.data.values[0].value) : $$.color(d.data.id);
+    } // Where gauge reading color would receive customization.
+    ).call($$.endall, function () {
+        $$.transiting = false;
+    });
+    mainArc.exit().transition().duration(durationForExit).style('opacity', 0).remove();
+    main.selectAll('.' + CLASS.chartArc).select('text').style("opacity", 0).attr('class', function (d) {
+        return $$.isGaugeType(d.data) ? CLASS.gaugeValue : '';
+    }).text($$.textForArcLabel.bind($$)).attr("transform", $$.transformForArcLabel.bind($$)).style('font-size', function (d) {
+        return $$.isGaugeType(d.data) ? Math.round($$.radius / 5) + 'px' : '';
+    }).transition().duration(duration).style("opacity", function (d) {
+        return $$.isTargetToShow(d.data.id) && $$.isArcType(d.data) ? 1 : 0;
+    });
+    main.select('.' + CLASS.chartArcsTitle).style("opacity", $$.hasType('donut') || $$.hasType('gauge') ? 1 : 0);
+
+    if ($$.hasType('gauge')) {
+        $$.arcs.select('.' + CLASS.chartArcsBackground).attr("d", function () {
+            var d = {
+                data: [{ value: config.gauge_max }],
+                startAngle: config.gauge_startingAngle,
+                endAngle: -1 * config.gauge_startingAngle
+            };
+            return $$.getArc(d, true, true);
+        });
+        $$.arcs.select('.' + CLASS.chartArcsGaugeUnit).attr("dy", ".75em").text(config.gauge_label_show ? config.gauge_units : '');
+        $$.arcs.select('.' + CLASS.chartArcsGaugeMin).attr("dx", -1 * ($$.innerRadius + ($$.radius - $$.innerRadius) / (config.gauge_fullCircle ? 1 : 2)) + "px").attr("dy", "1.2em").text(config.gauge_label_show ? $$.textForGaugeMinMax(config.gauge_min, false) : '');
+        $$.arcs.select('.' + CLASS.chartArcsGaugeMax).attr("dx", $$.innerRadius + ($$.radius - $$.innerRadius) / (config.gauge_fullCircle ? 1 : 2) + "px").attr("dy", "1.2em").text(config.gauge_label_show ? $$.textForGaugeMinMax(config.gauge_max, true) : '');
+    }
+};
+c3_chart_internal_fn.initGauge = function () {
+    var arcs = this.arcs;
+    if (this.hasType('gauge')) {
+        arcs.append('path').attr("class", CLASS.chartArcsBackground);
+        arcs.append("text").attr("class", CLASS.chartArcsGaugeUnit).style("text-anchor", "middle").style("pointer-events", "none");
+        arcs.append("text").attr("class", CLASS.chartArcsGaugeMin).style("text-anchor", "middle").style("pointer-events", "none");
+        arcs.append("text").attr("class", CLASS.chartArcsGaugeMax).style("text-anchor", "middle").style("pointer-events", "none");
+    }
+};
+c3_chart_internal_fn.getGaugeLabelHeight = function () {
+    return this.config.gauge_label_show ? 20 : 0;
+};
+
+c3_chart_internal_fn.hasCaches = function (ids) {
+    for (var i = 0; i < ids.length; i++) {
+        if (!(ids[i] in this.cache)) {
+            return false;
+        }
+    }
+    return true;
+};
+c3_chart_internal_fn.addCache = function (id, target) {
+    this.cache[id] = this.cloneTarget(target);
+};
+c3_chart_internal_fn.getCaches = function (ids) {
+    var targets = [],
+        i;
+    for (i = 0; i < ids.length; i++) {
+        if (ids[i] in this.cache) {
+            targets.push(this.cloneTarget(this.cache[ids[i]]));
+        }
+    }
+    return targets;
+};
+
+c3_chart_internal_fn.categoryName = function (i) {
+    var config = this.config;
+    return i < config.axis_x_categories.length ? config.axis_x_categories[i] : i;
+};
+
+c3_chart_internal_fn.generateClass = function (prefix, targetId) {
+    return " " + prefix + " " + prefix + this.getTargetSelectorSuffix(targetId);
+};
+c3_chart_internal_fn.classText = function (d) {
+    return this.generateClass(CLASS.text, d.index);
+};
+c3_chart_internal_fn.classTexts = function (d) {
+    return this.generateClass(CLASS.texts, d.id);
+};
+c3_chart_internal_fn.classShape = function (d) {
+    return this.generateClass(CLASS.shape, d.index);
+};
+c3_chart_internal_fn.classShapes = function (d) {
+    return this.generateClass(CLASS.shapes, d.id);
+};
+c3_chart_internal_fn.classLine = function (d) {
+    return this.classShape(d) + this.generateClass(CLASS.line, d.id);
+};
+c3_chart_internal_fn.classLines = function (d) {
+    return this.classShapes(d) + this.generateClass(CLASS.lines, d.id);
+};
+c3_chart_internal_fn.classCircle = function (d) {
+    return this.classShape(d) + this.generateClass(CLASS.circle, d.index);
+};
+c3_chart_internal_fn.classCircles = function (d) {
+    return this.classShapes(d) + this.generateClass(CLASS.circles, d.id);
+};
+c3_chart_internal_fn.classBar = function (d) {
+    return this.classShape(d) + this.generateClass(CLASS.bar, d.index);
+};
+c3_chart_internal_fn.classBars = function (d) {
+    return this.classShapes(d) + this.generateClass(CLASS.bars, d.id);
+};
+c3_chart_internal_fn.classArc = function (d) {
+    return this.classShape(d.data) + this.generateClass(CLASS.arc, d.data.id);
+};
+c3_chart_internal_fn.classArcs = function (d) {
+    return this.classShapes(d.data) + this.generateClass(CLASS.arcs, d.data.id);
+};
+c3_chart_internal_fn.classArea = function (d) {
+    return this.classShape(d) + this.generateClass(CLASS.area, d.id);
+};
+c3_chart_internal_fn.classAreas = function (d) {
+    return this.classShapes(d) + this.generateClass(CLASS.areas, d.id);
+};
+c3_chart_internal_fn.classRegion = function (d, i) {
+    return this.generateClass(CLASS.region, i) + ' ' + ('class' in d ? d['class'] : '');
+};
+c3_chart_internal_fn.classEvent = function (d) {
+    return this.generateClass(CLASS.eventRect, d.index);
+};
+c3_chart_internal_fn.classTarget = function (id) {
+    var $$ = this;
+    var additionalClassSuffix = $$.config.data_classes[id],
+        additionalClass = '';
+    if (additionalClassSuffix) {
+        additionalClass = ' ' + CLASS.target + '-' + additionalClassSuffix;
+    }
+    return $$.generateClass(CLASS.target, id) + additionalClass;
+};
+c3_chart_internal_fn.classFocus = function (d) {
+    return this.classFocused(d) + this.classDefocused(d);
+};
+c3_chart_internal_fn.classFocused = function (d) {
+    return ' ' + (this.focusedTargetIds.indexOf(d.id) >= 0 ? CLASS.focused : '');
+};
+c3_chart_internal_fn.classDefocused = function (d) {
+    return ' ' + (this.defocusedTargetIds.indexOf(d.id) >= 0 ? CLASS.defocused : '');
+};
+c3_chart_internal_fn.classChartText = function (d) {
+    return CLASS.chartText + this.classTarget(d.id);
+};
+c3_chart_internal_fn.classChartLine = function (d) {
+    return CLASS.chartLine + this.classTarget(d.id);
+};
+c3_chart_internal_fn.classChartBar = function (d) {
+    return CLASS.chartBar + this.classTarget(d.id);
+};
+c3_chart_internal_fn.classChartArc = function (d) {
+    return CLASS.chartArc + this.classTarget(d.data.id);
+};
+c3_chart_internal_fn.getTargetSelectorSuffix = function (targetId) {
+    return targetId || targetId === 0 ? ('-' + targetId).replace(/[\s?!@#$%^&*()_=+,.<>'":;\[\]\/|~`{}\\]/g, '-') : '';
+};
+c3_chart_internal_fn.selectorTarget = function (id, prefix) {
+    return (prefix || '') + '.' + CLASS.target + this.getTargetSelectorSuffix(id);
+};
+c3_chart_internal_fn.selectorTargets = function (ids, prefix) {
+    var $$ = this;
+    ids = ids || [];
+    return ids.length ? ids.map(function (id) {
+        return $$.selectorTarget(id, prefix);
+    }) : null;
+};
+c3_chart_internal_fn.selectorLegend = function (id) {
+    return '.' + CLASS.legendItem + this.getTargetSelectorSuffix(id);
+};
+c3_chart_internal_fn.selectorLegends = function (ids) {
+    var $$ = this;
+    return ids && ids.length ? ids.map(function (id) {
+        return $$.selectorLegend(id);
+    }) : null;
+};
+
+c3_chart_internal_fn.getClipPath = function (id) {
+    var isIE9 = window.navigator.appVersion.toLowerCase().indexOf("msie 9.") >= 0;
+    return "url(" + (isIE9 ? "" : document.URL.split('#')[0]) + "#" + id + ")";
+};
+c3_chart_internal_fn.appendClip = function (parent, id) {
+    return parent.append("clipPath").attr("id", id).append("rect");
+};
+c3_chart_internal_fn.getAxisClipX = function (forHorizontal) {
+    // axis line width + padding for left
+    var left = Math.max(30, this.margin.left);
+    return forHorizontal ? -(1 + left) : -(left - 1);
+};
+c3_chart_internal_fn.getAxisClipY = function (forHorizontal) {
+    return forHorizontal ? -20 : -this.margin.top;
+};
+c3_chart_internal_fn.getXAxisClipX = function () {
+    var $$ = this;
+    return $$.getAxisClipX(!$$.config.axis_rotated);
+};
+c3_chart_internal_fn.getXAxisClipY = function () {
+    var $$ = this;
+    return $$.getAxisClipY(!$$.config.axis_rotated);
+};
+c3_chart_internal_fn.getYAxisClipX = function () {
+    var $$ = this;
+    return $$.config.axis_y_inner ? -1 : $$.getAxisClipX($$.config.axis_rotated);
+};
+c3_chart_internal_fn.getYAxisClipY = function () {
+    var $$ = this;
+    return $$.getAxisClipY($$.config.axis_rotated);
+};
+c3_chart_internal_fn.getAxisClipWidth = function (forHorizontal) {
+    var $$ = this,
+        left = Math.max(30, $$.margin.left),
+        right = Math.max(30, $$.margin.right);
+    // width + axis line width + padding for left/right
+    return forHorizontal ? $$.width + 2 + left + right : $$.margin.left + 20;
+};
+c3_chart_internal_fn.getAxisClipHeight = function (forHorizontal) {
+    // less than 20 is not enough to show the axis label 'outer' without legend
+    return (forHorizontal ? this.margin.bottom : this.margin.top + this.height) + 20;
+};
+c3_chart_internal_fn.getXAxisClipWidth = function () {
+    var $$ = this;
+    return $$.getAxisClipWidth(!$$.config.axis_rotated);
+};
+c3_chart_internal_fn.getXAxisClipHeight = function () {
+    var $$ = this;
+    return $$.getAxisClipHeight(!$$.config.axis_rotated);
+};
+c3_chart_internal_fn.getYAxisClipWidth = function () {
+    var $$ = this;
+    return $$.getAxisClipWidth($$.config.axis_rotated) + ($$.config.axis_y_inner ? 20 : 0);
+};
+c3_chart_internal_fn.getYAxisClipHeight = function () {
+    var $$ = this;
+    return $$.getAxisClipHeight($$.config.axis_rotated);
+};
+
+c3_chart_internal_fn.generateColor = function () {
+    var $$ = this,
+        config = $$.config,
+        d3 = $$.d3,
+        colors = config.data_colors,
+        pattern = notEmpty(config.color_pattern) ? config.color_pattern : d3.scale.category10().range(),
+        callback = config.data_color,
+        ids = [];
+
+    return function (d) {
+        var id = d.id || d.data && d.data.id || d,
+            color;
+
+        // if callback function is provided
+        if (colors[id] instanceof Function) {
+            color = colors[id](d);
+        }
+        // if specified, choose that color
+        else if (colors[id]) {
+                color = colors[id];
+            }
+            // if not specified, choose from pattern
+            else {
+                    if (ids.indexOf(id) < 0) {
+                        ids.push(id);
+                    }
+                    color = pattern[ids.indexOf(id) % pattern.length];
+                    colors[id] = color;
+                }
+        return callback instanceof Function ? callback(color, d) : color;
+    };
+};
+c3_chart_internal_fn.generateLevelColor = function () {
+    var $$ = this,
+        config = $$.config,
+        colors = config.color_pattern,
+        threshold = config.color_threshold,
+        asValue = threshold.unit === 'value',
+        values = threshold.values && threshold.values.length ? threshold.values : [],
+        max = threshold.max || 100;
+    return notEmpty(config.color_threshold) ? function (value) {
+        var i,
+            v,
+            color = colors[colors.length - 1];
+        for (i = 0; i < values.length; i++) {
+            v = asValue ? value : value * 100 / max;
+            if (v < values[i]) {
+                color = colors[i];
+                break;
+            }
+        }
+        return color;
+    } : null;
+};
+
+c3_chart_internal_fn.getDefaultConfig = function () {
+    var config = {
+        bindto: '#chart',
+        svg_classname: undefined,
+        size_width: undefined,
+        size_height: undefined,
+        padding_left: undefined,
+        padding_right: undefined,
+        padding_top: undefined,
+        padding_bottom: undefined,
+        resize_auto: true,
+        zoom_enabled: false,
+        zoom_extent: undefined,
+        zoom_privileged: false,
+        zoom_rescale: false,
+        zoom_onzoom: function zoom_onzoom() {},
+        zoom_onzoomstart: function zoom_onzoomstart() {},
+        zoom_onzoomend: function zoom_onzoomend() {},
+        zoom_x_min: undefined,
+        zoom_x_max: undefined,
+        interaction_brighten: true,
+        interaction_enabled: true,
+        onmouseover: function onmouseover() {},
+        onmouseout: function onmouseout() {},
+        onresize: function onresize() {},
+        onresized: function onresized() {},
+        oninit: function oninit() {},
+        onrendered: function onrendered() {},
+        transition_duration: 350,
+        data_x: undefined,
+        data_xs: {},
+        data_xFormat: '%Y-%m-%d',
+        data_xLocaltime: true,
+        data_xSort: true,
+        data_idConverter: function data_idConverter(id) {
+            return id;
+        },
+        data_names: {},
+        data_classes: {},
+        data_groups: [],
+        data_axes: {},
+        data_type: undefined,
+        data_types: {},
+        data_labels: {},
+        data_order: 'desc',
+        data_regions: {},
+        data_color: undefined,
+        data_colors: {},
+        data_hide: false,
+        data_filter: undefined,
+        data_selection_enabled: false,
+        data_selection_grouped: false,
+        data_selection_isselectable: function data_selection_isselectable() {
+            return true;
+        },
+        data_selection_multiple: true,
+        data_selection_draggable: false,
+        data_onclick: function data_onclick() {},
+        data_onmouseover: function data_onmouseover() {},
+        data_onmouseout: function data_onmouseout() {},
+        data_onselected: function data_onselected() {},
+        data_onunselected: function data_onunselected() {},
+        data_url: undefined,
+        data_headers: undefined,
+        data_json: undefined,
+        data_rows: undefined,
+        data_columns: undefined,
+        data_mimeType: undefined,
+        data_keys: undefined,
+        // configuration for no plot-able data supplied.
+        data_empty_label_text: "",
+        // subchart
+        subchart_show: false,
+        subchart_size_height: 60,
+        subchart_axis_x_show: true,
+        subchart_onbrush: function subchart_onbrush() {},
+        // color
+        color_pattern: [],
+        color_threshold: {},
+        // legend
+        legend_show: true,
+        legend_hide: false,
+        legend_position: 'bottom',
+        legend_inset_anchor: 'top-left',
+        legend_inset_x: 10,
+        legend_inset_y: 0,
+        legend_inset_step: undefined,
+        legend_item_onclick: undefined,
+        legend_item_onmouseover: undefined,
+        legend_item_onmouseout: undefined,
+        legend_equally: false,
+        legend_padding: 0,
+        legend_item_tile_width: 10,
+        legend_item_tile_height: 10,
+        // axis
+        axis_rotated: false,
+        axis_x_show: true,
+        axis_x_type: 'indexed',
+        axis_x_localtime: true,
+        axis_x_categories: [],
+        axis_x_tick_centered: false,
+        axis_x_tick_format: undefined,
+        axis_x_tick_culling: {},
+        axis_x_tick_culling_max: 10,
+        axis_x_tick_count: undefined,
+        axis_x_tick_fit: true,
+        axis_x_tick_values: null,
+        axis_x_tick_rotate: 0,
+        axis_x_tick_outer: true,
+        axis_x_tick_multiline: true,
+        axis_x_tick_width: null,
+        axis_x_max: undefined,
+        axis_x_min: undefined,
+        axis_x_padding: {},
+        axis_x_height: undefined,
+        axis_x_extent: undefined,
+        axis_x_label: {},
+        axis_y_show: true,
+        axis_y_type: undefined,
+        axis_y_max: undefined,
+        axis_y_min: undefined,
+        axis_y_inverted: false,
+        axis_y_center: undefined,
+        axis_y_inner: undefined,
+        axis_y_label: {},
+        axis_y_tick_format: undefined,
+        axis_y_tick_outer: true,
+        axis_y_tick_values: null,
+        axis_y_tick_rotate: 0,
+        axis_y_tick_count: undefined,
+        axis_y_tick_time_value: undefined,
+        axis_y_tick_time_interval: undefined,
+        axis_y_padding: {},
+        axis_y_default: undefined,
+        axis_y2_show: false,
+        axis_y2_max: undefined,
+        axis_y2_min: undefined,
+        axis_y2_inverted: false,
+        axis_y2_center: undefined,
+        axis_y2_inner: undefined,
+        axis_y2_label: {},
+        axis_y2_tick_format: undefined,
+        axis_y2_tick_outer: true,
+        axis_y2_tick_values: null,
+        axis_y2_tick_count: undefined,
+        axis_y2_padding: {},
+        axis_y2_default: undefined,
+        // grid
+        grid_x_show: false,
+        grid_x_type: 'tick',
+        grid_x_lines: [],
+        grid_y_show: false,
+        // not used
+        // grid_y_type: 'tick',
+        grid_y_lines: [],
+        grid_y_ticks: 10,
+        grid_focus_show: true,
+        grid_lines_front: true,
+        // point - point of each data
+        point_show: true,
+        point_r: 2.5,
+        point_sensitivity: 10,
+        point_focus_expand_enabled: true,
+        point_focus_expand_r: undefined,
+        point_select_r: undefined,
+        // line
+        line_connectNull: false,
+        line_step_type: 'step',
+        // bar
+        bar_width: undefined,
+        bar_width_ratio: 0.6,
+        bar_width_max: undefined,
+        bar_zerobased: true,
+        bar_space: 0,
+        // area
+        area_zerobased: true,
+        area_above: false,
+        // pie
+        pie_label_show: true,
+        pie_label_format: undefined,
+        pie_label_threshold: 0.05,
+        pie_label_ratio: undefined,
+        pie_expand: {},
+        pie_expand_duration: 50,
+        // gauge
+        gauge_fullCircle: false,
+        gauge_label_show: true,
+        gauge_label_format: undefined,
+        gauge_min: 0,
+        gauge_max: 100,
+        gauge_startingAngle: -1 * Math.PI / 2,
+        gauge_label_extents: undefined,
+        gauge_units: undefined,
+        gauge_width: undefined,
+        gauge_expand: {},
+        gauge_expand_duration: 50,
+        // donut
+        donut_label_show: true,
+        donut_label_format: undefined,
+        donut_label_threshold: 0.05,
+        donut_label_ratio: undefined,
+        donut_width: undefined,
+        donut_title: "",
+        donut_expand: {},
+        donut_expand_duration: 50,
+        // spline
+        spline_interpolation_type: 'cardinal',
+        // region - region to change style
+        regions: [],
+        // tooltip - show when mouseover on each data
+        tooltip_show: true,
+        tooltip_grouped: true,
+        tooltip_order: undefined,
+        tooltip_format_title: undefined,
+        tooltip_format_name: undefined,
+        tooltip_format_value: undefined,
+        tooltip_position: undefined,
+        tooltip_contents: function tooltip_contents(d, defaultTitleFormat, defaultValueFormat, color) {
+            return this.getTooltipContent ? this.getTooltipContent(d, defaultTitleFormat, defaultValueFormat, color) : '';
+        },
+        tooltip_init_show: false,
+        tooltip_init_x: 0,
+        tooltip_init_position: { top: '0px', left: '50px' },
+        tooltip_onshow: function tooltip_onshow() {},
+        tooltip_onhide: function tooltip_onhide() {},
+        // title
+        title_text: undefined,
+        title_padding: {
+            top: 0,
+            right: 0,
+            bottom: 0,
+            left: 0
+        },
+        title_position: 'top-center'
+    };
+
+    Object.keys(this.additionalConfig).forEach(function (key) {
+        config[key] = this.additionalConfig[key];
+    }, this);
+
+    return config;
+};
+c3_chart_internal_fn.additionalConfig = {};
+
+c3_chart_internal_fn.loadConfig = function (config) {
+    var this_config = this.config,
+        target,
+        keys,
+        read;
+    function find() {
+        var key = keys.shift();
+        //        console.log("key =>", key, ", target =>", target);
+        if (key && target && (typeof target === 'undefined' ? 'undefined' : _typeof(target)) === 'object' && key in target) {
+            target = target[key];
+            return find();
+        } else if (!key) {
+            return target;
+        } else {
+            return undefined;
+        }
+    }
+    Object.keys(this_config).forEach(function (key) {
+        target = config;
+        keys = key.split('_');
+        read = find();
+        //        console.log("CONFIG : ", key, read);
+        if (isDefined(read)) {
+            this_config[key] = read;
+        }
+    });
+};
+
+c3_chart_internal_fn.convertUrlToData = function (url, mimeType, headers, keys, done) {
+    var $$ = this,
+        type = mimeType ? mimeType : 'csv';
+    var req = $$.d3.xhr(url);
+    if (headers) {
+        Object.keys(headers).forEach(function (header) {
+            req.header(header, headers[header]);
+        });
+    }
+    req.get(function (error, data) {
+        var d;
+        var dataResponse = data.response || data.responseText; // Fixes IE9 XHR issue; see #1345
+        if (!data) {
+            throw new Error(error.responseURL + ' ' + error.status + ' (' + error.statusText + ')');
+        }
+        if (type === 'json') {
+            d = $$.convertJsonToData(JSON.parse(dataResponse), keys);
+        } else if (type === 'tsv') {
+            d = $$.convertTsvToData(dataResponse);
+        } else {
+            d = $$.convertCsvToData(dataResponse);
+        }
+        done.call($$, d);
+    });
+};
+c3_chart_internal_fn.convertXsvToData = function (xsv, parser) {
+    var rows = parser.parseRows(xsv),
+        d;
+    if (rows.length === 1) {
+        d = [{}];
+        rows[0].forEach(function (id) {
+            d[0][id] = null;
+        });
+    } else {
+        d = parser.parse(xsv);
+    }
+    return d;
+};
+c3_chart_internal_fn.convertCsvToData = function (csv) {
+    return this.convertXsvToData(csv, this.d3.csv);
+};
+c3_chart_internal_fn.convertTsvToData = function (tsv) {
+    return this.convertXsvToData(tsv, this.d3.tsv);
+};
+c3_chart_internal_fn.convertJsonToData = function (json, keys) {
+    var $$ = this,
+        new_rows = [],
+        targetKeys,
+        data;
+    if (keys) {
+        // when keys specified, json would be an array that includes objects
+        if (keys.x) {
+            targetKeys = keys.value.concat(keys.x);
+            $$.config.data_x = keys.x;
+        } else {
+            targetKeys = keys.value;
+        }
+        new_rows.push(targetKeys);
+        json.forEach(function (o) {
+            var new_row = [];
+            targetKeys.forEach(function (key) {
+                // convert undefined to null because undefined data will be removed in convertDataToTargets()
+                var v = $$.findValueInJson(o, key);
+                if (isUndefined(v)) {
+                    v = null;
+                }
+                new_row.push(v);
+            });
+            new_rows.push(new_row);
+        });
+        data = $$.convertRowsToData(new_rows);
+    } else {
+        Object.keys(json).forEach(function (key) {
+            new_rows.push([key].concat(json[key]));
+        });
+        data = $$.convertColumnsToData(new_rows);
+    }
+    return data;
+};
+c3_chart_internal_fn.findValueInJson = function (object, path) {
+    path = path.replace(/\[(\w+)\]/g, '.$1'); // convert indexes to properties (replace [] with .)
+    path = path.replace(/^\./, ''); // strip a leading dot
+    var pathArray = path.split('.');
+    for (var i = 0; i < pathArray.length; ++i) {
+        var k = pathArray[i];
+        if (k in object) {
+            object = object[k];
+        } else {
+            return;
+        }
+    }
+    return object;
+};
+
+/**
+ * Converts the rows to normalized data.
+ * @param {any[][]} rows The row data
+ * @return {Object[]}
+ */
+c3_chart_internal_fn.convertRowsToData = function (rows) {
+    var newRows = [];
+    var keys = rows[0];
+
+    for (var i = 1; i < rows.length; i++) {
+        var newRow = {};
+        for (var j = 0; j < rows[i].length; j++) {
+            if (isUndefined(rows[i][j])) {
+                throw new Error("Source data is missing a component at (" + i + "," + j + ")!");
+            }
+            newRow[keys[j]] = rows[i][j];
+        }
+        newRows.push(newRow);
+    }
+    return newRows;
+};
+
+/**
+ * Converts the columns to normalized data.
+ * @param {any[][]} columns The column data
+ * @return {Object[]}
+ */
+c3_chart_internal_fn.convertColumnsToData = function (columns) {
+    var newRows = [];
+
+    for (var i = 0; i < columns.length; i++) {
+        var key = columns[i][0];
+        for (var j = 1; j < columns[i].length; j++) {
+            if (isUndefined(newRows[j - 1])) {
+                newRows[j - 1] = {};
+            }
+            if (isUndefined(columns[i][j])) {
+                throw new Error("Source data is missing a component at (" + i + "," + j + ")!");
+            }
+            newRows[j - 1][key] = columns[i][j];
+        }
+    }
+
+    return newRows;
+};
+
+c3_chart_internal_fn.convertDataToTargets = function (data, appendXs) {
+    var $$ = this,
+        config = $$.config,
+        ids = $$.d3.keys(data[0]).filter($$.isNotX, $$),
+        xs = $$.d3.keys(data[0]).filter($$.isX, $$),
+        targets;
+
+    // save x for update data by load when custom x and c3.x API
+    ids.forEach(function (id) {
+        var xKey = $$.getXKey(id);
+
+        if ($$.isCustomX() || $$.isTimeSeries()) {
+            // if included in input data
+            if (xs.indexOf(xKey) >= 0) {
+                $$.data.xs[id] = (appendXs && $$.data.xs[id] ? $$.data.xs[id] : []).concat(data.map(function (d) {
+                    return d[xKey];
+                }).filter(isValue).map(function (rawX, i) {
+                    return $$.generateTargetX(rawX, id, i);
+                }));
+            }
+            // if not included in input data, find from preloaded data of other id's x
+            else if (config.data_x) {
+                    $$.data.xs[id] = $$.getOtherTargetXs();
+                }
+                // if not included in input data, find from preloaded data
+                else if (notEmpty(config.data_xs)) {
+                        $$.data.xs[id] = $$.getXValuesOfXKey(xKey, $$.data.targets);
+                    }
+            // MEMO: if no x included, use same x of current will be used
+        } else {
+            $$.data.xs[id] = data.map(function (d, i) {
+                return i;
+            });
+        }
+    });
+
+    // check x is defined
+    ids.forEach(function (id) {
+        if (!$$.data.xs[id]) {
+            throw new Error('x is not defined for id = "' + id + '".');
+        }
+    });
+
+    // convert to target
+    targets = ids.map(function (id, index) {
+        var convertedId = config.data_idConverter(id);
+        return {
+            id: convertedId,
+            id_org: id,
+            values: data.map(function (d, i) {
+                var xKey = $$.getXKey(id),
+                    rawX = d[xKey],
+                    value = d[id] !== null && !isNaN(d[id]) ? +d[id] : null,
+                    x;
+                // use x as categories if custom x and categorized
+                if ($$.isCustomX() && $$.isCategorized() && !isUndefined(rawX)) {
+                    if (index === 0 && i === 0) {
+                        config.axis_x_categories = [];
+                    }
+                    x = config.axis_x_categories.indexOf(rawX);
+                    if (x === -1) {
+                        x = config.axis_x_categories.length;
+                        config.axis_x_categories.push(rawX);
+                    }
+                } else {
+                    x = $$.generateTargetX(rawX, id, i);
+                }
+                // mark as x = undefined if value is undefined and filter to remove after mapped
+                if (isUndefined(d[id]) || $$.data.xs[id].length <= i) {
+                    x = undefined;
+                }
+                return { x: x, value: value, id: convertedId };
+            }).filter(function (v) {
+                return isDefined(v.x);
+            })
+        };
+    });
+
+    // finish targets
+    targets.forEach(function (t) {
+        var i;
+        // sort values by its x
+        if (config.data_xSort) {
+            t.values = t.values.sort(function (v1, v2) {
+                var x1 = v1.x || v1.x === 0 ? v1.x : Infinity,
+                    x2 = v2.x || v2.x === 0 ? v2.x : Infinity;
+                return x1 - x2;
+            });
+        }
+        // indexing each value
+        i = 0;
+        t.values.forEach(function (v) {
+            v.index = i++;
+        });
+        // this needs to be sorted because its index and value.index is identical
+        $$.data.xs[t.id].sort(function (v1, v2) {
+            return v1 - v2;
+        });
+    });
+
+    // cache information about values
+    $$.hasNegativeValue = $$.hasNegativeValueInTargets(targets);
+    $$.hasPositiveValue = $$.hasPositiveValueInTargets(targets);
+
+    // set target types
+    if (config.data_type) {
+        $$.setTargetType($$.mapToIds(targets).filter(function (id) {
+            return !(id in config.data_types);
+        }), config.data_type);
+    }
+
+    // cache as original id keyed
+    targets.forEach(function (d) {
+        $$.addCache(d.id_org, d);
+    });
+
+    return targets;
+};
+
+c3_chart_internal_fn.isX = function (key) {
+    var $$ = this,
+        config = $$.config;
+    return config.data_x && key === config.data_x || notEmpty(config.data_xs) && hasValue(config.data_xs, key);
+};
+c3_chart_internal_fn.isNotX = function (key) {
+    return !this.isX(key);
+};
+c3_chart_internal_fn.getXKey = function (id) {
+    var $$ = this,
+        config = $$.config;
+    return config.data_x ? config.data_x : notEmpty(config.data_xs) ? config.data_xs[id] : null;
+};
+c3_chart_internal_fn.getXValuesOfXKey = function (key, targets) {
+    var $$ = this,
+        xValues,
+        ids = targets && notEmpty(targets) ? $$.mapToIds(targets) : [];
+    ids.forEach(function (id) {
+        if ($$.getXKey(id) === key) {
+            xValues = $$.data.xs[id];
+        }
+    });
+    return xValues;
+};
+c3_chart_internal_fn.getIndexByX = function (x) {
+    var $$ = this,
+        data = $$.filterByX($$.data.targets, x);
+    return data.length ? data[0].index : null;
+};
+c3_chart_internal_fn.getXValue = function (id, i) {
+    var $$ = this;
+    return id in $$.data.xs && $$.data.xs[id] && isValue($$.data.xs[id][i]) ? $$.data.xs[id][i] : i;
+};
+c3_chart_internal_fn.getOtherTargetXs = function () {
+    var $$ = this,
+        idsForX = Object.keys($$.data.xs);
+    return idsForX.length ? $$.data.xs[idsForX[0]] : null;
+};
+c3_chart_internal_fn.getOtherTargetX = function (index) {
+    var xs = this.getOtherTargetXs();
+    return xs && index < xs.length ? xs[index] : null;
+};
+c3_chart_internal_fn.addXs = function (xs) {
+    var $$ = this;
+    Object.keys(xs).forEach(function (id) {
+        $$.config.data_xs[id] = xs[id];
+    });
+};
+c3_chart_internal_fn.hasMultipleX = function (xs) {
+    return this.d3.set(Object.keys(xs).map(function (id) {
+        return xs[id];
+    })).size() > 1;
+};
+c3_chart_internal_fn.isMultipleX = function () {
+    return notEmpty(this.config.data_xs) || !this.config.data_xSort || this.hasType('scatter');
+};
+c3_chart_internal_fn.addName = function (data) {
+    var $$ = this,
+        name;
+    if (data) {
+        name = $$.config.data_names[data.id];
+        data.name = name !== undefined ? name : data.id;
+    }
+    return data;
+};
+c3_chart_internal_fn.getValueOnIndex = function (values, index) {
+    var valueOnIndex = values.filter(function (v) {
+        return v.index === index;
+    });
+    return valueOnIndex.length ? valueOnIndex[0] : null;
+};
+c3_chart_internal_fn.updateTargetX = function (targets, x) {
+    var $$ = this;
+    targets.forEach(function (t) {
+        t.values.forEach(function (v, i) {
+            v.x = $$.generateTargetX(x[i], t.id, i);
+        });
+        $$.data.xs[t.id] = x;
+    });
+};
+c3_chart_internal_fn.updateTargetXs = function (targets, xs) {
+    var $$ = this;
+    targets.forEach(function (t) {
+        if (xs[t.id]) {
+            $$.updateTargetX([t], xs[t.id]);
+        }
+    });
+};
+c3_chart_internal_fn.generateTargetX = function (rawX, id, index) {
+    var $$ = this,
+        x;
+    if ($$.isTimeSeries()) {
+        x = rawX ? $$.parseDate(rawX) : $$.parseDate($$.getXValue(id, index));
+    } else if ($$.isCustomX() && !$$.isCategorized()) {
+        x = isValue(rawX) ? +rawX : $$.getXValue(id, index);
+    } else {
+        x = index;
+    }
+    return x;
+};
+c3_chart_internal_fn.cloneTarget = function (target) {
+    return {
+        id: target.id,
+        id_org: target.id_org,
+        values: target.values.map(function (d) {
+            return { x: d.x, value: d.value, id: d.id };
+        })
+    };
+};
+c3_chart_internal_fn.updateXs = function () {
+    var $$ = this;
+    if ($$.data.targets.length) {
+        $$.xs = [];
+        $$.data.targets[0].values.forEach(function (v) {
+            $$.xs[v.index] = v.x;
+        });
+    }
+};
+c3_chart_internal_fn.getPrevX = function (i) {
+    var x = this.xs[i - 1];
+    return typeof x !== 'undefined' ? x : null;
+};
+c3_chart_internal_fn.getNextX = function (i) {
+    var x = this.xs[i + 1];
+    return typeof x !== 'undefined' ? x : null;
+};
+c3_chart_internal_fn.getMaxDataCount = function () {
+    var $$ = this;
+    return $$.d3.max($$.data.targets, function (t) {
+        return t.values.length;
+    });
+};
+c3_chart_internal_fn.getMaxDataCountTarget = function (targets) {
+    var length = targets.length,
+        max = 0,
+        maxTarget;
+    if (length > 1) {
+        targets.forEach(function (t) {
+            if (t.values.length > max) {
+                maxTarget = t;
+                max = t.values.length;
+            }
+        });
+    } else {
+        maxTarget = length ? targets[0] : null;
+    }
+    return maxTarget;
+};
+c3_chart_internal_fn.getEdgeX = function (targets) {
+    var $$ = this;
+    return !targets.length ? [0, 0] : [$$.d3.min(targets, function (t) {
+        return t.values[0].x;
+    }), $$.d3.max(targets, function (t) {
+        return t.values[t.values.length - 1].x;
+    })];
+};
+c3_chart_internal_fn.mapToIds = function (targets) {
+    return targets.map(function (d) {
+        return d.id;
+    });
+};
+c3_chart_internal_fn.mapToTargetIds = function (ids) {
+    var $$ = this;
+    return ids ? [].concat(ids) : $$.mapToIds($$.data.targets);
+};
+c3_chart_internal_fn.hasTarget = function (targets, id) {
+    var ids = this.mapToIds(targets),
+        i;
+    for (i = 0; i < ids.length; i++) {
+        if (ids[i] === id) {
+            return true;
+        }
+    }
+    return false;
+};
+c3_chart_internal_fn.isTargetToShow = function (targetId) {
+    return this.hiddenTargetIds.indexOf(targetId) < 0;
+};
+c3_chart_internal_fn.isLegendToShow = function (targetId) {
+    return this.hiddenLegendIds.indexOf(targetId) < 0;
+};
+c3_chart_internal_fn.filterTargetsToShow = function (targets) {
+    var $$ = this;
+    return targets.filter(function (t) {
+        return $$.isTargetToShow(t.id);
+    });
+};
+c3_chart_internal_fn.mapTargetsToUniqueXs = function (targets) {
+    var $$ = this;
+    var xs = $$.d3.set($$.d3.merge(targets.map(function (t) {
+        return t.values.map(function (v) {
+            return +v.x;
+        });
+    }))).values();
+    xs = $$.isTimeSeries() ? xs.map(function (x) {
+        return new Date(+x);
+    }) : xs.map(function (x) {
+        return +x;
+    });
+    return xs.sort(function (a, b) {
+        return a < b ? -1 : a > b ? 1 : a >= b ? 0 : NaN;
+    });
+};
+c3_chart_internal_fn.addHiddenTargetIds = function (targetIds) {
+    targetIds = targetIds instanceof Array ? targetIds : new Array(targetIds);
+    for (var i = 0; i < targetIds.length; i++) {
+        if (this.hiddenTargetIds.indexOf(targetIds[i]) < 0) {
+            this.hiddenTargetIds = this.hiddenTargetIds.concat(targetIds[i]);
+        }
+    }
+};
+c3_chart_internal_fn.removeHiddenTargetIds = function (targetIds) {
+    this.hiddenTargetIds = this.hiddenTargetIds.filter(function (id) {
+        return targetIds.indexOf(id) < 0;
+    });
+};
+c3_chart_internal_fn.addHiddenLegendIds = function (targetIds) {
+    targetIds = targetIds instanceof Array ? targetIds : new Array(targetIds);
+    for (var i = 0; i < targetIds.length; i++) {
+        if (this.hiddenLegendIds.indexOf(targetIds[i]) < 0) {
+            this.hiddenLegendIds = this.hiddenLegendIds.concat(targetIds[i]);
+        }
+    }
+};
+c3_chart_internal_fn.removeHiddenLegendIds = function (targetIds) {
+    this.hiddenLegendIds = this.hiddenLegendIds.filter(function (id) {
+        return targetIds.indexOf(id) < 0;
+    });
+};
+c3_chart_internal_fn.getValuesAsIdKeyed = function (targets) {
+    var ys = {};
+    targets.forEach(function (t) {
+        ys[t.id] = [];
+        t.values.forEach(function (v) {
+            ys[t.id].push(v.value);
+        });
+    });
+    return ys;
+};
+c3_chart_internal_fn.checkValueInTargets = function (targets, checker) {
+    var ids = Object.keys(targets),
+        i,
+        j,
+        values;
+    for (i = 0; i < ids.length; i++) {
+        values = targets[ids[i]].values;
+        for (j = 0; j < values.length; j++) {
+            if (checker(values[j].value)) {
+                return true;
+            }
+        }
+    }
+    return false;
+};
+c3_chart_internal_fn.hasNegativeValueInTargets = function (targets) {
+    return this.checkValueInTargets(targets, function (v) {
+        return v < 0;
+    });
+};
+c3_chart_internal_fn.hasPositiveValueInTargets = function (targets) {
+    return this.checkValueInTargets(targets, function (v) {
+        return v > 0;
+    });
+};
+c3_chart_internal_fn.isOrderDesc = function () {
+    var config = this.config;
+    return typeof config.data_order === 'string' && config.data_order.toLowerCase() === 'desc';
+};
+c3_chart_internal_fn.isOrderAsc = function () {
+    var config = this.config;
+    return typeof config.data_order === 'string' && config.data_order.toLowerCase() === 'asc';
+};
+c3_chart_internal_fn.getOrderFunction = function () {
+    var $$ = this,
+        config = $$.config,
+        orderAsc = $$.isOrderAsc(),
+        orderDesc = $$.isOrderDesc();
+    if (orderAsc || orderDesc) {
+        return function (t1, t2) {
+            var reducer = function reducer(p, c) {
+                return p + Math.abs(c.value);
+            };
+            var t1Sum = t1.values.reduce(reducer, 0),
+                t2Sum = t2.values.reduce(reducer, 0);
+            return orderDesc ? t2Sum - t1Sum : t1Sum - t2Sum;
+        };
+    } else if (isFunction(config.data_order)) {
+        return config.data_order;
+    } else if (isArray(config.data_order)) {
+        var order = config.data_order;
+        return function (t1, t2) {
+            return order.indexOf(t1.id) - order.indexOf(t2.id);
+        };
+    }
+};
+c3_chart_internal_fn.orderTargets = function (targets) {
+    var fct = this.getOrderFunction();
+    if (fct) {
+        targets.sort(fct);
+        if (this.isOrderAsc() || this.isOrderDesc()) {
+            targets.reverse();
+        }
+    }
+    return targets;
+};
+c3_chart_internal_fn.filterByX = function (targets, x) {
+    return this.d3.merge(targets.map(function (t) {
+        return t.values;
+    })).filter(function (v) {
+        return v.x - x === 0;
+    });
+};
+c3_chart_internal_fn.filterRemoveNull = function (data) {
+    return data.filter(function (d) {
+        return isValue(d.value);
+    });
+};
+c3_chart_internal_fn.filterByXDomain = function (targets, xDomain) {
+    return targets.map(function (t) {
+        return {
+            id: t.id,
+            id_org: t.id_org,
+            values: t.values.filter(function (v) {
+                return xDomain[0] <= v.x && v.x <= xDomain[1];
+            })
+        };
+    });
+};
+c3_chart_internal_fn.hasDataLabel = function () {
+    var config = this.config;
+    if (typeof config.data_labels === 'boolean' && config.data_labels) {
+        return true;
+    } else if (_typeof(config.data_labels) === 'object' && notEmpty(config.data_labels)) {
+        return true;
+    }
+    return false;
+};
+c3_chart_internal_fn.getDataLabelLength = function (min, max, key) {
+    var $$ = this,
+        lengths = [0, 0],
+        paddingCoef = 1.3;
+    $$.selectChart.select('svg').selectAll('.dummy').data([min, max]).enter().append('text').text(function (d) {
+        return $$.dataLabelFormat(d.id)(d);
+    }).each(function (d, i) {
+        lengths[i] = this.getBoundingClientRect()[key] * paddingCoef;
+    }).remove();
+    return lengths;
+};
+c3_chart_internal_fn.isNoneArc = function (d) {
+    return this.hasTarget(this.data.targets, d.id);
+}, c3_chart_internal_fn.isArc = function (d) {
+    return 'data' in d && this.hasTarget(this.data.targets, d.data.id);
+};
+c3_chart_internal_fn.findSameXOfValues = function (values, index) {
+    var i,
+        targetX = values[index].x,
+        sames = [];
+    for (i = index - 1; i >= 0; i--) {
+        if (targetX !== values[i].x) {
+            break;
+        }
+        sames.push(values[i]);
+    }
+    for (i = index; i < values.length; i++) {
+        if (targetX !== values[i].x) {
+            break;
+        }
+        sames.push(values[i]);
+    }
+    return sames;
+};
+
+c3_chart_internal_fn.findClosestFromTargets = function (targets, pos) {
+    var $$ = this,
+        candidates;
+
+    // map to array of closest points of each target
+    candidates = targets.map(function (target) {
+        return $$.findClosest(target.values, pos);
+    });
+
+    // decide closest point and return
+    return $$.findClosest(candidates, pos);
+};
+c3_chart_internal_fn.findClosest = function (values, pos) {
+    var $$ = this,
+        minDist = $$.config.point_sensitivity,
+        closest;
+
+    // find mouseovering bar
+    values.filter(function (v) {
+        return v && $$.isBarType(v.id);
+    }).forEach(function (v) {
+        var shape = $$.main.select('.' + CLASS.bars + $$.getTargetSelectorSuffix(v.id) + ' .' + CLASS.bar + '-' + v.index).node();
+        if (!closest && $$.isWithinBar(shape)) {
+            closest = v;
+        }
+    });
+
+    // find closest point from non-bar
+    values.filter(function (v) {
+        return v && !$$.isBarType(v.id);
+    }).forEach(function (v) {
+        var d = $$.dist(v, pos);
+        if (d < minDist) {
+            minDist = d;
+            closest = v;
+        }
+    });
+
+    return closest;
+};
+c3_chart_internal_fn.dist = function (data, pos) {
+    var $$ = this,
+        config = $$.config,
+        xIndex = config.axis_rotated ? 1 : 0,
+        yIndex = config.axis_rotated ? 0 : 1,
+        y = $$.circleY(data, data.index),
+        x = $$.x(data.x);
+    return Math.sqrt(Math.pow(x - pos[xIndex], 2) + Math.pow(y - pos[yIndex], 2));
+};
+c3_chart_internal_fn.convertValuesToStep = function (values) {
+    var converted = [].concat(values),
+        i;
+
+    if (!this.isCategorized()) {
+        return values;
+    }
+
+    for (i = values.length + 1; 0 < i; i--) {
+        converted[i] = converted[i - 1];
+    }
+
+    converted[0] = {
+        x: converted[0].x - 1,
+        value: converted[0].value,
+        id: converted[0].id
+    };
+    converted[values.length + 1] = {
+        x: converted[values.length].x + 1,
+        value: converted[values.length].value,
+        id: converted[values.length].id
+    };
+
+    return converted;
+};
+c3_chart_internal_fn.updateDataAttributes = function (name, attrs) {
+    var $$ = this,
+        config = $$.config,
+        current = config['data_' + name];
+    if (typeof attrs === 'undefined') {
+        return current;
+    }
+    Object.keys(attrs).forEach(function (id) {
+        current[id] = attrs[id];
+    });
+    $$.redraw({ withLegend: true });
+    return current;
+};
+
+c3_chart_internal_fn.load = function (targets, args) {
+    var $$ = this;
+    if (targets) {
+        // filter loading targets if needed
+        if (args.filter) {
+            targets = targets.filter(args.filter);
+        }
+        // set type if args.types || args.type specified
+        if (args.type || args.types) {
+            targets.forEach(function (t) {
+                var type = args.types && args.types[t.id] ? args.types[t.id] : args.type;
+                $$.setTargetType(t.id, type);
+            });
+        }
+        // Update/Add data
+        $$.data.targets.forEach(function (d) {
+            for (var i = 0; i < targets.length; i++) {
+                if (d.id === targets[i].id) {
+                    d.values = targets[i].values;
+                    targets.splice(i, 1);
+                    break;
+                }
+            }
+        });
+        $$.data.targets = $$.data.targets.concat(targets); // add remained
+    }
+
+    // Set targets
+    $$.updateTargets($$.data.targets);
+
+    // Redraw with new targets
+    $$.redraw({ withUpdateOrgXDomain: true, withUpdateXDomain: true, withLegend: true });
+
+    if (args.done) {
+        args.done();
+    }
+};
+c3_chart_internal_fn.loadFromArgs = function (args) {
+    var $$ = this;
+    if (args.data) {
+        $$.load($$.convertDataToTargets(args.data), args);
+    } else if (args.url) {
+        $$.convertUrlToData(args.url, args.mimeType, args.headers, args.keys, function (data) {
+            $$.load($$.convertDataToTargets(data), args);
+        });
+    } else if (args.json) {
+        $$.load($$.convertDataToTargets($$.convertJsonToData(args.json, args.keys)), args);
+    } else if (args.rows) {
+        $$.load($$.convertDataToTargets($$.convertRowsToData(args.rows)), args);
+    } else if (args.columns) {
+        $$.load($$.convertDataToTargets($$.convertColumnsToData(args.columns)), args);
+    } else {
+        $$.load(null, args);
+    }
+};
+c3_chart_internal_fn.unload = function (targetIds, done) {
+    var $$ = this;
+    if (!done) {
+        done = function done() {};
+    }
+    // filter existing target
+    targetIds = targetIds.filter(function (id) {
+        return $$.hasTarget($$.data.targets, id);
+    });
+    // If no target, call done and return
+    if (!targetIds || targetIds.length === 0) {
+        done();
+        return;
+    }
+    $$.svg.selectAll(targetIds.map(function (id) {
+        return $$.selectorTarget(id);
+    })).transition().style('opacity', 0).remove().call($$.endall, done);
+    targetIds.forEach(function (id) {
+        // Reset fadein for future load
+        $$.withoutFadeIn[id] = false;
+        // Remove target's elements
+        if ($$.legend) {
+            $$.legend.selectAll('.' + CLASS.legendItem + $$.getTargetSelectorSuffix(id)).remove();
+        }
+        // Remove target
+        $$.data.targets = $$.data.targets.filter(function (t) {
+            return t.id !== id;
+        });
+    });
+};
+
+c3_chart_internal_fn.getYDomainMin = function (targets) {
+    var $$ = this,
+        config = $$.config,
+        ids = $$.mapToIds(targets),
+        ys = $$.getValuesAsIdKeyed(targets),
+        j,
+        k,
+        baseId,
+        idsInGroup,
+        id,
+        hasNegativeValue;
+    if (config.data_groups.length > 0) {
+        hasNegativeValue = $$.hasNegativeValueInTargets(targets);
+        for (j = 0; j < config.data_groups.length; j++) {
+            // Determine baseId
+            idsInGroup = config.data_groups[j].filter(function (id) {
+                return ids.indexOf(id) >= 0;
+            });
+            if (idsInGroup.length === 0) {
+                continue;
+            }
+            baseId = idsInGroup[0];
+            // Consider negative values
+            if (hasNegativeValue && ys[baseId]) {
+                ys[baseId].forEach(function (v, i) {
+                    ys[baseId][i] = v < 0 ? v : 0;
+                });
+            }
+            // Compute min
+            for (k = 1; k < idsInGroup.length; k++) {
+                id = idsInGroup[k];
+                if (!ys[id]) {
+                    continue;
+                }
+                ys[id].forEach(function (v, i) {
+                    if ($$.axis.getId(id) === $$.axis.getId(baseId) && ys[baseId] && !(hasNegativeValue && +v > 0)) {
+                        ys[baseId][i] += +v;
+                    }
+                });
+            }
+        }
+    }
+    return $$.d3.min(Object.keys(ys).map(function (key) {
+        return $$.d3.min(ys[key]);
+    }));
+};
+c3_chart_internal_fn.getYDomainMax = function (targets) {
+    var $$ = this,
+        config = $$.config,
+        ids = $$.mapToIds(targets),
+        ys = $$.getValuesAsIdKeyed(targets),
+        j,
+        k,
+        baseId,
+        idsInGroup,
+        id,
+        hasPositiveValue;
+    if (config.data_groups.length > 0) {
+        hasPositiveValue = $$.hasPositiveValueInTargets(targets);
+        for (j = 0; j < config.data_groups.length; j++) {
+            // Determine baseId
+            idsInGroup = config.data_groups[j].filter(function (id) {
+                return ids.indexOf(id) >= 0;
+            });
+            if (idsInGroup.length === 0) {
+                continue;
+            }
+            baseId = idsInGroup[0];
+            // Consider positive values
+            if (hasPositiveValue && ys[baseId]) {
+                ys[baseId].forEach(function (v, i) {
+                    ys[baseId][i] = v > 0 ? v : 0;
+                });
+            }
+            // Compute max
+            for (k = 1; k < idsInGroup.length; k++) {
+                id = idsInGroup[k];
+                if (!ys[id]) {
+                    continue;
+                }
+                ys[id].forEach(function (v, i) {
+                    if ($$.axis.getId(id) === $$.axis.getId(baseId) && ys[baseId] && !(hasPositiveValue && +v < 0)) {
+                        ys[baseId][i] += +v;
+                    }
+                });
+            }
+        }
+    }
+    return $$.d3.max(Object.keys(ys).map(function (key) {
+        return $$.d3.max(ys[key]);
+    }));
+};
+c3_chart_internal_fn.getYDomain = function (targets, axisId, xDomain) {
+    var $$ = this,
+        config = $$.config,
+        targetsByAxisId = targets.filter(function (t) {
+        return $$.axis.getId(t.id) === axisId;
+    }),
+        yTargets = xDomain ? $$.filterByXDomain(targetsByAxisId, xDomain) : targetsByAxisId,
+        yMin = axisId === 'y2' ? config.axis_y2_min : config.axis_y_min,
+        yMax = axisId === 'y2' ? config.axis_y2_max : config.axis_y_max,
+        yDomainMin = $$.getYDomainMin(yTargets),
+        yDomainMax = $$.getYDomainMax(yTargets),
+        domain,
+        domainLength,
+        padding,
+        padding_top,
+        padding_bottom,
+        center = axisId === 'y2' ? config.axis_y2_center : config.axis_y_center,
+        yDomainAbs,
+        lengths,
+        diff,
+        ratio,
+        isAllPositive,
+        isAllNegative,
+        isZeroBased = $$.hasType('bar', yTargets) && config.bar_zerobased || $$.hasType('area', yTargets) && config.area_zerobased,
+        isInverted = axisId === 'y2' ? config.axis_y2_inverted : config.axis_y_inverted,
+        showHorizontalDataLabel = $$.hasDataLabel() && config.axis_rotated,
+        showVerticalDataLabel = $$.hasDataLabel() && !config.axis_rotated;
+
+    // MEMO: avoid inverting domain unexpectedly
+    yDomainMin = isValue(yMin) ? yMin : isValue(yMax) ? yDomainMin < yMax ? yDomainMin : yMax - 10 : yDomainMin;
+    yDomainMax = isValue(yMax) ? yMax : isValue(yMin) ? yMin < yDomainMax ? yDomainMax : yMin + 10 : yDomainMax;
+
+    if (yTargets.length === 0) {
+        // use current domain if target of axisId is none
+        return axisId === 'y2' ? $$.y2.domain() : $$.y.domain();
+    }
+    if (isNaN(yDomainMin)) {
+        // set minimum to zero when not number
+        yDomainMin = 0;
+    }
+    if (isNaN(yDomainMax)) {
+        // set maximum to have same value as yDomainMin
+        yDomainMax = yDomainMin;
+    }
+    if (yDomainMin === yDomainMax) {
+        yDomainMin < 0 ? yDomainMax = 0 : yDomainMin = 0;
+    }
+    isAllPositive = yDomainMin >= 0 && yDomainMax >= 0;
+    isAllNegative = yDomainMin <= 0 && yDomainMax <= 0;
+
+    // Cancel zerobased if axis_*_min / axis_*_max specified
+    if (isValue(yMin) && isAllPositive || isValue(yMax) && isAllNegative) {
+        isZeroBased = false;
+    }
+
+    // Bar/Area chart should be 0-based if all positive|negative
+    if (isZeroBased) {
+        if (isAllPositive) {
+            yDomainMin = 0;
+        }
+        if (isAllNegative) {
+            yDomainMax = 0;
+        }
+    }
+
+    domainLength = Math.abs(yDomainMax - yDomainMin);
+    padding = padding_top = padding_bottom = domainLength * 0.1;
+
+    if (typeof center !== 'undefined') {
+        yDomainAbs = Math.max(Math.abs(yDomainMin), Math.abs(yDomainMax));
+        yDomainMax = center + yDomainAbs;
+        yDomainMin = center - yDomainAbs;
+    }
+    // add padding for data label
+    if (showHorizontalDataLabel) {
+        lengths = $$.getDataLabelLength(yDomainMin, yDomainMax, 'width');
+        diff = diffDomain($$.y.range());
+        ratio = [lengths[0] / diff, lengths[1] / diff];
+        padding_top += domainLength * (ratio[1] / (1 - ratio[0] - ratio[1]));
+        padding_bottom += domainLength * (ratio[0] / (1 - ratio[0] - ratio[1]));
+    } else if (showVerticalDataLabel) {
+        lengths = $$.getDataLabelLength(yDomainMin, yDomainMax, 'height');
+        padding_top += $$.axis.convertPixelsToAxisPadding(lengths[1], domainLength);
+        padding_bottom += $$.axis.convertPixelsToAxisPadding(lengths[0], domainLength);
+    }
+    if (axisId === 'y' && notEmpty(config.axis_y_padding)) {
+        padding_top = $$.axis.getPadding(config.axis_y_padding, 'top', padding_top, domainLength);
+        padding_bottom = $$.axis.getPadding(config.axis_y_padding, 'bottom', padding_bottom, domainLength);
+    }
+    if (axisId === 'y2' && notEmpty(config.axis_y2_padding)) {
+        padding_top = $$.axis.getPadding(config.axis_y2_padding, 'top', padding_top, domainLength);
+        padding_bottom = $$.axis.getPadding(config.axis_y2_padding, 'bottom', padding_bottom, domainLength);
+    }
+    // Bar/Area chart should be 0-based if all positive|negative
+    if (isZeroBased) {
+        if (isAllPositive) {
+            padding_bottom = yDomainMin;
+        }
+        if (isAllNegative) {
+            padding_top = -yDomainMax;
+        }
+    }
+    domain = [yDomainMin - padding_bottom, yDomainMax + padding_top];
+    return isInverted ? domain.reverse() : domain;
+};
+c3_chart_internal_fn.getXDomainMin = function (targets) {
+    var $$ = this,
+        config = $$.config;
+    return isDefined(config.axis_x_min) ? $$.isTimeSeries() ? this.parseDate(config.axis_x_min) : config.axis_x_min : $$.d3.min(targets, function (t) {
+        return $$.d3.min(t.values, function (v) {
+            return v.x;
+        });
+    });
+};
+c3_chart_internal_fn.getXDomainMax = function (targets) {
+    var $$ = this,
+        config = $$.config;
+    return isDefined(config.axis_x_max) ? $$.isTimeSeries() ? this.parseDate(config.axis_x_max) : config.axis_x_max : $$.d3.max(targets, function (t) {
+        return $$.d3.max(t.values, function (v) {
+            return v.x;
+        });
+    });
+};
+c3_chart_internal_fn.getXDomainPadding = function (domain) {
+    var $$ = this,
+        config = $$.config,
+        diff = domain[1] - domain[0],
+        maxDataCount,
+        padding,
+        paddingLeft,
+        paddingRight;
+    if ($$.isCategorized()) {
+        padding = 0;
+    } else if ($$.hasType('bar')) {
+        maxDataCount = $$.getMaxDataCount();
+        padding = maxDataCount > 1 ? diff / (maxDataCount - 1) / 2 : 0.5;
+    } else {
+        padding = diff * 0.01;
+    }
+    if (_typeof(config.axis_x_padding) === 'object' && notEmpty(config.axis_x_padding)) {
+        paddingLeft = isValue(config.axis_x_padding.left) ? config.axis_x_padding.left : padding;
+        paddingRight = isValue(config.axis_x_padding.right) ? config.axis_x_padding.right : padding;
+    } else if (typeof config.axis_x_padding === 'number') {
+        paddingLeft = paddingRight = config.axis_x_padding;
+    } else {
+        paddingLeft = paddingRight = padding;
+    }
+    return { left: paddingLeft, right: paddingRight };
+};
+c3_chart_internal_fn.getXDomain = function (targets) {
+    var $$ = this,
+        xDomain = [$$.getXDomainMin(targets), $$.getXDomainMax(targets)],
+        firstX = xDomain[0],
+        lastX = xDomain[1],
+        padding = $$.getXDomainPadding(xDomain),
+        min = 0,
+        max = 0;
+    // show center of x domain if min and max are the same
+    if (firstX - lastX === 0 && !$$.isCategorized()) {
+        if ($$.isTimeSeries()) {
+            firstX = new Date(firstX.getTime() * 0.5);
+            lastX = new Date(lastX.getTime() * 1.5);
+        } else {
+            firstX = firstX === 0 ? 1 : firstX * 0.5;
+            lastX = lastX === 0 ? -1 : lastX * 1.5;
+        }
+    }
+    if (firstX || firstX === 0) {
+        min = $$.isTimeSeries() ? new Date(firstX.getTime() - padding.left) : firstX - padding.left;
+    }
+    if (lastX || lastX === 0) {
+        max = $$.isTimeSeries() ? new Date(lastX.getTime() + padding.right) : lastX + padding.right;
+    }
+    return [min, max];
+};
+c3_chart_internal_fn.updateXDomain = function (targets, withUpdateXDomain, withUpdateOrgXDomain, withTrim, domain) {
+    var $$ = this,
+        config = $$.config;
+
+    if (withUpdateOrgXDomain) {
+        $$.x.domain(domain ? domain : $$.d3.extent($$.getXDomain(targets)));
+        $$.orgXDomain = $$.x.domain();
+        if (config.zoom_enabled) {
+            $$.zoom.scale($$.x).updateScaleExtent();
+        }
+        $$.subX.domain($$.x.domain());
+        if ($$.brush) {
+            $$.brush.scale($$.subX);
+        }
+    }
+    if (withUpdateXDomain) {
+        $$.x.domain(domain ? domain : !$$.brush || $$.brush.empty() ? $$.orgXDomain : $$.brush.extent());
+        if (config.zoom_enabled) {
+            $$.zoom.scale($$.x).updateScaleExtent();
+        }
+    }
+
+    // Trim domain when too big by zoom mousemove event
+    if (withTrim) {
+        $$.x.domain($$.trimXDomain($$.x.orgDomain()));
+    }
+
+    return $$.x.domain();
+};
+c3_chart_internal_fn.trimXDomain = function (domain) {
+    var zoomDomain = this.getZoomDomain(),
+        min = zoomDomain[0],
+        max = zoomDomain[1];
+    if (domain[0] <= min) {
+        domain[1] = +domain[1] + (min - domain[0]);
+        domain[0] = min;
+    }
+    if (max <= domain[1]) {
+        domain[0] = +domain[0] - (domain[1] - max);
+        domain[1] = max;
+    }
+    return domain;
+};
+
+c3_chart_internal_fn.drag = function (mouse) {
+    var $$ = this,
+        config = $$.config,
+        main = $$.main,
+        d3 = $$.d3;
+    var sx, sy, mx, my, minX, maxX, minY, maxY;
+
+    if ($$.hasArcType()) {
+        return;
+    }
+    if (!config.data_selection_enabled) {
+        return;
+    } // do nothing if not selectable
+    if (config.zoom_enabled && !$$.zoom.altDomain) {
+        return;
+    } // skip if zoomable because of conflict drag dehavior
+    if (!config.data_selection_multiple) {
+        return;
+    } // skip when single selection because drag is used for multiple selection
+
+    sx = $$.dragStart[0];
+    sy = $$.dragStart[1];
+    mx = mouse[0];
+    my = mouse[1];
+    minX = Math.min(sx, mx);
+    maxX = Math.max(sx, mx);
+    minY = config.data_selection_grouped ? $$.margin.top : Math.min(sy, my);
+    maxY = config.data_selection_grouped ? $$.height : Math.max(sy, my);
+
+    main.select('.' + CLASS.dragarea).attr('x', minX).attr('y', minY).attr('width', maxX - minX).attr('height', maxY - minY);
+    // TODO: binary search when multiple xs
+    main.selectAll('.' + CLASS.shapes).selectAll('.' + CLASS.shape).filter(function (d) {
+        return config.data_selection_isselectable(d);
+    }).each(function (d, i) {
+        var shape = d3.select(this),
+            isSelected = shape.classed(CLASS.SELECTED),
+            isIncluded = shape.classed(CLASS.INCLUDED),
+            _x,
+            _y,
+            _w,
+            _h,
+            toggle,
+            isWithin = false,
+            box;
+        if (shape.classed(CLASS.circle)) {
+            _x = shape.attr("cx") * 1;
+            _y = shape.attr("cy") * 1;
+            toggle = $$.togglePoint;
+            isWithin = minX < _x && _x < maxX && minY < _y && _y < maxY;
+        } else if (shape.classed(CLASS.bar)) {
+            box = getPathBox(this);
+            _x = box.x;
+            _y = box.y;
+            _w = box.width;
+            _h = box.height;
+            toggle = $$.togglePath;
+            isWithin = !(maxX < _x || _x + _w < minX) && !(maxY < _y || _y + _h < minY);
+        } else {
+            // line/area selection not supported yet
+            return;
+        }
+        if (isWithin ^ isIncluded) {
+            shape.classed(CLASS.INCLUDED, !isIncluded);
+            // TODO: included/unincluded callback here
+            shape.classed(CLASS.SELECTED, !isSelected);
+            toggle.call($$, !isSelected, shape, d, i);
+        }
+    });
+};
+
+c3_chart_internal_fn.dragstart = function (mouse) {
+    var $$ = this,
+        config = $$.config;
+    if ($$.hasArcType()) {
+        return;
+    }
+    if (!config.data_selection_enabled) {
+        return;
+    } // do nothing if not selectable
+    $$.dragStart = mouse;
+    $$.main.select('.' + CLASS.chart).append('rect').attr('class', CLASS.dragarea).style('opacity', 0.1);
+    $$.dragging = true;
+};
+
+c3_chart_internal_fn.dragend = function () {
+    var $$ = this,
+        config = $$.config;
+    if ($$.hasArcType()) {
+        return;
+    }
+    if (!config.data_selection_enabled) {
+        return;
+    } // do nothing if not selectable
+    $$.main.select('.' + CLASS.dragarea).transition().duration(100).style('opacity', 0).remove();
+    $$.main.selectAll('.' + CLASS.shape).classed(CLASS.INCLUDED, false);
+    $$.dragging = false;
+};
+
+c3_chart_internal_fn.getYFormat = function (forArc) {
+    var $$ = this,
+        formatForY = forArc && !$$.hasType('gauge') ? $$.defaultArcValueFormat : $$.yFormat,
+        formatForY2 = forArc && !$$.hasType('gauge') ? $$.defaultArcValueFormat : $$.y2Format;
+    return function (v, ratio, id) {
+        var format = $$.axis.getId(id) === 'y2' ? formatForY2 : formatForY;
+        return format.call($$, v, ratio);
+    };
+};
+c3_chart_internal_fn.yFormat = function (v) {
+    var $$ = this,
+        config = $$.config,
+        format = config.axis_y_tick_format ? config.axis_y_tick_format : $$.defaultValueFormat;
+    return format(v);
+};
+c3_chart_internal_fn.y2Format = function (v) {
+    var $$ = this,
+        config = $$.config,
+        format = config.axis_y2_tick_format ? config.axis_y2_tick_format : $$.defaultValueFormat;
+    return format(v);
+};
+c3_chart_internal_fn.defaultValueFormat = function (v) {
+    return isValue(v) ? +v : "";
+};
+c3_chart_internal_fn.defaultArcValueFormat = function (v, ratio) {
+    return (ratio * 100).toFixed(1) + '%';
+};
+c3_chart_internal_fn.dataLabelFormat = function (targetId) {
+    var $$ = this,
+        data_labels = $$.config.data_labels,
+        format,
+        defaultFormat = function defaultFormat(v) {
+        return isValue(v) ? +v : "";
+    };
+    // find format according to axis id
+    if (typeof data_labels.format === 'function') {
+        format = data_labels.format;
+    } else if (_typeof(data_labels.format) === 'object') {
+        if (data_labels.format[targetId]) {
+            format = data_labels.format[targetId] === true ? defaultFormat : data_labels.format[targetId];
+        } else {
+            format = function format() {
+                return '';
+            };
+        }
+    } else {
+        format = defaultFormat;
+    }
+    return format;
+};
+
+c3_chart_internal_fn.initGrid = function () {
+    var $$ = this,
+        config = $$.config,
+        d3 = $$.d3;
+    $$.grid = $$.main.append('g').attr("clip-path", $$.clipPathForGrid).attr('class', CLASS.grid);
+    if (config.grid_x_show) {
+        $$.grid.append("g").attr("class", CLASS.xgrids);
+    }
+    if (config.grid_y_show) {
+        $$.grid.append('g').attr('class', CLASS.ygrids);
+    }
+    if (config.grid_focus_show) {
+        $$.grid.append('g').attr("class", CLASS.xgridFocus).append('line').attr('class', CLASS.xgridFocus);
+    }
+    $$.xgrid = d3.selectAll([]);
+    if (!config.grid_lines_front) {
+        $$.initGridLines();
+    }
+};
+c3_chart_internal_fn.initGridLines = function () {
+    var $$ = this,
+        d3 = $$.d3;
+    $$.gridLines = $$.main.append('g').attr("clip-path", $$.clipPathForGrid).attr('class', CLASS.grid + ' ' + CLASS.gridLines);
+    $$.gridLines.append('g').attr("class", CLASS.xgridLines);
+    $$.gridLines.append('g').attr('class', CLASS.ygridLines);
+    $$.xgridLines = d3.selectAll([]);
+};
+c3_chart_internal_fn.updateXGrid = function (withoutUpdate) {
+    var $$ = this,
+        config = $$.config,
+        d3 = $$.d3,
+        xgridData = $$.generateGridData(config.grid_x_type, $$.x),
+        tickOffset = $$.isCategorized() ? $$.xAxis.tickOffset() : 0;
+
+    $$.xgridAttr = config.axis_rotated ? {
+        'x1': 0,
+        'x2': $$.width,
+        'y1': function y1(d) {
+            return $$.x(d) - tickOffset;
+        },
+        'y2': function y2(d) {
+            return $$.x(d) - tickOffset;
+        }
+    } : {
+        'x1': function x1(d) {
+            return $$.x(d) + tickOffset;
+        },
+        'x2': function x2(d) {
+            return $$.x(d) + tickOffset;
+        },
+        'y1': 0,
+        'y2': $$.height
+    };
+
+    $$.xgrid = $$.main.select('.' + CLASS.xgrids).selectAll('.' + CLASS.xgrid).data(xgridData);
+    $$.xgrid.enter().append('line').attr("class", CLASS.xgrid);
+    if (!withoutUpdate) {
+        $$.xgrid.attr($$.xgridAttr).style("opacity", function () {
+            return +d3.select(this).attr(config.axis_rotated ? 'y1' : 'x1') === (config.axis_rotated ? $$.height : 0) ? 0 : 1;
+        });
+    }
+    $$.xgrid.exit().remove();
+};
+
+c3_chart_internal_fn.updateYGrid = function () {
+    var $$ = this,
+        config = $$.config,
+        gridValues = $$.yAxis.tickValues() || $$.y.ticks(config.grid_y_ticks);
+    $$.ygrid = $$.main.select('.' + CLASS.ygrids).selectAll('.' + CLASS.ygrid).data(gridValues);
+    $$.ygrid.enter().append('line').attr('class', CLASS.ygrid);
+    $$.ygrid.attr("x1", config.axis_rotated ? $$.y : 0).attr("x2", config.axis_rotated ? $$.y : $$.width).attr("y1", config.axis_rotated ? 0 : $$.y).attr("y2", config.axis_rotated ? $$.height : $$.y);
+    $$.ygrid.exit().remove();
+    $$.smoothLines($$.ygrid, 'grid');
+};
+
+c3_chart_internal_fn.gridTextAnchor = function (d) {
+    return d.position ? d.position : "end";
+};
+c3_chart_internal_fn.gridTextDx = function (d) {
+    return d.position === 'start' ? 4 : d.position === 'middle' ? 0 : -4;
+};
+c3_chart_internal_fn.xGridTextX = function (d) {
+    return d.position === 'start' ? -this.height : d.position === 'middle' ? -this.height / 2 : 0;
+};
+c3_chart_internal_fn.yGridTextX = function (d) {
+    return d.position === 'start' ? 0 : d.position === 'middle' ? this.width / 2 : this.width;
+};
+c3_chart_internal_fn.updateGrid = function (duration) {
+    var $$ = this,
+        main = $$.main,
+        config = $$.config,
+        xgridLine,
+        ygridLine,
+        yv;
+
+    // hide if arc type
+    $$.grid.style('visibility', $$.hasArcType() ? 'hidden' : 'visible');
+
+    main.select('line.' + CLASS.xgridFocus).style("visibility", "hidden");
+    if (config.grid_x_show) {
+        $$.updateXGrid();
+    }
+    $$.xgridLines = main.select('.' + CLASS.xgridLines).selectAll('.' + CLASS.xgridLine).data(config.grid_x_lines);
+    // enter
+    xgridLine = $$.xgridLines.enter().append('g').attr("class", function (d) {
+        return CLASS.xgridLine + (d['class'] ? ' ' + d['class'] : '');
+    });
+    xgridLine.append('line').style("opacity", 0);
+    xgridLine.append('text').attr("text-anchor", $$.gridTextAnchor).attr("transform", config.axis_rotated ? "" : "rotate(-90)").attr('dx', $$.gridTextDx).attr('dy', -5).style("opacity", 0);
+    // udpate
+    // done in d3.transition() of the end of this function
+    // exit
+    $$.xgridLines.exit().transition().duration(duration).style("opacity", 0).remove();
+
+    // Y-Grid
+    if (config.grid_y_show) {
+        $$.updateYGrid();
+    }
+    $$.ygridLines = main.select('.' + CLASS.ygridLines).selectAll('.' + CLASS.ygridLine).data(config.grid_y_lines);
+    // enter
+    ygridLine = $$.ygridLines.enter().append('g').attr("class", function (d) {
+        return CLASS.ygridLine + (d['class'] ? ' ' + d['class'] : '');
+    });
+    ygridLine.append('line').style("opacity", 0);
+    ygridLine.append('text').attr("text-anchor", $$.gridTextAnchor).attr("transform", config.axis_rotated ? "rotate(-90)" : "").attr('dx', $$.gridTextDx).attr('dy', -5).style("opacity", 0);
+    // update
+    yv = $$.yv.bind($$);
+    $$.ygridLines.select('line').transition().duration(duration).attr("x1", config.axis_rotated ? yv : 0).attr("x2", config.axis_rotated ? yv : $$.width).attr("y1", config.axis_rotated ? 0 : yv).attr("y2", config.axis_rotated ? $$.height : yv).style("opacity", 1);
+    $$.ygridLines.select('text').transition().duration(duration).attr("x", config.axis_rotated ? $$.xGridTextX.bind($$) : $$.yGridTextX.bind($$)).attr("y", yv).text(function (d) {
+        return d.text;
+    }).style("opacity", 1);
+    // exit
+    $$.ygridLines.exit().transition().duration(duration).style("opacity", 0).remove();
+};
+c3_chart_internal_fn.redrawGrid = function (withTransition) {
+    var $$ = this,
+        config = $$.config,
+        xv = $$.xv.bind($$),
+        lines = $$.xgridLines.select('line'),
+        texts = $$.xgridLines.select('text');
+    return [(withTransition ? lines.transition() : lines).attr("x1", config.axis_rotated ? 0 : xv).attr("x2", config.axis_rotated ? $$.width : xv).attr("y1", config.axis_rotated ? xv : 0).attr("y2", config.axis_rotated ? xv : $$.height).style("opacity", 1), (withTransition ? texts.transition() : texts).attr("x", config.axis_rotated ? $$.yGridTextX.bind($$) : $$.xGridTextX.bind($$)).attr("y", xv).text(function (d) {
+        return d.text;
+    }).style("opacity", 1)];
+};
+c3_chart_internal_fn.showXGridFocus = function (selectedData) {
+    var $$ = this,
+        config = $$.config,
+        dataToShow = selectedData.filter(function (d) {
+        return d && isValue(d.value);
+    }),
+        focusEl = $$.main.selectAll('line.' + CLASS.xgridFocus),
+        xx = $$.xx.bind($$);
+    if (!config.tooltip_show) {
+        return;
+    }
+    // Hide when scatter plot exists
+    if ($$.hasType('scatter') || $$.hasArcType()) {
+        return;
+    }
+    focusEl.style("visibility", "visible").data([dataToShow[0]]).attr(config.axis_rotated ? 'y1' : 'x1', xx).attr(config.axis_rotated ? 'y2' : 'x2', xx);
+    $$.smoothLines(focusEl, 'grid');
+};
+c3_chart_internal_fn.hideXGridFocus = function () {
+    this.main.select('line.' + CLASS.xgridFocus).style("visibility", "hidden");
+};
+c3_chart_internal_fn.updateXgridFocus = function () {
+    var $$ = this,
+        config = $$.config;
+    $$.main.select('line.' + CLASS.xgridFocus).attr("x1", config.axis_rotated ? 0 : -10).attr("x2", config.axis_rotated ? $$.width : -10).attr("y1", config.axis_rotated ? -10 : 0).attr("y2", config.axis_rotated ? -10 : $$.height);
+};
+c3_chart_internal_fn.generateGridData = function (type, scale) {
+    var $$ = this,
+        gridData = [],
+        xDomain,
+        firstYear,
+        lastYear,
+        i,
+        tickNum = $$.main.select("." + CLASS.axisX).selectAll('.tick').size();
+    if (type === 'year') {
+        xDomain = $$.getXDomain();
+        firstYear = xDomain[0].getFullYear();
+        lastYear = xDomain[1].getFullYear();
+        for (i = firstYear; i <= lastYear; i++) {
+            gridData.push(new Date(i + '-01-01 00:00:00'));
+        }
+    } else {
+        gridData = scale.ticks(10);
+        if (gridData.length > tickNum) {
+            // use only int
+            gridData = gridData.filter(function (d) {
+                return ("" + d).indexOf('.') < 0;
+            });
+        }
+    }
+    return gridData;
+};
+c3_chart_internal_fn.getGridFilterToRemove = function (params) {
+    return params ? function (line) {
+        var found = false;
+        [].concat(params).forEach(function (param) {
+            if ('value' in param && line.value === param.value || 'class' in param && line['class'] === param['class']) {
+                found = true;
+            }
+        });
+        return found;
+    } : function () {
+        return true;
+    };
+};
+c3_chart_internal_fn.removeGridLines = function (params, forX) {
+    var $$ = this,
+        config = $$.config,
+        toRemove = $$.getGridFilterToRemove(params),
+        toShow = function toShow(line) {
+        return !toRemove(line);
+    },
+        classLines = forX ? CLASS.xgridLines : CLASS.ygridLines,
+        classLine = forX ? CLASS.xgridLine : CLASS.ygridLine;
+    $$.main.select('.' + classLines).selectAll('.' + classLine).filter(toRemove).transition().duration(config.transition_duration).style('opacity', 0).remove();
+    if (forX) {
+        config.grid_x_lines = config.grid_x_lines.filter(toShow);
+    } else {
+        config.grid_y_lines = config.grid_y_lines.filter(toShow);
+    }
+};
+
+c3_chart_internal_fn.initEventRect = function () {
+    var $$ = this;
+    $$.main.select('.' + CLASS.chart).append("g").attr("class", CLASS.eventRects).style('fill-opacity', 0);
+};
+c3_chart_internal_fn.redrawEventRect = function () {
+    var $$ = this,
+        config = $$.config,
+        eventRectUpdate,
+        maxDataCountTarget,
+        isMultipleX = $$.isMultipleX();
+
+    // rects for mouseover
+    var eventRects = $$.main.select('.' + CLASS.eventRects).style('cursor', config.zoom_enabled ? config.axis_rotated ? 'ns-resize' : 'ew-resize' : null).classed(CLASS.eventRectsMultiple, isMultipleX).classed(CLASS.eventRectsSingle, !isMultipleX);
+
+    // clear old rects
+    eventRects.selectAll('.' + CLASS.eventRect).remove();
+
+    // open as public variable
+    $$.eventRect = eventRects.selectAll('.' + CLASS.eventRect);
+
+    if (isMultipleX) {
+        eventRectUpdate = $$.eventRect.data([0]);
+        // enter : only one rect will be added
+        $$.generateEventRectsForMultipleXs(eventRectUpdate.enter());
+        // update
+        $$.updateEventRect(eventRectUpdate);
+        // exit : not needed because always only one rect exists
+    } else {
+        // Set data and update $$.eventRect
+        maxDataCountTarget = $$.getMaxDataCountTarget($$.data.targets);
+        eventRects.datum(maxDataCountTarget ? maxDataCountTarget.values : []);
+        $$.eventRect = eventRects.selectAll('.' + CLASS.eventRect);
+        eventRectUpdate = $$.eventRect.data(function (d) {
+            return d;
+        });
+        // enter
+        $$.generateEventRectsForSingleX(eventRectUpdate.enter());
+        // update
+        $$.updateEventRect(eventRectUpdate);
+        // exit
+        eventRectUpdate.exit().remove();
+    }
+};
+c3_chart_internal_fn.updateEventRect = function (eventRectUpdate) {
+    var $$ = this,
+        config = $$.config,
+        x,
+        y,
+        w,
+        h,
+        rectW,
+        rectX;
+
+    // set update selection if null
+    eventRectUpdate = eventRectUpdate || $$.eventRect.data(function (d) {
+        return d;
+    });
+
+    if ($$.isMultipleX()) {
+        // TODO: rotated not supported yet
+        x = 0;
+        y = 0;
+        w = $$.width;
+        h = $$.height;
+    } else {
+        if (($$.isCustomX() || $$.isTimeSeries()) && !$$.isCategorized()) {
+
+            // update index for x that is used by prevX and nextX
+            $$.updateXs();
+
+            rectW = function rectW(d) {
+                var prevX = $$.getPrevX(d.index),
+                    nextX = $$.getNextX(d.index);
+
+                // if there this is a single data point make the eventRect full width (or height)
+                if (prevX === null && nextX === null) {
+                    return config.axis_rotated ? $$.height : $$.width;
+                }
+
+                if (prevX === null) {
+                    prevX = $$.x.domain()[0];
+                }
+                if (nextX === null) {
+                    nextX = $$.x.domain()[1];
+                }
+
+                return Math.max(0, ($$.x(nextX) - $$.x(prevX)) / 2);
+            };
+            rectX = function rectX(d) {
+                var prevX = $$.getPrevX(d.index),
+                    nextX = $$.getNextX(d.index),
+                    thisX = $$.data.xs[d.id][d.index];
+
+                // if there this is a single data point position the eventRect at 0
+                if (prevX === null && nextX === null) {
+                    return 0;
+                }
+
+                if (prevX === null) {
+                    prevX = $$.x.domain()[0];
+                }
+
+                return ($$.x(thisX) + $$.x(prevX)) / 2;
+            };
+        } else {
+            rectW = $$.getEventRectWidth();
+            rectX = function rectX(d) {
+                return $$.x(d.x) - rectW / 2;
+            };
+        }
+        x = config.axis_rotated ? 0 : rectX;
+        y = config.axis_rotated ? rectX : 0;
+        w = config.axis_rotated ? $$.width : rectW;
+        h = config.axis_rotated ? rectW : $$.height;
+    }
+
+    eventRectUpdate.attr('class', $$.classEvent.bind($$)).attr("x", x).attr("y", y).attr("width", w).attr("height", h);
+};
+c3_chart_internal_fn.generateEventRectsForSingleX = function (eventRectEnter) {
+    var $$ = this,
+        d3 = $$.d3,
+        config = $$.config;
+    eventRectEnter.append("rect").attr("class", $$.classEvent.bind($$)).style("cursor", config.data_selection_enabled && config.data_selection_grouped ? "pointer" : null).on('mouseover', function (d) {
+        var index = d.index;
+
+        if ($$.dragging || $$.flowing) {
+            return;
+        } // do nothing while dragging/flowing
+        if ($$.hasArcType()) {
+            return;
+        }
+
+        // Expand shapes for selection
+        if (config.point_focus_expand_enabled) {
+            $$.expandCircles(index, null, true);
+        }
+        $$.expandBars(index, null, true);
+
+        // Call event handler
+        $$.main.selectAll('.' + CLASS.shape + '-' + index).each(function (d) {
+            config.data_onmouseover.call($$.api, d);
+        });
+    }).on('mouseout', function (d) {
+        var index = d.index;
+        if (!$$.config) {
+            return;
+        } // chart is destroyed
+        if ($$.hasArcType()) {
+            return;
+        }
+        $$.hideXGridFocus();
+        $$.hideTooltip();
+        // Undo expanded shapes
+        $$.unexpandCircles();
+        $$.unexpandBars();
+        // Call event handler
+        $$.main.selectAll('.' + CLASS.shape + '-' + index).each(function (d) {
+            config.data_onmouseout.call($$.api, d);
+        });
+    }).on('mousemove', function (d) {
+        var selectedData,
+            index = d.index,
+            eventRect = $$.svg.select('.' + CLASS.eventRect + '-' + index);
+
+        if ($$.dragging || $$.flowing) {
+            return;
+        } // do nothing while dragging/flowing
+        if ($$.hasArcType()) {
+            return;
+        }
+
+        if ($$.isStepType(d) && $$.config.line_step_type === 'step-after' && d3.mouse(this)[0] < $$.x($$.getXValue(d.id, index))) {
+            index -= 1;
+        }
+
+        // Show tooltip
+        selectedData = $$.filterTargetsToShow($$.data.targets).map(function (t) {
+            return $$.addName($$.getValueOnIndex(t.values, index));
+        });
+
+        if (config.tooltip_grouped) {
+            $$.showTooltip(selectedData, this);
+            $$.showXGridFocus(selectedData);
+        }
+
+        if (config.tooltip_grouped && (!config.data_selection_enabled || config.data_selection_grouped)) {
+            return;
+        }
+
+        $$.main.selectAll('.' + CLASS.shape + '-' + index).each(function () {
+            d3.select(this).classed(CLASS.EXPANDED, true);
+            if (config.data_selection_enabled) {
+                eventRect.style('cursor', config.data_selection_grouped ? 'pointer' : null);
+            }
+            if (!config.tooltip_grouped) {
+                $$.hideXGridFocus();
+                $$.hideTooltip();
+                if (!config.data_selection_grouped) {
+                    $$.unexpandCircles(index);
+                    $$.unexpandBars(index);
+                }
+            }
+        }).filter(function (d) {
+            return $$.isWithinShape(this, d);
+        }).each(function (d) {
+            if (config.data_selection_enabled && (config.data_selection_grouped || config.data_selection_isselectable(d))) {
+                eventRect.style('cursor', 'pointer');
+            }
+            if (!config.tooltip_grouped) {
+                $$.showTooltip([d], this);
+                $$.showXGridFocus([d]);
+                if (config.point_focus_expand_enabled) {
+                    $$.expandCircles(index, d.id, true);
+                }
+                $$.expandBars(index, d.id, true);
+            }
+        });
+    }).on('click', function (d) {
+        var index = d.index;
+        if ($$.hasArcType() || !$$.toggleShape) {
+            return;
+        }
+        if ($$.cancelClick) {
+            $$.cancelClick = false;
+            return;
+        }
+        if ($$.isStepType(d) && config.line_step_type === 'step-after' && d3.mouse(this)[0] < $$.x($$.getXValue(d.id, index))) {
+            index -= 1;
+        }
+        $$.main.selectAll('.' + CLASS.shape + '-' + index).each(function (d) {
+            if (config.data_selection_grouped || $$.isWithinShape(this, d)) {
+                $$.toggleShape(this, d, index);
+                $$.config.data_onclick.call($$.api, d, this);
+            }
+        });
+    }).call(config.data_selection_draggable && $$.drag ? d3.behavior.drag().origin(Object).on('drag', function () {
+        $$.drag(d3.mouse(this));
+    }).on('dragstart', function () {
+        $$.dragstart(d3.mouse(this));
+    }).on('dragend', function () {
+        $$.dragend();
+    }) : function () {});
+};
+
+c3_chart_internal_fn.generateEventRectsForMultipleXs = function (eventRectEnter) {
+    var $$ = this,
+        d3 = $$.d3,
+        config = $$.config;
+
+    function mouseout() {
+        $$.svg.select('.' + CLASS.eventRect).style('cursor', null);
+        $$.hideXGridFocus();
+        $$.hideTooltip();
+        $$.unexpandCircles();
+        $$.unexpandBars();
+    }
+
+    eventRectEnter.append('rect').attr('x', 0).attr('y', 0).attr('width', $$.width).attr('height', $$.height).attr('class', CLASS.eventRect).on('mouseout', function () {
+        if (!$$.config) {
+            return;
+        } // chart is destroyed
+        if ($$.hasArcType()) {
+            return;
+        }
+        mouseout();
+    }).on('mousemove', function () {
+        var targetsToShow = $$.filterTargetsToShow($$.data.targets);
+        var mouse, closest, sameXData, selectedData;
+
+        if ($$.dragging) {
+            return;
+        } // do nothing when dragging
+        if ($$.hasArcType(targetsToShow)) {
+            return;
+        }
+
+        mouse = d3.mouse(this);
+        closest = $$.findClosestFromTargets(targetsToShow, mouse);
+
+        if ($$.mouseover && (!closest || closest.id !== $$.mouseover.id)) {
+            config.data_onmouseout.call($$.api, $$.mouseover);
+            $$.mouseover = undefined;
+        }
+
+        if (!closest) {
+            mouseout();
+            return;
+        }
+
+        if ($$.isScatterType(closest) || !config.tooltip_grouped) {
+            sameXData = [closest];
+        } else {
+            sameXData = $$.filterByX(targetsToShow, closest.x);
+        }
+
+        // show tooltip when cursor is close to some point
+        selectedData = sameXData.map(function (d) {
+            return $$.addName(d);
+        });
+        $$.showTooltip(selectedData, this);
+
+        // expand points
+        if (config.point_focus_expand_enabled) {
+            $$.expandCircles(closest.index, closest.id, true);
+        }
+        $$.expandBars(closest.index, closest.id, true);
+
+        // Show xgrid focus line
+        $$.showXGridFocus(selectedData);
+
+        // Show cursor as pointer if point is close to mouse position
+        if ($$.isBarType(closest.id) || $$.dist(closest, mouse) < config.point_sensitivity) {
+            $$.svg.select('.' + CLASS.eventRect).style('cursor', 'pointer');
+            if (!$$.mouseover) {
+                config.data_onmouseover.call($$.api, closest);
+                $$.mouseover = closest;
+            }
+        }
+    }).on('click', function () {
+        var targetsToShow = $$.filterTargetsToShow($$.data.targets);
+        var mouse, closest;
+        if ($$.hasArcType(targetsToShow)) {
+            return;
+        }
+
+        mouse = d3.mouse(this);
+        closest = $$.findClosestFromTargets(targetsToShow, mouse);
+        if (!closest) {
+            return;
+        }
+        // select if selection enabled
+        if ($$.isBarType(closest.id) || $$.dist(closest, mouse) < config.point_sensitivity) {
+            $$.main.selectAll('.' + CLASS.shapes + $$.getTargetSelectorSuffix(closest.id)).selectAll('.' + CLASS.shape + '-' + closest.index).each(function () {
+                if (config.data_selection_grouped || $$.isWithinShape(this, closest)) {
+                    $$.toggleShape(this, closest, closest.index);
+                    $$.config.data_onclick.call($$.api, closest, this);
+                }
+            });
+        }
+    }).call(config.data_selection_draggable && $$.drag ? d3.behavior.drag().origin(Object).on('drag', function () {
+        $$.drag(d3.mouse(this));
+    }).on('dragstart', function () {
+        $$.dragstart(d3.mouse(this));
+    }).on('dragend', function () {
+        $$.dragend();
+    }) : function () {});
+};
+c3_chart_internal_fn.dispatchEvent = function (type, index, mouse) {
+    var $$ = this,
+        selector = '.' + CLASS.eventRect + (!$$.isMultipleX() ? '-' + index : ''),
+        eventRect = $$.main.select(selector).node(),
+        box = eventRect.getBoundingClientRect(),
+        x = box.left + (mouse ? mouse[0] : 0),
+        y = box.top + (mouse ? mouse[1] : 0),
+        event = document.createEvent("MouseEvents");
+
+    event.initMouseEvent(type, true, true, window, 0, x, y, x, y, false, false, false, false, 0, null);
+    eventRect.dispatchEvent(event);
+};
+
+c3_chart_internal_fn.initLegend = function () {
+    var $$ = this;
+    $$.legendItemTextBox = {};
+    $$.legendHasRendered = false;
+    $$.legend = $$.svg.append("g").attr("transform", $$.getTranslate('legend'));
+    if (!$$.config.legend_show) {
+        $$.legend.style('visibility', 'hidden');
+        $$.hiddenLegendIds = $$.mapToIds($$.data.targets);
+        return;
+    }
+    // MEMO: call here to update legend box and tranlate for all
+    // MEMO: translate will be upated by this, so transform not needed in updateLegend()
+    $$.updateLegendWithDefaults();
+};
+c3_chart_internal_fn.updateLegendWithDefaults = function () {
+    var $$ = this;
+    $$.updateLegend($$.mapToIds($$.data.targets), { withTransform: false, withTransitionForTransform: false, withTransition: false });
+};
+c3_chart_internal_fn.updateSizeForLegend = function (legendHeight, legendWidth) {
+    var $$ = this,
+        config = $$.config,
+        insetLegendPosition = {
+        top: $$.isLegendTop ? $$.getCurrentPaddingTop() + config.legend_inset_y + 5.5 : $$.currentHeight - legendHeight - $$.getCurrentPaddingBottom() - config.legend_inset_y,
+        left: $$.isLegendLeft ? $$.getCurrentPaddingLeft() + config.legend_inset_x + 0.5 : $$.currentWidth - legendWidth - $$.getCurrentPaddingRight() - config.legend_inset_x + 0.5
+    };
+
+    $$.margin3 = {
+        top: $$.isLegendRight ? 0 : $$.isLegendInset ? insetLegendPosition.top : $$.currentHeight - legendHeight,
+        right: NaN,
+        bottom: 0,
+        left: $$.isLegendRight ? $$.currentWidth - legendWidth : $$.isLegendInset ? insetLegendPosition.left : 0
+    };
+};
+c3_chart_internal_fn.transformLegend = function (withTransition) {
+    var $$ = this;
+    (withTransition ? $$.legend.transition() : $$.legend).attr("transform", $$.getTranslate('legend'));
+};
+c3_chart_internal_fn.updateLegendStep = function (step) {
+    this.legendStep = step;
+};
+c3_chart_internal_fn.updateLegendItemWidth = function (w) {
+    this.legendItemWidth = w;
+};
+c3_chart_internal_fn.updateLegendItemHeight = function (h) {
+    this.legendItemHeight = h;
+};
+c3_chart_internal_fn.getLegendWidth = function () {
+    var $$ = this;
+    return $$.config.legend_show ? $$.isLegendRight || $$.isLegendInset ? $$.legendItemWidth * ($$.legendStep + 1) : $$.currentWidth : 0;
+};
+c3_chart_internal_fn.getLegendHeight = function () {
+    var $$ = this,
+        h = 0;
+    if ($$.config.legend_show) {
+        if ($$.isLegendRight) {
+            h = $$.currentHeight;
+        } else {
+            h = Math.max(20, $$.legendItemHeight) * ($$.legendStep + 1);
+        }
+    }
+    return h;
+};
+c3_chart_internal_fn.opacityForLegend = function (legendItem) {
+    return legendItem.classed(CLASS.legendItemHidden) ? null : 1;
+};
+c3_chart_internal_fn.opacityForUnfocusedLegend = function (legendItem) {
+    return legendItem.classed(CLASS.legendItemHidden) ? null : 0.3;
+};
+c3_chart_internal_fn.toggleFocusLegend = function (targetIds, focus) {
+    var $$ = this;
+    targetIds = $$.mapToTargetIds(targetIds);
+    $$.legend.selectAll('.' + CLASS.legendItem).filter(function (id) {
+        return targetIds.indexOf(id) >= 0;
+    }).classed(CLASS.legendItemFocused, focus).transition().duration(100).style('opacity', function () {
+        var opacity = focus ? $$.opacityForLegend : $$.opacityForUnfocusedLegend;
+        return opacity.call($$, $$.d3.select(this));
+    });
+};
+c3_chart_internal_fn.revertLegend = function () {
+    var $$ = this,
+        d3 = $$.d3;
+    $$.legend.selectAll('.' + CLASS.legendItem).classed(CLASS.legendItemFocused, false).transition().duration(100).style('opacity', function () {
+        return $$.opacityForLegend(d3.select(this));
+    });
+};
+c3_chart_internal_fn.showLegend = function (targetIds) {
+    var $$ = this,
+        config = $$.config;
+    if (!config.legend_show) {
+        config.legend_show = true;
+        $$.legend.style('visibility', 'visible');
+        if (!$$.legendHasRendered) {
+            $$.updateLegendWithDefaults();
+        }
+    }
+    $$.removeHiddenLegendIds(targetIds);
+    $$.legend.selectAll($$.selectorLegends(targetIds)).style('visibility', 'visible').transition().style('opacity', function () {
+        return $$.opacityForLegend($$.d3.select(this));
+    });
+};
+c3_chart_internal_fn.hideLegend = function (targetIds) {
+    var $$ = this,
+        config = $$.config;
+    if (config.legend_show && isEmpty(targetIds)) {
+        config.legend_show = false;
+        $$.legend.style('visibility', 'hidden');
+    }
+    $$.addHiddenLegendIds(targetIds);
+    $$.legend.selectAll($$.selectorLegends(targetIds)).style('opacity', 0).style('visibility', 'hidden');
+};
+c3_chart_internal_fn.clearLegendItemTextBoxCache = function () {
+    this.legendItemTextBox = {};
+};
+c3_chart_internal_fn.updateLegend = function (targetIds, options, transitions) {
+    var $$ = this,
+        config = $$.config;
+    var xForLegend, xForLegendText, xForLegendRect, yForLegend, yForLegendText, yForLegendRect, x1ForLegendTile, x2ForLegendTile, yForLegendTile;
+    var paddingTop = 4,
+        paddingRight = 10,
+        maxWidth = 0,
+        maxHeight = 0,
+        posMin = 10,
+        tileWidth = config.legend_item_tile_width + 5;
+    var l,
+        totalLength = 0,
+        offsets = {},
+        widths = {},
+        heights = {},
+        margins = [0],
+        steps = {},
+        step = 0;
+    var withTransition, withTransitionForTransform;
+    var texts, rects, tiles, background;
+
+    // Skip elements when their name is set to null
+    targetIds = targetIds.filter(function (id) {
+        return !isDefined(config.data_names[id]) || config.data_names[id] !== null;
+    });
+
+    options = options || {};
+    withTransition = getOption(options, "withTransition", true);
+    withTransitionForTransform = getOption(options, "withTransitionForTransform", true);
+
+    function getTextBox(textElement, id) {
+        if (!$$.legendItemTextBox[id]) {
+            $$.legendItemTextBox[id] = $$.getTextRect(textElement.textContent, CLASS.legendItem, textElement);
+        }
+        return $$.legendItemTextBox[id];
+    }
+
+    function updatePositions(textElement, id, index) {
+        var reset = index === 0,
+            isLast = index === targetIds.length - 1,
+            box = getTextBox(textElement, id),
+            itemWidth = box.width + tileWidth + (isLast && !($$.isLegendRight || $$.isLegendInset) ? 0 : paddingRight) + config.legend_padding,
+            itemHeight = box.height + paddingTop,
+            itemLength = $$.isLegendRight || $$.isLegendInset ? itemHeight : itemWidth,
+            areaLength = $$.isLegendRight || $$.isLegendInset ? $$.getLegendHeight() : $$.getLegendWidth(),
+            margin,
+            maxLength;
+
+        // MEMO: care about condifion of step, totalLength
+        function updateValues(id, withoutStep) {
+            if (!withoutStep) {
+                margin = (areaLength - totalLength - itemLength) / 2;
+                if (margin < posMin) {
+                    margin = (areaLength - itemLength) / 2;
+                    totalLength = 0;
+                    step++;
+                }
+            }
+            steps[id] = step;
+            margins[step] = $$.isLegendInset ? 10 : margin;
+            offsets[id] = totalLength;
+            totalLength += itemLength;
+        }
+
+        if (reset) {
+            totalLength = 0;
+            step = 0;
+            maxWidth = 0;
+            maxHeight = 0;
+        }
+
+        if (config.legend_show && !$$.isLegendToShow(id)) {
+            widths[id] = heights[id] = steps[id] = offsets[id] = 0;
+            return;
+        }
+
+        widths[id] = itemWidth;
+        heights[id] = itemHeight;
+
+        if (!maxWidth || itemWidth >= maxWidth) {
+            maxWidth = itemWidth;
+        }
+        if (!maxHeight || itemHeight >= maxHeight) {
+            maxHeight = itemHeight;
+        }
+        maxLength = $$.isLegendRight || $$.isLegendInset ? maxHeight : maxWidth;
+
+        if (config.legend_equally) {
+            Object.keys(widths).forEach(function (id) {
+                widths[id] = maxWidth;
+            });
+            Object.keys(heights).forEach(function (id) {
+                heights[id] = maxHeight;
+            });
+            margin = (areaLength - maxLength * targetIds.length) / 2;
+            if (margin < posMin) {
+                totalLength = 0;
+                step = 0;
+                targetIds.forEach(function (id) {
+                    updateValues(id);
+                });
+            } else {
+                updateValues(id, true);
+            }
+        } else {
+            updateValues(id);
+        }
+    }
+
+    if ($$.isLegendInset) {
+        step = config.legend_inset_step ? config.legend_inset_step : targetIds.length;
+        $$.updateLegendStep(step);
+    }
+
+    if ($$.isLegendRight) {
+        xForLegend = function xForLegend(id) {
+            return maxWidth * steps[id];
+        };
+        yForLegend = function yForLegend(id) {
+            return margins[steps[id]] + offsets[id];
+        };
+    } else if ($$.isLegendInset) {
+        xForLegend = function xForLegend(id) {
+            return maxWidth * steps[id] + 10;
+        };
+        yForLegend = function yForLegend(id) {
+            return margins[steps[id]] + offsets[id];
+        };
+    } else {
+        xForLegend = function xForLegend(id) {
+            return margins[steps[id]] + offsets[id];
+        };
+        yForLegend = function yForLegend(id) {
+            return maxHeight * steps[id];
+        };
+    }
+    xForLegendText = function xForLegendText(id, i) {
+        return xForLegend(id, i) + 4 + config.legend_item_tile_width;
+    };
+    yForLegendText = function yForLegendText(id, i) {
+        return yForLegend(id, i) + 9;
+    };
+    xForLegendRect = function xForLegendRect(id, i) {
+        return xForLegend(id, i);
+    };
+    yForLegendRect = function yForLegendRect(id, i) {
+        return yForLegend(id, i) - 5;
+    };
+    x1ForLegendTile = function x1ForLegendTile(id, i) {
+        return xForLegend(id, i) - 2;
+    };
+    x2ForLegendTile = function x2ForLegendTile(id, i) {
+        return xForLegend(id, i) - 2 + config.legend_item_tile_width;
+    };
+    yForLegendTile = function yForLegendTile(id, i) {
+        return yForLegend(id, i) + 4;
+    };
+
+    // Define g for legend area
+    l = $$.legend.selectAll('.' + CLASS.legendItem).data(targetIds).enter().append('g').attr('class', function (id) {
+        return $$.generateClass(CLASS.legendItem, id);
+    }).style('visibility', function (id) {
+        return $$.isLegendToShow(id) ? 'visible' : 'hidden';
+    }).style('cursor', 'pointer').on('click', function (id) {
+        if (config.legend_item_onclick) {
+            config.legend_item_onclick.call($$, id);
+        } else {
+            if ($$.d3.event.altKey) {
+                $$.api.hide();
+                $$.api.show(id);
+            } else {
+                $$.api.toggle(id);
+                $$.isTargetToShow(id) ? $$.api.focus(id) : $$.api.revert();
+            }
+        }
+    }).on('mouseover', function (id) {
+        if (config.legend_item_onmouseover) {
+            config.legend_item_onmouseover.call($$, id);
+        } else {
+            $$.d3.select(this).classed(CLASS.legendItemFocused, true);
+            if (!$$.transiting && $$.isTargetToShow(id)) {
+                $$.api.focus(id);
+            }
+        }
+    }).on('mouseout', function (id) {
+        if (config.legend_item_onmouseout) {
+            config.legend_item_onmouseout.call($$, id);
+        } else {
+            $$.d3.select(this).classed(CLASS.legendItemFocused, false);
+            $$.api.revert();
+        }
+    });
+    l.append('text').text(function (id) {
+        return isDefined(config.data_names[id]) ? config.data_names[id] : id;
+    }).each(function (id, i) {
+        updatePositions(this, id, i);
+    }).style("pointer-events", "none").attr('x', $$.isLegendRight || $$.isLegendInset ? xForLegendText : -200).attr('y', $$.isLegendRight || $$.isLegendInset ? -200 : yForLegendText);
+    l.append('rect').attr("class", CLASS.legendItemEvent).style('fill-opacity', 0).attr('x', $$.isLegendRight || $$.isLegendInset ? xForLegendRect : -200).attr('y', $$.isLegendRight || $$.isLegendInset ? -200 : yForLegendRect);
+    l.append('line').attr('class', CLASS.legendItemTile).style('stroke', $$.color).style("pointer-events", "none").attr('x1', $$.isLegendRight || $$.isLegendInset ? x1ForLegendTile : -200).attr('y1', $$.isLegendRight || $$.isLegendInset ? -200 : yForLegendTile).attr('x2', $$.isLegendRight || $$.isLegendInset ? x2ForLegendTile : -200).attr('y2', $$.isLegendRight || $$.isLegendInset ? -200 : yForLegendTile).attr('stroke-width', config.legend_item_tile_height);
+
+    // Set background for inset legend
+    background = $$.legend.select('.' + CLASS.legendBackground + ' rect');
+    if ($$.isLegendInset && maxWidth > 0 && background.size() === 0) {
+        background = $$.legend.insert('g', '.' + CLASS.legendItem).attr("class", CLASS.legendBackground).append('rect');
+    }
+
+    texts = $$.legend.selectAll('text').data(targetIds).text(function (id) {
+        return isDefined(config.data_names[id]) ? config.data_names[id] : id;
+    } // MEMO: needed for update
+    ).each(function (id, i) {
+        updatePositions(this, id, i);
+    });
+    (withTransition ? texts.transition() : texts).attr('x', xForLegendText).attr('y', yForLegendText);
+
+    rects = $$.legend.selectAll('rect.' + CLASS.legendItemEvent).data(targetIds);
+    (withTransition ? rects.transition() : rects).attr('width', function (id) {
+        return widths[id];
+    }).attr('height', function (id) {
+        return heights[id];
+    }).attr('x', xForLegendRect).attr('y', yForLegendRect);
+
+    tiles = $$.legend.selectAll('line.' + CLASS.legendItemTile).data(targetIds);
+    (withTransition ? tiles.transition() : tiles).style('stroke', $$.color).attr('x1', x1ForLegendTile).attr('y1', yForLegendTile).attr('x2', x2ForLegendTile).attr('y2', yForLegendTile);
+
+    if (background) {
+        (withTransition ? background.transition() : background).attr('height', $$.getLegendHeight() - 12).attr('width', maxWidth * (step + 1) + 10);
+    }
+
+    // toggle legend state
+    $$.legend.selectAll('.' + CLASS.legendItem).classed(CLASS.legendItemHidden, function (id) {
+        return !$$.isTargetToShow(id);
+    });
+
+    // Update all to reflect change of legend
+    $$.updateLegendItemWidth(maxWidth);
+    $$.updateLegendItemHeight(maxHeight);
+    $$.updateLegendStep(step);
+    // Update size and scale
+    $$.updateSizes();
+    $$.updateScales();
+    $$.updateSvgSize();
+    // Update g positions
+    $$.transformAll(withTransitionForTransform, transitions);
+    $$.legendHasRendered = true;
+};
+
+c3_chart_internal_fn.initRegion = function () {
+    var $$ = this;
+    $$.region = $$.main.append('g').attr("clip-path", $$.clipPath).attr("class", CLASS.regions);
+};
+c3_chart_internal_fn.updateRegion = function (duration) {
+    var $$ = this,
+        config = $$.config;
+
+    // hide if arc type
+    $$.region.style('visibility', $$.hasArcType() ? 'hidden' : 'visible');
+
+    $$.mainRegion = $$.main.select('.' + CLASS.regions).selectAll('.' + CLASS.region).data(config.regions);
+    $$.mainRegion.enter().append('g').append('rect').style("fill-opacity", 0);
+    $$.mainRegion.attr('class', $$.classRegion.bind($$));
+    $$.mainRegion.exit().transition().duration(duration).style("opacity", 0).remove();
+};
+c3_chart_internal_fn.redrawRegion = function (withTransition) {
+    var $$ = this,
+        regions = $$.mainRegion.selectAll('rect').each(function () {
+        // data is binded to g and it's not transferred to rect (child node) automatically,
+        // then data of each rect has to be updated manually.
+        // TODO: there should be more efficient way to solve this?
+        var parentData = $$.d3.select(this.parentNode).datum();
+        $$.d3.select(this).datum(parentData);
+    }),
+        x = $$.regionX.bind($$),
+        y = $$.regionY.bind($$),
+        w = $$.regionWidth.bind($$),
+        h = $$.regionHeight.bind($$);
+    return [(withTransition ? regions.transition() : regions).attr("x", x).attr("y", y).attr("width", w).attr("height", h).style("fill-opacity", function (d) {
+        return isValue(d.opacity) ? d.opacity : 0.1;
+    })];
+};
+c3_chart_internal_fn.regionX = function (d) {
+    var $$ = this,
+        config = $$.config,
+        xPos,
+        yScale = d.axis === 'y' ? $$.y : $$.y2;
+    if (d.axis === 'y' || d.axis === 'y2') {
+        xPos = config.axis_rotated ? 'start' in d ? yScale(d.start) : 0 : 0;
+    } else {
+        xPos = config.axis_rotated ? 0 : 'start' in d ? $$.x($$.isTimeSeries() ? $$.parseDate(d.start) : d.start) : 0;
+    }
+    return xPos;
+};
+c3_chart_internal_fn.regionY = function (d) {
+    var $$ = this,
+        config = $$.config,
+        yPos,
+        yScale = d.axis === 'y' ? $$.y : $$.y2;
+    if (d.axis === 'y' || d.axis === 'y2') {
+        yPos = config.axis_rotated ? 0 : 'end' in d ? yScale(d.end) : 0;
+    } else {
+        yPos = config.axis_rotated ? 'start' in d ? $$.x($$.isTimeSeries() ? $$.parseDate(d.start) : d.start) : 0 : 0;
+    }
+    return yPos;
+};
+c3_chart_internal_fn.regionWidth = function (d) {
+    var $$ = this,
+        config = $$.config,
+        start = $$.regionX(d),
+        end,
+        yScale = d.axis === 'y' ? $$.y : $$.y2;
+    if (d.axis === 'y' || d.axis === 'y2') {
+        end = config.axis_rotated ? 'end' in d ? yScale(d.end) : $$.width : $$.width;
+    } else {
+        end = config.axis_rotated ? $$.width : 'end' in d ? $$.x($$.isTimeSeries() ? $$.parseDate(d.end) : d.end) : $$.width;
+    }
+    return end < start ? 0 : end - start;
+};
+c3_chart_internal_fn.regionHeight = function (d) {
+    var $$ = this,
+        config = $$.config,
+        start = this.regionY(d),
+        end,
+        yScale = d.axis === 'y' ? $$.y : $$.y2;
+    if (d.axis === 'y' || d.axis === 'y2') {
+        end = config.axis_rotated ? $$.height : 'start' in d ? yScale(d.start) : $$.height;
+    } else {
+        end = config.axis_rotated ? 'end' in d ? $$.x($$.isTimeSeries() ? $$.parseDate(d.end) : d.end) : $$.height : $$.height;
+    }
+    return end < start ? 0 : end - start;
+};
+c3_chart_internal_fn.isRegionOnX = function (d) {
+    return !d.axis || d.axis === 'x';
+};
+
+c3_chart_internal_fn.getScale = function (min, max, forTimeseries) {
+    return (forTimeseries ? this.d3.time.scale() : this.d3.scale.linear()).range([min, max]);
+};
+c3_chart_internal_fn.getX = function (min, max, domain, offset) {
+    var $$ = this,
+        scale = $$.getScale(min, max, $$.isTimeSeries()),
+        _scale = domain ? scale.domain(domain) : scale,
+        key;
+    // Define customized scale if categorized axis
+    if ($$.isCategorized()) {
+        offset = offset || function () {
+            return 0;
+        };
+        scale = function scale(d, raw) {
+            var v = _scale(d) + offset(d);
+            return raw ? v : Math.ceil(v);
+        };
+    } else {
+        scale = function scale(d, raw) {
+            var v = _scale(d);
+            return raw ? v : Math.ceil(v);
+        };
+    }
+    // define functions
+    for (key in _scale) {
+        scale[key] = _scale[key];
+    }
+    scale.orgDomain = function () {
+        return _scale.domain();
+    };
+    // define custom domain() for categorized axis
+    if ($$.isCategorized()) {
+        scale.domain = function (domain) {
+            if (!arguments.length) {
+                domain = this.orgDomain();
+                return [domain[0], domain[1] + 1];
+            }
+            _scale.domain(domain);
+            return scale;
+        };
+    }
+    return scale;
+};
+c3_chart_internal_fn.getY = function (min, max, domain) {
+    var scale = this.getScale(min, max, this.isTimeSeriesY());
+    if (domain) {
+        scale.domain(domain);
+    }
+    return scale;
+};
+c3_chart_internal_fn.getYScale = function (id) {
+    return this.axis.getId(id) === 'y2' ? this.y2 : this.y;
+};
+c3_chart_internal_fn.getSubYScale = function (id) {
+    return this.axis.getId(id) === 'y2' ? this.subY2 : this.subY;
+};
+c3_chart_internal_fn.updateScales = function () {
+    var $$ = this,
+        config = $$.config,
+        forInit = !$$.x;
+    // update edges
+    $$.xMin = config.axis_rotated ? 1 : 0;
+    $$.xMax = config.axis_rotated ? $$.height : $$.width;
+    $$.yMin = config.axis_rotated ? 0 : $$.height;
+    $$.yMax = config.axis_rotated ? $$.width : 1;
+    $$.subXMin = $$.xMin;
+    $$.subXMax = $$.xMax;
+    $$.subYMin = config.axis_rotated ? 0 : $$.height2;
+    $$.subYMax = config.axis_rotated ? $$.width2 : 1;
+    // update scales
+    $$.x = $$.getX($$.xMin, $$.xMax, forInit ? undefined : $$.x.orgDomain(), function () {
+        return $$.xAxis.tickOffset();
+    });
+    $$.y = $$.getY($$.yMin, $$.yMax, forInit ? config.axis_y_default : $$.y.domain());
+    $$.y2 = $$.getY($$.yMin, $$.yMax, forInit ? config.axis_y2_default : $$.y2.domain());
+    $$.subX = $$.getX($$.xMin, $$.xMax, $$.orgXDomain, function (d) {
+        return d % 1 ? 0 : $$.subXAxis.tickOffset();
+    });
+    $$.subY = $$.getY($$.subYMin, $$.subYMax, forInit ? config.axis_y_default : $$.subY.domain());
+    $$.subY2 = $$.getY($$.subYMin, $$.subYMax, forInit ? config.axis_y2_default : $$.subY2.domain());
+    // update axes
+    $$.xAxisTickFormat = $$.axis.getXAxisTickFormat();
+    $$.xAxisTickValues = $$.axis.getXAxisTickValues();
+    $$.yAxisTickValues = $$.axis.getYAxisTickValues();
+    $$.y2AxisTickValues = $$.axis.getY2AxisTickValues();
+
+    $$.xAxis = $$.axis.getXAxis($$.x, $$.xOrient, $$.xAxisTickFormat, $$.xAxisTickValues, config.axis_x_tick_outer);
+    $$.subXAxis = $$.axis.getXAxis($$.subX, $$.subXOrient, $$.xAxisTickFormat, $$.xAxisTickValues, config.axis_x_tick_outer);
+    $$.yAxis = $$.axis.getYAxis($$.y, $$.yOrient, config.axis_y_tick_format, $$.yAxisTickValues, config.axis_y_tick_outer);
+    $$.y2Axis = $$.axis.getYAxis($$.y2, $$.y2Orient, config.axis_y2_tick_format, $$.y2AxisTickValues, config.axis_y2_tick_outer);
+
+    // Set initialized scales to brush and zoom
+    if (!forInit) {
+        if ($$.brush) {
+            $$.brush.scale($$.subX);
+        }
+        if (config.zoom_enabled) {
+            $$.zoom.scale($$.x);
+        }
+    }
+    // update for arc
+    if ($$.updateArc) {
+        $$.updateArc();
+    }
+};
+
+c3_chart_internal_fn.selectPoint = function (target, d, i) {
+    var $$ = this,
+        config = $$.config,
+        cx = (config.axis_rotated ? $$.circleY : $$.circleX).bind($$),
+        cy = (config.axis_rotated ? $$.circleX : $$.circleY).bind($$),
+        r = $$.pointSelectR.bind($$);
+    config.data_onselected.call($$.api, d, target.node());
+    // add selected-circle on low layer g
+    $$.main.select('.' + CLASS.selectedCircles + $$.getTargetSelectorSuffix(d.id)).selectAll('.' + CLASS.selectedCircle + '-' + i).data([d]).enter().append('circle').attr("class", function () {
+        return $$.generateClass(CLASS.selectedCircle, i);
+    }).attr("cx", cx).attr("cy", cy).attr("stroke", function () {
+        return $$.color(d);
+    }).attr("r", function (d) {
+        return $$.pointSelectR(d) * 1.4;
+    }).transition().duration(100).attr("r", r);
+};
+c3_chart_internal_fn.unselectPoint = function (target, d, i) {
+    var $$ = this;
+    $$.config.data_onunselected.call($$.api, d, target.node());
+    // remove selected-circle from low layer g
+    $$.main.select('.' + CLASS.selectedCircles + $$.getTargetSelectorSuffix(d.id)).selectAll('.' + CLASS.selectedCircle + '-' + i).transition().duration(100).attr('r', 0).remove();
+};
+c3_chart_internal_fn.togglePoint = function (selected, target, d, i) {
+    selected ? this.selectPoint(target, d, i) : this.unselectPoint(target, d, i);
+};
+c3_chart_internal_fn.selectPath = function (target, d) {
+    var $$ = this;
+    $$.config.data_onselected.call($$, d, target.node());
+    if ($$.config.interaction_brighten) {
+        target.transition().duration(100).style("fill", function () {
+            return $$.d3.rgb($$.color(d)).brighter(0.75);
+        });
+    }
+};
+c3_chart_internal_fn.unselectPath = function (target, d) {
+    var $$ = this;
+    $$.config.data_onunselected.call($$, d, target.node());
+    if ($$.config.interaction_brighten) {
+        target.transition().duration(100).style("fill", function () {
+            return $$.color(d);
+        });
+    }
+};
+c3_chart_internal_fn.togglePath = function (selected, target, d, i) {
+    selected ? this.selectPath(target, d, i) : this.unselectPath(target, d, i);
+};
+c3_chart_internal_fn.getToggle = function (that, d) {
+    var $$ = this,
+        toggle;
+    if (that.nodeName === 'circle') {
+        if ($$.isStepType(d)) {
+            // circle is hidden in step chart, so treat as within the click area
+            toggle = function toggle() {}; // TODO: how to select step chart?
+        } else {
+            toggle = $$.togglePoint;
+        }
+    } else if (that.nodeName === 'path') {
+        toggle = $$.togglePath;
+    }
+    return toggle;
+};
+c3_chart_internal_fn.toggleShape = function (that, d, i) {
+    var $$ = this,
+        d3 = $$.d3,
+        config = $$.config,
+        shape = d3.select(that),
+        isSelected = shape.classed(CLASS.SELECTED),
+        toggle = $$.getToggle(that, d).bind($$);
+
+    if (config.data_selection_enabled && config.data_selection_isselectable(d)) {
+        if (!config.data_selection_multiple) {
+            $$.main.selectAll('.' + CLASS.shapes + (config.data_selection_grouped ? $$.getTargetSelectorSuffix(d.id) : "")).selectAll('.' + CLASS.shape).each(function (d, i) {
+                var shape = d3.select(this);
+                if (shape.classed(CLASS.SELECTED)) {
+                    toggle(false, shape.classed(CLASS.SELECTED, false), d, i);
+                }
+            });
+        }
+        shape.classed(CLASS.SELECTED, !isSelected);
+        toggle(!isSelected, shape, d, i);
+    }
+};
+
+c3_chart_internal_fn.initBar = function () {
+    var $$ = this;
+    $$.main.select('.' + CLASS.chart).append("g").attr("class", CLASS.chartBars);
+};
+c3_chart_internal_fn.updateTargetsForBar = function (targets) {
+    var $$ = this,
+        config = $$.config,
+        mainBarUpdate,
+        mainBarEnter,
+        classChartBar = $$.classChartBar.bind($$),
+        classBars = $$.classBars.bind($$),
+        classFocus = $$.classFocus.bind($$);
+    mainBarUpdate = $$.main.select('.' + CLASS.chartBars).selectAll('.' + CLASS.chartBar).data(targets).attr('class', function (d) {
+        return classChartBar(d) + classFocus(d);
+    });
+    mainBarEnter = mainBarUpdate.enter().append('g').attr('class', classChartBar).style("pointer-events", "none");
+    // Bars for each data
+    mainBarEnter.append('g').attr("class", classBars).style("cursor", function (d) {
+        return config.data_selection_isselectable(d) ? "pointer" : null;
+    });
+};
+c3_chart_internal_fn.updateBar = function (durationForExit) {
+    var $$ = this,
+        barData = $$.barData.bind($$),
+        classBar = $$.classBar.bind($$),
+        initialOpacity = $$.initialOpacity.bind($$),
+        color = function color(d) {
+        return $$.color(d.id);
+    };
+    $$.mainBar = $$.main.selectAll('.' + CLASS.bars).selectAll('.' + CLASS.bar).data(barData);
+    $$.mainBar.enter().append('path').attr("class", classBar).style("stroke", color).style("fill", color);
+    $$.mainBar.style("opacity", initialOpacity);
+    $$.mainBar.exit().transition().duration(durationForExit).remove();
+};
+c3_chart_internal_fn.redrawBar = function (drawBar, withTransition) {
+    return [(withTransition ? this.mainBar.transition(Math.random().toString()) : this.mainBar).attr('d', drawBar).style("stroke", this.color).style("fill", this.color).style("opacity", 1)];
+};
+c3_chart_internal_fn.getBarW = function (axis, barTargetsNum) {
+    var $$ = this,
+        config = $$.config,
+        w = typeof config.bar_width === 'number' ? config.bar_width : barTargetsNum ? axis.tickInterval() * config.bar_width_ratio / barTargetsNum : 0;
+    return config.bar_width_max && w > config.bar_width_max ? config.bar_width_max : w;
+};
+c3_chart_internal_fn.getBars = function (i, id) {
+    var $$ = this;
+    return (id ? $$.main.selectAll('.' + CLASS.bars + $$.getTargetSelectorSuffix(id)) : $$.main).selectAll('.' + CLASS.bar + (isValue(i) ? '-' + i : ''));
+};
+c3_chart_internal_fn.expandBars = function (i, id, reset) {
+    var $$ = this;
+    if (reset) {
+        $$.unexpandBars();
+    }
+    $$.getBars(i, id).classed(CLASS.EXPANDED, true);
+};
+c3_chart_internal_fn.unexpandBars = function (i) {
+    var $$ = this;
+    $$.getBars(i).classed(CLASS.EXPANDED, false);
+};
+c3_chart_internal_fn.generateDrawBar = function (barIndices, isSub) {
+    var $$ = this,
+        config = $$.config,
+        getPoints = $$.generateGetBarPoints(barIndices, isSub);
+    return function (d, i) {
+        // 4 points that make a bar
+        var points = getPoints(d, i);
+
+        // switch points if axis is rotated, not applicable for sub chart
+        var indexX = config.axis_rotated ? 1 : 0;
+        var indexY = config.axis_rotated ? 0 : 1;
+
+        var path = 'M ' + points[0][indexX] + ',' + points[0][indexY] + ' ' + 'L' + points[1][indexX] + ',' + points[1][indexY] + ' ' + 'L' + points[2][indexX] + ',' + points[2][indexY] + ' ' + 'L' + points[3][indexX] + ',' + points[3][indexY] + ' ' + 'z';
+
+        return path;
+    };
+};
+c3_chart_internal_fn.generateGetBarPoints = function (barIndices, isSub) {
+    var $$ = this,
+        axis = isSub ? $$.subXAxis : $$.xAxis,
+        barTargetsNum = barIndices.__max__ + 1,
+        barW = $$.getBarW(axis, barTargetsNum),
+        barX = $$.getShapeX(barW, barTargetsNum, barIndices, !!isSub),
+        barY = $$.getShapeY(!!isSub),
+        barOffset = $$.getShapeOffset($$.isBarType, barIndices, !!isSub),
+        barSpaceOffset = barW * ($$.config.bar_space / 2),
+        yScale = isSub ? $$.getSubYScale : $$.getYScale;
+    return function (d, i) {
+        var y0 = yScale.call($$, d.id)(0),
+            offset = barOffset(d, i) || y0,
+            // offset is for stacked bar chart
+        posX = barX(d),
+            posY = barY(d);
+        // fix posY not to overflow opposite quadrant
+        if ($$.config.axis_rotated) {
+            if (0 < d.value && posY < y0 || d.value < 0 && y0 < posY) {
+                posY = y0;
+            }
+        }
+        // 4 points that make a bar
+        return [[posX + barSpaceOffset, offset], [posX + barSpaceOffset, posY - (y0 - offset)], [posX + barW - barSpaceOffset, posY - (y0 - offset)], [posX + barW - barSpaceOffset, offset]];
+    };
+};
+c3_chart_internal_fn.isWithinBar = function (that) {
+    var mouse = this.d3.mouse(that),
+        box = that.getBoundingClientRect(),
+        seg0 = that.pathSegList.getItem(0),
+        seg1 = that.pathSegList.getItem(1),
+        x = Math.min(seg0.x, seg1.x),
+        y = Math.min(seg0.y, seg1.y),
+        w = box.width,
+        h = box.height,
+        offset = 2,
+        sx = x - offset,
+        ex = x + w + offset,
+        sy = y + h + offset,
+        ey = y - offset;
+    return sx < mouse[0] && mouse[0] < ex && ey < mouse[1] && mouse[1] < sy;
+};
+
+c3_chart_internal_fn.getShapeIndices = function (typeFilter) {
+    var $$ = this,
+        config = $$.config,
+        indices = {},
+        i = 0,
+        j,
+        k;
+    $$.filterTargetsToShow($$.data.targets.filter(typeFilter, $$)).forEach(function (d) {
+        for (j = 0; j < config.data_groups.length; j++) {
+            if (config.data_groups[j].indexOf(d.id) < 0) {
+                continue;
+            }
+            for (k = 0; k < config.data_groups[j].length; k++) {
+                if (config.data_groups[j][k] in indices) {
+                    indices[d.id] = indices[config.data_groups[j][k]];
+                    break;
+                }
+            }
+        }
+        if (isUndefined(indices[d.id])) {
+            indices[d.id] = i++;
+        }
+    });
+    indices.__max__ = i - 1;
+    return indices;
+};
+c3_chart_internal_fn.getShapeX = function (offset, targetsNum, indices, isSub) {
+    var $$ = this,
+        scale = isSub ? $$.subX : $$.x;
+    return function (d) {
+        var index = d.id in indices ? indices[d.id] : 0;
+        return d.x || d.x === 0 ? scale(d.x) - offset * (targetsNum / 2 - index) : 0;
+    };
+};
+c3_chart_internal_fn.getShapeY = function (isSub) {
+    var $$ = this;
+    return function (d) {
+        var scale = isSub ? $$.getSubYScale(d.id) : $$.getYScale(d.id);
+        return scale(d.value);
+    };
+};
+c3_chart_internal_fn.getShapeOffset = function (typeFilter, indices, isSub) {
+    var $$ = this,
+        targets = $$.orderTargets($$.filterTargetsToShow($$.data.targets.filter(typeFilter, $$))),
+        targetIds = targets.map(function (t) {
+        return t.id;
+    });
+    return function (d, i) {
+        var scale = isSub ? $$.getSubYScale(d.id) : $$.getYScale(d.id),
+            y0 = scale(0),
+            offset = y0;
+        targets.forEach(function (t) {
+            var values = $$.isStepType(d) ? $$.convertValuesToStep(t.values) : t.values;
+            if (t.id === d.id || indices[t.id] !== indices[d.id]) {
+                return;
+            }
+            if (targetIds.indexOf(t.id) < targetIds.indexOf(d.id)) {
+                // check if the x values line up
+                if (typeof values[i] === 'undefined' || +values[i].x !== +d.x) {
+                    // "+" for timeseries
+                    // if not, try to find the value that does line up
+                    i = -1;
+                    values.forEach(function (v, j) {
+                        if (v.x === d.x) {
+                            i = j;
+                        }
+                    });
+                }
+                if (i in values && values[i].value * d.value >= 0) {
+                    offset += scale(values[i].value) - y0;
+                }
+            }
+        });
+        return offset;
+    };
+};
+c3_chart_internal_fn.isWithinShape = function (that, d) {
+    var $$ = this,
+        shape = $$.d3.select(that),
+        isWithin;
+    if (!$$.isTargetToShow(d.id)) {
+        isWithin = false;
+    } else if (that.nodeName === 'circle') {
+        isWithin = $$.isStepType(d) ? $$.isWithinStep(that, $$.getYScale(d.id)(d.value)) : $$.isWithinCircle(that, $$.pointSelectR(d) * 1.5);
+    } else if (that.nodeName === 'path') {
+        isWithin = shape.classed(CLASS.bar) ? $$.isWithinBar(that) : true;
+    }
+    return isWithin;
+};
+
+c3_chart_internal_fn.getInterpolate = function (d) {
+    var $$ = this,
+        interpolation = $$.isInterpolationType($$.config.spline_interpolation_type) ? $$.config.spline_interpolation_type : 'cardinal';
+    return $$.isSplineType(d) ? interpolation : $$.isStepType(d) ? $$.config.line_step_type : "linear";
+};
+
+c3_chart_internal_fn.initLine = function () {
+    var $$ = this;
+    $$.main.select('.' + CLASS.chart).append("g").attr("class", CLASS.chartLines);
+};
+c3_chart_internal_fn.updateTargetsForLine = function (targets) {
+    var $$ = this,
+        config = $$.config,
+        mainLineUpdate,
+        mainLineEnter,
+        classChartLine = $$.classChartLine.bind($$),
+        classLines = $$.classLines.bind($$),
+        classAreas = $$.classAreas.bind($$),
+        classCircles = $$.classCircles.bind($$),
+        classFocus = $$.classFocus.bind($$);
+    mainLineUpdate = $$.main.select('.' + CLASS.chartLines).selectAll('.' + CLASS.chartLine).data(targets).attr('class', function (d) {
+        return classChartLine(d) + classFocus(d);
+    });
+    mainLineEnter = mainLineUpdate.enter().append('g').attr('class', classChartLine).style('opacity', 0).style("pointer-events", "none");
+    // Lines for each data
+    mainLineEnter.append('g').attr("class", classLines);
+    // Areas
+    mainLineEnter.append('g').attr('class', classAreas);
+    // Circles for each data point on lines
+    mainLineEnter.append('g').attr("class", function (d) {
+        return $$.generateClass(CLASS.selectedCircles, d.id);
+    });
+    mainLineEnter.append('g').attr("class", classCircles).style("cursor", function (d) {
+        return config.data_selection_isselectable(d) ? "pointer" : null;
+    });
+    // Update date for selected circles
+    targets.forEach(function (t) {
+        $$.main.selectAll('.' + CLASS.selectedCircles + $$.getTargetSelectorSuffix(t.id)).selectAll('.' + CLASS.selectedCircle).each(function (d) {
+            d.value = t.values[d.index].value;
+        });
+    });
+    // MEMO: can not keep same color...
+    //mainLineUpdate.exit().remove();
+};
+c3_chart_internal_fn.updateLine = function (durationForExit) {
+    var $$ = this;
+    $$.mainLine = $$.main.selectAll('.' + CLASS.lines).selectAll('.' + CLASS.line).data($$.lineData.bind($$));
+    $$.mainLine.enter().append('path').attr('class', $$.classLine.bind($$)).style("stroke", $$.color);
+    $$.mainLine.style("opacity", $$.initialOpacity.bind($$)).style('shape-rendering', function (d) {
+        return $$.isStepType(d) ? 'crispEdges' : '';
+    }).attr('transform', null);
+    $$.mainLine.exit().transition().duration(durationForExit).style('opacity', 0).remove();
+};
+c3_chart_internal_fn.redrawLine = function (drawLine, withTransition) {
+    return [(withTransition ? this.mainLine.transition(Math.random().toString()) : this.mainLine).attr("d", drawLine).style("stroke", this.color).style("opacity", 1)];
+};
+c3_chart_internal_fn.generateDrawLine = function (lineIndices, isSub) {
+    var $$ = this,
+        config = $$.config,
+        line = $$.d3.svg.line(),
+        getPoints = $$.generateGetLinePoints(lineIndices, isSub),
+        yScaleGetter = isSub ? $$.getSubYScale : $$.getYScale,
+        xValue = function xValue(d) {
+        return (isSub ? $$.subxx : $$.xx).call($$, d);
+    },
+        yValue = function yValue(d, i) {
+        return config.data_groups.length > 0 ? getPoints(d, i)[0][1] : yScaleGetter.call($$, d.id)(d.value);
+    };
+
+    line = config.axis_rotated ? line.x(yValue).y(xValue) : line.x(xValue).y(yValue);
+    if (!config.line_connectNull) {
+        line = line.defined(function (d) {
+            return d.value != null;
+        });
+    }
+    return function (d) {
+        var values = config.line_connectNull ? $$.filterRemoveNull(d.values) : d.values,
+            x = isSub ? $$.x : $$.subX,
+            y = yScaleGetter.call($$, d.id),
+            x0 = 0,
+            y0 = 0,
+            path;
+        if ($$.isLineType(d)) {
+            if (config.data_regions[d.id]) {
+                path = $$.lineWithRegions(values, x, y, config.data_regions[d.id]);
+            } else {
+                if ($$.isStepType(d)) {
+                    values = $$.convertValuesToStep(values);
+                }
+                path = line.interpolate($$.getInterpolate(d))(values);
+            }
+        } else {
+            if (values[0]) {
+                x0 = x(values[0].x);
+                y0 = y(values[0].value);
+            }
+            path = config.axis_rotated ? "M " + y0 + " " + x0 : "M " + x0 + " " + y0;
+        }
+        return path ? path : "M 0 0";
+    };
+};
+c3_chart_internal_fn.generateGetLinePoints = function (lineIndices, isSub) {
+    // partial duplication of generateGetBarPoints
+    var $$ = this,
+        config = $$.config,
+        lineTargetsNum = lineIndices.__max__ + 1,
+        x = $$.getShapeX(0, lineTargetsNum, lineIndices, !!isSub),
+        y = $$.getShapeY(!!isSub),
+        lineOffset = $$.getShapeOffset($$.isLineType, lineIndices, !!isSub),
+        yScale = isSub ? $$.getSubYScale : $$.getYScale;
+    return function (d, i) {
+        var y0 = yScale.call($$, d.id)(0),
+            offset = lineOffset(d, i) || y0,
+            // offset is for stacked area chart
+        posX = x(d),
+            posY = y(d);
+        // fix posY not to overflow opposite quadrant
+        if (config.axis_rotated) {
+            if (0 < d.value && posY < y0 || d.value < 0 && y0 < posY) {
+                posY = y0;
+            }
+        }
+        // 1 point that marks the line position
+        return [[posX, posY - (y0 - offset)], [posX, posY - (y0 - offset)], // needed for compatibility
+        [posX, posY - (y0 - offset)], // needed for compatibility
+        [posX, posY - (y0 - offset)] // needed for compatibility
+        ];
+    };
+};
+
+c3_chart_internal_fn.lineWithRegions = function (d, x, y, _regions) {
+    var $$ = this,
+        config = $$.config,
+        prev = -1,
+        i,
+        j,
+        s = "M",
+        sWithRegion,
+        xp,
+        yp,
+        dx,
+        dy,
+        dd,
+        diff,
+        diffx2,
+        xOffset = $$.isCategorized() ? 0.5 : 0,
+        xValue,
+        yValue,
+        regions = [];
+
+    function isWithinRegions(x, regions) {
+        var i;
+        for (i = 0; i < regions.length; i++) {
+            if (regions[i].start < x && x <= regions[i].end) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    // Check start/end of regions
+    if (isDefined(_regions)) {
+        for (i = 0; i < _regions.length; i++) {
+            regions[i] = {};
+            if (isUndefined(_regions[i].start)) {
+                regions[i].start = d[0].x;
+            } else {
+                regions[i].start = $$.isTimeSeries() ? $$.parseDate(_regions[i].start) : _regions[i].start;
+            }
+            if (isUndefined(_regions[i].end)) {
+                regions[i].end = d[d.length - 1].x;
+            } else {
+                regions[i].end = $$.isTimeSeries() ? $$.parseDate(_regions[i].end) : _regions[i].end;
+            }
+        }
+    }
+
+    // Set scales
+    xValue = config.axis_rotated ? function (d) {
+        return y(d.value);
+    } : function (d) {
+        return x(d.x);
+    };
+    yValue = config.axis_rotated ? function (d) {
+        return x(d.x);
+    } : function (d) {
+        return y(d.value);
+    };
+
+    // Define svg generator function for region
+    function generateM(points) {
+        return 'M' + points[0][0] + ' ' + points[0][1] + ' ' + points[1][0] + ' ' + points[1][1];
+    }
+    if ($$.isTimeSeries()) {
+        sWithRegion = function sWithRegion(d0, d1, j, diff) {
+            var x0 = d0.x.getTime(),
+                x_diff = d1.x - d0.x,
+                xv0 = new Date(x0 + x_diff * j),
+                xv1 = new Date(x0 + x_diff * (j + diff)),
+                points;
+            if (config.axis_rotated) {
+                points = [[y(yp(j)), x(xv0)], [y(yp(j + diff)), x(xv1)]];
+            } else {
+                points = [[x(xv0), y(yp(j))], [x(xv1), y(yp(j + diff))]];
+            }
+            return generateM(points);
+        };
+    } else {
+        sWithRegion = function sWithRegion(d0, d1, j, diff) {
+            var points;
+            if (config.axis_rotated) {
+                points = [[y(yp(j), true), x(xp(j))], [y(yp(j + diff), true), x(xp(j + diff))]];
+            } else {
+                points = [[x(xp(j), true), y(yp(j))], [x(xp(j + diff), true), y(yp(j + diff))]];
+            }
+            return generateM(points);
+        };
+    }
+
+    // Generate
+    for (i = 0; i < d.length; i++) {
+
+        // Draw as normal
+        if (isUndefined(regions) || !isWithinRegions(d[i].x, regions)) {
+            s += " " + xValue(d[i]) + " " + yValue(d[i]);
+        }
+        // Draw with region // TODO: Fix for horizotal charts
+        else {
+                xp = $$.getScale(d[i - 1].x + xOffset, d[i].x + xOffset, $$.isTimeSeries());
+                yp = $$.getScale(d[i - 1].value, d[i].value);
+
+                dx = x(d[i].x) - x(d[i - 1].x);
+                dy = y(d[i].value) - y(d[i - 1].value);
+                dd = Math.sqrt(Math.pow(dx, 2) + Math.pow(dy, 2));
+                diff = 2 / dd;
+                diffx2 = diff * 2;
+
+                for (j = diff; j <= 1; j += diffx2) {
+                    s += sWithRegion(d[i - 1], d[i], j, diff);
+                }
+            }
+        prev = d[i].x;
+    }
+
+    return s;
+};
+
+c3_chart_internal_fn.updateArea = function (durationForExit) {
+    var $$ = this,
+        d3 = $$.d3;
+    $$.mainArea = $$.main.selectAll('.' + CLASS.areas).selectAll('.' + CLASS.area).data($$.lineData.bind($$));
+    $$.mainArea.enter().append('path').attr("class", $$.classArea.bind($$)).style("fill", $$.color).style("opacity", function () {
+        $$.orgAreaOpacity = +d3.select(this).style('opacity');return 0;
+    });
+    $$.mainArea.style("opacity", $$.orgAreaOpacity);
+    $$.mainArea.exit().transition().duration(durationForExit).style('opacity', 0).remove();
+};
+c3_chart_internal_fn.redrawArea = function (drawArea, withTransition) {
+    return [(withTransition ? this.mainArea.transition(Math.random().toString()) : this.mainArea).attr("d", drawArea).style("fill", this.color).style("opacity", this.orgAreaOpacity)];
+};
+c3_chart_internal_fn.generateDrawArea = function (areaIndices, isSub) {
+    var $$ = this,
+        config = $$.config,
+        area = $$.d3.svg.area(),
+        getPoints = $$.generateGetAreaPoints(areaIndices, isSub),
+        yScaleGetter = isSub ? $$.getSubYScale : $$.getYScale,
+        xValue = function xValue(d) {
+        return (isSub ? $$.subxx : $$.xx).call($$, d);
+    },
+        value0 = function value0(d, i) {
+        return config.data_groups.length > 0 ? getPoints(d, i)[0][1] : yScaleGetter.call($$, d.id)($$.getAreaBaseValue(d.id));
+    },
+        value1 = function value1(d, i) {
+        return config.data_groups.length > 0 ? getPoints(d, i)[1][1] : yScaleGetter.call($$, d.id)(d.value);
+    };
+
+    area = config.axis_rotated ? area.x0(value0).x1(value1).y(xValue) : area.x(xValue).y0(config.area_above ? 0 : value0).y1(value1);
+    if (!config.line_connectNull) {
+        area = area.defined(function (d) {
+            return d.value !== null;
+        });
+    }
+
+    return function (d) {
+        var values = config.line_connectNull ? $$.filterRemoveNull(d.values) : d.values,
+            x0 = 0,
+            y0 = 0,
+            path;
+        if ($$.isAreaType(d)) {
+            if ($$.isStepType(d)) {
+                values = $$.convertValuesToStep(values);
+            }
+            path = area.interpolate($$.getInterpolate(d))(values);
+        } else {
+            if (values[0]) {
+                x0 = $$.x(values[0].x);
+                y0 = $$.getYScale(d.id)(values[0].value);
+            }
+            path = config.axis_rotated ? "M " + y0 + " " + x0 : "M " + x0 + " " + y0;
+        }
+        return path ? path : "M 0 0";
+    };
+};
+c3_chart_internal_fn.getAreaBaseValue = function () {
+    return 0;
+};
+c3_chart_internal_fn.generateGetAreaPoints = function (areaIndices, isSub) {
+    // partial duplication of generateGetBarPoints
+    var $$ = this,
+        config = $$.config,
+        areaTargetsNum = areaIndices.__max__ + 1,
+        x = $$.getShapeX(0, areaTargetsNum, areaIndices, !!isSub),
+        y = $$.getShapeY(!!isSub),
+        areaOffset = $$.getShapeOffset($$.isAreaType, areaIndices, !!isSub),
+        yScale = isSub ? $$.getSubYScale : $$.getYScale;
+    return function (d, i) {
+        var y0 = yScale.call($$, d.id)(0),
+            offset = areaOffset(d, i) || y0,
+            // offset is for stacked area chart
+        posX = x(d),
+            posY = y(d);
+        // fix posY not to overflow opposite quadrant
+        if (config.axis_rotated) {
+            if (0 < d.value && posY < y0 || d.value < 0 && y0 < posY) {
+                posY = y0;
+            }
+        }
+        // 1 point that marks the area position
+        return [[posX, offset], [posX, posY - (y0 - offset)], [posX, posY - (y0 - offset)], // needed for compatibility
+        [posX, offset] // needed for compatibility
+        ];
+    };
+};
+
+c3_chart_internal_fn.updateCircle = function () {
+    var $$ = this;
+    $$.mainCircle = $$.main.selectAll('.' + CLASS.circles).selectAll('.' + CLASS.circle).data($$.lineOrScatterData.bind($$));
+    $$.mainCircle.enter().append("circle").attr("class", $$.classCircle.bind($$)).attr("r", $$.pointR.bind($$)).style("fill", $$.color);
+    $$.mainCircle.style("opacity", $$.initialOpacityForCircle.bind($$));
+    $$.mainCircle.exit().remove();
+};
+c3_chart_internal_fn.redrawCircle = function (cx, cy, withTransition) {
+    var selectedCircles = this.main.selectAll('.' + CLASS.selectedCircle);
+    return [(withTransition ? this.mainCircle.transition(Math.random().toString()) : this.mainCircle).style('opacity', this.opacityForCircle.bind(this)).style("fill", this.color).attr("cx", cx).attr("cy", cy), (withTransition ? selectedCircles.transition(Math.random().toString()) : selectedCircles).attr("cx", cx).attr("cy", cy)];
+};
+c3_chart_internal_fn.circleX = function (d) {
+    return d.x || d.x === 0 ? this.x(d.x) : null;
+};
+c3_chart_internal_fn.updateCircleY = function () {
+    var $$ = this,
+        lineIndices,
+        getPoints;
+    if ($$.config.data_groups.length > 0) {
+        lineIndices = $$.getShapeIndices($$.isLineType), getPoints = $$.generateGetLinePoints(lineIndices);
+        $$.circleY = function (d, i) {
+            return getPoints(d, i)[0][1];
+        };
+    } else {
+        $$.circleY = function (d) {
+            return $$.getYScale(d.id)(d.value);
+        };
+    }
+};
+c3_chart_internal_fn.getCircles = function (i, id) {
+    var $$ = this;
+    return (id ? $$.main.selectAll('.' + CLASS.circles + $$.getTargetSelectorSuffix(id)) : $$.main).selectAll('.' + CLASS.circle + (isValue(i) ? '-' + i : ''));
+};
+c3_chart_internal_fn.expandCircles = function (i, id, reset) {
+    var $$ = this,
+        r = $$.pointExpandedR.bind($$);
+    if (reset) {
+        $$.unexpandCircles();
+    }
+    $$.getCircles(i, id).classed(CLASS.EXPANDED, true).attr('r', r);
+};
+c3_chart_internal_fn.unexpandCircles = function (i) {
+    var $$ = this,
+        r = $$.pointR.bind($$);
+    $$.getCircles(i).filter(function () {
+        return $$.d3.select(this).classed(CLASS.EXPANDED);
+    }).classed(CLASS.EXPANDED, false).attr('r', r);
+};
+c3_chart_internal_fn.pointR = function (d) {
+    var $$ = this,
+        config = $$.config;
+    return $$.isStepType(d) ? 0 : isFunction(config.point_r) ? config.point_r(d) : config.point_r;
+};
+c3_chart_internal_fn.pointExpandedR = function (d) {
+    var $$ = this,
+        config = $$.config;
+    if (config.point_focus_expand_enabled) {
+        return isFunction(config.point_focus_expand_r) ? config.point_focus_expand_r(d) : config.point_focus_expand_r ? config.point_focus_expand_r : $$.pointR(d) * 1.75;
+    } else {
+        return $$.pointR(d);
+    }
+};
+c3_chart_internal_fn.pointSelectR = function (d) {
+    var $$ = this,
+        config = $$.config;
+    return isFunction(config.point_select_r) ? config.point_select_r(d) : config.point_select_r ? config.point_select_r : $$.pointR(d) * 4;
+};
+c3_chart_internal_fn.isWithinCircle = function (that, r) {
+    var d3 = this.d3,
+        mouse = d3.mouse(that),
+        d3_this = d3.select(that),
+        cx = +d3_this.attr("cx"),
+        cy = +d3_this.attr("cy");
+    return Math.sqrt(Math.pow(cx - mouse[0], 2) + Math.pow(cy - mouse[1], 2)) < r;
+};
+c3_chart_internal_fn.isWithinStep = function (that, y) {
+    return Math.abs(y - this.d3.mouse(that)[1]) < 30;
+};
+
+c3_chart_internal_fn.getCurrentWidth = function () {
+    var $$ = this,
+        config = $$.config;
+    return config.size_width ? config.size_width : $$.getParentWidth();
+};
+c3_chart_internal_fn.getCurrentHeight = function () {
+    var $$ = this,
+        config = $$.config,
+        h = config.size_height ? config.size_height : $$.getParentHeight();
+    return h > 0 ? h : 320 / ($$.hasType('gauge') && !config.gauge_fullCircle ? 2 : 1);
+};
+c3_chart_internal_fn.getCurrentPaddingTop = function () {
+    var $$ = this,
+        config = $$.config,
+        padding = isValue(config.padding_top) ? config.padding_top : 0;
+    if ($$.title && $$.title.node()) {
+        padding += $$.getTitlePadding();
+    }
+    return padding;
+};
+c3_chart_internal_fn.getCurrentPaddingBottom = function () {
+    var config = this.config;
+    return isValue(config.padding_bottom) ? config.padding_bottom : 0;
+};
+c3_chart_internal_fn.getCurrentPaddingLeft = function (withoutRecompute) {
+    var $$ = this,
+        config = $$.config;
+    if (isValue(config.padding_left)) {
+        return config.padding_left;
+    } else if (config.axis_rotated) {
+        return !config.axis_x_show ? 1 : Math.max(ceil10($$.getAxisWidthByAxisId('x', withoutRecompute)), 40);
+    } else if (!config.axis_y_show || config.axis_y_inner) {
+        // && !config.axis_rotated
+        return $$.axis.getYAxisLabelPosition().isOuter ? 30 : 1;
+    } else {
+        return ceil10($$.getAxisWidthByAxisId('y', withoutRecompute));
+    }
+};
+c3_chart_internal_fn.getCurrentPaddingRight = function () {
+    var $$ = this,
+        config = $$.config,
+        defaultPadding = 10,
+        legendWidthOnRight = $$.isLegendRight ? $$.getLegendWidth() + 20 : 0;
+    if (isValue(config.padding_right)) {
+        return config.padding_right + 1; // 1 is needed not to hide tick line
+    } else if (config.axis_rotated) {
+        return defaultPadding + legendWidthOnRight;
+    } else if (!config.axis_y2_show || config.axis_y2_inner) {
+        // && !config.axis_rotated
+        return 2 + legendWidthOnRight + ($$.axis.getY2AxisLabelPosition().isOuter ? 20 : 0);
+    } else {
+        return ceil10($$.getAxisWidthByAxisId('y2')) + legendWidthOnRight;
+    }
+};
+
+c3_chart_internal_fn.getParentRectValue = function (key) {
+    var parent = this.selectChart.node(),
+        v;
+    while (parent && parent.tagName !== 'BODY') {
+        try {
+            v = parent.getBoundingClientRect()[key];
+        } catch (e) {
+            if (key === 'width') {
+                // In IE in certain cases getBoundingClientRect
+                // will cause an "unspecified error"
+                v = parent.offsetWidth;
+            }
+        }
+        if (v) {
+            break;
+        }
+        parent = parent.parentNode;
+    }
+    return v;
+};
+c3_chart_internal_fn.getParentWidth = function () {
+    return this.getParentRectValue('width');
+};
+c3_chart_internal_fn.getParentHeight = function () {
+    var h = this.selectChart.style('height');
+    return h.indexOf('px') > 0 ? +h.replace('px', '') : 0;
+};
+
+c3_chart_internal_fn.getSvgLeft = function (withoutRecompute) {
+    var $$ = this,
+        config = $$.config,
+        hasLeftAxisRect = config.axis_rotated || !config.axis_rotated && !config.axis_y_inner,
+        leftAxisClass = config.axis_rotated ? CLASS.axisX : CLASS.axisY,
+        leftAxis = $$.main.select('.' + leftAxisClass).node(),
+        svgRect = leftAxis && hasLeftAxisRect ? leftAxis.getBoundingClientRect() : { right: 0 },
+        chartRect = $$.selectChart.node().getBoundingClientRect(),
+        hasArc = $$.hasArcType(),
+        svgLeft = svgRect.right - chartRect.left - (hasArc ? 0 : $$.getCurrentPaddingLeft(withoutRecompute));
+    return svgLeft > 0 ? svgLeft : 0;
+};
+
+c3_chart_internal_fn.getAxisWidthByAxisId = function (id, withoutRecompute) {
+    var $$ = this,
+        position = $$.axis.getLabelPositionById(id);
+    return $$.axis.getMaxTickWidth(id, withoutRecompute) + (position.isInner ? 20 : 40);
+};
+c3_chart_internal_fn.getHorizontalAxisHeight = function (axisId) {
+    var $$ = this,
+        config = $$.config,
+        h = 30;
+    if (axisId === 'x' && !config.axis_x_show) {
+        return 8;
+    }
+    if (axisId === 'x' && config.axis_x_height) {
+        return config.axis_x_height;
+    }
+    if (axisId === 'y' && !config.axis_y_show) {
+        return config.legend_show && !$$.isLegendRight && !$$.isLegendInset ? 10 : 1;
+    }
+    if (axisId === 'y2' && !config.axis_y2_show) {
+        return $$.rotated_padding_top;
+    }
+    // Calculate x axis height when tick rotated
+    if (axisId === 'x' && !config.axis_rotated && config.axis_x_tick_rotate) {
+        h = 30 + $$.axis.getMaxTickWidth(axisId) * Math.cos(Math.PI * (90 - config.axis_x_tick_rotate) / 180);
+    }
+    // Calculate y axis height when tick rotated
+    if (axisId === 'y' && config.axis_rotated && config.axis_y_tick_rotate) {
+        h = 30 + $$.axis.getMaxTickWidth(axisId) * Math.cos(Math.PI * (90 - config.axis_y_tick_rotate) / 180);
+    }
+    return h + ($$.axis.getLabelPositionById(axisId).isInner ? 0 : 10) + (axisId === 'y2' ? -10 : 0);
+};
+
+c3_chart_internal_fn.getEventRectWidth = function () {
+    return Math.max(0, this.xAxis.tickInterval());
+};
+
+c3_chart_internal_fn.initBrush = function () {
+    var $$ = this,
+        d3 = $$.d3;
+    $$.brush = d3.svg.brush().on("brush", function () {
+        $$.redrawForBrush();
+    });
+    $$.brush.update = function () {
+        if ($$.context) {
+            $$.context.select('.' + CLASS.brush).call(this);
+        }
+        return this;
+    };
+    $$.brush.scale = function (scale) {
+        return $$.config.axis_rotated ? this.y(scale) : this.x(scale);
+    };
+};
+c3_chart_internal_fn.initSubchart = function () {
+    var $$ = this,
+        config = $$.config,
+        context = $$.context = $$.svg.append("g").attr("transform", $$.getTranslate('context')),
+        visibility = config.subchart_show ? 'visible' : 'hidden';
+
+    context.style('visibility', visibility);
+
+    // Define g for chart area
+    context.append('g').attr("clip-path", $$.clipPathForSubchart).attr('class', CLASS.chart);
+
+    // Define g for bar chart area
+    context.select('.' + CLASS.chart).append("g").attr("class", CLASS.chartBars);
+
+    // Define g for line chart area
+    context.select('.' + CLASS.chart).append("g").attr("class", CLASS.chartLines);
+
+    // Add extent rect for Brush
+    context.append("g").attr("clip-path", $$.clipPath).attr("class", CLASS.brush).call($$.brush);
+
+    // ATTENTION: This must be called AFTER chart added
+    // Add Axis
+    $$.axes.subx = context.append("g").attr("class", CLASS.axisX).attr("transform", $$.getTranslate('subx')).attr("clip-path", config.axis_rotated ? "" : $$.clipPathForXAxis).style("visibility", config.subchart_axis_x_show ? visibility : 'hidden');
+};
+c3_chart_internal_fn.updateTargetsForSubchart = function (targets) {
+    var $$ = this,
+        context = $$.context,
+        config = $$.config,
+        contextLineEnter,
+        contextLineUpdate,
+        contextBarEnter,
+        contextBarUpdate,
+        classChartBar = $$.classChartBar.bind($$),
+        classBars = $$.classBars.bind($$),
+        classChartLine = $$.classChartLine.bind($$),
+        classLines = $$.classLines.bind($$),
+        classAreas = $$.classAreas.bind($$);
+
+    if (config.subchart_show) {
+        //-- Bar --//
+        contextBarUpdate = context.select('.' + CLASS.chartBars).selectAll('.' + CLASS.chartBar).data(targets).attr('class', classChartBar);
+        contextBarEnter = contextBarUpdate.enter().append('g').style('opacity', 0).attr('class', classChartBar);
+        // Bars for each data
+        contextBarEnter.append('g').attr("class", classBars);
+
+        //-- Line --//
+        contextLineUpdate = context.select('.' + CLASS.chartLines).selectAll('.' + CLASS.chartLine).data(targets).attr('class', classChartLine);
+        contextLineEnter = contextLineUpdate.enter().append('g').style('opacity', 0).attr('class', classChartLine);
+        // Lines for each data
+        contextLineEnter.append("g").attr("class", classLines);
+        // Area
+        contextLineEnter.append("g").attr("class", classAreas);
+
+        //-- Brush --//
+        context.selectAll('.' + CLASS.brush + ' rect').attr(config.axis_rotated ? "width" : "height", config.axis_rotated ? $$.width2 : $$.height2);
+    }
+};
+c3_chart_internal_fn.updateBarForSubchart = function (durationForExit) {
+    var $$ = this;
+    $$.contextBar = $$.context.selectAll('.' + CLASS.bars).selectAll('.' + CLASS.bar).data($$.barData.bind($$));
+    $$.contextBar.enter().append('path').attr("class", $$.classBar.bind($$)).style("stroke", 'none').style("fill", $$.color);
+    $$.contextBar.style("opacity", $$.initialOpacity.bind($$));
+    $$.contextBar.exit().transition().duration(durationForExit).style('opacity', 0).remove();
+};
+c3_chart_internal_fn.redrawBarForSubchart = function (drawBarOnSub, withTransition, duration) {
+    (withTransition ? this.contextBar.transition(Math.random().toString()).duration(duration) : this.contextBar).attr('d', drawBarOnSub).style('opacity', 1);
+};
+c3_chart_internal_fn.updateLineForSubchart = function (durationForExit) {
+    var $$ = this;
+    $$.contextLine = $$.context.selectAll('.' + CLASS.lines).selectAll('.' + CLASS.line).data($$.lineData.bind($$));
+    $$.contextLine.enter().append('path').attr('class', $$.classLine.bind($$)).style('stroke', $$.color);
+    $$.contextLine.style("opacity", $$.initialOpacity.bind($$));
+    $$.contextLine.exit().transition().duration(durationForExit).style('opacity', 0).remove();
+};
+c3_chart_internal_fn.redrawLineForSubchart = function (drawLineOnSub, withTransition, duration) {
+    (withTransition ? this.contextLine.transition(Math.random().toString()).duration(duration) : this.contextLine).attr("d", drawLineOnSub).style('opacity', 1);
+};
+c3_chart_internal_fn.updateAreaForSubchart = function (durationForExit) {
+    var $$ = this,
+        d3 = $$.d3;
+    $$.contextArea = $$.context.selectAll('.' + CLASS.areas).selectAll('.' + CLASS.area).data($$.lineData.bind($$));
+    $$.contextArea.enter().append('path').attr("class", $$.classArea.bind($$)).style("fill", $$.color).style("opacity", function () {
+        $$.orgAreaOpacity = +d3.select(this).style('opacity');return 0;
+    });
+    $$.contextArea.style("opacity", 0);
+    $$.contextArea.exit().transition().duration(durationForExit).style('opacity', 0).remove();
+};
+c3_chart_internal_fn.redrawAreaForSubchart = function (drawAreaOnSub, withTransition, duration) {
+    (withTransition ? this.contextArea.transition(Math.random().toString()).duration(duration) : this.contextArea).attr("d", drawAreaOnSub).style("fill", this.color).style("opacity", this.orgAreaOpacity);
+};
+c3_chart_internal_fn.redrawSubchart = function (withSubchart, transitions, duration, durationForExit, areaIndices, barIndices, lineIndices) {
+    var $$ = this,
+        d3 = $$.d3,
+        config = $$.config,
+        drawAreaOnSub,
+        drawBarOnSub,
+        drawLineOnSub;
+
+    $$.context.style('visibility', config.subchart_show ? 'visible' : 'hidden');
+
+    // subchart
+    if (config.subchart_show) {
+        // reflect main chart to extent on subchart if zoomed
+        if (d3.event && d3.event.type === 'zoom') {
+            $$.brush.extent($$.x.orgDomain()).update();
+        }
+        // update subchart elements if needed
+        if (withSubchart) {
+
+            // extent rect
+            if (!$$.brush.empty()) {
+                $$.brush.extent($$.x.orgDomain()).update();
+            }
+            // setup drawer - MEMO: this must be called after axis updated
+            drawAreaOnSub = $$.generateDrawArea(areaIndices, true);
+            drawBarOnSub = $$.generateDrawBar(barIndices, true);
+            drawLineOnSub = $$.generateDrawLine(lineIndices, true);
+
+            $$.updateBarForSubchart(duration);
+            $$.updateLineForSubchart(duration);
+            $$.updateAreaForSubchart(duration);
+
+            $$.redrawBarForSubchart(drawBarOnSub, duration, duration);
+            $$.redrawLineForSubchart(drawLineOnSub, duration, duration);
+            $$.redrawAreaForSubchart(drawAreaOnSub, duration, duration);
+        }
+    }
+};
+c3_chart_internal_fn.redrawForBrush = function () {
+    var $$ = this,
+        x = $$.x;
+    $$.redraw({
+        withTransition: false,
+        withY: $$.config.zoom_rescale,
+        withSubchart: false,
+        withUpdateXDomain: true,
+        withDimension: false
+    });
+    $$.config.subchart_onbrush.call($$.api, x.orgDomain());
+};
+c3_chart_internal_fn.transformContext = function (withTransition, transitions) {
+    var $$ = this,
+        subXAxis;
+    if (transitions && transitions.axisSubX) {
+        subXAxis = transitions.axisSubX;
+    } else {
+        subXAxis = $$.context.select('.' + CLASS.axisX);
+        if (withTransition) {
+            subXAxis = subXAxis.transition();
+        }
+    }
+    $$.context.attr("transform", $$.getTranslate('context'));
+    subXAxis.attr("transform", $$.getTranslate('subx'));
+};
+c3_chart_internal_fn.getDefaultExtent = function () {
+    var $$ = this,
+        config = $$.config,
+        extent = isFunction(config.axis_x_extent) ? config.axis_x_extent($$.getXDomain($$.data.targets)) : config.axis_x_extent;
+    if ($$.isTimeSeries()) {
+        extent = [$$.parseDate(extent[0]), $$.parseDate(extent[1])];
+    }
+    return extent;
+};
+
+c3_chart_internal_fn.initText = function () {
+    var $$ = this;
+    $$.main.select('.' + CLASS.chart).append("g").attr("class", CLASS.chartTexts);
+    $$.mainText = $$.d3.selectAll([]);
+};
+c3_chart_internal_fn.updateTargetsForText = function (targets) {
+    var $$ = this,
+        mainTextUpdate,
+        mainTextEnter,
+        classChartText = $$.classChartText.bind($$),
+        classTexts = $$.classTexts.bind($$),
+        classFocus = $$.classFocus.bind($$);
+    mainTextUpdate = $$.main.select('.' + CLASS.chartTexts).selectAll('.' + CLASS.chartText).data(targets).attr('class', function (d) {
+        return classChartText(d) + classFocus(d);
+    });
+    mainTextEnter = mainTextUpdate.enter().append('g').attr('class', classChartText).style('opacity', 0).style("pointer-events", "none");
+    mainTextEnter.append('g').attr('class', classTexts);
+};
+c3_chart_internal_fn.updateText = function (durationForExit) {
+    var $$ = this,
+        config = $$.config,
+        barOrLineData = $$.barOrLineData.bind($$),
+        classText = $$.classText.bind($$);
+    $$.mainText = $$.main.selectAll('.' + CLASS.texts).selectAll('.' + CLASS.text).data(barOrLineData);
+    $$.mainText.enter().append('text').attr("class", classText).attr('text-anchor', function (d) {
+        return config.axis_rotated ? d.value < 0 ? 'end' : 'start' : 'middle';
+    }).style("stroke", 'none').style("fill", function (d) {
+        return $$.color(d);
+    }).style("fill-opacity", 0);
+    $$.mainText.text(function (d, i, j) {
+        return $$.dataLabelFormat(d.id)(d.value, d.id, i, j);
+    });
+    $$.mainText.exit().transition().duration(durationForExit).style('fill-opacity', 0).remove();
+};
+c3_chart_internal_fn.redrawText = function (xForText, yForText, forFlow, withTransition) {
+    return [(withTransition ? this.mainText.transition() : this.mainText).attr('x', xForText).attr('y', yForText).style("fill", this.color).style("fill-opacity", forFlow ? 0 : this.opacityForText.bind(this))];
+};
+c3_chart_internal_fn.getTextRect = function (text, cls, element) {
+    var dummy = this.d3.select('body').append('div').classed('c3', true),
+        svg = dummy.append("svg").style('visibility', 'hidden').style('position', 'fixed').style('top', 0).style('left', 0),
+        font = this.d3.select(element).style('font'),
+        rect;
+    svg.selectAll('.dummy').data([text]).enter().append('text').classed(cls ? cls : "", true).style('font', font).text(text).each(function () {
+        rect = this.getBoundingClientRect();
+    });
+    dummy.remove();
+    return rect;
+};
+c3_chart_internal_fn.generateXYForText = function (areaIndices, barIndices, lineIndices, forX) {
+    var $$ = this,
+        getAreaPoints = $$.generateGetAreaPoints(areaIndices, false),
+        getBarPoints = $$.generateGetBarPoints(barIndices, false),
+        getLinePoints = $$.generateGetLinePoints(lineIndices, false),
+        getter = forX ? $$.getXForText : $$.getYForText;
+    return function (d, i) {
+        var getPoints = $$.isAreaType(d) ? getAreaPoints : $$.isBarType(d) ? getBarPoints : getLinePoints;
+        return getter.call($$, getPoints(d, i), d, this);
+    };
+};
+c3_chart_internal_fn.getXForText = function (points, d, textElement) {
+    var $$ = this,
+        box = textElement.getBoundingClientRect(),
+        xPos,
+        padding;
+    if ($$.config.axis_rotated) {
+        padding = $$.isBarType(d) ? 4 : 6;
+        xPos = points[2][1] + padding * (d.value < 0 ? -1 : 1);
+    } else {
+        xPos = $$.hasType('bar') ? (points[2][0] + points[0][0]) / 2 : points[0][0];
+    }
+    // show labels regardless of the domain if value is null
+    if (d.value === null) {
+        if (xPos > $$.width) {
+            xPos = $$.width - box.width;
+        } else if (xPos < 0) {
+            xPos = 4;
+        }
+    }
+    return xPos;
+};
+c3_chart_internal_fn.getYForText = function (points, d, textElement) {
+    var $$ = this,
+        box = textElement.getBoundingClientRect(),
+        yPos;
+    if ($$.config.axis_rotated) {
+        yPos = (points[0][0] + points[2][0] + box.height * 0.6) / 2;
+    } else {
+        yPos = points[2][1];
+        if (d.value < 0 || d.value === 0 && !$$.hasPositiveValue) {
+            yPos += box.height;
+            if ($$.isBarType(d) && $$.isSafari()) {
+                yPos -= 3;
+            } else if (!$$.isBarType(d) && $$.isChrome()) {
+                yPos += 3;
+            }
+        } else {
+            yPos += $$.isBarType(d) ? -3 : -6;
+        }
+    }
+    // show labels regardless of the domain if value is null
+    if (d.value === null && !$$.config.axis_rotated) {
+        if (yPos < box.height) {
+            yPos = box.height;
+        } else if (yPos > this.height) {
+            yPos = this.height - 4;
+        }
+    }
+    return yPos;
+};
+
+c3_chart_internal_fn.initTitle = function () {
+    var $$ = this;
+    $$.title = $$.svg.append("text").text($$.config.title_text).attr("class", $$.CLASS.title);
+};
+c3_chart_internal_fn.redrawTitle = function () {
+    var $$ = this;
+    $$.title.attr("x", $$.xForTitle.bind($$)).attr("y", $$.yForTitle.bind($$));
+};
+c3_chart_internal_fn.xForTitle = function () {
+    var $$ = this,
+        config = $$.config,
+        position = config.title_position || 'left',
+        x;
+    if (position.indexOf('right') >= 0) {
+        x = $$.currentWidth - $$.getTextRect($$.title.node().textContent, $$.CLASS.title, $$.title.node()).width - config.title_padding.right;
+    } else if (position.indexOf('center') >= 0) {
+        x = ($$.currentWidth - $$.getTextRect($$.title.node().textContent, $$.CLASS.title, $$.title.node()).width) / 2;
+    } else {
+        // left
+        x = config.title_padding.left;
+    }
+    return x;
+};
+c3_chart_internal_fn.yForTitle = function () {
+    var $$ = this;
+    return $$.config.title_padding.top + $$.getTextRect($$.title.node().textContent, $$.CLASS.title, $$.title.node()).height;
+};
+c3_chart_internal_fn.getTitlePadding = function () {
+    var $$ = this;
+    return $$.yForTitle() + $$.config.title_padding.bottom;
+};
+
+c3_chart_internal_fn.initTooltip = function () {
+    var $$ = this,
+        config = $$.config,
+        i;
+    $$.tooltip = $$.selectChart.style("position", "relative").append("div").attr('class', CLASS.tooltipContainer).style("position", "absolute").style("pointer-events", "none").style("display", "none");
+    // Show tooltip if needed
+    if (config.tooltip_init_show) {
+        if ($$.isTimeSeries() && isString(config.tooltip_init_x)) {
+            config.tooltip_init_x = $$.parseDate(config.tooltip_init_x);
+            for (i = 0; i < $$.data.targets[0].values.length; i++) {
+                if ($$.data.targets[0].values[i].x - config.tooltip_init_x === 0) {
+                    break;
+                }
+            }
+            config.tooltip_init_x = i;
+        }
+        $$.tooltip.html(config.tooltip_contents.call($$, $$.data.targets.map(function (d) {
+            return $$.addName(d.values[config.tooltip_init_x]);
+        }), $$.axis.getXAxisTickFormat(), $$.getYFormat($$.hasArcType()), $$.color));
+        $$.tooltip.style("top", config.tooltip_init_position.top).style("left", config.tooltip_init_position.left).style("display", "block");
+    }
+};
+c3_chart_internal_fn.getTooltipSortFunction = function () {
+    var $$ = this,
+        config = $$.config;
+
+    if (config.data_groups.length === 0 || config.tooltip_order !== undefined) {
+        // if data are not grouped or if an order is specified
+        // for the tooltip values we sort them by their values
+
+        var order = config.tooltip_order;
+        if (order === undefined) {
+            order = config.data_order;
+        }
+
+        var valueOf = function valueOf(obj) {
+            return obj ? obj.value : null;
+        };
+
+        // if data are not grouped, we sort them by their value
+        if (isString(order) && order.toLowerCase() === 'asc') {
+            return function (a, b) {
+                return valueOf(a) - valueOf(b);
+            };
+        } else if (isString(order) && order.toLowerCase() === 'desc') {
+            return function (a, b) {
+                return valueOf(b) - valueOf(a);
+            };
+        } else if (isFunction(order)) {
+
+            // if the function is from data_order we need
+            // to wrap the returned function in order to format
+            // the sorted value to the expected format
+
+            var sortFunction = order;
+
+            if (config.tooltip_order === undefined) {
+                sortFunction = function sortFunction(a, b) {
+                    return order(a ? {
+                        id: a.id,
+                        values: [a]
+                    } : null, b ? {
+                        id: b.id,
+                        values: [b]
+                    } : null);
+                };
+            }
+
+            return sortFunction;
+        } else if (isArray(order)) {
+            return function (a, b) {
+                return order.indexOf(a.id) - order.indexOf(b.id);
+            };
+        }
+    } else {
+        // if data are grouped, we follow the order of grouped targets
+        var ids = $$.orderTargets($$.data.targets).map(function (i) {
+            return i.id;
+        });
+
+        // if it was either asc or desc we need to invert the order
+        // returned by orderTargets
+        if ($$.isOrderAsc() || $$.isOrderDesc()) {
+            ids = ids.reverse();
+        }
+
+        return function (a, b) {
+            return ids.indexOf(a.id) - ids.indexOf(b.id);
+        };
+    }
+};
+c3_chart_internal_fn.getTooltipContent = function (d, defaultTitleFormat, defaultValueFormat, color) {
+    var $$ = this,
+        config = $$.config,
+        titleFormat = config.tooltip_format_title || defaultTitleFormat,
+        nameFormat = config.tooltip_format_name || function (name) {
+        return name;
+    },
+        valueFormat = config.tooltip_format_value || defaultValueFormat,
+        text,
+        i,
+        title,
+        value,
+        name,
+        bgcolor;
+
+    var tooltipSortFunction = this.getTooltipSortFunction();
+    if (tooltipSortFunction) {
+        d.sort(tooltipSortFunction);
+    }
+
+    for (i = 0; i < d.length; i++) {
+        if (!(d[i] && (d[i].value || d[i].value === 0))) {
+            continue;
+        }
+
+        if (!text) {
+            title = sanitise(titleFormat ? titleFormat(d[i].x) : d[i].x);
+            text = "<table class='" + $$.CLASS.tooltip + "'>" + (title || title === 0 ? "<tr><th colspan='2'>" + title + "</th></tr>" : "");
+        }
+
+        value = sanitise(valueFormat(d[i].value, d[i].ratio, d[i].id, d[i].index, d));
+        if (value !== undefined) {
+            // Skip elements when their name is set to null
+            if (d[i].name === null) {
+                continue;
+            }
+            name = sanitise(nameFormat(d[i].name, d[i].ratio, d[i].id, d[i].index));
+            bgcolor = $$.levelColor ? $$.levelColor(d[i].value) : color(d[i].id);
+
+            text += "<tr class='" + $$.CLASS.tooltipName + "-" + $$.getTargetSelectorSuffix(d[i].id) + "'>";
+            text += "<td class='name'><span style='background-color:" + bgcolor + "'></span>" + name + "</td>";
+            text += "<td class='value'>" + value + "</td>";
+            text += "</tr>";
+        }
+    }
+    return text + "</table>";
+};
+c3_chart_internal_fn.tooltipPosition = function (dataToShow, tWidth, tHeight, element) {
+    var $$ = this,
+        config = $$.config,
+        d3 = $$.d3;
+    var svgLeft, tooltipLeft, tooltipRight, tooltipTop, chartRight;
+    var forArc = $$.hasArcType(),
+        mouse = d3.mouse(element);
+    // Determin tooltip position
+    if (forArc) {
+        tooltipLeft = ($$.width - ($$.isLegendRight ? $$.getLegendWidth() : 0)) / 2 + mouse[0];
+        tooltipTop = $$.height / 2 + mouse[1] + 20;
+    } else {
+        svgLeft = $$.getSvgLeft(true);
+        if (config.axis_rotated) {
+            tooltipLeft = svgLeft + mouse[0] + 100;
+            tooltipRight = tooltipLeft + tWidth;
+            chartRight = $$.currentWidth - $$.getCurrentPaddingRight();
+            tooltipTop = $$.x(dataToShow[0].x) + 20;
+        } else {
+            tooltipLeft = svgLeft + $$.getCurrentPaddingLeft(true) + $$.x(dataToShow[0].x) + 20;
+            tooltipRight = tooltipLeft + tWidth;
+            chartRight = svgLeft + $$.currentWidth - $$.getCurrentPaddingRight();
+            tooltipTop = mouse[1] + 15;
+        }
+
+        if (tooltipRight > chartRight) {
+            // 20 is needed for Firefox to keep tooltip width
+            tooltipLeft -= tooltipRight - chartRight + 20;
+        }
+        if (tooltipTop + tHeight > $$.currentHeight) {
+            tooltipTop -= tHeight + 30;
+        }
+    }
+    if (tooltipTop < 0) {
+        tooltipTop = 0;
+    }
+    return { top: tooltipTop, left: tooltipLeft };
+};
+c3_chart_internal_fn.showTooltip = function (selectedData, element) {
+    var $$ = this,
+        config = $$.config;
+    var tWidth, tHeight, position;
+    var forArc = $$.hasArcType(),
+        dataToShow = selectedData.filter(function (d) {
+        return d && isValue(d.value);
+    }),
+        positionFunction = config.tooltip_position || c3_chart_internal_fn.tooltipPosition;
+    if (dataToShow.length === 0 || !config.tooltip_show) {
+        return;
+    }
+    $$.tooltip.html(config.tooltip_contents.call($$, selectedData, $$.axis.getXAxisTickFormat(), $$.getYFormat(forArc), $$.color)).style("display", "block");
+
+    // Get tooltip dimensions
+    tWidth = $$.tooltip.property('offsetWidth');
+    tHeight = $$.tooltip.property('offsetHeight');
+
+    position = positionFunction.call(this, dataToShow, tWidth, tHeight, element);
+    // Set tooltip
+    $$.tooltip.style("top", position.top + "px").style("left", position.left + 'px');
+};
+c3_chart_internal_fn.hideTooltip = function () {
+    this.tooltip.style("display", "none");
+};
+
+c3_chart_internal_fn.setTargetType = function (targetIds, type) {
+    var $$ = this,
+        config = $$.config;
+    $$.mapToTargetIds(targetIds).forEach(function (id) {
+        $$.withoutFadeIn[id] = type === config.data_types[id];
+        config.data_types[id] = type;
+    });
+    if (!targetIds) {
+        config.data_type = type;
+    }
+};
+c3_chart_internal_fn.hasType = function (type, targets) {
+    var $$ = this,
+        types = $$.config.data_types,
+        has = false;
+    targets = targets || $$.data.targets;
+    if (targets && targets.length) {
+        targets.forEach(function (target) {
+            var t = types[target.id];
+            if (t && t.indexOf(type) >= 0 || !t && type === 'line') {
+                has = true;
+            }
+        });
+    } else if (Object.keys(types).length) {
+        Object.keys(types).forEach(function (id) {
+            if (types[id] === type) {
+                has = true;
+            }
+        });
+    } else {
+        has = $$.config.data_type === type;
+    }
+    return has;
+};
+c3_chart_internal_fn.hasArcType = function (targets) {
+    return this.hasType('pie', targets) || this.hasType('donut', targets) || this.hasType('gauge', targets);
+};
+c3_chart_internal_fn.isLineType = function (d) {
+    var config = this.config,
+        id = isString(d) ? d : d.id;
+    return !config.data_types[id] || ['line', 'spline', 'area', 'area-spline', 'step', 'area-step'].indexOf(config.data_types[id]) >= 0;
+};
+c3_chart_internal_fn.isStepType = function (d) {
+    var id = isString(d) ? d : d.id;
+    return ['step', 'area-step'].indexOf(this.config.data_types[id]) >= 0;
+};
+c3_chart_internal_fn.isSplineType = function (d) {
+    var id = isString(d) ? d : d.id;
+    return ['spline', 'area-spline'].indexOf(this.config.data_types[id]) >= 0;
+};
+c3_chart_internal_fn.isAreaType = function (d) {
+    var id = isString(d) ? d : d.id;
+    return ['area', 'area-spline', 'area-step'].indexOf(this.config.data_types[id]) >= 0;
+};
+c3_chart_internal_fn.isBarType = function (d) {
+    var id = isString(d) ? d : d.id;
+    return this.config.data_types[id] === 'bar';
+};
+c3_chart_internal_fn.isScatterType = function (d) {
+    var id = isString(d) ? d : d.id;
+    return this.config.data_types[id] === 'scatter';
+};
+c3_chart_internal_fn.isPieType = function (d) {
+    var id = isString(d) ? d : d.id;
+    return this.config.data_types[id] === 'pie';
+};
+c3_chart_internal_fn.isGaugeType = function (d) {
+    var id = isString(d) ? d : d.id;
+    return this.config.data_types[id] === 'gauge';
+};
+c3_chart_internal_fn.isDonutType = function (d) {
+    var id = isString(d) ? d : d.id;
+    return this.config.data_types[id] === 'donut';
+};
+c3_chart_internal_fn.isArcType = function (d) {
+    return this.isPieType(d) || this.isDonutType(d) || this.isGaugeType(d);
+};
+c3_chart_internal_fn.lineData = function (d) {
+    return this.isLineType(d) ? [d] : [];
+};
+c3_chart_internal_fn.arcData = function (d) {
+    return this.isArcType(d.data) ? [d] : [];
+};
+/* not used
+ function scatterData(d) {
+ return isScatterType(d) ? d.values : [];
+ }
+ */
+c3_chart_internal_fn.barData = function (d) {
+    return this.isBarType(d) ? d.values : [];
+};
+c3_chart_internal_fn.lineOrScatterData = function (d) {
+    return this.isLineType(d) || this.isScatterType(d) ? d.values : [];
+};
+c3_chart_internal_fn.barOrLineData = function (d) {
+    return this.isBarType(d) || this.isLineType(d) ? d.values : [];
+};
+c3_chart_internal_fn.isInterpolationType = function (type) {
+    return ['linear', 'linear-closed', 'basis', 'basis-open', 'basis-closed', 'bundle', 'cardinal', 'cardinal-open', 'cardinal-closed', 'monotone'].indexOf(type) >= 0;
+};
+
+c3_chart_internal_fn.isSafari = function () {
+    var ua = window.navigator.userAgent;
+    return ua.indexOf('Safari') >= 0 && ua.indexOf('Chrome') < 0;
+};
+c3_chart_internal_fn.isChrome = function () {
+    var ua = window.navigator.userAgent;
+    return ua.indexOf('Chrome') >= 0;
+};
+
+c3_chart_internal_fn.initZoom = function () {
+    var $$ = this,
+        d3 = $$.d3,
+        config = $$.config,
+        startEvent;
+
+    $$.zoom = d3.behavior.zoom().on("zoomstart", function () {
+        startEvent = d3.event.sourceEvent;
+        $$.zoom.altDomain = d3.event.sourceEvent.altKey ? $$.x.orgDomain() : null;
+        config.zoom_onzoomstart.call($$.api, d3.event.sourceEvent);
+    }).on("zoom", function () {
+        $$.redrawForZoom.call($$);
+    }).on('zoomend', function () {
+        var event = d3.event.sourceEvent;
+        // if click, do nothing. otherwise, click interaction will be canceled.
+        if (event && startEvent.clientX === event.clientX && startEvent.clientY === event.clientY) {
+            return;
+        }
+        $$.redrawEventRect();
+        $$.updateZoom();
+        config.zoom_onzoomend.call($$.api, $$.x.orgDomain());
+    });
+    $$.zoom.scale = function (scale) {
+        return config.axis_rotated ? this.y(scale) : this.x(scale);
+    };
+    $$.zoom.orgScaleExtent = function () {
+        var extent = config.zoom_extent ? config.zoom_extent : [1, 10];
+        return [extent[0], Math.max($$.getMaxDataCount() / extent[1], extent[1])];
+    };
+    $$.zoom.updateScaleExtent = function () {
+        var ratio = diffDomain($$.x.orgDomain()) / diffDomain($$.getZoomDomain()),
+            extent = this.orgScaleExtent();
+        this.scaleExtent([extent[0] * ratio, extent[1] * ratio]);
+        return this;
+    };
+};
+c3_chart_internal_fn.getZoomDomain = function () {
+    var $$ = this,
+        config = $$.config,
+        d3 = $$.d3,
+        min = d3.min([$$.orgXDomain[0], config.zoom_x_min]),
+        max = d3.max([$$.orgXDomain[1], config.zoom_x_max]);
+    return [min, max];
+};
+c3_chart_internal_fn.updateZoom = function () {
+    var $$ = this,
+        z = $$.config.zoom_enabled ? $$.zoom : function () {};
+    $$.main.select('.' + CLASS.zoomRect).call(z).on("dblclick.zoom", null);
+    $$.main.selectAll('.' + CLASS.eventRect).call(z).on("dblclick.zoom", null);
+};
+c3_chart_internal_fn.redrawForZoom = function () {
+    var $$ = this,
+        d3 = $$.d3,
+        config = $$.config,
+        zoom = $$.zoom,
+        x = $$.x;
+    if (!config.zoom_enabled) {
+        return;
+    }
+    if ($$.filterTargetsToShow($$.data.targets).length === 0) {
+        return;
+    }
+    if (d3.event.sourceEvent.type === 'mousemove' && zoom.altDomain) {
+        x.domain(zoom.altDomain);
+        zoom.scale(x).updateScaleExtent();
+        return;
+    }
+    if ($$.isCategorized() && x.orgDomain()[0] === $$.orgXDomain[0]) {
+        x.domain([$$.orgXDomain[0] - 1e-10, x.orgDomain()[1]]);
+    }
+    $$.redraw({
+        withTransition: false,
+        withY: config.zoom_rescale,
+        withSubchart: false,
+        withEventRect: false,
+        withDimension: false
+    });
+    if (d3.event.sourceEvent.type === 'mousemove') {
+        $$.cancelClick = true;
+    }
+    config.zoom_onzoom.call($$.api, x.orgDomain());
+};
+
+return c3$1;
+
+})));