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import {Class} from '../core/Class';
import {Map} from '../map/Map';
import * as Util from '../core/Util';
import * as DomUtil from '../dom/DomUtil';
/*
* @class Control
* @aka L.Control
* @inherits Class
*
* L.Control is a base class for implementing map controls. Handles positioning.
* All other controls extend from this class.
*/
export var Control = Class.extend({
// @section
// @aka Control options
options: {
// @option position: String = 'topright'
// The position of the control (one of the map corners). Possible values are `'topleft'`,
// `'topright'`, `'bottomleft'` or `'bottomright'`
position: 'topright'
},
initialize: function (options) {
Util.setOptions(this, options);
},
/* @section
* Classes extending L.Control will inherit the following methods:
*
* @method getPosition: string
* Returns the position of the control.
*/
getPosition: function () {
return this.options.position;
},
// @method setPosition(position: string): this
// Sets the position of the control.
setPosition: function (position) {
var map = this._map;
if (map) {
map.removeControl(this);
}
this.options.position = position;
if (map) {
map.addControl(this);
}
return this;
},
// @method getContainer: HTMLElement
// Returns the HTMLElement that contains the control.
getContainer: function () {
return this._container;
},
// @method addTo(map: Map): this
// Adds the control to the given map.
addTo: function (map) {
this.remove();
this._map = map;
var container = this._container = this.onAdd(map),
pos = this.getPosition(),
corner = map._controlCorners[pos];
DomUtil.addClass(container, 'leaflet-control');
if (pos.indexOf('bottom') !== -1) {
corner.insertBefore(container, corner.firstChild);
} else {
corner.appendChild(container);
}
return this;
},
// @method remove: this
// Removes the control from the map it is currently active on.
remove: function () {
if (!this._map) {
return this;
}
DomUtil.remove(this._container);
if (this.onRemove) {
this.onRemove(this._map);
}
this._map = null;
return this;
},
_refocusOnMap: function (e) {
// if map exists and event is not a keyboard event
if (this._map && e && e.screenX > 0 && e.screenY > 0) {
this._map.getContainer().focus();
}
}
});
export var control = function (options) {
return new Control(options);
};
/* @section Extension methods
* @uninheritable
*
* Every control should extend from `L.Control` and (re-)implement the following methods.
*
* @method onAdd(map: Map): HTMLElement
* Should return the container DOM element for the control and add listeners on relevant map events. Called on [`control.addTo(map)`](#control-addTo).
*
* @method onRemove(map: Map)
* Optional method. Should contain all clean up code that removes the listeners previously added in [`onAdd`](#control-onadd). Called on [`control.remove()`](#control-remove).
*/
/* @namespace Map
* @section Methods for Layers and Controls
*/
Map.include({
// @method addControl(control: Control): this
// Adds the given control to the map
addControl: function (control) {
control.addTo(this);
return this;
},
// @method removeControl(control: Control): this
// Removes the given control from the map
removeControl: function (control) {
control.remove();
return this;
},
_initControlPos: function () {
var corners = this._controlCorners = {},
l = 'leaflet-',
container = this._controlContainer =
DomUtil.create('div', l + 'control-container', this._container);
function createCorner(vSide, hSide) {
var className = l + vSide + ' ' + l + hSide;
corners[vSide + hSide] = DomUtil.create('div', className, container);
}
createCorner('top', 'left');
createCorner('top', 'right');
createCorner('bottom', 'left');
createCorner('bottom', 'right');
},
_clearControlPos: function () {
for (var i in this._controlCorners) {
DomUtil.remove(this._controlCorners[i]);
}
DomUtil.remove(this._controlContainer);
delete this._controlCorners;
delete this._controlContainer;
}
});
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