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// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: http://codemirror.net/LICENSE
(function(mod) {
if (typeof exports == "object" && typeof module == "object") // CommonJS
mod(require("../../lib/codemirror"), require("./searchcursor"), require("../scroll/annotatescrollbar"));
else if (typeof define == "function" && define.amd) // AMD
define(["../../lib/codemirror", "./searchcursor", "../scroll/annotatescrollbar"], mod);
else // Plain browser env
mod(CodeMirror);
})(function(CodeMirror) {
"use strict";
CodeMirror.defineExtension("showMatchesOnScrollbar", function(query, caseFold, options) {
if (typeof options == "string") options = {className: options};
if (!options) options = {};
return new SearchAnnotation(this, query, caseFold, options);
});
function SearchAnnotation(cm, query, caseFold, options) {
this.cm = cm;
this.options = options;
var annotateOptions = {listenForChanges: false};
for (var prop in options) annotateOptions[prop] = options[prop];
if (!annotateOptions.className) annotateOptions.className = "CodeMirror-search-match";
this.annotation = cm.annotateScrollbar(annotateOptions);
this.query = query;
this.caseFold = caseFold;
this.gap = {from: cm.firstLine(), to: cm.lastLine() + 1};
this.matches = [];
this.update = null;
this.findMatches();
this.annotation.update(this.matches);
var self = this;
cm.on("change", this.changeHandler = function(_cm, change) { self.onChange(change); });
}
var MAX_MATCHES = 1000;
SearchAnnotation.prototype.findMatches = function() {
if (!this.gap) return;
for (var i = 0; i < this.matches.length; i++) {
var match = this.matches[i];
if (match.from.line >= this.gap.to) break;
if (match.to.line >= this.gap.from) this.matches.splice(i--, 1);
}
var cursor = this.cm.getSearchCursor(this.query, CodeMirror.Pos(this.gap.from, 0), this.caseFold);
var maxMatches = this.options && this.options.maxMatches || MAX_MATCHES;
while (cursor.findNext()) {
var match = {from: cursor.from(), to: cursor.to()};
if (match.from.line >= this.gap.to) break;
this.matches.splice(i++, 0, match);
if (this.matches.length > maxMatches) break;
}
this.gap = null;
};
function offsetLine(line, changeStart, sizeChange) {
if (line <= changeStart) return line;
return Math.max(changeStart, line + sizeChange);
}
SearchAnnotation.prototype.onChange = function(change) {
var startLine = change.from.line;
var endLine = CodeMirror.changeEnd(change).line;
var sizeChange = endLine - change.to.line;
if (this.gap) {
this.gap.from = Math.min(offsetLine(this.gap.from, startLine, sizeChange), change.from.line);
this.gap.to = Math.max(offsetLine(this.gap.to, startLine, sizeChange), change.from.line);
} else {
this.gap = {from: change.from.line, to: endLine + 1};
}
if (sizeChange) for (var i = 0; i < this.matches.length; i++) {
var match = this.matches[i];
var newFrom = offsetLine(match.from.line, startLine, sizeChange);
if (newFrom != match.from.line) match.from = CodeMirror.Pos(newFrom, match.from.ch);
var newTo = offsetLine(match.to.line, startLine, sizeChange);
if (newTo != match.to.line) match.to = CodeMirror.Pos(newTo, match.to.ch);
}
clearTimeout(this.update);
var self = this;
this.update = setTimeout(function() { self.updateAfterChange(); }, 250);
};
SearchAnnotation.prototype.updateAfterChange = function() {
this.findMatches();
this.annotation.update(this.matches);
};
SearchAnnotation.prototype.clear = function() {
this.cm.off("change", this.changeHandler);
this.annotation.clear();
};
});
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