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https://github.com/overleaf/overleaf.git
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83 lines
3.2 KiB
JavaScript
83 lines
3.2 KiB
JavaScript
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/* ***** BEGIN LICENSE BLOCK *****
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* Distributed under the BSD license:
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*
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* Copyright (c) 2010, Ajax.org B.V.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of Ajax.org B.V. nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL AJAX.ORG B.V. BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* ***** END LICENSE BLOCK ***** */
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define(function(require, exports, module) {
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"use strict";
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var lang = require("./lib/lang");
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var oop = require("./lib/oop");
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var Range = require("./range").Range;
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var SearchHighlight = function(regExp, clazz, type) {
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this.setRegexp(regExp);
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this.clazz = clazz;
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this.type = type || "text";
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};
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(function() {
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// needed to prevent long lines from freezing the browser
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this.MAX_RANGES = 500;
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this.setRegexp = function(regExp) {
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if (this.regExp+"" == regExp+"")
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return;
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this.regExp = regExp;
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this.cache = [];
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};
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this.update = function(html, markerLayer, session, config) {
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if (!this.regExp)
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return;
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var start = config.firstRow, end = config.lastRow;
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for (var i = start; i <= end; i++) {
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var ranges = this.cache[i];
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if (ranges == null) {
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ranges = lang.getMatchOffsets(session.getLine(i), this.regExp);
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if (ranges.length > this.MAX_RANGES)
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ranges = ranges.slice(0, this.MAX_RANGES);
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ranges = ranges.map(function(match) {
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return new Range(i, match.offset, i, match.offset + match.length);
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});
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this.cache[i] = ranges.length ? ranges : "";
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}
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for (var j = ranges.length; j --; ) {
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markerLayer.drawSingleLineMarker(
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html, ranges[j].toScreenRange(session), this.clazz, config);
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}
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}
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};
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}).call(SearchHighlight.prototype);
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exports.SearchHighlight = SearchHighlight;
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});
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