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