45 lines
1.6 KiB
JavaScript
45 lines
1.6 KiB
JavaScript
// Define match-highlighter commands. Depends on searchcursor.js
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// Use by attaching the following function call to the onCursorActivity event:
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//myCodeMirror.matchHighlight(minChars);
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// And including a special span.CodeMirror-matchhighlight css class (also optionally a separate one for .CodeMirror-focused -- see demo matchhighlighter.html)
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(function() {
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var DEFAULT_MIN_CHARS = 2;
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function MatchHighlightState() {
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this.marked = [];
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}
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function getMatchHighlightState(cm) {
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return cm._matchHighlightState || (cm._matchHighlightState = new MatchHighlightState());
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}
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function clearMarks(cm) {
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var state = getMatchHighlightState(cm);
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for (var i = 0; i < state.marked.length; ++i)
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state.marked[i].clear();
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state.marked = [];
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}
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function markDocument(cm, className, minChars) {
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clearMarks(cm);
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minChars = (typeof minChars !== 'undefined' ? minChars : DEFAULT_MIN_CHARS);
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if (cm.somethingSelected() && cm.getSelection().replace(/^\s+|\s+$/g, "").length >= minChars) {
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var state = getMatchHighlightState(cm);
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var query = cm.getSelection();
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cm.operation(function() {
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if (cm.lineCount() < 2000) { // This is too expensive on big documents.
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for (var cursor = cm.getSearchCursor(query); cursor.findNext();) {
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//Only apply matchhighlight to the matches other than the one actually selected
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if (!(cursor.from().line === cm.getCursor(true).line && cursor.from().ch === cm.getCursor(true).ch))
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state.marked.push(cm.markText(cursor.from(), cursor.to(), className));
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}
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}
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});
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}
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}
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CodeMirror.defineExtension("matchHighlight", function(className, minChars) {
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markDocument(this, className, minChars);
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});
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})();
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