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(function() { |
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"use strict"; |
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|
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function doFold(cm, pos, options) { |
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var finder = options && (options.call ? options : options.rangeFinder); |
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if (!finder) finder = cm.getHelper(pos, "fold"); |
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if (!finder) return; |
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if (typeof pos == "number") pos = CodeMirror.Pos(pos, 0); |
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var minSize = options && options.minFoldSize || 0; |
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|
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function getRange(allowFolded) { |
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var range = finder(cm, pos); |
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if (!range || range.to.line - range.from.line < minSize) return null; |
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var marks = cm.findMarksAt(range.from); |
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for (var i = 0; i < marks.length; ++i) { |
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if (marks[i].__isFold) { |
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if (!allowFolded) return null; |
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range.cleared = true; |
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marks[i].clear(); |
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} |
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} |
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return range; |
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} |
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|
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var range = getRange(true); |
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if (options && options.scanUp) while (!range && pos.line > cm.firstLine()) { |
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pos = CodeMirror.Pos(pos.line - 1, 0); |
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range = getRange(false); |
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} |
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if (!range || range.cleared) return; |
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|
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var myWidget = makeWidget(options); |
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CodeMirror.on(myWidget, "mousedown", function() { myRange.clear(); }); |
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var myRange = cm.markText(range.from, range.to, { |
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replacedWith: myWidget, |
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clearOnEnter: true, |
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__isFold: true |
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}); |
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myRange.on("clear", function(from, to) { |
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CodeMirror.signal(cm, "unfold", cm, from, to); |
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}); |
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CodeMirror.signal(cm, "fold", cm, range.from, range.to); |
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} |
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|
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function makeWidget(options) { |
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var widget = (options && options.widget) || "\u2194"; |
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if (typeof widget == "string") { |
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var text = document.createTextNode(widget); |
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widget = document.createElement("span"); |
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widget.appendChild(text); |
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widget.className = "CodeMirror-foldmarker"; |
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} |
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return widget; |
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} |
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|
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// Clumsy backwards-compatible interface |
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CodeMirror.newFoldFunction = function(rangeFinder, widget) { |
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return function(cm, pos) { doFold(cm, pos, {rangeFinder: rangeFinder, widget: widget}); }; |
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}; |
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|
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// New-style interface |
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CodeMirror.defineExtension("foldCode", function(pos, options) { doFold(this, pos, options); }); |
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|
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CodeMirror.registerHelper("fold", "combine", function() { |
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var funcs = Array.prototype.slice.call(arguments, 0); |
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return function(cm, start) { |
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for (var i = 0; i < funcs.length; ++i) { |
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var found = funcs[i](cm, start); |
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if (found) return found; |
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} |
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}; |
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}); |
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})(); |
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|
