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