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foldcode.min.js (4814B)

      1 // CodeMirror, copyright (c) by Marijn Haverbeke and others
      2 // Distributed under an MIT license: http://codemirror.net/LICENSE
      3 
      4 (function(mod) {
      5   if (typeof exports == "object" && typeof module == "object") // CommonJS
      6     mod(require("../../lib/codemirror"));
      7   else if (typeof define == "function" && define.amd) // AMD
      8     define(["../../lib/codemirror"], mod);
      9   else // Plain browser env
     10     mod(CodeMirror);
     11 })(function(CodeMirror) {
     12   "use strict";
     13 
     14   function doFold(cm, pos, options, force) {
     15     if (options && options.call) {
     16       var finder = options;
     17       options = null;
     18     } else {
     19       var finder = getOption(cm, options, "rangeFinder");
     20     }
     21     if (typeof pos == "number") pos = CodeMirror.Pos(pos, 0);
     22     var minSize = getOption(cm, options, "minFoldSize");
     23 
     24     function getRange(allowFolded) {
     25       var range = finder(cm, pos);
     26       if (!range || range.to.line - range.from.line < minSize) return null;
     27       var marks = cm.findMarksAt(range.from);
     28       for (var i = 0; i < marks.length; ++i) {
     29         if (marks[i].__isFold && force !== "fold") {
     30           if (!allowFolded) return null;
     31           range.cleared = true;
     32           marks[i].clear();
     33         }
     34       }
     35       return range;
     36     }
     37 
     38     var range = getRange(true);
     39     if (getOption(cm, options, "scanUp")) while (!range && pos.line > cm.firstLine()) {
     40       pos = CodeMirror.Pos(pos.line - 1, 0);
     41       range = getRange(false);
     42     }
     43     if (!range || range.cleared || force === "unfold") return;
     44 
     45     var myWidget = makeWidget(cm, options);
     46     CodeMirror.on(myWidget, "mousedown", function(e) {
     47       myRange.clear();
     48       CodeMirror.e_preventDefault(e);
     49     });
     50     var myRange = cm.markText(range.from, range.to, {
     51       replacedWith: myWidget,
     52       clearOnEnter: getOption(cm, options, "clearOnEnter"),
     53       __isFold: true
     54     });
     55     myRange.on("clear", function(from, to) {
     56       CodeMirror.signal(cm, "unfold", cm, from, to);
     57     });
     58     CodeMirror.signal(cm, "fold", cm, range.from, range.to);
     59   }
     60 
     61   function makeWidget(cm, options) {
     62     var widget = getOption(cm, options, "widget");
     63     if (typeof widget == "string") {
     64       var text = document.createTextNode(widget);
     65       widget = document.createElement("span");
     66       widget.appendChild(text);
     67       widget.className = "CodeMirror-foldmarker";
     68     } else if (widget) {
     69       widget = widget.cloneNode(true)
     70     }
     71     return widget;
     72   }
     73 
     74   // Clumsy backwards-compatible interface
     75   CodeMirror.newFoldFunction = function(rangeFinder, widget) {
     76     return function(cm, pos) { doFold(cm, pos, {rangeFinder: rangeFinder, widget: widget}); };
     77   };
     78 
     79   // New-style interface
     80   CodeMirror.defineExtension("foldCode", function(pos, options, force) {
     81     doFold(this, pos, options, force);
     82   });
     83 
     84   CodeMirror.defineExtension("isFolded", function(pos) {
     85     var marks = this.findMarksAt(pos);
     86     for (var i = 0; i < marks.length; ++i)
     87       if (marks[i].__isFold) return true;
     88   });
     89 
     90   CodeMirror.commands.toggleFold = function(cm) {
     91     cm.foldCode(cm.getCursor());
     92   };
     93   CodeMirror.commands.fold = function(cm) {
     94     cm.foldCode(cm.getCursor(), null, "fold");
     95   };
     96   CodeMirror.commands.unfold = function(cm) {
     97     cm.foldCode(cm.getCursor(), null, "unfold");
     98   };
     99   CodeMirror.commands.foldAll = function(cm) {
    100     cm.operation(function() {
    101       for (var i = cm.firstLine(), e = cm.lastLine(); i <= e; i++)
    102         cm.foldCode(CodeMirror.Pos(i, 0), null, "fold");
    103     });
    104   };
    105   CodeMirror.commands.unfoldAll = function(cm) {
    106     cm.operation(function() {
    107       for (var i = cm.firstLine(), e = cm.lastLine(); i <= e; i++)
    108         cm.foldCode(CodeMirror.Pos(i, 0), null, "unfold");
    109     });
    110   };
    111 
    112   CodeMirror.registerHelper("fold", "combine", function() {
    113     var funcs = Array.prototype.slice.call(arguments, 0);
    114     return function(cm, start) {
    115       for (var i = 0; i < funcs.length; ++i) {
    116         var found = funcs[i](cm, start);
    117         if (found) return found;
    118       }
    119     };
    120   });
    121 
    122   CodeMirror.registerHelper("fold", "auto", function(cm, start) {
    123     var helpers = cm.getHelpers(start, "fold");
    124     for (var i = 0; i < helpers.length; i++) {
    125       var cur = helpers[i](cm, start);
    126       if (cur) return cur;
    127     }
    128   });
    129 
    130   var defaultOptions = {
    131     rangeFinder: CodeMirror.fold.auto,
    132     widget: "\u2194",
    133     minFoldSize: 0,
    134     scanUp: false,
    135     clearOnEnter: true
    136   };
    137 
    138   CodeMirror.defineOption("foldOptions", null);
    139 
    140   function getOption(cm, options, name) {
    141     if (options && options[name] !== undefined)
    142       return options[name];
    143     var editorOptions = cm.options.foldOptions;
    144     if (editorOptions && editorOptions[name] !== undefined)
    145       return editorOptions[name];
    146     return defaultOptions[name];
    147   }
    148 
    149   CodeMirror.defineExtension("foldOption", function(options, name) {
    150     return getOption(this, options, name);
    151   });
    152 });