Demo/bin/Debug/front_end/cm/closebrackets.js

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// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: http://codemirror.net/LICENSE

(function(mod) {
  if (typeof exports == "object" && typeof module == "object") // CommonJS
    mod(require("../../lib/codemirror"));
  else if (typeof define == "function" && define.amd) // AMD
    define(["../../lib/codemirror"], mod);
  else // Plain browser env
    mod(CodeMirror);
})(function(CodeMirror) {
  var DEFAULT_BRACKETS = "()[]{}''\"\"";
  var DEFAULT_EXPLODE_ON_ENTER = "[]{}";
  var SPACE_CHAR_REGEX = /\s/;

  var Pos = CodeMirror.Pos;

  CodeMirror.defineOption("autoCloseBrackets", false, function(cm, val, old) {
    if (old != CodeMirror.Init && old)
      cm.removeKeyMap("autoCloseBrackets");
    if (!val) return;
    var pairs = DEFAULT_BRACKETS, explode = DEFAULT_EXPLODE_ON_ENTER;
    if (typeof val == "string") pairs = val;
    else if (typeof val == "object") {
      if (val.pairs != null) pairs = val.pairs;
      if (val.explode != null) explode = val.explode;
    }
    var map = buildKeymap(pairs);
    if (explode) map.Enter = buildExplodeHandler(explode);
    cm.addKeyMap(map);
  });

  function charsAround(cm, pos) {
    var str = cm.getRange(Pos(pos.line, pos.ch - 1),
                          Pos(pos.line, pos.ch + 1));
    return str.length == 2 ? str : null;
  }

  function buildKeymap(pairs) {
    var map = {
      name : "autoCloseBrackets",
      Backspace: function(cm) {
        if (cm.getOption("disableInput")) return CodeMirror.Pass;
        var ranges = cm.listSelections();
        for (var i = 0; i < ranges.length; i++) {
          if (!ranges[i].empty()) return CodeMirror.Pass;
          var around = charsAround(cm, ranges[i].head);
          if (!around || pairs.indexOf(around) % 2 != 0) return CodeMirror.Pass;
        }
        for (var i = ranges.length - 1; i >= 0; i--) {
          var cur = ranges[i].head;
          cm.replaceRange("", Pos(cur.line, cur.ch - 1), Pos(cur.line, cur.ch + 1));
        }
      }
    };
    var closingBrackets = "";
    for (var i = 0; i < pairs.length; i += 2) (function(left, right) {
      if (left != right) closingBrackets += right;
      map["'" + left + "'"] = function(cm) {
        if (cm.getOption("disableInput")) return CodeMirror.Pass;