Defines change mode command for CodeMirror based on 'addon/search/jump-to-line.js'

changemode.js

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

// Defines changeMode command. Uses dialog.js if present.

(function(mod) {
  if (typeof exports == "object" && typeof module == "object") // CommonJS
    mod(require("../../lib/codemirror"), require("../dialog/dialog"));
  else if (typeof define == "function" && define.amd) // AMD
    define(["../../lib/codemirror", "../dialog/dialog"], mod);
  else // Plain browser env
    mod(CodeMirror);
})(function(CodeMirror) {
  "use strict";

  function dialog(cm, text, shortText, deflt, f) {
    if (cm.openDialog) cm.openDialog(text, f, {value: deflt, selectValueOnOpen: true});
    else f(prompt(shortText, deflt));
  }

  var changeDialog =
      'Change mode: <input type="text" style="width: 10em" class="CodeMirror-change-field"/> <span style="color: #888" class="CodeMirror-change-hint">(Use mode:extension or type/subtype syntax)</span>';

  CodeMirror.commands.changeMode = function(cm) {
    var cur = cm.getCursor();
    dialog(cm, changeDialog, "Change mode:", "", function(modeStr) {
      var m, mode, spec, info;
      if (/\//.test(modeStr)) {
        if (info = CodeMirror.findModeByMIME(modeStr)) {
          mode = info.mode;
          spec = modeStr;
        }
      } else if (info = CodeMirror.findModeByExtension(modeStr)) {
        mode = info.mode;
        spec = info.mime;
      } else {
        var
        mode = spec = modeStr.toLowerCase();
      }
      if (mode) {
        cm.setOption("mode", spec);
        CodeMirror.autoLoadMode(cm, mode);
      } else {
        alert("Could not find a mode corresponding to " + modeStr);
      }
    });
  };

  CodeMirror.keyMap["default"]["Ctrl-Shift-L"] = "changeMode";
});