Function CodeMirror

GUI/codemirror/lib/codemirror.js:60–111

(place, options)

  // that user code is usually dealing with.

  function CodeMirror(place, options) {
    if (!(this instanceof CodeMirror)) return new CodeMirror(place, options);

    this.options = options = options || {};
    // Determine effective options based on given values and defaults.
    copyObj(defaults, options, false);
    setGuttersForLineNumbers(options);

    var doc = options.value;
    if (typeof doc == "string") doc = new Doc(doc, options.mode);
    this.doc = doc;

    var display = this.display = new Display(place, doc);
    display.wrapper.CodeMirror = this;
    updateGutters(this);
    themeChanged(this);
    if (options.lineWrapping)
      this.display.wrapper.className += " CodeMirror-wrap";
    if (options.autofocus && !mobile) focusInput(this);

    this.state = {
      keyMaps: [],  // stores maps added by addKeyMap
      overlays: [], // highlighting overlays, as added by addOverlay
      modeGen: 0,   // bumped when mode/overlay changes, used to invalidate highlighting info
      overwrite: false, focused: false,
      suppressEdits: false, // used to disable editing during key handlers when in readOnly mode
      pasteIncoming: false, cutIncoming: false, // help recognize paste/cut edits in readInput
      draggingText: false,
      highlight: new Delayed() // stores highlight worker timeout
    };

    // Override magic textarea content restore that IE sometimes does
    // on our hidden textarea on reload
    if (ie_upto10) setTimeout(bind(resetInput, this, true), 20);

    registerEventHandlers(this);

    var cm = this;
    runInOp(this, function() {
      cm.curOp.forceUpdate = true;
      attachDoc(cm, doc);

      if ((options.autofocus && !mobile) || activeElt() == display.input)
        setTimeout(bind(onFocus, cm), 20);
      else
        onBlur(cm);

      for (var opt in optionHandlers) if (optionHandlers.hasOwnProperty(opt))
        optionHandlers[opt](cm, options[opt], Init);
      for (var i = 0; i < initHooks.length; ++i) initHooks[i](cm);
    });
  }

  // DISPLAY CONSTRUCTOR