SenBiTeSolution.UI/ueditor/third-party/codemirror2.15/codemirror.js

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// CodeMirror version 2.2
//
// All functions that need access to the editor's state live inside
// the CodeMirror function. Below that, at the bottom of the file,
// some utilities are defined.

// CodeMirror is the only global var we claim

//修复多次引用的问题
var CodeMirror = window.CodeMirror || (function() {
  // This is the function that produces an editor instance. It's
  // closure is used to store the editor state.
  function CodeMirror(place, givenOptions) {
    // Determine effective options based on given values and defaults.
    var options = {}, defaults = CodeMirror.defaults;
    for (var opt in defaults)
      if (defaults.hasOwnProperty(opt))
        options[opt] = (givenOptions && givenOptions.hasOwnProperty(opt) ? givenOptions : defaults)[opt];

    var targetDocument = options["document"];
    // The element in which the editor lives.
    var wrapper = targetDocument.createElement("div");
    wrapper.className = "CodeMirror" + (options.lineWrapping ? " CodeMirror-wrap" : "");
    // This mess creates the base DOM structure for the editor.
    wrapper.innerHTML =
      '<div style="overflow: hidden; position: relative; width: 3px; height: 0px;">' + // Wraps and hides input textarea
        '<textarea style="position: absolute; padding: 0; width: 1px;" wrap="off" ' +
          'autocorrect="off" autocapitalize="off"></textarea></div>' +
      '<div class="CodeMirror-scroll" tabindex="-1">' +
        '<div style="position: relative">' + // Set to the height of the text, causes scrolling
          '<div style="position: relative">' + // Moved around its parent to cover visible view
            '<div class="CodeMirror-gutter"><div class="CodeMirror-gutter-text"></div></div>' +
            // Provides positioning relative to (visible) text origin
            '<div class="CodeMirror-lines"><div style="position: relative">' +
              '<div style="position: absolute; width: 100%; height: 0; overflow: hidden; visibility: hidden"></div>' +
              '<pre class="CodeMirror-cursor">&#160;</pre>' + // Absolutely positioned blinky cursor
              '<div></div>' + // This DIV contains the actual code
            '</div></div></div></div></div>';
    if (place.appendChild) place.appendChild(wrapper); else place(wrapper);
    // I've never seen more elegant code in my life.
    var inputDiv = wrapper.firstChild, input = inputDiv.firstChild,
        scroller = wrapper.lastChild, code = scroller.firstChild,
        mover = code.firstChild, gutter = mover.firstChild, gutterText = gutter.firstChild,
        lineSpace = gutter.nextSibling.firstChild, measure = lineSpace.firstChild,
        cursor = measure.nextSibling, lineDiv = cursor.nextSibling;
    themeChanged();
    // Needed to hide big blue blinking cursor on Mobile Safari
    if (/AppleWebKit/.test(navigator.userAgent) && /Mobile\/\w+/.test(navigator.userAgent)) input.style.width = "0px";
    if (!webkit) lineSpace.draggable = true;
    if (options.tabindex != null) input.tabIndex = options.tabindex;
    if (!options.gutter && !options.lineNumbers) gutter.style.display = "none";

    // Check for problem with IE innerHTML not working when we have a
    // P (or similar) parent node.
    try { stringWidth("x"); }
    catch (e) {
      if (e.message.match(/runtime/i))
        e = new Error("A CodeMirror inside a P-style element does not work in Internet Explorer. (innerHTML bug)");
      throw e;
    }