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share/endpoint/www/js/codemirror.js  view on Meta::CPAN

      function ensureEnoughLineNumbers(fill) {
        var lineHeight = scroller.firstChild.offsetHeight;
        if (lineHeight == 0) return;
        var targetHeight = 50 + Math.max(body.offsetHeight, Math.max(frame.offsetHeight, body.scrollHeight || 0)),
            lastNumber = Math.ceil(targetHeight / lineHeight);
        for (var i = scroller.childNodes.length; i <= lastNumber; i++) {
          var div = document.createElement("DIV");
          div.appendChild(document.createTextNode(fill ? String(i + self.options.firstLineNumber) : "\u00a0"));
          scroller.appendChild(div);
        }
      }

      function nonWrapping() {
        function update() {
          ensureEnoughLineNumbers(true);
          doScroll();
        }
        self.updateNumbers = update;
        var onScroll = win.addEventHandler(win, "scroll", doScroll, true),
            onResize = win.addEventHandler(win, "resize", update, true);
        clear = function(){
          onScroll(); onResize();
          if (self.updateNumbers == update) self.updateNumbers = null;
        };
        update();
      }

      function wrapping() {
        var node, lineNum, next, pos, changes = [], styleNums = self.options.styleNumbers;

        function setNum(n, node) {
          // Does not typically happen (but can, if you mess with the
          // document during the numbering)
          if (!lineNum) lineNum = scroller.appendChild(document.createElement("DIV"));
          if (styleNums) styleNums(lineNum, node, n);
          // Changes are accumulated, so that the document layout
          // doesn't have to be recomputed during the pass
          changes.push(lineNum); changes.push(n);
          pos = lineNum.offsetHeight + lineNum.offsetTop;
          lineNum = lineNum.nextSibling;
        }
        function commitChanges() {
          for (var i = 0; i < changes.length; i += 2)
            changes[i].innerHTML = changes[i + 1];
          changes = [];
        }
        function work() {
          if (!scroller.parentNode || scroller.parentNode != self.lineNumbers) return;

          var endTime = new Date().getTime() + self.options.lineNumberTime;
          while (node) {
            setNum(next++, node.previousSibling);
            for (; node && !win.isBR(node); node = node.nextSibling) {
              var bott = node.offsetTop + node.offsetHeight;
              while (scroller.offsetHeight && bott - 3 > pos) setNum("&nbsp;");
            }
            if (node) node = node.nextSibling;
            if (new Date().getTime() > endTime) {
              commitChanges();
              pending = setTimeout(work, self.options.lineNumberDelay);
              return;
            }
          }
          while (lineNum) setNum(next++);
          commitChanges();
          doScroll();
        }
        function start(firstTime) {
          doScroll();
          ensureEnoughLineNumbers(firstTime);
          node = body.firstChild;
          lineNum = scroller.firstChild;
          pos = 0;
          next = self.options.firstLineNumber;
          work();
        }

        start(true);
        var pending = null;
        function update() {
          if (pending) clearTimeout(pending);
          if (self.editor.allClean()) start();
          else pending = setTimeout(update, 200);
        }
        self.updateNumbers = update;
        var onScroll = win.addEventHandler(win, "scroll", doScroll, true),
            onResize = win.addEventHandler(win, "resize", update, true);
        clear = function(){
          if (pending) clearTimeout(pending);
          if (self.updateNumbers == update) self.updateNumbers = null;
          onScroll();
          onResize();
        };
      }
      (this.options.textWrapping || this.options.styleNumbers ? wrapping : nonWrapping)();
    },

    setDynamicHeight: function() {
      var self = this, activity = self.options.cursorActivity, win = self.win, body = win.document.body,
          lineHeight = null, timeout = null, vmargin = 2 * self.frame.offsetTop;
      body.style.overflowY = "hidden";
      win.document.documentElement.style.overflowY = "hidden";
      this.frame.scrolling = "no";

      function updateHeight() {
        var trailingLines = 0, node = body.lastChild, computedHeight;
        while (node && win.isBR(node)) {
          if (!node.hackBR) trailingLines++;
          node = node.previousSibling;
        }
        if (node) {
          lineHeight = node.offsetHeight;
          computedHeight = node.offsetTop + (1 + trailingLines) * lineHeight;
        }
        else if (lineHeight) {
          computedHeight = trailingLines * lineHeight;
        }
        if (computedHeight)
          self.wrapping.style.height = Math.max(vmargin + computedHeight, self.options.minHeight) + "px";
      }
      setTimeout(updateHeight, 300);
      self.options.cursorActivity = function(x) {
        if (activity) activity(x);
        clearTimeout(timeout);
        timeout = setTimeout(updateHeight, 100);
      };
    }
  };

  CodeMirror.InvalidLineHandle = {toString: function(){return "CodeMirror.InvalidLineHandle";}};

  CodeMirror.replace = function(element) {
    if (typeof element == "string")
      element = document.getElementById(element);
    return function(newElement) {
      element.parentNode.replaceChild(newElement, element);
    };
  };

  CodeMirror.fromTextArea = function(area, options) {
    if (typeof area == "string")
      area = document.getElementById(area);

    options = options || {};
    if (area.style.width && options.width == null)
      options.width = area.style.width;
    if (area.style.height && options.height == null)
      options.height = area.style.height;
    if (options.content == null) options.content = area.value;

    if (area.form) {
      function updateField() {
        area.value = mirror.getCode();
      }
      if (typeof area.form.addEventListener == "function")
        area.form.addEventListener("submit", updateField, false);
      else
        area.form.attachEvent("onsubmit", updateField);
      var realSubmit = area.form.submit;
      function wrapSubmit() {
        updateField();
        // Can't use realSubmit.apply because IE6 is too stupid
        area.form.submit = realSubmit;
        area.form.submit();
        area.form.submit = wrapSubmit;
      }
      area.form.submit = wrapSubmit;
    }

    function insert(frame) {
      if (area.nextSibling)
        area.parentNode.insertBefore(frame, area.nextSibling);
      else
        area.parentNode.appendChild(frame);
    }

    area.style.display = "none";
    var mirror = new CodeMirror(insert, options);
    mirror.toTextArea = function() {
      updateField();
      area.parentNode.removeChild(mirror.wrapping);
      area.style.display = "";
      if (area.form) {
        area.form.submit = realSubmit;
        if (typeof area.form.removeEventListener == "function")