text: // script.aculo.us controls.js v1.8.2, Tue Nov 18 18:30:58 +0100 2008
  
  // Copyright (c) 2005-2008 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
  //           (c) 2005-2008 Ivan Krstic (http://blogs.law.harvard.edu/ivan)
  //           (c) 2005-2008 Jon Tirsen (http://www.tirsen.com)
  // Contributors:
  //  Richard Livsey
  //  Rahul Bhargava
  //  Rob Wills
  //
  // script.aculo.us is freely distributable under the terms of an MIT-style license.
  // For details, see the script.aculo.us web site: http://script.aculo.us/
  
  // Autocompleter.Base handles all the autocompletion functionality
  // that's independent of the data source for autocompletion. This
  // includes drawing the autocompletion menu, observing keyboard
  // and mouse events, and similar.
  //
  // Specific autocompleters need to provide, at the very least,
  // a getUpdatedChoices function that will be invoked every time
  // the text inside the monitored textbox changes. This method
  // should get the text for which to provide autocompletion by
  // invoking this.getToken(), NOT by directly accessing
  // this.element.value. This is to allow incremental tokenized
  // autocompletion. Specific auto-completion logic (AJAX, etc)
  // belongs in getUpdatedChoices.
  //
  // Tokenized incremental autocompletion is enabled automatically
  // when an autocompleter is instantiated with the 'tokens' option
  // in the options parameter, e.g.:
  // new Ajax.Autocompleter('id','upd', '/url/', { tokens: ',' });
  // will incrementally autocomplete with a comma as the token.
  // Additionally, ',' in the above example can be replaced with
  // a token array, e.g. { tokens: [',', '\n'] } which
  // enables autocompletion on multiple tokens. This is most
  // useful when one of the tokens is \n (a newline), as it
  // allows smart autocompletion after linebreaks.
  
  if(typeof Effect == 'undefined')
    throw("controls.js requires including script.aculo.us' effects.js library");
  
  var Autocompleter = { };
  Autocompleter.Base = Class.create({
    baseInitialize: function(element, update, options) {
      element          = $(element);
      this.element     = element;
      this.update      = $(update);
      this.hasFocus    = false;
      this.changed     = false;
      this.active      = false;
      this.index       = 0;
      this.entryCount  = 0;
      this.oldElementValue = this.element.value;
  
      if(this.setOptions)
        this.setOptions(options);
      else
        this.options = options || { };
  
      this.options.paramName    = this.options.paramName || this.element.name;
      this.options.tokens       = this.options.tokens || [];
      this.options.frequency    = this.options.frequency || 0.4;
      this.options.minChars     = this.options.minChars || 1;
      this.options.onShow       = this.options.onShow ||
        function(element, update){
          if(!update.style.position || update.style.position=='absolute') {
            update.style.position = 'absolute';
            Position.clone(element, update, {
              setHeight: false,
              offsetTop: element.offsetHeight
            });
          }
          Effect.Appear(update,{duration:0.15});
        };
      this.options.onHide = this.options.onHide ||
        function(element, update){ new Effect.Fade(update,{duration:0.15}) };
  
      if(typeof(this.options.tokens) == 'string')
        this.options.tokens = new Array(this.options.tokens);
      // Force carriage returns as token delimiters anyway
      if (!this.options.tokens.include('\n'))
        this.options.tokens.push('\n');
  
      this.observer = null;
  
      this.element.setAttribute('autocomplete','off');
  
      Element.hide(this.update);
  
      Event.observe(this.element, 'blur', this.onBlur.bindAsEventListener(this));
      Event.observe(this.element, 'keydown', this.onKeyPress.bindAsEventListener(this));
    },
  
    show: function() {
      if(Element.getStyle(this.update, 'display')=='none') this.options.onShow(this.element, this.update);
      if(!this.iefix &&
        (Prototype.Browser.IE) &&
        (Element.getStyle(this.update, 'position')=='absolute')) {
        new Insertion.After(this.update,
         '<iframe id="' + this.update.id + '_iefix" '+
         'style="display:none;position:absolute;filter:progid:DXImageTransform.Microsoft.Alpha(opacity=0);" ' +
         'src="javascript:false;" frameborder="0" scrolling="no"></iframe>');
        this.iefix = $(this.update.id+'_iefix');
      }
      if(this.iefix) setTimeout(this.fixIEOverlapping.bind(this), 50);
    },
  
    fixIEOverlapping: function() {
      Position.clone(this.update, this.iefix, {setTop:(!this.update.style.height)});
      this.iefix.style.zIndex = 1;
      this.update.style.zIndex = 2;
      Element.show(this.iefix);
    },
  
    hide: function() {
      this.stopIndicator();
      if(Element.getStyle(this.update, 'display')!='none') this.options.onHide(this.element, this.update);
      if(this.iefix) Element.hide(this.iefix);
    },
  
    startIndicator: function() {
      if(this.options.indicator) Element.show(this.options.indicator);
    },
  
    stopIndicator: function() {
      if(this.options.indicator) Element.hide(this.options.indicator);
    },
  
    onKeyPress: function(event) {
      if(this.active)
        switch(event.keyCode) {
         case Event.KEY_TAB:
         case Event.KEY_RETURN:
           this.selectEntry();
           Event.stop(event);
         case Event.KEY_ESC:
           this.hide();
           this.active = false;
           Event.stop(event);
           return;
         case Event.KEY_LEFT:
         case Event.KEY_RIGHT:
           return;
         case Event.KEY_UP:
           this.markPrevious();
           this.render();
           Event.stop(event);
           return;
         case Event.KEY_DOWN:
           this.markNext();
           this.render();
           Event.stop(event);
           return;
        }
       else
         if(event.keyCode==Event.KEY_TAB || event.keyCode==Event.KEY_RETURN ||
           (Prototype.Browser.WebKit > 0 && event.keyCode == 0)) return;
  
      this.changed = true;
      this.hasFocus = true;
  
      if(this.observer) clearTimeout(this.observer);
        this.observer =
          setTimeout(this.onObserverEvent.bind(this), this.options.frequency*1000);
    },
  
    activate: function() {
      this.changed = false;
      this.hasFocus = true;
      this.getUpdatedChoices();
    },
  
    onHover: function(event) {
      var element = Event.findElement(event, 'LI');
      if(this.index != element.autocompleteIndex)
      {
          this.index = element.autocompleteIndex;
          this.render();
      }
      Event.stop(event);
    },
  
    onClick: function(event) {
      var element = Event.findElement(event, 'LI');
      this.index = element.autocompleteIndex;
      this.selectEntry();
      this.hide();
    },
  
    onBlur: function(event) {
      // needed to make click events working
      setTimeout(this.hide.bind(this), 250);
      this.hasFocus = false;
      this.active = false;
    },
  
    render: function() {
      if(this.entryCount > 0) {
        for (var i = 0; i < this.entryCount; i++)
          this.index==i ?
            Element.addClassName(this.getEntry(i),"selected") :
            Element.removeClassName(this.getEntry(i),"selected");
        if(this.hasFocus) {
          this.show();
          this.active = true;
        }
      } else {
        this.active = false;
        this.hide();
      }
    },
  
    markPrevious: function() {
      if(this.index > 0) this.index--;
        else this.index = this.entryCount-1;
      //this.getEntry(this.index).scrollIntoView(true); useless
    },
  
    markNext: function() {
      if(this.index < this.entryCount-1) this.index++;
        else this.index = 0;
      this.getEntry(this.index).scrollIntoView(false);
    },
  
    getEntry: function(index) {
      return this.update.firstChild.childNodes[index];
    },
  
    getCurrentEntry: function() {
      return this.getEntry(this.index);
    },
  
    selectEntry: function() {
      this.active = false;
      this.updateElement(this.getCurrentEntry());
    },
  
    updateElement: function(selectedElement) {
      if (this.options.updateElement) {
        this.options.updateElement(selectedElement);
        return;
      }
      var value = '';
      if (this.options.select) {
        var nodes = $(selectedElement).select('.' + this.options.select) || [];
        if(nodes.length>0) value = Element.collectTextNodes(nodes[0], this.options.select);
      } else
        value = Element.collectTextNodesIgnoreClass(selectedElement, 'informal');
  
      var bounds = this.getTokenBounds();
      if (bounds[0] != -1) {
        var newValue = this.element.value.substr(0, bounds[0]);
        var whitespace = this.element.value.substr(bounds[0]).match(/^\s+/);
        if (whitespace)
          newValue += whitespace[0];
        this.element.value = newValue + value + this.element.value.substr(bounds[1]);
      } else {
        this.element.value = value;
      }
      this.oldElementValue = this.element.value;
      this.element.focus();
  
      if (this.options.afterUpdateElement)
        this.options.afterUpdateElement(this.element, selectedElement);
    },
  
    updateChoices: function(choices) {
      if(!this.changed && this.hasFocus) {
        this.update.innerHTML = choices;
        Element.cleanWhitespace(this.update);
        Element.cleanWhitespace(this.update.down());
  
        if(this.update.firstChild && this.update.down().childNodes) {
          this.entryCount =
            this.update.down().childNodes.length;
          for (var i = 0; i < this.entryCount; i++) {
            var entry = this.getEntry(i);
            entry.autocompleteIndex = i;
            this.addObservers(entry);
          }
        } else {
          this.entryCount = 0;
        }
  
        this.stopIndicator();
        this.index = 0;
  
        if(this.entryCount==1 && this.options.autoSelect) {
          this.selectEntry();
          this.hide();
        } else {
          this.render();
        }
      }
    },
  
    addObservers: function(element) {
      Event.observe(element, "mouseover", this.onHover.bindAsEventListener(this));
      Event.observe(element, "click", this.onClick.bindAsEventListener(this));
    },
  
    onObserverEvent: function() {
      this.changed = false;
      this.tokenBounds = null;
      if(this.getToken().length>=this.options.minChars) {
        this.getUpdatedChoices();
      } else {
        this.active = false;
        this.hide();
      }
      this.oldElementValue = this.element.value;
    },
  
    getToken: function() {
      var bounds = this.getTokenBounds();
      return this.element.value.substring(bounds[0], bounds[1]).strip();
    },
  
    getTokenBounds: function() {
      if (null != this.tokenBounds) return this.tokenBounds;
      var value = this.element.value;
      if (value.strip().empty()) return [-1, 0];
      var diff = arguments.callee.getFirstDifferencePos(value, this.oldElementValue);
      var offset = (diff == this.oldElementValue.length ? 1 : 0);
      var prevTokenPos = -1, nextTokenPos = value.length;
      var tp;
      for (var index = 0, l = this.options.tokens.length; index < l; ++index) {
        tp = value.lastIndexOf(this.options.tokens[index], diff + offset - 1);
        if (tp > prevTokenPos) prevTokenPos = tp;
        tp = value.indexOf(this.options.tokens[index], diff + offset);
        if (-1 != tp && tp < nextTokenPos) nextTokenPos = tp;
      }
      return (this.tokenBounds = [prevTokenPos + 1, nextTokenPos]);
    }
  });
  
  Autocompleter.Base.prototype.getTokenBounds.getFirstDifferencePos = function(newS, oldS) {
    var boundary = Math.min(newS.length, oldS.length);
    for (var index = 0; index < boundary; ++index)
      if (newS[index] != oldS[index])
        return index;
    return boundary;
  };
  
  Ajax.Autocompleter = Class.create(Autocompleter.Base, {
    initialize: function(element, update, url, options) {
      this.baseInitialize(element, update, options);
      this.options.asynchronous  = true;
      this.options.onComplete    = this.onComplete.bind(this);
      this.options.defaultParams = this.options.parameters || null;
      this.url                   = url;
    },
  
    getUpdatedChoices: function() {
      this.startIndicator();
  
      var entry = encodeURIComponent(this.options.paramName) + '=' +
        encodeURIComponent(this.getToken());
  
      this.options.parameters = this.options.callback ?
        this.options.callback(this.element, entry) : entry;
  
      if(this.options.defaultParams)
        this.options.parameters += '&' + this.options.defaultParams;
  
      new Ajax.Request(this.url, this.options);
    },
  
    onComplete: function(request) {
      this.updateChoices(request.responseText);
    }
  });
  
  // The local array autocompleter. Used when you'd prefer to
  // inject an array of autocompletion options into the page, rather
  // than sending out Ajax queries, which can be quite slow sometimes.
  //
  // The constructor takes four parameters. The first two are, as usual,
  // the id of the monitored textbox, and id of the autocompletion menu.
  // The third is the array you want to autocomplete from, and the fourth
  // is the options block.
  //
  // Extra local autocompletion options:
  // - choices - How many autocompletion choices to offer
  //
  // - partialSearch - If false, the autocompleter will match entered
  //                    text only at the beginning of strings in the
  //                    autocomplete array. Defaults to true, which will
  //                    match text at the beginning of any *word* in the
  //                    strings in the autocomplete array. If you want to
  //                    search anywhere in the string, additionally set
  //                    the option fullSearch to true (default: off).
  //
  // - fullSsearch - Search anywhere in autocomplete array strings.
  //
  // - partialChars - How many characters to enter before triggering
  //                   a partial match (unlike minChars, which defines
  //                   how many characters are required to do any match
  //                   at all). Defaults to 2.
  //
  // - ignoreCase - Whether to ignore case when autocompleting.
  //                 Defaults to true.
  //
  // It's possible to pass in a custom function as the 'selector'
  // option, if you prefer to write your own autocompletion logic.
  // In that case, the other options above will not apply unless
  // you support them.
  
  Autocompleter.Local = Class.create(Autocompleter.Base, {
    initialize: function(element, update, array, options) {
      this.baseInitialize(element, update, options);
      this.options.array = array;
    },
  
    getUpdatedChoices: function() {
      this.updateChoices(this.options.selector(this));
    },
  
    setOptions: function(options) {
      this.options = Object.extend({
        choices: 10,
        partialSearch: true,
        partialChars: 2,
        ignoreCase: true,
        fullSearch: false,
        selector: function(instance) {
          var ret       = []; // Beginning matches
          var partial   = []; // Inside matches
          var entry     = instance.getToken();
          var count     = 0;
  
          for (var i = 0; i < instance.options.array.length &&
            ret.length < instance.options.choices ; i++) {
  
            var elem = instance.options.array[i];
            var foundPos = instance.options.ignoreCase ?
              elem.toLowerCase().indexOf(entry.toLowerCase()) :
              elem.indexOf(entry);
  
            while (foundPos != -1) {
              if (foundPos == 0 && elem.length != entry.length) {
                ret.push("<li><strong>" + elem.substr(0, entry.length) + "</strong>" +
                  elem.substr(entry.length) + "</li>");
                break;
              } else if (entry.length >= instance.options.partialChars &&
                instance.options.partialSearch && foundPos != -1) {
                if (instance.options.fullSearch || /\s/.test(elem.substr(foundPos-1,1))) {
                  partial.push("<li>" + elem.substr(0, foundPos) + "<strong>" +
                    elem.substr(foundPos, entry.length) + "</strong>" + elem.substr(
                    foundPos + entry.length) + "</li>");
                  break;
                }
              }
  
              foundPos = instance.options.ignoreCase ?
                elem.toLowerCase().indexOf(entry.toLowerCase(), foundPos + 1) :
                elem.indexOf(entry, foundPos + 1);
  
            }
          }
          if (partial.length)
            ret = ret.concat(partial.slice(0, instance.options.choices - ret.length));
          return "<ul>" + ret.join('') + "</ul>";
        }
      }, options || { });
    }
  });
  
  // AJAX in-place editor and collection editor
  // Full rewrite by Christophe Porteneuve <tdd@tddsworld.com> (April 2007).
  
  // Use this if you notice weird scrolling problems on some browsers,
  // the DOM might be a bit confused when this gets called so do this
  // waits 1 ms (with setTimeout) until it does the activation
  Field.scrollFreeActivate = function(field) {
    setTimeout(function() {
      Field.activate(field);
    }, 1);
  };
  
  Ajax.InPlaceEditor = Class.create({
    initialize: function(element, url, options) {
      this.url = url;
      this.element = element = $(element);
      this.prepareOptions();
      this._controls = { };
      arguments.callee.dealWithDeprecatedOptions(options); // DEPRECATION LAYER!!!
      Object.extend(this.options, options || { });
      if (!this.options.formId && this.element.id) {
        this.options.formId = this.element.id + '-inplaceeditor';
        if ($(this.options.formId))
          this.options.formId = '';
      }
      if (this.options.externalControl)
        this.options.externalControl = $(this.options.externalControl);
      if (!this.options.externalControl)
        this.options.externalControlOnly = false;
      this._originalBackground = this.element.getStyle('background-color') || 'transparent';
      this.element.title = this.options.clickToEditText;
      this._boundCancelHandler = this.handleFormCancellation.bind(this);
      this._boundComplete = (this.options.onComplete || Prototype.emptyFunction).bind(this);
      this._boundFailureHandler = this.handleAJAXFailure.bind(this);
      this._boundSubmitHandler = this.handleFormSubmission.bind(this);
      this._boundWrapperHandler = this.wrapUp.bind(this);
      this.registerListeners();
    },
    checkForEscapeOrReturn: function(e) {
      if (!this._editing || e.ctrlKey || e.altKey || e.shiftKey) return;
      if (Event.KEY_ESC == e.keyCode)
        this.handleFormCancellation(e);
      else if (Event.KEY_RETURN == e.keyCode)
        this.handleFormSubmission(e);
    },
    createControl: function(mode, handler, extraClasses) {
      var control = this.options[mode + 'Control'];
      var text = this.options[mode + 'Text'];
      if ('button' == control) {
        var btn = document.createElement('input');
        btn.type = 'submit';
        btn.value = text;
        btn.className = 'editor_' + mode + '_button';
        if ('cancel' == mode)
          btn.onclick = this._boundCancelHandler;
        this._form.appendChild(btn);
        this._controls[mode] = btn;
      } else if ('link' == control) {
        var link = document.createElement('a');
        link.href = '#';
        link.appendChild(document.createTextNode(text));
        link.onclick = 'cancel' == mode ? this._boundCancelHandler : this._boundSubmitHandler;
        link.className = 'editor_' + mode + '_link';
        if (extraClasses)
          link.className += ' ' + extraClasses;
        this._form.appendChild(link);
        this._controls[mode] = link;
      }
    },
    createEditField: function() {
      var text = (this.options.loadTextURL ? this.options.loadingText : this.getText());
      var fld;
      if (1 >= this.options.rows && !/\r|\n/.test(this.getText())) {
        fld = document.createElement('input');
        fld.type = 'text';
        var size = this.options.size || this.options.cols || 0;
        if (0 < size) fld.size = size;
      } else {
        fld = document.createElement('textarea');
        fld.rows = (1 >= this.options.rows ? this.options.autoRows : this.options.rows);
        fld.cols = this.options.cols || 40;
      }
      fld.name = this.options.paramName;
      fld.value = text; // No HTML breaks conversion anymore
      fld.className = 'editor_field';
      if (this.options.submitOnBlur)
        fld.onblur = this._boundSubmitHandler;
      this._controls.editor = fld;
      if (this.options.loadTextURL)
        this.loadExternalText();
      this._form.appendChild(this._controls.editor);
    },
    createForm: function() {
      var ipe = this;
      function addText(mode, condition) {
        var text = ipe.options['text' + mode + 'Controls'];
        if (!text || condition === false) return;
        ipe._form.appendChild(document.createTextNode(text));
      };
      this._form = $(document.createElement('form'));
      this._form.id = this.options.formId;
      this._form.addClassName(this.options.formClassName);
      this._form.onsubmit = this._boundSubmitHandler;
      this.createEditField();
      if ('textarea' == this._controls.editor.tagName.toLowerCase())
        this._form.appendChild(document.createElement('br'));
      if (this.options.onFormCustomization)
        this.options.onFormCustomization(this, this._form);
      addText('Before', this.options.okControl || this.options.cancelControl);
      this.createControl('ok', this._boundSubmitHandler);
      addText('Between', this.options.okControl && this.options.cancelControl);
      this.createControl('cancel', this._boundCancelHandler, 'editor_cancel');
      addText('After', this.options.okControl || this.options.cancelControl);
    },
    destroy: function() {
      if (this._oldInnerHTML)
        this.element.innerHTML = this._oldInnerHTML;
      this.leaveEditMode();
      this.unregisterListeners();
    },
    enterEditMode: function(e) {
      if (this._saving || this._editing) return;
      this._editing = true;
      this.triggerCallback('onEnterEditMode');
      if (this.options.externalControl)
        this.options.externalControl.hide();
      this.element.hide();
      this.createForm();
      this.element.parentNode.insertBefore(this._form, this.element);
      if (!this.options.loadTextURL)
        this.postProcessEditField();
      if (e) Event.stop(e);
    },
    enterHover: function(e) {
      if (this.options.hoverClassName)
        this.element.addClassName(this.options.hoverClassName);
      if (this._saving) return;
      this.triggerCallback('onEnterHover');
    },
    getText: function() {
      return this.element.innerHTML.unescapeHTML();
    },
    handleAJAXFailure: function(transport) {
      this.triggerCallback('onFailure', transport);
      if (this._oldInnerHTML) {
        this.element.innerHTML = this._oldInnerHTML;
        this._oldInnerHTML = null;
      }
    },
    handleFormCancellation: function(e) {
      this.wrapUp();
      if (e) Event.stop(e);
    },
    handleFormSubmission: function(e) {
      var form = this._form;
      var value = $F(this._controls.editor);
      this.prepareSubmission();
      var params = this.options.callback(form, value) || '';
      if (Object.isString(params))
        params = params.toQueryParams();
      params.editorId = this.element.id;
      if (this.options.htmlResponse) {
        var options = Object.extend({ evalScripts: true }, this.options.ajaxOptions);
        Object.extend(options, {
          parameters: params,
          onComplete: this._boundWrapperHandler,
          onFailure: this._boundFailureHandler
        });
        new Ajax.Updater({ success: this.element }, this.url, options);
      } else {
        var options = Object.extend({ method: 'get' }, this.options.ajaxOptions);
        Object.extend(options, {
          parameters: params,
          onComplete: this._boundWrapperHandler,
          onFailure: this._boundFailureHandler
        });
        new Ajax.Request(this.url, options);
      }
      if (e) Event.stop(e);
    },
    leaveEditMode: function() {
      this.element.removeClassName(this.options.savingClassName);
      this.removeForm();
      this.leaveHover();
      this.element.style.backgroundColor = this._originalBackground;
      this.element.show();
      if (this.options.externalControl)
        this.options.externalControl.show();
      this._saving = false;
      this._editing = false;
      this._oldInnerHTML = null;
      this.triggerCallback('onLeaveEditMode');
    },
    leaveHover: function(e) {
      if (this.options.hoverClassName)
        this.element.removeClassName(this.options.hoverClassName);
      if (this._saving) return;
      this.triggerCallback('onLeaveHover');
    },
    loadExternalText: function() {
      this._form.addClassName(this.options.loadingClassName);
      this._controls.editor.disabled = true;
      var options = Object.extend({ method: 'get' }, this.options.ajaxOptions);
      Object.extend(options, {
        parameters: 'editorId=' + encodeURIComponent(this.element.id),
        onComplete: Prototype.emptyFunction,
        onSuccess: function(transport) {
          this._form.removeClassName(this.options.loadingClassName);
          var text = transport.responseText;
          if (this.options.stripLoadedTextTags)
            text = text.stripTags();
          this._controls.editor.value = text;
          this._controls.editor.disabled = false;
          this.postProcessEditField();
        }.bind(this),
        onFailure: this._boundFailureHandler
      });
      new Ajax.Request(this.options.loadTextURL, options);
    },
    postProcessEditField: function() {
      var fpc = this.options.fieldPostCreation;
      if (fpc)
        $(this._controls.editor)['focus' == fpc ? 'focus' : 'activate']();
    },
    prepareOptions: function() {
      this.options = Object.clone(Ajax.InPlaceEditor.DefaultOptions);
      Object.extend(this.options, Ajax.InPlaceEditor.DefaultCallbacks);
      [this._extraDefaultOptions].flatten().compact().each(function(defs) {
        Object.extend(this.options, defs);
      }.bind(this));
    },
    prepareSubmission: function() {
      this._saving = true;
      this.removeForm();
      this.leaveHover();
      this.showSaving();
    },
    registerListeners: function() {
      this._listeners = { };
      var listener;
      $H(Ajax.InPlaceEditor.Listeners).each(function(pair) {
        listener = this[pair.value].bind(this);
        this._listeners[pair.key] = listener;
        if (!this.options.externalControlOnly)
          this.element.observe(pair.key, listener);
        if (this.options.externalControl)
          this.options.externalControl.observe(pair.key, listener);
      }.bind(this));
    },
    removeForm: function() {
      if (!this._form) return;
      this._form.remove();
      this._form = null;
      this._controls = { };
    },
    showSaving: function() {
      this._oldInnerHTML = this.element.innerHTML;
      this.element.innerHTML = this.options.savingText;
      this.element.addClassName(this.options.savingClassName);
      this.element.style.backgroundColor = this._originalBackground;
      this.element.show();
    },
    triggerCallback: function(cbName, arg) {
      if ('function' == typeof this.options[cbName]) {
        this.options[cbName](this, arg);
      }
    },
    unregisterListeners: function() {
      $H(this._listeners).each(function(pair) {
        if (!this.options.externalControlOnly)
          this.element.stopObserving(pair.key, pair.value);
        if (this.options.externalControl)
          this.options.externalControl.stopObserving(pair.key, pair.value);
      }.bind(this));
    },
    wrapUp: function(transport) {
      this.leaveEditMode();
      // Can't use triggerCallback due to backward compatibility: requires
      // binding + direct element
      this._boundComplete(transport, this.element);
    }
  });
  
  Object.extend(Ajax.InPlaceEditor.prototype, {
    dispose: Ajax.InPlaceEditor.prototype.destroy
  });
  
  Ajax.InPlaceCollectionEditor = Class.create(Ajax.InPlaceEditor, {
    initialize: function($super, element, url, options) {
      this._extraDefaultOptions = Ajax.InPlaceCollectionEditor.DefaultOptions;
      $super(element, url, options);
    },
  
    createEditField: function() {
      var list = document.createElement('select');
      list.name = this.options.paramName;
      list.size = 1;
      this._controls.editor = list;
      this._collection = this.options.collection || [];
      if (this.options.loadCollectionURL)
        this.loadCollection();
      else
        this.checkForExternalText();
      this._form.appendChild(this._controls.editor);
    },
  
    loadCollection: function() {
      this._form.addClassName(this.options.loadingClassName);
      this.showLoadingText(this.options.loadingCollectionText);
      var options = Object.extend({ method: 'get' }, this.options.ajaxOptions);
      Object.extend(options, {
        parameters: 'editorId=' + encodeURIComponent(this.element.id),
        onComplete: Prototype.emptyFunction,
        onSuccess: function(transport) {
          var js = transport.responseText.strip();
          if (!/^\[.*\]$/.test(js)) // TODO: improve sanity check
            throw('Server returned an invalid collection representation.');
          this._collection = eval(js);
          this.checkForExternalText();
        }.bind(this),
        onFailure: this.onFailure
      });
      new Ajax.Request(this.options.loadCollectionURL, options);
    },
  
    showLoadingText: function(text) {
      this._controls.editor.disabled = true;
      var tempOption = this._controls.editor.firstChild;
      if (!tempOption) {
        tempOption = document.createElement('option');
        tempOption.value = '';
        this._controls.editor.appendChild(tempOption);
        tempOption.selected = true;
      }
      tempOption.update((text || '').stripScripts().stripTags());
    },
  
    checkForExternalText: function() {
      this._text = this.getText();
      if (this.options.loadTextURL)
        this.loadExternalText();
      else
        this.buildOptionList();
    },
  
    loadExternalText: function() {
      this.showLoadingText(this.options.loadingText);
      var options = Object.extend({ method: 'get' }, this.options.ajaxOptions);
      Object.extend(options, {
        parameters: 'editorId=' + encodeURIComponent(this.element.id),
        onComplete: Prototype.emptyFunction,
        onSuccess: function(transport) {
          this._text = transport.responseText.strip();
          this.buildOptionList();
        }.bind(this),
        onFailure: this.onFailure
      });
      new Ajax.Request(this.options.loadTextURL, options);
    },
  
    buildOptionList: function() {
      this._form.removeClassName(this.options.loadingClassName);
      this._collection = this._collection.map(function(entry) {
        return 2 === entry.length ? entry : [entry, entry].flatten();
      });
      var marker = ('value' in this.options) ? this.options.value : this._text;
      var textFound = this._collection.any(function(entry) {
        return entry[0] == marker;
      }.bind(this));
      this._controls.editor.update('');
      var option;
      this._collection.each(function(entry, index) {
        option = document.createElement('option');
        option.value = entry[0];
        option.selected = textFound ? entry[0] == marker : 0 == index;
        option.appendChild(document.createTextNode(entry[1]));
        this._controls.editor.appendChild(option);
      }.bind(this));
      this._controls.editor.disabled = false;
      Field.scrollFreeActivate(this._controls.editor);
    }
  });
  
  //**** DEPRECATION LAYER FOR InPlace[Collection]Editor! ****
  //**** This only  exists for a while,  in order to  let ****
  //**** users adapt to  the new API.  Read up on the new ****
  //**** API and convert your code to it ASAP!            ****
  
  Ajax.InPlaceEditor.prototype.initialize.dealWithDeprecatedOptions = function(options) {
    if (!options) return;
    function fallback(name, expr) {
      if (name in options || expr === undefined) return;
      options[name] = expr;
    };
    fallback('cancelControl', (options.cancelLink ? 'link' : (options.cancelButton ? 'button' :
      options.cancelLink == options.cancelButton == false ? false : undefined)));
    fallback('okControl', (options.okLink ? 'link' : (options.okButton ? 'button' :
      options.okLink == options.okButton == false ? false : undefined)));
    fallback('highlightColor', options.highlightcolor);
    fallback('highlightEndColor', options.highlightendcolor);
  };
  
  Object.extend(Ajax.InPlaceEditor, {
    DefaultOptions: {
      ajaxOptions: { },
      autoRows: 3,                                // Use when multi-line w/ rows == 1
      cancelControl: 'link',                      // 'link'|'button'|false
      cancelText: 'cancel',
      clickToEditText: 'Click to edit',
      externalControl: null,                      // id|elt
      externalControlOnly: false,
      fieldPostCreation: 'activate',              // 'activate'|'focus'|false
      formClassName: 'inplaceeditor-form',
      formId: null,                               // id|elt
      highlightColor: '#ffff99',
      highlightEndColor: '#ffffff',
      hoverClassName: '',
      htmlResponse: true,
      loadingClassName: 'inplaceeditor-loading',
      loadingText: 'Loading...',
      okControl: 'button',                        // 'link'|'button'|false
      okText: 'ok',
      paramName: 'value',
      rows: 1,                                    // If 1 and multi-line, uses autoRows
      savingClassName: 'inplaceeditor-saving',
      savingText: 'Saving...',
      size: 0,
      stripLoadedTextTags: false,
      submitOnBlur: false,
      textAfterControls: '',
      textBeforeControls: '',
      textBetweenControls: ''
    },
    DefaultCallbacks: {
      callback: function(form) {
        return Form.serialize(form);
      },
      onComplete: function(transport, element) {
        // For backward compatibility, this one is bound to the IPE, and passes
        // the element directly.  It was too often customized, so we don't break it.
        new Effect.Highlight(element, {
          startcolor: this.options.highlightColor, keepBackgroundImage: true });
      },
      onEnterEditMode: null,
      onEnterHover: function(ipe) {
        ipe.element.style.backgroundColor = ipe.options.highlightColor;
        if (ipe._effect)
          ipe._effect.cancel();
      },
      onFailure: function(transport, ipe) {
        alert('Error communication with the server: ' + transport.responseText.stripTags());
      },
      onFormCustomization: null, // Takes the IPE and its generated form, after editor, before controls.
      onLeaveEditMode: null,
      onLeaveHover: function(ipe) {
        ipe._effect = new Effect.Highlight(ipe.element, {
          startcolor: ipe.options.highlightColor, endcolor: ipe.options.highlightEndColor,
          restorecolor: ipe._originalBackground, keepBackgroundImage: true
        });
      }
    },
    Listeners: {
      click: 'enterEditMode',
      keydown: 'checkForEscapeOrReturn',
      mouseover: 'enterHover',
      mouseout: 'leaveHover'
    }
  });
  
  Ajax.InPlaceCollectionEditor.DefaultOptions = {
    loadingCollectionText: 'Loading options...'
  };
  
  // Delayed observer, like Form.Element.Observer,
  // but waits for delay after last key input
  // Ideal for live-search fields
  
  Form.Element.DelayedObserver = Class.create({
    initialize: function(element, delay, callback) {
      this.delay     = delay || 0.5;
      this.element   = $(element);
      this.callback  = callback;
      this.timer     = null;
      this.lastValue = $F(this.element);
      Event.observe(this.element,'keyup',this.delayedListener.bindAsEventListener(this));
    },
    delayedListener: function(event) {
      if(this.lastValue == $F(this.element)) return;
      if(this.timer) clearTimeout(this.timer);
      this.timer = setTimeout(this.onTimerEvent.bind(this), this.delay * 1000);
      this.lastValue = $F(this.element);
    },
    onTimerEvent: function() {
      this.timer = null;
      this.callback(this.element, $F(this.element));
    }
  });