// script.aculo.us controls.js v1.6.4, Wed Sep 06 11:30:58 CEST 2006

// Copyright (c) 2005 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
//           (c) 2005 Ivan Krstic (http://blogs.law.harvard.edu/ivan)
//           (c) 2005 Jon Tirsen (http://www.tirsen.com)
// Contributors:
//  Richard Livsey
//  Rahul Bhargava
//  Rob Wills
//
// See scriptaculous.js for full license.

// 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 = function() {};
Autocompleter.Base.prototype = {
  baseInitialize: function(element, update, options) {
	this.element     = $(element);
	this.update      = $(update);
	this.hasFocus    = false;
	this.changed     = false;
	this.active      = false;
	this.index       = 0;
	this.entryCount  = 0;

	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);

	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, "keypress", this.onKeyPress.bindAsEventListener(this));
  },

  show: function() {
	if(Element.getStyle(this.update, 'display')=='none') this.options.onShow(this.element, this.update);
	if(!this.iefix &&
	  (navigator.appVersion.indexOf('MSIE')>0) &&
	  (navigator.userAgent.indexOf('Opera')<0) &&
	  (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();
		 if(navigator.appVersion.indexOf('AppleWebKit')>0) Event.stop(event);
		 return;
	   case Event.KEY_DOWN:
		 this.markNext();
		 this.render();
		 if(navigator.appVersion.indexOf('AppleWebKit')>0) Event.stop(event);
		 return;
	  }
	 else
	   if(event.keyCode==Event.KEY_TAB || event.keyCode==Event.KEY_RETURN ||
		 (navigator.appVersion.indexOf('AppleWebKit') > 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);
  },

  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 = document.getElementsByClassName(this.options.select, selectedElement) || [];
	  if(nodes.length>0) value = Element.collectTextNodes(nodes[0], this.options.select);
	} else
	  value = Element.collectTextNodesIgnoreClass(selectedElement, 'informal');

	var lastTokenPos = this.findLastToken();
	if (lastTokenPos != -1) {
	  var newValue = this.element.value.substr(0, lastTokenPos + 1);
	  var whitespace = this.element.value.substr(lastTokenPos + 1).match(/^\s+/);
	  if (whitespace)
		newValue += whitespace[0];
	  this.element.value = newValue + value;
	} else {
	  this.element.value = 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.firstChild);

	  if(this.update.firstChild && this.update.firstChild.childNodes) {
		this.entryCount =
		  this.update.firstChild.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;
	if(this.getToken().length>=this.options.minChars) {
	  this.startIndicator();
	  this.getUpdatedChoices();
	} else {
	  this.active = false;
	  this.hide();
	}
  },

  getToken: function() {
	var tokenPos = this.findLastToken();
	if (tokenPos != -1)
	  var ret = this.element.value.substr(tokenPos + 1).replace(/^\s+/,'').replace(/\s+$/,'');
	else
	  var ret = this.element.value;

	return /\n/.test(ret) ? '' : ret;
  },

  findLastToken: function() {
	var lastTokenPos = -1;

	for (var i=0; i<this.options.tokens.length; i++) {
	  var thisTokenPos = this.element.value.lastIndexOf(this.options.tokens[i]);
	  if (thisTokenPos > lastTokenPos)
		lastTokenPos = thisTokenPos;
	}
	return lastTokenPos;
  }
}

Ajax.Autocompleter = Class.create();
Object.extend(Object.extend(Ajax.Autocompleter.prototype, Autocompleter.Base.prototype), {
  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() {
	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.Local.prototype = Object.extend(new 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
//
// see documentation on http://wiki.script.aculo.us/scriptaculous/show/Ajax.InPlaceEditor

// 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();
Ajax.InPlaceEditor.defaultHighlightColor = "#FFFF99";
Ajax.InPlaceEditor.prototype = {
  initialize: function(element, url, options) {
	this.url = url;
	this.element = $(element);

	this.options = Object.extend({
	  okButton: true,
	  okText: "ok",
	  cancelLink: true,
	  cancelText: "cancel",
	  savingText: "Saving...",
	  clickToEditText: "Click to edit",
	  okText: "ok",
	  rows: 1,
	  onComplete: function(transport, element) {
		new Effect.Highlight(element, {startcolor: this.options.highlightcolor});
	  },
	  onFailure: function(transport) {
		alert("Error communicating with the server: " + transport.responseText.stripTags());
	  },
	  callback: function(form) {
		return Form.serialize(form);
	  },
	  handleLineBreaks: true,
	  loadingText: 'Loading...',
	  savingClassName: 'inplaceeditor-saving',
	  loadingClassName: 'inplaceeditor-loading',
	  formClassName: 'inplaceeditor-form',
	  highlightcolor: Ajax.InPlaceEditor.defaultHighlightColor,
	  highlightendcolor: "#FFFFFF",
	  externalControl: null,
	  submitOnBlur: false,
	  ajaxOptions: {},
	  evalScripts: false
	}, options || {});

	if(!this.options.formId && this.element.id) {
	  this.options.formId = this.element.id + "-inplaceeditor";
	  if ($(this.options.formId)) {
		// there's already a form with that name, don't specify an id
		this.options.formId = null;
	  }
	}

	if (this.options.externalControl) {
	  this.options.externalControl = $(this.options.externalControl);
	}

	this.originalBackground = Element.getStyle(this.element, 'background-color');
	if (!this.originalBackground) {
	  this.originalBackground = "transparent";
	}

	this.element.title = this.options.clickToEditText;

	this.onclickListener = this.enterEditMode.bindAsEventListener(this);
	this.mouseoverListener = this.enterHover.bindAsEventListener(this);
	this.mouseoutListener = this.leaveHover.bindAsEventListener(this);
	Event.observe(this.element, 'click', this.onclickListener);
	Event.observe(this.element, 'mouseover', this.mouseoverListener);
	Event.observe(this.element, 'mouseout', this.mouseoutListener);
	if (this.options.externalControl) {
	  Event.observe(this.options.externalControl, 'click', this.onclickListener);
	  Event.observe(this.options.externalControl, 'mouseover', this.mouseoverListener);
	  Event.observe(this.options.externalControl, 'mouseout', this.mouseoutListener);
	}
  },
  enterEditMode: function(evt) {
	if (this.saving) return;
	if (this.editing) return;
	this.editing = true;
	this.onEnterEditMode();
	if (this.options.externalControl) {
	  Element.hide(this.options.externalControl);
	}
	Element.hide(this.element);
	this.createForm();
	this.element.parentNode.insertBefore(this.form, this.element);
	if (!this.options.loadTextURL) Field.scrollFreeActivate(this.editField);
	// stop the event to avoid a page refresh in Safari
	if (evt) {
	  Event.stop(evt);
	}
	return false;
  },
  createForm: function() {
	this.form = document.createElement("form");
	this.form.id = this.options.formId;
	Element.addClassName(this.form, this.options.formClassName)
	this.form.onsubmit = this.onSubmit.bind(this);

	this.createEditField();

	if (this.options.textarea) {
	  var br = document.createElement("br");
	  this.form.appendChild(br);
	}

	if (this.options.okButton) {
	  okButton = document.createElement("input");
	  okButton.type = "submit";
	  okButton.value = this.options.okText;
	  okButton.className = 'editor_ok_button';
	  this.form.appendChild(okButton);
	}

	if (this.options.cancelLink) {
	  cancelLink = document.createElement("a");
	  cancelLink.href = "#";
	  cancelLink.appendChild(document.createTextNode(this.options.cancelText));
	  cancelLink.onclick = this.onclickCancel.bind(this);
	  cancelLink.className = 'editor_cancel';
	  this.form.appendChild(cancelLink);
	}
  },
  hasHTMLLineBreaks: function(string) {
	if (!this.options.handleLineBreaks) return false;
	return string.match(/<br/i) || string.match(/<p>/i);
  },
  convertHTMLLineBreaks: function(string) {
	return string.replace(/<br>/gi, "\n").replace(/<br\/>/gi, "\n").replace(/<\/p>/gi, "\n").replace(/<p>/gi, "");
  },
  createEditField: function() {
	var text;
	if(this.options.loadTextURL) {
	  text = this.options.loadingText;
	} else {
	  text = this.getText();
	}

	var obj = this;

	if (this.options.rows == 1 && !this.hasHTMLLineBreaks(text)) {
	  this.options.textarea = false;
	  var textField = document.createElement("input");
	  textField.obj = this;
	  textField.type = "text";
	  textField.name = "value";
	  textField.value = text;
	  textField.style.backgroundColor = this.options.highlightcolor;
	  textField.className = 'editor_field';
	  var size = this.options.size || this.options.cols || 0;
	  if (size != 0) textField.size = size;
	  if (this.options.submitOnBlur)
		textField.onblur = this.onSubmit.bind(this);
	  this.editField = textField;
	} else {
	  this.options.textarea = true;
	  var textArea = document.createElement("textarea");
	  textArea.obj = this;
	  textArea.name = "value";
	  textArea.value = this.convertHTMLLineBreaks(text);
	  textArea.rows = this.options.rows;
	  textArea.cols = this.options.cols || 40;
	  textArea.className = 'editor_field';
	  if (this.options.submitOnBlur)
		textArea.onblur = this.onSubmit.bind(this);
	  this.editField = textArea;
	}

	if(this.options.loadTextURL) {
	  this.loadExternalText();
	}
	this.form.appendChild(this.editField);
  },
  getText: function() {
	return this.element.innerHTML;
  },
  loadExternalText: function() {
	Element.addClassName(this.form, this.options.loadingClassName);
	this.editField.disabled = true;
	new Ajax.Request(
	  this.options.loadTextURL,
	  Object.extend({
		asynchronous: true,
		onComplete: this.onLoadedExternalText.bind(this)
	  }, this.options.ajaxOptions)
	);
  },
  onLoadedExternalText: function(transport) {
	Element.removeClassName(this.form, this.options.loadingClassName);
	this.editField.disabled = false;
	this.editField.value = transport.responseText.stripTags();
	Field.scrollFreeActivate(this.editField);
  },
  onclickCancel: function() {
	this.onComplete();
	this.leaveEditMode();
	return false;
  },
  onFailure: function(transport) {
	this.options.onFailure(transport);
	if (this.oldInnerHTML) {
	  this.element.innerHTML = this.oldInnerHTML;
	  this.oldInnerHTML = null;
	}
	return false;
  },
  onSubmit: function() {
	// onLoading resets these so we need to save them away for the Ajax call
	var form = this.form;
	var value = this.editField.value;

	// do this first, sometimes the ajax call returns before we get a chance to switch on Saving...
	// which means this will actually switch on Saving... *after* we've left edit mode causing Saving...
	// to be displayed indefinitely
	this.onLoading();

	if (this.options.evalScripts) {
	  new Ajax.Request(
		this.url, Object.extend({
		  parameters: this.options.callback(form, value),
		  onComplete: this.onComplete.bind(this),
		  onFailure: this.onFailure.bind(this),
		  asynchronous:true,
		  evalScripts:true
		}, this.options.ajaxOptions));
	} else  {
	  new Ajax.Updater(
		{ success: this.element,
		  // don't update on failure (this could be an option)
		  failure: null },
		this.url, Object.extend({
		  parameters: this.options.callback(form, value),
		  onComplete: this.onComplete.bind(this),
		  onFailure: this.onFailure.bind(this)
		}, this.options.ajaxOptions));
	}
	// stop the event to avoid a page refresh in Safari
	if (arguments.length > 1) {
	  Event.stop(arguments[0]);
	}
	return false;
  },
  onLoading: function() {
	this.saving = true;
	this.removeForm();
	this.leaveHover();
	this.showSaving();
  },
  showSaving: function() {
	this.oldInnerHTML = this.element.innerHTML;
	this.element.innerHTML = this.options.savingText;
	Element.addClassName(this.element, this.options.savingClassName);
	this.element.style.backgroundColor = this.originalBackground;
	Element.show(this.element);
  },
  removeForm: function() {
	if(this.form) {
	  if (this.form.parentNode) Element.remove(this.form);
	  this.form = null;
	}
  },
  enterHover: function() {
	if (this.saving) return;
	this.element.style.backgroundColor = this.options.highlightcolor;
	if (this.effect) {
	  this.effect.cancel();
	}
	Element.addClassName(this.element, this.options.hoverClassName)
  },
  leaveHover: function() {
	if (this.options.backgroundColor) {
	  this.element.style.backgroundColor = this.oldBackground;
	}
	Element.removeClassName(this.element, this.options.hoverClassName)
	if (this.saving) return;
	this.effect = new Effect.Highlight(this.element, {
	  startcolor: this.options.highlightcolor,
	  endcolor: this.options.highlightendcolor,
	  restorecolor: this.originalBackground
	});
  },
  leaveEditMode: function() {
	Element.removeClassName(this.element, this.options.savingClassName);
	this.removeForm();
	this.leaveHover();
	this.element.style.backgroundColor = this.originalBackground;
	Element.show(this.element);
	if (this.options.externalControl) {
	  Element.show(this.options.externalControl);
	}
	this.editing = false;
	this.saving = false;
	this.oldInnerHTML = null;
	this.onLeaveEditMode();
  },
  onComplete: function(transport) {
	this.leaveEditMode();
	this.options.onComplete.bind(this)(transport, this.element);
  },
  onEnterEditMode: function() {},
  onLeaveEditMode: function() {},
  dispose: function() {
	if (this.oldInnerHTML) {
	  this.element.innerHTML = this.oldInnerHTML;
	}
	this.leaveEditMode();
	Event.stopObserving(this.element, 'click', this.onclickListener);
	Event.stopObserving(this.element, 'mouseover', this.mouseoverListener);
	Event.stopObserving(this.element, 'mouseout', this.mouseoutListener);
	if (this.options.externalControl) {
	  Event.stopObserving(this.options.externalControl, 'click', this.onclickListener);
	  Event.stopObserving(this.options.externalControl, 'mouseover', this.mouseoverListener);
	  Event.stopObserving(this.options.externalControl, 'mouseout', this.mouseoutListener);
	}
  }
};

Ajax.InPlaceCollectionEditor = Class.create();
Object.extend(Ajax.InPlaceCollectionEditor.prototype, Ajax.InPlaceEditor.prototype);
Object.extend(Ajax.InPlaceCollectionEditor.prototype, {
  createEditField: function() {
	if (!this.cached_selectTag) {
	  var selectTag = document.createElement("select");
	  var collection = this.options.collection || [];
	  var optionTag;
	  collection.each(function(e,i) {
		optionTag = document.createElement("option");
		optionTag.value = (e instanceof Array) ? e[0] : e;
		if((typeof this.options.value == 'undefined') &&
		  ((e instanceof Array) ? this.element.innerHTML == e[1] : e == optionTag.value)) optionTag.selected = true;
		if(this.options.value==optionTag.value) optionTag.selected = true;
		optionTag.appendChild(document.createTextNode((e instanceof Array) ? e[1] : e));
		selectTag.appendChild(optionTag);
	  }.bind(this));
	  this.cached_selectTag = selectTag;
	}

	this.editField = this.cached_selectTag;
	if(this.options.loadTextURL) this.loadExternalText();
	this.form.appendChild(this.editField);
	this.options.callback = function(form, value) {
	  return "value=" + encodeURIComponent(value);
	}
  }
});

// Delayed observer, like Form.Element.Observer,
// but waits for delay after last key input
// Ideal for live-search fields

Form.Element.DelayedObserver = Class.create();
Form.Element.DelayedObserver.prototype = {
  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));
  }
};