// script.aculo.us controls.js v1.8.1, Thu Jan 03 22:07:12 -0500 2008

// Copyright (c) 2005-2007 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
//           (c) 2005-2007 Ivan Krstic (http://blogs.law.harvard.edu/ivan)
//           (c) 2005-2007 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,event);
			},

			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());
				// jisung: just fire the submit method. whenever the selection is 
				// changed of the enter key was pressed.
				this.element.form.submit();
			},

			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();
					// jisung: when the list is updated, none of the element is selected
					// by default. 
					// this.index = 0;
					this.index = -1;
      
					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(event) {
				this.changed = false;   
				this.tokenBounds = null;
				
				// jisung: Since the string length of a single korean Cho-Sung 
				// character is the same as a combination of a Cho-Sung and Joong-Sung
				// character, we cannot use the getToken().length as an indicator
				// of a changes.
				// original: if(this.getToken().length>=this.options.minChars) {
				if(this.getToken() != this.oldElementValue.strip()) {
					this.getUpdatedChoices();
				} else {
					// this.active = false;
					if (this.getToken().length == 0)
						this.hide();
				}
				this.oldElementValue = this.element.value;
				// jisung: added to fix a firefox korean input bug (firefox doesn't fire
				// onKeyPress/onKeyDown/onKeyUp event while korean characters are typed
				// in.
				this.observer = 
				setTimeout(this.onObserverEvent.bind(this), this.options.frequency*1000);
			},

			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;
			},
			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));
		}
	});