// script.aculo.us controls.js v1.8.0, Tue Nov 06 15:01:40 +0300 2007

// 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, 'keypress', 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();
					if (Prototype.Browser.WebKit) Event.stop(event);
					return;
				case Event.KEY_DOWN:
					this.markNext();
					this.render();
					if (Prototype.Browser.WebKit) 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);
	},

	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;
	},
	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));
	}
});