/*
 * jQuery UI selectmenu version 1.2.0
 *
 * Copyright (c) 2009 AUTHORS.txt (http://jqueryui.com/about)
 * Dual licensed under the MIT (MIT-LICENSE.txt)
 * and GPL (GPL-LICENSE.txt) licenses.
 *
 * http://docs.jquery.com/UI
 * https://github.com/fnagel/jquery-ui/wiki/Selectmenu
 */

(function($) {

	$.widget("ui.selectmenu", {
		getter: "value",
		version: "1.9",
		eventPrefix: "selectmenu",
		options: {
			transferClasses: true,
			typeAhead: 1000,
			style: 'dropdown',
			positionOptions: {
				my: "left top",
				at: "left bottom",
				offset: null
			},
			width: null,
			menuWidth: null,
			handleWidth: 26,
			maxHeight: null,
			icons: null,
			format: null,
			bgImage: function() {},
			wrapperElement: "<div />"
		},

		_create: function() {
			var self = this, o = this.options;

			// set a default id value, generate a new random one if not set by developer
			var selectmenuId = (this.element.attr( 'id' ) || 'ui-selectmenu-' + Math.random().toString( 16 ).slice( 2, 10 )).replace(':', '\\:');

			// quick array of button and menu id's
			this.ids = [ selectmenuId, selectmenuId + '-button', selectmenuId + '-menu' ];

			// define safe mouseup for future toggling
			this._safemouseup = true;
			this.isOpen = false;

			// create menu button wrapper
			this.newelement = $( '<a />', {
				'class': this.widgetBaseClass + ' ui-widget ui-state-default ui-corner-all',
				'id' : this.ids[ 1 ],
				'role': 'button',
				'href': '#nogo',
				'tabindex': this.element.attr( 'disabled' ) ? 1 : 0,
				'aria-haspopup': true,
				'aria-owns': this.ids[ 2 ]
			});
			this.newelementWrap = $( o.wrapperElement )
				.append( this.newelement )
				.insertAfter( this.element );

			// transfer tabindex
			var tabindex = this.element.attr( 'tabindex' );
			if ( tabindex ) {
				this.newelement.attr( 'tabindex', tabindex );
			}

			// save reference to select in data for ease in calling methods
			this.newelement.data( 'selectelement', this.element );

			// menu icon
			this.selectmenuIcon = $( '<span class="' + this.widgetBaseClass + '-icon ui-icon"></span>' )
				.prependTo( this.newelement );

			// append status span to button
			this.newelement.prepend( '<span class="' + self.widgetBaseClass + '-status" />' );

			// make associated form label trigger focus
			this.element.bind({
				'click.selectmenu':  function( event ) {
					self.newelement.focus();
					event.preventDefault();
				}
			});

			// click toggle for menu visibility
			this.newelement
				.bind('mousedown.selectmenu', function(event) {
				self._toggle(event, true);
				// make sure a click won't open/close instantly
				if (o.style == "popup") {
					self._safemouseup = false;
					setTimeout(function() { self._safemouseup = true; }, 300);
				}
				return false;
			})
				.bind('click.selectmenu', function() {
					return false;
				})
				.bind("keydown.selectmenu", function(event) {
					var ret = false;
					switch (event.keyCode) {
						case $.ui.keyCode.ENTER:
							ret = true;
							break;
						case $.ui.keyCode.SPACE:
							self._toggle(event);
							break;
						case $.ui.keyCode.UP:
							if (event.altKey) {
								self.open(event);
							} else {
								self._moveSelection(-1);
							}
							break;
						case $.ui.keyCode.DOWN:
							if (event.altKey) {
								self.open(event);
							} else {
								self._moveSelection(1);
							}
							break;
						case $.ui.keyCode.LEFT:
							self._moveSelection(-1);
							break;
						case $.ui.keyCode.RIGHT:
							self._moveSelection(1);
							break;
						case $.ui.keyCode.TAB:
							ret = true;
							break;
						case $.ui.keyCode.HOME:
							self.index(0);
							break;
						default:
							ret = true;
					}
					return ret;
				})
				.bind('keypress.selectmenu', function(event) {
					if (event.which > 0) {
						self._typeAhead(event.which, 'mouseup');
					}
					return true;
				})
				.bind('mouseover.selectmenu focus.selectmenu', function() {
					if (!o.disabled) {
						$(this).addClass(self.widgetBaseClass + '-focus ui-state-hover');
					}
				})
				.bind('mouseout.selectmenu blur.selectmenu', function() {
					if (!o.disabled) {
						$(this).removeClass(self.widgetBaseClass + '-focus ui-state-hover');
					}
				});

			// document click closes menu
			$(document).bind("mousedown.selectmenu-" + this.ids[0], function(event) {
				if ( self.isOpen ) {
					self.close( event );
				}
			});

			// change event on original selectmenu
			this.element
				.bind("click.selectmenu", function() {
				self._refreshValue();
			})
				// FIXME: newelement can be null under unclear circumstances in IE8
				// TODO not sure if this is still a problem (fnagel 20.03.11)
				.bind("focus.selectmenu", function() {
					if (self.newelement) {
						self.newelement[0].focus();
					}
				});

			// set width when not set via options
			if (!o.width) {
				o.width = this.element.outerWidth();
			}
			// set menu button width
			this.newelement.width(o.width);

			// hide original selectmenu element
			this.element.hide();

			// create menu portion, append to body
			this.list = $( '<ul />', {
				'class': 'ui-widget ui-widget-content',
				'aria-hidden': true,
				'role': 'listbox',
				'aria-labelledby': this.ids[1],
				'id': this.ids[2]
			});
			this.listWrap = $( o.wrapperElement )
				.addClass( self.widgetBaseClass + '-menu' )
				.append( this.list )
				.appendTo( 'body' );

			// transfer menu click to menu button
			this.list
				.bind("keydown.selectmenu", function(event) {
				var ret = false;
				switch (event.keyCode) {
					case $.ui.keyCode.UP:
						if (event.altKey) {
							self.close(event, true);
						} else {
							self._moveFocus(-1);
						}
						break;
					case $.ui.keyCode.DOWN:
						if (event.altKey) {
							self.close(event, true);
						} else {
							self._moveFocus(1);
						}
						break;
					case $.ui.keyCode.LEFT:
						self._moveFocus(-1);
						break;
					case $.ui.keyCode.RIGHT:
						self._moveFocus(1);
						break;
					case $.ui.keyCode.HOME:
						self._moveFocus(':first');
						break;
					case $.ui.keyCode.PAGE_UP:
						self._scrollPage('up');
						break;
					case $.ui.keyCode.PAGE_DOWN:
						self._scrollPage('down');
						break;
					case $.ui.keyCode.END:
						self._moveFocus(':last');
						break;
					case $.ui.keyCode.ENTER:
					case $.ui.keyCode.SPACE:
						self.close(event, true);
						$(event.target).parents('li:eq(0)').trigger('mouseup');
						break;
					case $.ui.keyCode.TAB:
						ret = true;
						self.close(event, true);
						$(event.target).parents('li:eq(0)').trigger('mouseup');
						break;
					case $.ui.keyCode.ESCAPE:
						self.close(event, true);
						break;
					default:
						ret = true;
				}
				return ret;
			})
				.bind('keypress.selectmenu', function(event) {
					if (event.which > 0) {
						self._typeAhead(event.which, 'focus');
					}
					return true;
				})
				// this allows for using the scrollbar in an overflowed list
				.bind( 'mousedown.selectmenu mouseup.selectmenu', function() { return false; });

			// needed when window is resized
			$(window).bind( "resize.selectmenu-" + this.ids[0], $.proxy( self.close, this ) );
		},

		_init: function() {
			var self = this, o = this.options;

			// serialize selectmenu element options
			var selectOptionData = [];
			this.element
				.find('option')
				.each(function() {
					var opt = $(this);
					selectOptionData.push({
						value: opt.attr('value'),
						text: self._formatText(opt.text()),
						selected: opt.attr('selected'),
						disabled: opt.attr('disabled'),
						classes: opt.attr('class'),
						typeahead: opt.attr('typeahead'),
						parentOptGroup: opt.parent('optgroup'),
						bgImage: o.bgImage.call(opt)
					});
				});

			// active state class is only used in popup style
			var activeClass = (self.options.style == "popup") ? " ui-state-active" : "";

			// empty list so we can refresh the selectmenu via selectmenu()
			this.list.html("");

			// write li's
			if (selectOptionData.length) {
				for (var i = 0; i < selectOptionData.length; i++) {
					var thisLiAttr = { role : 'presentation' };
					if ( selectOptionData[ i ].disabled ) {
						thisLiAttr[ 'class' ] = this.namespace + '-state-disabled';
					}
					var thisAAttr = {
						html: selectOptionData[i].text,
						href : '#nogo',
						tabindex : -1,
						role : 'option',
						'aria-selected' : false
					};
					if ( selectOptionData[ i ].disabled ) {
						thisAAttr[ 'aria-disabled' ] = selectOptionData[ i ].disabled;
					}
					if ( selectOptionData[ i ].typeahead ) {
						thisAAttr[ 'typeahead' ] = selectOptionData[ i ].typeahead;
					}
					var thisA = $('<a/>', thisAAttr);
					var thisLi = $('<li/>', thisLiAttr)
						.append(thisA)
						.data('index', i)
						.addClass(selectOptionData[i].classes)
						.data('optionClasses', selectOptionData[i].classes || '')
						.bind("mouseup.selectmenu", function(event) {
							if (self._safemouseup && !self._disabled(event.currentTarget) && !self._disabled($( event.currentTarget ).parents( "ul>li." + self.widgetBaseClass + "-group " )) ) {
								var changed = $(this).data('index') != self._selectedIndex();
								self.index($(this).data('index'));
								self.select(event);
								if (changed) {
									self.change(event);
								}
								self.close(event, true);
							}
							return false;
						})
						.bind("click.selectmenu", function() {
							return false;
						})
						.bind('mouseover.selectmenu focus.selectmenu', function(e) {
							// no hover if diabled
							if (!$(e.currentTarget).hasClass(self.namespace + '-state-disabled') && !$(e.currentTarget).parent("ul").parent("li").hasClass(self.namespace + '-state-disabled')) {
								self._selectedOptionLi().addClass(activeClass);
								self._focusedOptionLi().removeClass(self.widgetBaseClass + '-item-focus ui-state-hover');
								$(this).removeClass('ui-state-active').addClass(self.widgetBaseClass + '-item-focus ui-state-hover');
							}
						})
						.bind('mouseout.selectmenu blur.selectmenu', function() {
							if ($(this).is(self._selectedOptionLi().selector)) {
								$(this).addClass(activeClass);
							}
							$(this).removeClass(self.widgetBaseClass + '-item-focus ui-state-hover');
						});

					// optgroup or not...
					if ( selectOptionData[i].parentOptGroup.length ) {
						var optGroupName = self.widgetBaseClass + '-group-' + this.element.find( 'optgroup' ).index( selectOptionData[i].parentOptGroup );
						if (this.list.find( 'li.' + optGroupName ).length ) {
							this.list.find( 'li.' + optGroupName + ':last ul' ).append( thisLi );
						} else {
							$(' <li role="presentation" class="' + self.widgetBaseClass + '-group ' + optGroupName + (selectOptionData[i].parentOptGroup.attr("disabled") ? ' ' + this.namespace + '-state-disabled" aria-disabled="true"' : '"' ) + '><span class="' + self.widgetBaseClass + '-group-label">' + selectOptionData[i].parentOptGroup.attr('label') + '</span><ul></ul></li> ')
								.appendTo( this.list )
								.find( 'ul' )
								.append( thisLi );
						}
					} else {
						thisLi.appendTo(this.list);
					}

					// append icon if option is specified
					if (o.icons) {
						for (var j in o.icons) {
							if (thisLi.is(o.icons[j].find)) {
								thisLi
									.data('optionClasses', selectOptionData[i].classes + ' ' + self.widgetBaseClass + '-hasIcon')
									.addClass(self.widgetBaseClass + '-hasIcon');
								var iconClass = o.icons[j].icon || "";
								thisLi
									.find('a:eq(0)')
									.prepend('<span class="' + self.widgetBaseClass + '-item-icon ui-icon ' + iconClass + '"></span>');
								if (selectOptionData[i].bgImage) {
									thisLi.find('span').css('background-image', selectOptionData[i].bgImage);
								}
							}
						}
					}
				}
			} else {
				$('<li role="presentation"><a href="#nogo" tabindex="-1" role="option"></a></li>').appendTo(this.list);
			}
			// we need to set and unset the CSS classes for dropdown and popup style
			var isDropDown = ( o.style == 'dropdown' );
			this.newelement
				.toggleClass( self.widgetBaseClass + '-dropdown', isDropDown )
				.toggleClass( self.widgetBaseClass + '-popup', !isDropDown );
			this.list
				.toggleClass( self.widgetBaseClass + '-menu-dropdown ui-corner-bottom', isDropDown )
				.toggleClass( self.widgetBaseClass + '-menu-popup ui-corner-all', !isDropDown )
				// add corners to top and bottom menu items
				.find( 'li:first' )
				.toggleClass( 'ui-corner-top', !isDropDown )
				.end().find( 'li:last' )
				.addClass( 'ui-corner-bottom' );
			this.selectmenuIcon
				.toggleClass( 'ui-icon-triangle-1-s', isDropDown )
				.toggleClass( 'ui-icon-triangle-2-n-s', !isDropDown );

			// transfer classes to selectmenu and list
			if ( o.transferClasses ) {
				var transferClasses = this.element.attr( 'class' ) || '';
				this.newelement.add( this.list ).addClass( transferClasses );
			}

			// set menu width to either menuWidth option value, width option value, or select width
			if ( o.style == 'dropdown' ) {
				this.list.width( o.menuWidth ? o.menuWidth : o.width );
			} else {
				this.list.width( o.menuWidth ? o.menuWidth : o.width - o.handleWidth );
			}

			// reset height to auto
			this.list.css( 'height', 'auto' );
			var listH = this.listWrap.height();
			// calculate default max height
			if ( o.maxHeight && o.maxHeight < listH ) {
				this.list.height( o.maxHeight );
			} else {
				var winH = $( window ).height() / 3;
				if ( winH < listH ) this.list.height( winH );
			}

			// save reference to actionable li's (not group label li's)
			this._optionLis = this.list.find( 'li:not(.' + self.widgetBaseClass + '-group)' );

			// transfer disabled state
			if ( this.element.attr( 'disabled' ) ) {
				this.disable();
			} else {
				this.enable();
			}

			// update value
			this.index( this._selectedIndex() );

			// needed when selectmenu is placed at the very bottom / top of the page
			window.setTimeout( function() {
				self._refreshPosition();
			}, 200 );
		},

		destroy: function() {
			this.element.removeData( this.widgetName )
				.removeClass( this.widgetBaseClass + '-disabled' + ' ' + this.namespace + '-state-disabled' )
				.removeAttr( 'aria-disabled' )
				.unbind( ".selectmenu" );

			$( window ).unbind( ".selectmenu-" + this.ids[0] );
			$( document ).unbind( ".selectmenu-" + this.ids[0] );

			this.newelementWrap.remove();
			this.listWrap.remove();

			// unbind click event and show original select
			this.element
				.unbind(".selectmenu")
				.show();

			// call widget destroy function
			$.Widget.prototype.destroy.apply(this, arguments);
		},

		_typeAhead: function( code, eventType ) {
			var self = this,
				c = String.fromCharCode(code).toLowerCase(),
				items = this.list.find( 'li a' ),
				matchee = null,
				nextIndex = null;

			// Clear any previous timer if present
			if ( self._typeAhead_timer ) {
				window.clearTimeout( self._typeAhead_timer );
				self._typeAhead_timer = undefined;
			}

			// Store the character typed
			self._typeAhead_chars = (self._typeAhead_chars === undefined ? "" : self._typeAhead_chars).concat(c);

			// Detect if we are in cyciling mode or direct selection mode
			if ( self._typeAhead_chars.length < 2 ||
				(self._typeAhead_chars.substr(-2, 1) === c && self._typeAhead_cycling) ) {
				self._typeAhead_cycling = true;

				// Match only the first character and loop
				matchee = c;
			}
			else {
				// We won't be cycling anymore until the timer expires
				self._typeAhead_cycling = false;

				// Match all the characters typed
				matchee = self._typeAhead_chars;
			}

			// We need to determine the currently active index, but it depends on
			// the used context: if it's in the element, we want the actual
			// selected index, if it's in the menu, just the focused one
			// I copied this code from _moveSelection() and _moveFocus()
			// respectively --thg2k
			var selectedIndex = (eventType !== 'focus' ?
				this._selectedOptionLi().data('index') :
				this._focusedOptionLi().data('index')) || 0;

			for (var i = 0; i < items.length; i++) {
				var thisText = items.eq(i).text().substr(0, matchee.length).toLowerCase();

				if ( thisText === matchee ) {

					if ( self._typeAhead_cycling ) {
						if ( nextIndex === null )
							nextIndex = i;

						if ( i > selectedIndex ) {
							nextIndex = i;
							break;
						}
					} else {
						nextIndex = i;
					}
				}
			}

			if ( nextIndex !== null ) {
				// Why using trigger() instead of a direct method to select the
				// index? Because we don't what is the exact action to do, it
				// depends if the user is typing on the element or on the popped
				// up menu
				items.eq(nextIndex).trigger( eventType );
			}

			self._typeAhead_timer = window.setTimeout(function() {
				self._typeAhead_timer = undefined;
				self._typeAhead_chars = undefined;
				self._typeAhead_cycling = undefined;
			}, self.options.typeAhead);
		},

		// returns some usefull information, called by callbacks only
		_uiHash: function() {
			var index = this.index();
			return {
				index: index,
				option: $("option", this.element).get(index),
				value: this.element[0].value
			};
		},

		open: function(event) {
			var self = this, o = this.options;
			if ( self.newelement.attr("aria-disabled") != 'true' ) {
				self._closeOthers(event);
				self.newelement.addClass('ui-state-active');

				self.listWrap.appendTo( o.appendTo );
				self.list.attr('aria-hidden', false);
				self.listWrap.addClass( self.widgetBaseClass + '-open' );

				var selected = this._selectedOptionLi();
				if ( o.style == "dropdown" ) {
					self.newelement.removeClass('ui-corner-all').addClass('ui-corner-top');
				} else {
					// center overflow and avoid flickering
					this.list
						.css("left", -5000)
						.scrollTop( this.list.scrollTop() + selected.position().top - this.list.outerHeight()/2 + selected.outerHeight()/2 )
						.css("left","auto");
				}

				self._refreshPosition();

				var link = selected.find("a");
				if (link.length) link[0].focus();

				self.isOpen = true;
				self._trigger("open", event, self._uiHash());
			}
		},

		close: function(event, retainFocus) {
			if ( this.newelement.is('.ui-state-active') ) {
				this.newelement
					.removeClass('ui-state-active');
				this.listWrap.removeClass(this.widgetBaseClass + '-open');
				this.list.attr('aria-hidden', true);
				if ( this.options.style == "dropdown" ) {
					this.newelement.removeClass('ui-corner-top').addClass('ui-corner-all');
				}
				if ( retainFocus ) {
					this.newelement.focus();
				}
				this.isOpen = false;
				this._trigger("close", event, this._uiHash());
			}
		},

		change: function(event) {
			this.element.trigger("change");
			this._trigger("change", event, this._uiHash());
		},

		select: function(event) {
			if (this._disabled(event.currentTarget)) { return false; }
			this._trigger("select", event, this._uiHash());
		},

		_closeOthers: function(event) {
			$('.' + this.widgetBaseClass + '.ui-state-active').not(this.newelement).each(function() {
				$(this).data('selectelement').selectmenu('close', event);
			});
			$('.' + this.widgetBaseClass + '.ui-state-hover').trigger('mouseout');
		},

		_toggle: function(event, retainFocus) {
			if ( this.isOpen ) {
				this.close(event, retainFocus);
			} else {
				this.open(event);
			}
		},

		_formatText: function(text) {
			return (this.options.format ? this.options.format(text) : text);
		},

		_selectedIndex: function() {
			return this.element[0].selectedIndex;
		},

		_selectedOptionLi: function() {
			return this._optionLis.eq(this._selectedIndex());
		},

		_focusedOptionLi: function() {
			return this.list.find('.' + this.widgetBaseClass + '-item-focus');
		},

		_moveSelection: function(amt, recIndex) {
			// do nothing if disabled
			if (!this.options.disabled) {
				var currIndex = parseInt(this._selectedOptionLi().data('index') || 0, 10);
				var newIndex = currIndex + amt;
				// do not loop when using up key

				if (newIndex < 0) {
					newIndex = 0;
				}
				if (newIndex > this._optionLis.size() - 1) {
					newIndex = this._optionLis.size() - 1;
				}
				// Occurs when a full loop has been made
				if (newIndex === recIndex) { return false; }

				if (this._optionLis.eq(newIndex).hasClass( this.namespace + '-state-disabled' )) {
					// if option at newIndex is disabled, call _moveFocus, incrementing amt by one
					(amt > 0) ? ++amt : --amt;
					this._moveSelection(amt, newIndex);
				} else {
					return this._optionLis.eq(newIndex).trigger('mouseup');
				}
			}
		},

		_moveFocus: function(amt, recIndex) {
			if (!isNaN(amt)) {
				var currIndex = parseInt(this._focusedOptionLi().data('index') || 0, 10);
				var newIndex = currIndex + amt;
			} else {
				var newIndex = parseInt(this._optionLis.filter(amt).data('index'), 10);
			}

			if (newIndex < 0) {
				newIndex = 0;
			}
			if (newIndex > this._optionLis.size() - 1) {
				newIndex = this._optionLis.size() - 1;
			}

			//Occurs when a full loop has been made
			if (newIndex === recIndex) { return false; }

			var activeID = this.widgetBaseClass + '-item-' + Math.round(Math.random() * 1000);

			this._focusedOptionLi().find('a:eq(0)').attr('id', '');

			if (this._optionLis.eq(newIndex).hasClass( this.namespace + '-state-disabled' )) {
				// if option at newIndex is disabled, call _moveFocus, incrementing amt by one
				(amt > 0) ? ++amt : --amt;
				this._moveFocus(amt, newIndex);
			} else {
				this._optionLis.eq(newIndex).find('a:eq(0)').attr('id',activeID).focus();
			}

			this.list.attr('aria-activedescendant', activeID);
		},

		_scrollPage: function(direction) {
			var numPerPage = Math.floor(this.list.outerHeight() / this.list.find('li:first').outerHeight());
			numPerPage = (direction == 'up' ? -numPerPage : numPerPage);
			this._moveFocus(numPerPage);
		},

		_setOption: function(key, value) {
			this.options[key] = value;
			// set
			if (key == 'disabled') {
				if (value) this.close();
				this.element
					.add(this.newelement)
					.add(this.list)[value ? 'addClass' : 'removeClass'](
					this.widgetBaseClass + '-disabled' + ' ' +
						this.namespace + '-state-disabled')
					.attr("aria-disabled", value);
			}
		},

		disable: function(index, type){
			// if options is not provided, call the parents disable function
			if ( typeof( index ) == 'undefined' ) {
				this._setOption( 'disabled', true );
			} else {
				if ( type == "optgroup" ) {
					this._disableOptgroup(index);
				} else {
					this._disableOption(index);
				}
			}
		},

		enable: function(index, type) {
			// if options is not provided, call the parents enable function
			if ( typeof( index ) == 'undefined' ) {
				this._setOption('disabled', false);
			} else {
				if ( type == "optgroup" ) {
					this._enableOptgroup(index);
				} else {
					this._enableOption(index);
				}
			}
		},

		_disabled: function(elem) {
			return $(elem).hasClass( this.namespace + '-state-disabled' );
		},


		_disableOption: function(index) {
			var optionElem = this._optionLis.eq(index);
			if (optionElem) {
				optionElem.addClass(this.namespace + '-state-disabled')
					.find("a").attr("aria-disabled", true);
				this.element.find("option").eq(index).attr("disabled", "disabled");
			}
		},

		_enableOption: function(index) {
			var optionElem = this._optionLis.eq(index);
			if (optionElem) {
				optionElem.removeClass( this.namespace + '-state-disabled' )
					.find("a").attr("aria-disabled", false);
				this.element.find("option").eq(index).removeAttr("disabled");
			}
		},

		_disableOptgroup: function(index) {
			var optGroupElem = this.list.find( 'li.' + this.widgetBaseClass + '-group-' + index );
			if (optGroupElem) {
				optGroupElem.addClass(this.namespace + '-state-disabled')
					.attr("aria-disabled", true);
				this.element.find("optgroup").eq(index).attr("disabled", "disabled");
			}
		},

		_enableOptgroup: function(index) {
			var optGroupElem = this.list.find( 'li.' + this.widgetBaseClass + '-group-' + index );
			if (optGroupElem) {
				optGroupElem.removeClass(this.namespace + '-state-disabled')
					.attr("aria-disabled", false);
				this.element.find("optgroup").eq(index).removeAttr("disabled");
			}
		},

		index: function(newValue) {
			if (arguments.length) {
				if (!this._disabled($(this._optionLis[newValue]))) {
					this.element[0].selectedIndex = newValue;
					this._refreshValue();
				} else {
					return false;
				}
			} else {
				return this._selectedIndex();
			}
		},

		value: function(newValue) {
			if (arguments.length) {
				this.element[0].value = newValue;
				this._refreshValue();
			} else {
				return this.element[0].value;
			}
		},

		_refreshValue: function() {
			var activeClass = (this.options.style == "popup") ? " ui-state-active" : "";
			var activeID = this.widgetBaseClass + '-item-' + Math.round(Math.random() * 1000);
			// deselect previous
			this.list
				.find('.' + this.widgetBaseClass + '-item-selected')
				.removeClass(this.widgetBaseClass + "-item-selected" + activeClass)
				.find('a')
				.attr('aria-selected', 'false')
				.attr('id', '');
			// select new
			this._selectedOptionLi()
				.addClass(this.widgetBaseClass + "-item-selected" + activeClass)
				.find('a')
				.attr('aria-selected', 'true')
				.attr('id', activeID);

			// toggle any class brought in from option
			var currentOptionClasses = (this.newelement.data('optionClasses') ? this.newelement.data('optionClasses') : "");
			var newOptionClasses = (this._selectedOptionLi().data('optionClasses') ? this._selectedOptionLi().data('optionClasses') : "");
			this.newelement
				.removeClass(currentOptionClasses)
				.data('optionClasses', newOptionClasses)
				.addClass( newOptionClasses )
				.find('.' + this.widgetBaseClass + '-status')
				.html(
				this._selectedOptionLi()
					.find('a:eq(0)')
					.html()
			);

			this.list.attr('aria-activedescendant', activeID);
		},

		_refreshPosition: function() {
			var o = this.options;

			// if its a pop-up we need to calculate the position of the selected li
			if ( o.style == "popup" && !o.positionOptions.offset ) {
				var selected = this._selectedOptionLi();
				var _offset = "0 " + ( this.list.offset().top  - selected.offset().top - ( this.newelement.outerHeight() + selected.outerHeight() ) / 2);
			}
			// update zIndex if jQuery UI is able to process
			this.listWrap
				.zIndex( this.element.zIndex() + 100 )
				.position({
					// set options for position plugin
					of: o.positionOptions.of || this.newelement,
					my: o.positionOptions.my,
					at: o.positionOptions.at,
					offset: o.positionOptions.offset || _offset,
					collision: o.positionOptions.collision || 'flip'
				});
		}
	});

})(jQuery);