/*
* jQuery UI selectmenu dev version
*
* 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: "1.8",
        eventPrefix: "selectmenu",
        options: {
            transferClasses: true,
            typeAhead: "sequential",
            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);

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

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

            // create menu button wrapper
            this.newelement = $('<a />', {
                'class': this.widgetBaseClass + ' ui-widget ui-state-default ui-corner-all',
                'id': this.ids[0],
                'role': 'button',
                'href': '#',
                'tabindex': this.element.attr('disabled') ? 1 : 0,
                'aria-haspopup': true,
                'aria-owns': this.ids[1]
            });
            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
            $('label[for="' + selectmenuId + '"]')
			.attr('for', this.ids[0])
			.bind('click.selectmenu', function () {
			    self.newelement[0].focus();
			    return false;
			});

            // 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;
			        default:
			            ret = true;
			    }
			    return ret;
			})
			.bind('keypress.selectmenu', function (event) {
			    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", function (event) {
                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[0],
                'id': this.ids[1]
            });
            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) {
			    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
            // TODO seems to be useless, but causes errors (fnagel 01.08.11)
            // see: https://github.com/fnagel/jquery-ui/issues/147
            // $(window).bind( "resize.selectmenu", $.proxy( self._refreshPosition, 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: '#',
                        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="#" 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");

            // TODO unneded as event binding has been disabled
            // $( window ).unbind( ".selectmenu" );
            $(document).unbind(".selectmenu");

            // unbind click on label, reset its for attr
            $('label[for=' + this.newelement.attr('id') + ']')
			.attr('for', this.element.attr('id'))
			.unbind('.selectmenu');

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

            this.element.show();

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

        _typeAhead: function (code, eventType) {
            var self = this, focusFound = false, C = String.fromCharCode(code).toUpperCase();
            c = C.toLowerCase();

            if (self.options.typeAhead == 'sequential') {
                // clear the timeout so we can use _prevChar
                window.clearTimeout('ui.selectmenu-' + self.selectmenuId);

                // define our find var
                var find = typeof (self._prevChar) == 'undefined' ? '' : self._prevChar.join('');

                function focusOptSeq(elem, ind, c) {
                    focusFound = true;
                    $(elem).trigger(eventType);
                    typeof (self._prevChar) == 'undefined' ? self._prevChar = [c] : self._prevChar[self._prevChar.length] = c;
                }
                this.list.find('li a').each(function (i) {
                    if (!focusFound) {
                        // allow the typeahead attribute on the option tag for a more specific lookup
                        var thisText = $(this).attr('typeahead') || $(this).text();
                        if (thisText.indexOf(find + C) === 0) {
                            focusOptSeq(this, i, C);
                        } else if (thisText.indexOf(find + c) === 0) {
                            focusOptSeq(this, i, c);
                        }
                    }
                });
                // set a 1 second timeout for sequenctial typeahead
                // keep this set even if we have no matches so it doesnt typeahead somewhere else
                window.setTimeout(function (el) {
                    self._prevChar = undefined;
                }, 1000, self);

            } else {
                // define self._prevChar if needed
                if (!self._prevChar) { self._prevChar = ['', 0]; }

                focusFound = false;
                function focusOpt(elem, ind) {
                    focusFound = true;
                    $(elem).trigger(eventType);
                    self._prevChar[1] = ind;
                }
                this.list.find('li a').each(function (i) {
                    if (!focusFound) {
                        var thisText = $(this).text();
                        if (thisText.indexOf(C) === 0 || thisText.indexOf(c) === 0) {
                            if (self._prevChar[0] == C) {
                                if (self._prevChar[1] < i) { focusOpt(this, i); }
                            } else {
                                focusOpt(this, i);
                            }
                        }
                    }
                });
                this._prevChar[0] = C;
            }
        },

        // 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);

                if (o.style == "dropdown") {
                    self.newelement.removeClass('ui-corner-all').addClass('ui-corner-top');
                }

                self.listWrap.addClass(self.widgetBaseClass + '-open');
                // positioning needed for IE7 (tested 01.08.11 on MS VPC Image)
                // see https://github.com/fnagel/jquery-ui/issues/147
                if ($.browser.msie && $.browser.version.substr(0, 1) == 7) {
                    self._refreshPosition();
                }
                var selected = self.list.attr('aria-hidden', false).find('li:not(.' + self.widgetBaseClass + '-group):eq(' + self._selectedIndex() + '):visible a');
                if (selected.length) selected[0].focus();
                // positioning needed for FF, Chrome, IE8, IE7, IE6 (tested 01.08.11 on MS VPC Image)
                self._refreshPosition();

                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._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.list.is('.' + this.widgetBaseClass + '-open')) {
                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') {
                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 native 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 -" + (selected.outerHeight() + selected.offset().top - this.list.offset().top);
            }
            // update zIndex if jQuery UI is able to process
            var zIndexElement = this.element.zIndex();
            if (zIndexElement) {
                this.listWrap.css('zIndex', zIndexElement);
            }
            this.listWrap.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);