253 lines
5.4 KiB
JavaScript
253 lines
5.4 KiB
JavaScript
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(function(SKY,$){
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var defOptions = {
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type: null,
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nullable: true,
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lookup: function(pattern,response){}
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};
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class SkySelect {
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constructor(element,options){
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this.options = Object.assign({},defOptions);
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Object.assign(this.options, options);
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var self = this;
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element = $(element);
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element.data("skySelect", this);
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this.element = element;
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this.wrap = $("<div></div>");
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this.element.appendTo(this.wrap);
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this.popup = $("<div></div>")
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.addClass("skyselect-popup")
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.appendTo(this.wrap);
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this.element
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.on("keydown", function(ev){ self.onKeyDown(ev); } )
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.on("focusin", function(ev){ self.onFocusIn(ev); } )
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.on("focusout", function(ev){ self.onFocusOut(ev); } )
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.on("dblclick", function(ev){
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self.open();
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self.update();
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} );
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this.wrap.addClass("skyselect-wrapper");
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this.type = SKY.type(this.options.type);
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this.selectedItem = null;
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this.activeItem = null;
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this.timer = null;
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}
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html(){ return this.wrap; }
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value(item){
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if (arguments.length)
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{
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this.select(item);
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return this;
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}
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return this.selectedItem;
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}
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open(){ this.popup.slideDown(); this.isOpen = true; return this; }
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close(){
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if (this.isOpen)
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{
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clearInterval(this.timer);
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this.popup.hide();
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this.isOpen = false;
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this.activeItem = null;
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}
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return this;
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}
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restoreSelection(){
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if (this.options.nullable && (this.element.val()==""))
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{
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this.selectedItem = null;
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} else {
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this.element.val(
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this.selectedItem ? this.options.render(this.selectedItem) : ""
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);
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}
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}
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markCurrentSelected(){
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var self = this;
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var currentSelectedIdentity = self.options.identity(self.selectedItem);
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this.popup.children(".skyselect-item").each(function(){
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var li = $(this);
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var item = li.data("skyselectItem");
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if (self.options.identity(item) == currentSelectedIdentity)
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li.addClass("selected");
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else
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li.removeClass("selected");
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});
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}
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markActive(item){
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var self = this;
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var currentActiveIdentity = self.type.identity(item);
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self.activeItem = item;
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this.popup.children(".skyselect-item").each(function(){
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var li = $(this);
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var item = li.data("skyselectItem");
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if (self.type.identity(item) == currentActiveIdentity)
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li.addClass("active");
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else
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li.removeClass("active");
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});
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}
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select(item){
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this.close();
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this.selectedItem = item;
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this.element.val(this.type.render(item));
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this.markCurrentSelected();
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}
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update(){
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var self = this;
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self.options.lookup(
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self.element.val(),
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function(items){
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self.items(items);
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}
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);
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}
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items(items){
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var self = this;
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this.popup.empty();
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$.each( items, function(){
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var item = this;
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var identity = self.type.identity(item);
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var li = $("<div></div>")
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.addClass("skyselect-item")
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.append(self.type.render(this))
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.appendTo(self.popup)
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.data("skyselectItem", item)
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.on("click", function(ev){
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self.select( item );
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} )
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.on("mouseover", function(ev){
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self.markActive(item);
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});
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if (self.currentActiveIdentity == identity)
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li.addClass("active");
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})
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this.markCurrentSelected();
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}
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valid(){
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return true;
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}
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onKeyDown(ev){
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var self = this;
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switch (ev.which)
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{
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case 13: // RETURN
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if (this.isOpen){
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}
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break;
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case 27: // ESC
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this.close();
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break;
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case 38: // UP
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if (this.isOpen){
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var currentActiveLi = $(".skyselect-item.active", this.popup);
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if (currentActiveLi.length){
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var prevLi = currentActiveLi.prev(".skyselect-item");
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if (prevLi.length)
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{
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this.markActive(prevLi.data("skyselectItem"));
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}
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} else {
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var firstLi = $(this.popup.children(".skyselect-item").get(0));
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if (firstLi.length)
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this.markActive(firstLi.data("skyselectItem"));
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}
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}
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break;
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case 40: // DOWN
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if (this.isOpen){
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var currentActiveLi = $(".skyselect-item.active", this.popup);
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if (currentActiveLi.length){
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var nextLi = currentActiveLi.next(".skyselect-item");
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if (nextLi.length)
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{
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this.markActive(nextLi.data("skyselectItem"));
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}
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} else {
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var firstLi = $(this.popup.children(".skyselect-item").get(0));
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if (firstLi.length){
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this.markActive(firstLi.data("skyselectItem"));
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}
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}
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} else {
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this.open();
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}
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break;
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default:
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console.log("ev.which=" + ev.which);
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if ((ev.which >= 32))
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{
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clearInterval(this.timer);
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this.timer = setInterval( function(){
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self.update();
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}, 250);
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this.open();
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}
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break;
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}
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}
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onFocusIn(ev){
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this.element.select();
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}
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onFocusOut(ev){
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var self = this;
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setTimeout( function(){ self.close(); }, 100 );
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this.restoreSelection();
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}
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}
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$.fn.skySelect = function(options){
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/* $.each( this, function(index,item){
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var skySelect = $(item).data("skySelect");
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if (!skySelect)
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skySelect = new SkySelect(item,options);
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});
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var me = $(this.get(0));
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if (me.hasClass("skyselect-wrapper"))
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return me;
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return me.parents(".skyselect-wrapper").data("skySelect");
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*/
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var me = $(this.get(0));
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var skySelect = me.data("skySelect");
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if (skySelect && options){
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throw "skySelect() must not be called with options when already initiaized";
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}
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if (!skySelect)
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skySelect = new SkySelect(me,options);
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return skySelect;
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}
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}( SKY, jQuery ));
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