(function($){with(pagedGallery=function(settings,container,fixItemsPlaceholderSize){this.container=container;this.jsonBackend=settings.jsonBackend;this.itemsOnPage=settings.itemsOnPage;this.itemRenderer=settings.itemRenderer;this.pagingRenderer=settings.pagingRenderer;this.ajaxRenderer=settings.ajaxRenderer;this.customRenderer=settings.customRenderer;this.emptyRenderer=settings.emptyRenderer;this.pagesCache={};if(settings.data)this.data=settings.data;this.init(fixItemsPlaceholderSize)}){prototype.container;
prototype.itemsCount=null;prototype.pagesCache={};prototype.pages=0;prototype.page=0;prototype.jsonBackend;prototype.itemsOnPage;prototype.itemRenderer;prototype.pagingRenderer;prototype.ajaxRenderer;prototype.customRenderer;prototype.emptyRenderer;prototype.data={};prototype.init=function(fixItemsPlaceholderSize){this.changePage(1,function(){if(fixItemsPlaceholderSize)this.fixItemsPlaceholderSize();this.renderPaging()})};prototype.fixItemsPlaceholderSize=function(){var placeholder=$(this.container).find(".itemsPlaceholder");
var height=placeholder.height();placeholder.css("height",height+"px")};prototype.loadPage=function(page,callback){var t=this;var params=this.data;params["itemsOnPage"]=this.itemsOnPage;params["page"]=page;$.getJSON(this.jsonBackend,params,function(data){if(data==null)t.emptyRenderer();t.pagesCache[page]=data["items"];t.itemsCount=data["total"];t.pages=Math.ceil(t.itemsCount/t.itemsOnPage);callback.call(t)})};prototype.renderPage=function(page,callback){if(this.pagesCache[page]){var placeholder=$(this.container).find(".itemsPlaceholder");
placeholder.empty();var items=this.pagesCache[page];for(i in items){var itemData=items[i];var item=this.itemRenderer(itemData);placeholder.append(item)}if(callback)callback.call(this)}};prototype.renderPaging=function(){var t=this;var handler=function(page){t.changePage(page)};this.pagingRenderer(this.pages,handler)};prototype.renderAjaxDecor=function(){var placeholder=$(this.container).find(".itemsPlaceholder").empty();var ajaxPlaceholder=$("<div></div>").css("position","relative").css("width","100%").css("height",
"100%").appendTo(placeholder);var pic=this.ajaxRenderer.call(this).css("position","absolute").appendTo(ajaxPlaceholder);var top=ajaxPlaceholder.height()/2-pic.height()/2;var left=ajaxPlaceholder.width()/2-pic.width()/2;pic.css("top",top).css("left",left)};prototype.changePage=function(page,callback){if(page!=this.page)if(!this.pagesCache[page]){this.renderAjaxDecor();this.loadPage(page,function(){this.changePage(page,callback)})}else{this.page=page;this.renderPage(page,callback);this.customRenderer.call(this)}}}$.fn.pagedGallery=
function(settings,fixItemsPlaceholderSize){if(typeof fixItemsPlaceholderSize=="undefined")fixItemsPlaceholderSize=true;new pagedGallery(settings,$(this),fixItemsPlaceholderSize)}})(jQuery);