/*!
 * jQuery UI AriaLightbox (31.01.11)
 * http://github.com/fnagel/jQuery-Accessible-RIA
 *
 * Copyright (c) 2009 Felix Nagel for Namics (Deustchland) GmbH
 * Copyright (c) 2010-2011 Felix Nagel
 * Licensed under the MIT license: http://www.opensource.org/licenses/mit-license.php
 *
 * Depends: jQuery UI
 * Optional: jQuery Address Plugin
 */
(function(a){a.widget("ui.ariaLightbox",{version:"1.8",options:{altText:function(){return a(this).find("img").attr("alt")},descText:function(){return a(this).next().next().text()},titleText:function(){return"Fullscreen"},prevText:"vorheriges Bild",nextText:"nächstes Bild",pictureText:"Bild",ofText:"von",closeText:"schließen",pos:"auto",autoHeight:50,offsetX:10,offsetY:10,disableWidth:550,disableHeight:550,useDimmer:true,animationSpeed:"slow",zIndex:1000,makeHover:true,em:0.0568182,activeImage:0,jqAddress:{enable:true,title:{enable:true,split:" | "}}},_create:function(){var c=this.options,b=this;if(c.imageArray){c.selector=c.imageArray;c.imageArray=b.element.find(c.imageArray);if(c.makeHover){c.imageArray.each(function(){b._makeHover(a(this))})}}else{if(c.makeHover){b._makeHover(b.element)}}if(a.address&&c.jqAddress.enable){a.address.externalChange(function(e){if(e.value==""&&c.wrapperElement){b.close()}else{if(c.imageArray){for(var d=0;d<c.imageArray.length;d++){if(a(c.imageArray[d]).attr("href")==e.value){c.activeImage=d;b._open(a(c.imageArray[d]));b._setButtonState();return}}}else{if(b.element.attr("href")==e.value){b._open(b.element)}}}})}b.element.click(function(d){if(!c.imageArray){return b._open(a(this),d)}else{target=a(d.target).closest(c.selector,b.element);if(target.length){c.activeImage=c.imageArray.index(target);return b._open(target,d)}}});if(c.useDimmer){a(window).resize(function(){if(!c.disabled){b._dimmerResize()}})}},startGallery:function(c,b){b=(b)?b:0;this.options.activeImage=b;return this._open(a(this.options.imageArray[b]),c)},_open:function(d,e){var c=this.options,b=this;if(!c.disabled&&a(window).width()-c.disableWidth>0&&a(window).height()-c.disableHeight>0){if(!c.imageArray&&e){c.clickedElement=e.currentTarget}else{c.clickedElement=d}c.wrapperElement=a("body>div#ui-lightbox-wrapper");if(!c.wrapperElement.length){b._show(d,e)}else{b._changePicture(d,e)}return false}return true},_show:function(f,b){var m=this.options,l=this;var j="\n";j+='<div id="ui-lightbox-wrapper" style="z-index:'+m.zIndex+1+';" class="ui-dialog ui-widget ui-widget-content" tabindex="-1" role="dialog" aria-labelledby="ui-dialog-title-dialog">\n';j+='	<div class="ui-dialog-titlebar ui-widget-header ui-corner-all ui-helper-clearfix">\n';j+='		<a href="#nogo" id="ui-lightbox-close" class="ui-dialog-titlebar-close ui-corner-all" title="'+m.closeText+'" role="button">\n';j+='			<span class="ui-icon ui-icon-closethick"></span>\n';j+="		</a>\n";j+="	</div>\n";j+='	<div id="ui-lightbox-content">\n';j+='		<div id="ui-lightbox-image"><img src="" aria-describedby="ui-lightbox-description" /></div>\n';j+='		<p id="ui-lightbox-description"></p>\n';if(m.imageArray){j+='		<div id="ui-dialog-buttonpane" class="ui-dialog-buttonpane ui-widget-content ui-helper-clearfix">\n';j+='			<div class="ui-dialog-buttonset">\n';j+='				<button id="ui-lightbox-prev" type="button" role="button" class="ui-button ui-widget ui-state-default ui-corner-all ui-button-text-only"><span class="ui-button-text">'+m.prevText+"</span></button>\n";j+='				<span id="ui-lightbox-pager"></span>\n';j+='				<button id="ui-lightbox-next" type="button" role="button" class="ui-button ui-widget ui-state-default ui-corner-all ui-button-text-only"><span class="ui-button-text">'+m.nextText+"</span></button>\n";j+="			</div>\n";j+="		</div>\n"}j+="	</div>	\n";j+="</div>\n";if(m.useDimmer){l._createDimmer()}a("body").append(j);l._trigger("onShow",0);m.wrapperElement=a("body>div#ui-lightbox-wrapper");if(m.imageArray){m.wrapperElement.keydown(function(n){if(n.keyCode==a.ui.keyCode.RIGHT){l.next()}if(n.keyCode==a.ui.keyCode.DOWN){l.next()}if(n.keyCode==a.ui.keyCode.UP){l.prev()}if(n.keyCode==a.ui.keyCode.LEFT){l.prev()}if(n.keyCode==a.ui.keyCode.SPACE){l.next()}if(n.keyCode==a.ui.keyCode.END){m.activeImage=m.imageArray.length-2;n.preventDefault();l.next()}if(n.keyCode==a.ui.keyCode.HOME){m.activeImage=1;n.preventDefault();l.prev()}});m.buttonpane=m.wrapperElement.find("#ui-dialog-buttonpane");l._setButtonState();var d=m.buttonpane.find("#ui-lightbox-prev");d.click(function(){l.prev()});l._makeHover(d);var i=m.buttonpane.find("#ui-lightbox-next");i.click(function(){l.next()});l._makeHover(i)}m.wrapperElement.keydown(function(n){if(n.keyCode==a.ui.keyCode.ESCAPE){l.close()}});var k=m.wrapperElement.find("#ui-lightbox-close");k.click(function(){l.close();return false});l._makeHover(k);if((!b||!b.pageX||!b.pageY)&&m.pos=="offset"){m.pos="auto"}switch(m.pos){case"auto":var c=l._pageScroll();var e=((a(document).width()-m.wrapperElement.width())/2);var h=c[1]+m.autoHeight;break;case"offset":var e=b.pageX+m.offsetX;var h=b.pageY-m.offsetY;break;default:var g=m.pos.split(",");var e=g[0];var h=g[1];break}m.wrapperElement.css({left:e+"px",top:h+"px"}).fadeIn(m.animationSpeed).focus();l._changePicture(f,b)},_changePicture:function(e,g){var d=this.options,b=this;var c=d.wrapperElement.find("#ui-lightbox-content");var f=c.find("#ui-lightbox-image");var h=f.find("img");h.fadeOut(d.animationSpeed,function(){c.attr("aria-live","assertive").attr("aria-relevant","additions removals text").attr("aria-busy",true);var i=new Image();i.onload=function(){h.attr("src",e.attr("href")).attr("alt",d.altText.call(e));var k=(d.em)?i.width*d.em+"em":i.width;var j=(d.em)?i.height*d.em+"em":i.height;h.css({width:k,height:j});if(!g&&d.pos=="offset"){d.pos="auto"}switch(d.pos){case"offset":d.wrapperElement.animate({left:g.pageX+d.offsetX+"px",top:g.pageY+d.offsetY+"px",width:k},d.animationSpeed);break;case"auto":default:d.wrapperElement.animate({left:((a(document).width()-i.width)/2)+"px",width:k},d.animationSpeed);break}f.animate({height:j},d.animationSpeed,function(){h.fadeIn(d.animationSpeed);d.wrapperElement.find("#ui-lightbox-description").text(d.descText.call(e));if(d.imageArray){d.wrapperElement.find("#ui-lightbox-pager").text(d.pictureText+" "+(d.activeImage+1)+" "+d.ofText+" "+d.imageArray.length)}if(d.useDimmer){b._dimmerResize()}b._updateVirtualBuffer();c.attr("aria-busy",false);if(a.address&&d.jqAddress.enable){if(d.jqAddress.title.enable){a.address.title(a.address.title().split(d.jqAddress.title.split)[0]+d.jqAddress.title.split+d.altText.call(e))}a.address.value(e.attr("href"))}b._trigger("onChangePicture",0)});i.onload=function(){}};i.src=e.attr("href")})},_setButtonState:function(){var b=this.options;b.buttonpane.find("#ui-lightbox-next, #ui-lightbox-prev").removeAttr("disabled").removeClass("ui-state-disabled").removeClass("ui-state-focus");switch(b.activeImage){case 0:b.buttonpane.find("#ui-lightbox-prev").attr("disabled","disabled").removeClass("ui-state-hover").addClass("ui-state-disabled");b.buttonpane.find("#ui-lightbox-next").focus();if(b.imageArray.length=="1"){b.buttonpane.find("#ui-lightbox-next").attr("disabled","disabled").removeClass("ui-state-hover").addClass("ui-state-disabled")}break;case b.imageArray.length-1:b.buttonpane.find("#ui-lightbox-next").attr("disabled","disabled").removeClass("ui-state-hover").addClass("ui-state-disabled");b.buttonpane.find("#ui-lightbox-prev").focus();break}},close:function(){var c=this.options,b=this;c.wrapperElement.fadeOut(c.animationSpeed,function(){a(this).remove()});if(c.useDimmer){a("#ui-lightbox-screendimmer").fadeOut(c.animationSpeed,function(){a(this).remove()})}a(c.clickedElement).focus();if(a.address&&c.jqAddress.enable){if(c.jqAddress.title.enable){a.address.title(a.address.title().split(c.jqAddress.title.split)[0])}a.address.value("")}b._trigger("onClose",0,c.activeImage)},prev:function(){var c=this.options,b=this;if(c.imageArray&&c.activeImage>0){c.activeImage=c.activeImage-1;b._changePicture(a(c.imageArray[c.activeImage]));b._setButtonState();b._trigger("onPrev",0,c.activeImage)}},next:function(){var c=this.options,b=this;if(c.imageArray&&c.activeImage<(c.imageArray.length-1)){c.activeImage=c.activeImage+1;b._changePicture(a(c.imageArray[c.activeImage]));b._setButtonState();b._trigger("onNext",0,c.activeImage)}},_createDimmer:function(){var c=this.options,b=this;var d='<div id="ui-lightbox-screendimmer" class="ui-widget-overlay" style="display: none;"></div>';a("body").append(d);a("#ui-lightbox-screendimmer").css({width:b._dimmerWidth()+"px",height:b._dimmerHeight()+"px",zIndex:c.zIndex}).fadeIn(c.animationSpeed).click(function(){b.close()})},_dimmerResize:function(){var c=this;var e=a("#ui-lightbox-screendimmer");if(e.length){e.css({width:0,height:0});var d=c._pageScroll();var b=(d[0]==0)?c._dimmerWidth():d[0];e.css({width:b+"px",height:c._dimmerHeight()+"px"})}},_dimmerHeight:function(){if(a.browser.msie&&a.browser.version<7){var c=Math.max(document.documentElement.scrollHeight,document.body.scrollHeight);var b=Math.max(document.documentElement.offsetHeight,document.body.offsetHeight);if(c<b){return a(window).height()}else{return c}}else{return a(document).height()}},_dimmerWidth:function(){if(a.browser.msie&&a.browser.version<7){var b=Math.max(document.documentElement.scrollWidth,document.body.scrollWidth);var c=Math.max(document.documentElement.offsetWidth,document.body.offsetWidth);if(b<c){return a(window).width()}else{return b}}else{return a(document).width()}},_pageScroll:function(){var c,b;if(self.pageYOffset){b=self.pageYOffset;c=self.pageXOffset}else{if(document.documentElement&&document.documentElement.scrollTop){b=document.documentElement.scrollTop;c=document.documentElement.scrollLeft}else{if(document.body){b=document.body.scrollTop;c=document.body.scrollLeft}}}arrayPageScroll=new Array(c,b);return arrayPageScroll},_makeHover:function(b){b.bind("mouseenter",function(){a(this).addClass("ui-state-hover")}).bind("mouseleave",function(){a(this).removeClass("ui-state-hover")}).bind("focus",function(){a(this).addClass("ui-state-focus")}).bind("blur",function(){a(this).removeClass("ui-state-focus")})},_updateVirtualBuffer:function(){var c=a("body>form #virtualBufferForm");if(c.length){(c.val()=="1")?c.val("0"):c.val("1")}else{var b='<form><input id="virtualBufferForm" type="hidden" value="1" /></form>';a("body").append(b)}},destroy:function(){var b=this.options;if(b.makeHover){if(b.imageArray){b.imageArray.each(function(){a(this).unbind("mouseleave mouseenter focus blur")})}else{this.element.unbind("mouseleave mouseenter focus blur")}}this.element.unbind(".ariaLightbox").unbind("click").removeData("ariaLightbox");a("body>form #virtualBufferForm").parent().remove();a("body>div#ui-lightbox-screendimmer").remove();a("body>div#ui-lightbox-wrapper").unbind("keydown").remove();a.Widget.prototype.destroy.apply(this,arguments)}})})(jQuery);