var capLang=new Array('Image','of');
var overOpacity=0.8;
var Lightbox={
init: function(options){
this.options=$extend({
resizeDuration: 400,
resizeTransition: Fx.Transitions.sineInOut,
//-smk
initialWidth: 250,
initialHeight: 250,
animateCaption: true,
showCounter: true
}, options ||{});
this.anchors=[];
$each(document.links, function(el){
if (el.rel && el.rel.test(/^lightbox/i)){
el.onclick=this.click.pass(el, this);
this.anchors.push(el);
}}, this);
this.eventKeyDown=this.keyboardListener.bindAsEventListener(this);
this.eventPosition=this.position.bind(this);
this.overlay=new Element('div',{'id':'lbOverlay'}).injectInside(document.body);
this.center=new Element('div',{'id':'lbCenter', 'styles':{'width': this.options.initialWidth, 'height': this.options.initialHeight, 'marginLeft': -(this.options.initialWidth/2), 'display':'none'}}).injectInside(document.body);
this.image=new Element('div',{'id':'lbImage'}).injectInside(this.center);
this.imageBG=new Element('div',{'id':'lbImageBG'}).injectInside(this.center);
new Element('a',{id:'lbUpperCloseLink', href:'#'}).injectInside(this.image).onclick=this.close.bind(this);
this.prevLink=new Element('a',{'id':'lbPrevLink', 'href':'#', 'styles':{'display':'none'}}).injectInside(this.image);
this.nextLink=this.prevLink.clone().setProperty('id', 'lbNextLink').injectInside(this.image);
this.prevLink.onclick=this.previous.bind(this);
this.nextLink.onclick=this.next.bind(this);
this.bottomContainer=new Element('div',{'id':'lbBottomContainer', 'styles':{'display':'none'}}).injectInside(document.body);
this.bottom=new Element('div',{'id':'lbBottom'}).injectInside(this.bottomContainer);
new Element('a',{'id':'lbCloseLink', 'href':'#'}).injectInside(this.bottom).onclick=this.overlay.onclick=this.close.bind(this);
this.caption=new Element('div',{'id':'lbCaption'}).injectInside(this.bottom);
this.number=new Element('div',{'id':'lbNumber'}).injectInside(this.bottom);
new Element('div',{'styles':{'clear':'both'}}).injectInside(this.bottom);
var nextEffect=this.nextEffect.bind(this);
this.fx={
overlay: this.overlay.effect('opacity',{duration: 500}).hide(),
resize: this.center.effects($extend({duration: this.options.resizeDuration, onComplete: nextEffect}, this.options.resizeTransition ?{transition: this.options.resizeTransition}:{})),
image: this.image.effect('opacity',{duration: 500, onComplete: nextEffect}),
imageBG: this.imageBG.effect('opacity',{duration: 500, onComplete: nextEffect}),
bottom: this.bottom.effect('margin-top',{duration: 400, onComplete: nextEffect})
};
this.preloadPrev=new Image();
this.preloadNext=new Image();
},
click: function(link){
if (link.rel.length==8)return this.show(link.href, link.title);
var j, imageNum, images=[];
this.anchors.each(function(el){
if (el.rel==link.rel){
for (j=0;j < images.length;j++)if(images[j][0]==el.href)break;
if (j==images.length){
images.push([el.href, el.title]);
if (el.href==link.href)imageNum=j;
}}}, this);
return this.open(images, imageNum);
},
show: function(url, title){
return this.open([[url, title]], 0);
},
open: function(images, imageNum){
this.images=images;
this.position();
this.setup(true);
this.top=window.getScrollTop()+(window.getHeight()/ 15);
this.center.setStyles({top: this.top, display:''});
//-smk
this.fx.overlay.start(overOpacity);
return this.changeImage(imageNum);
},
position: function(){
this.overlay.setStyles({'top': window.getScrollTop(), 'height': window.getHeight()});
},
setup: function(open){
var elements=$A(document.getElementsByTagName('object'));
elements.extend(document.getElementsByTagName(window.ie ? 'select' :'embed'));
elements.each(function(el){
if (open)el.lbBackupStyle=el.style.visibility;
el.style.visibility=open ? 'hidden' : el.lbBackupStyle;
});
var fn=open ? 'addEvent' :'removeEvent';
window[fn]('scroll', this.eventPosition)[fn]('resize', this.eventPosition);
document[fn]('keydown', this.eventKeyDown);
this.step=0;
},
keyboardListener: function(event){
switch (event.keyCode){
case 27: case 88: case 67: this.close();break;
case 37: case 80: this.previous();break;
case 39: case 78: this.next();
}},
previous: function(){
return this.changeImage(this.activeImage-1);
},
next: function(){
return this.changeImage(this.activeImage+1);
},
changeImage: function(imageNum){
if (this.step||(imageNum < 0)|| (imageNum >=this.images.length))return false;
this.step=1;
this.activeImage=imageNum;
this.bottomContainer.style.display=this.prevLink.style.display=this.nextLink.style.display='none';
this.fx.image.hide();
this.fx.imageBG.hide();
this.center.className='lbLoading';
this.preload=new Image();
this.preload.onload=this.nextEffect.bind(this);
this.preload.src=this.images[imageNum][0];
return false;
},
nextEffect: function(){
switch (this.step++){
case 1:
this.center.className='';
this.image.style.background='transparent url('+this.images[this.activeImage][0]+')no-repeat scroll 0% 0%';
//-smk
this.image.style.width=this.bottom.style.width=this.preload.width+'px';
this.image.style.height=this.prevLink.style.height=this.nextLink.style.height=this.preload.height+'px';
this.imageBG.style.width=this.preload.width+'px';
this.imageBG.style.height=this.preload.height+'px';
this.caption.setHTML(this.images[this.activeImage][1]||'');
this.number.setHTML((this.images.length==1)? '' : capLang[0]+' '+(this.activeImage+1)+' '+capLang[1]+' '+this.images.length);
//-smk
if (this.activeImage)this.preloadPrev.src=this.images[this.activeImage-1][0];
if (this.activeImage !=(this.images.length - 1))this.preloadNext.src=this.images[this.activeImage+1][0];
if (this.center.clientHeight !=this.image.offsetHeight){
this.fx.resize.start({height: this.image.offsetHeight});
break;
}
this.step++;
case 2:
if (this.center.clientWidth !=this.image.offsetWidth){
this.fx.resize.start({width: this.image.offsetWidth, marginLeft: -this.image.offsetWidth/2});
break;
}
this.step++;
case 3:
this.bottomContainer.setStyles({top: this.top+this.center.clientHeight, height: 0, marginLeft: this.center.style.marginLeft, display:''});
this.fx.image.start(1);
this.imageBG.setStyle('opacity',1);
break;
case 4:
if (this.options.animateCaption){
this.fx.bottom.set(-this.bottom.offsetHeight);
this.bottomContainer.style.height='';
this.fx.bottom.start(0);
break;
}
this.bottomContainer.style.height='';
case 5:
if (this.activeImage)this.prevLink.style.display='';
if (this.activeImage !=(this.images.length - 1))this.nextLink.style.display='';
this.step=0;
}},
close: function(){
if (this.step < 0)return;
this.step=-1;
if (this.preload){
this.preload.onload=Class.empty;
this.preload=null;
}
for (var f in this.fx)this.fx[f].stop();
this.center.style.display=this.bottomContainer.style.display='none';
this.fx.overlay.chain(this.setup.pass(false, this)).start(0);
return false;
}};
window.addEvent('domready', Lightbox.init.bind(Lightbox));