/*MooTools, My Object Oriented Javascript Tools. Copyright (c) 2006-2007 Valerio Proietti, <http://mad4milk.net>, MIT Style License.||Clientcide Copyright (c) 2006-2008, http://www.clientcide.com/wiki/cnet-libraries#license*/

var Waiter=new Class({Implements:[Options,Events,Chain,Class.Occlude],options:{baseHref:'http://www.cnet.com/html/rb/assets/global/waiter/',containerProps:{styles:{position:'absolute','text-align':'center'},'class':'waiterContainer'},containerPosition:{},msg:false,msgProps:{styles:{'text-align':'center',fontWeight:'bold'},'class':'waiterMsg'},img:{src:'waiter.gif',styles:{width:24,height:24},'class':'waiterImg'},layer:{styles:{width:0,height:0,position:'absolute',zIndex:10000,display:'none',opacity:0.9,background:'#fff'},'class':'waitingDiv'},useIframeShim:true,fxOptions:{},injectWhere:null},property:'Waiter',initialize:function(target,options){this.element=document.id(target)||document.id(document.body);if(this.occlude())return this.occluded;this.setOptions(options);this.build();this.place(target)},build:function(){this.waiterContainer=new Element('div',this.options.containerProps);if(this.options.msg){this.msgContainer=new Element('div',this.options.msgProps);this.waiterContainer.adopt(this.msgContainer);if(!document.id(this.options.msg))this.msg=new Element('p').appendText(this.options.msg);else this.msg=document.id(this.options.msg);this.msgContainer.adopt(this.msg)}if(this.options.img)this.waiterImg=document.id(this.options.img.id)||new Element('img',$merge(this.options.img,{src:this.options.baseHref+this.options.img.src})).inject(this.waiterContainer);this.waiterOverlay=document.id(this.options.layer.id)||new Element('div').adopt(this.waiterContainer);this.waiterOverlay.set(this.options.layer);try{if(this.options.useIframeShim)this.shim=new IframeShim(this.waiterOverlay,this.options.iframeShimOptions)}catch(e){dbug.log("Waiter attempting to use IframeShim but failed; did you include IframeShim? Error: ",e);this.options.useIframeShim=false}this.waiterFx=this.waiterFx||new Fx.Elements($$(this.waiterContainer,this.waiterOverlay),this.options.fxOptions)},place:function(target,where){var where=where||this.options.injectWhere||target==document.body?'inside':'after';this.waiterOverlay.inject(target,where)},toggle:function(element,show){element=document.id(element)||document.id(this.active)||document.id(this.element);this.place(element);if(!document.id(element))return this;if(this.active&&element!=this.active)return this.stop(this.start.bind(this,element));if((!this.active||show)&&show!==false)this.start(element);else if(this.active&&!show)this.stop();return this},reset:function(){this.waiterFx.cancel().set({0:{opacity:[0]},1:{opacity:[0]}})},start:function(element){this.reset();element=document.id(element)||document.id(this.element);this.place(element);var start=function(){var dim=element.getComputedSize();this.active=element;this.waiterOverlay.setStyles({width:this.options.layer.width||dim.totalWidth,height:this.options.layer.height||dim.totalHeight,display:'block'}).position({relativeTo:element,position:'upperLeft'});this.waiterContainer.position($merge({relativeTo:this.waiterOverlay},this.options.containerPosition));if(this.options.useIframeShim)this.shim.show();this.waiterFx.start({0:{opacity:[1]},1:{opacity:[this.options.layer.styles.opacity]}}).chain(function(){if(this.active==element)this.fireEvent('onShow',element);this.callChain()}.bind(this))}.bind(this);if(this.active&&this.active!=element)this.stop(start);else start();return this},stop:function(callback){if(!this.active){if($type(callback)=="function")callback.attempt();return this}this.waiterFx.cancel();this.waiterFx.clearChain();this.waiterFx.start({0:{opacity:[0]},1:{opacity:[0]}}).chain(function(){this.active=null;this.waiterOverlay.hide();if(this.options.useIframeShim)this.shim.hide();this.fireEvent('onHide',this.active);this.callChain();this.clearChain();if($type(callback)=="function")callback.attempt()}.bind(this));return this}});if(window.Request){Request=Class.refactor(Request,{options:{useWaiter:false,waiterOptions:{},waiterTarget:false},initialize:function(options){this._send=this.send;this.send=function(options){if(this.waiter)this.waiter.start().chain(this._send.bind(this,options));else this._send(options);return this};this.previous(options);if(this.options.useWaiter&&(document.id(this.options.update)||document.id(this.options.waiterTarget))){this.waiter=new Waiter(this.options.waiterTarget||this.options.update,this.options.waiterOptions);['onComplete','onException','onCancel'].each(function(event){this.addEvent(event,this.waiter.stop.bind(this.waiter))},this)}}})}Element.Properties.waiter={set:function(options){var waiter=this.retrieve('waiter');return this.eliminate('waiter').store('waiter:options',options)},get:function(options){if(options||!this.retrieve('waiter')){if(options||!this.retrieve('waiter:options'))this.set('waiter',options);this.store('waiter',new Waiter(this,this.retrieve('waiter:options')))}return this.retrieve('waiter')}};Element.implement({wait:function(options){this.get('waiter',options).start();return this},release:function(){var opt=Array.link(arguments,{options:Object.type,callback:Function.type});this.get('waiter',opt.options).stop(opt.callback);return this}});