//MooTools More, <http://mootools.net/more>. Copyright (c) 2006-2009 Aaron Newton <http://clientcide.com/>, Valerio Proietti <http://mad4milk.net> & the MooTools team <http://mootools.net/developers>, MIT Style License.

MooTools.More={version:"1.2.4.2dev",build:"%build%"};Request.Queue=new Class({Implements:[Options,Events],Binds:["attach","request","complete","cancel","success","failure","exception"],options:{stopOnFailure:true,autoAdvance:true,concurrent:1,requests:{}},initialize:function(a){if(a){var b=a.requests;
delete a.requests;}this.setOptions(a);this.requests=new Hash;this.queue=[];this.reqBinders={};if(b){this.addRequests(b);}},addRequest:function(a,b){this.requests.set(a,b);
this.attach(a,b);return this;},addRequests:function(a){$each(a,function(c,b){this.addRequest(b,c);},this);return this;},getName:function(a){return this.requests.keyOf(a);
},attach:function(a,b){if(b._groupSend){return this;}["request","complete","cancel","success","failure","exception"].each(function(c){if(!this.reqBinders[a]){this.reqBinders[a]={};
}this.reqBinders[a][c]=function(){this["on"+c.capitalize()].apply(this,[a,b].extend(arguments));}.bind(this);b.addEvent(c,this.reqBinders[a][c]);},this);
b._groupSend=b.send;b.send=function(c){this.send(a,c);return b;}.bind(this);return this;},removeRequest:function(b){var a=$type(b)=="object"?this.getName(b):b;
if(!a&&$type(a)!="string"){return this;}b=this.requests.get(a);if(!b){return this;}["request","complete","cancel","success","failure","exception"].each(function(c){b.removeEvent(c,this.reqBinders[a][c]);
},this);b.send=b._groupSend;delete b._groupSend;return this;},getRunning:function(){return this.requests.filter(function(a){return a.running;});},isRunning:function(){return !!(this.getRunning().getKeys().length);
},send:function(b,a){var c=function(){this.requests.get(b)._groupSend(a);this.queue.erase(c);}.bind(this);c.name=b;if(this.getRunning().getKeys().length>=this.options.concurrent||(this.error&&this.options.stopOnFailure)){this.queue.push(c);
}else{c();}return this;},hasNext:function(a){return(!a)?!!this.queue.length:!!this.queue.filter(function(b){return b.name==a;}).length;},resume:function(){this.error=false;
(this.options.concurrent-this.getRunning().getKeys().length).times(this.runNext,this);return this;},runNext:function(a){if(!this.queue.length){return this;
}if(!a){this.queue[0]();}else{var b;this.queue.each(function(c){if(!b&&c.name==a){b=true;c();}});}return this;},runAll:function(){this.queue.each(function(a){a();
});return this;},clear:function(a){if(!a){this.queue.empty();}else{this.queue=this.queue.map(function(b){if(b.name!=a){return b;}else{return false;}}).filter(function(b){return b;
});}return this;},cancel:function(a){this.requests.get(a).cancel();return this;},onRequest:function(){this.fireEvent("request",arguments);},onComplete:function(){this.fireEvent("complete",arguments);
if(!this.queue.length){this.fireEvent("end");}},onCancel:function(){if(this.options.autoAdvance&&!this.error){this.runNext();}this.fireEvent("cancel",arguments);
},onSuccess:function(){if(this.options.autoAdvance&&!this.error){this.runNext();}this.fireEvent("success",arguments);},onFailure:function(){this.error=true;
if(!this.options.stopOnFailure&&this.options.autoAdvance){this.runNext();}this.fireEvent("failure",arguments);},onException:function(){this.error=true;
if(!this.options.stopOnFailure&&this.options.autoAdvance){this.runNext();}this.fireEvent("exception",arguments);}});