/////////////////////////////////////////////////////////////////////////////////////////
//Base Requestor
/////////////////////////////////////////////////////////////////////////////////////////
BaseRequestor= Class.create();
	BaseRequestor.prototype =  {
	  initialize: function() {
	  },	
		 
	  execute : function( URL, params, options ) {
		if(options.onInitializeEvent==true)
		{	
			options.controller.onRequestEvent(options.event,
								 			  BaseRequestor.State.INITIALIZE, 
								 			  null);					
		}
		
		this.makeRequest( URL, params, options );	
		
		  if( options.onTimeoutEvent==true		 &&
			  options.onTimeoutLength!=undefined &&
			  options.onTimeoutLength!=0 )
		 {
			setTimeout(function (){ 
						if(options.executing)
						{
							options.executing = false;
							options.controller.onRequestEvent(options.event,
											  			  	  BaseRequestor.State.TIMEOUT,
											  			  	  null);
						}
					  }, options.onTimeoutLength);
		 }
	  },
	  
	   /**
	   * Override Methods Below For Your Requestor Specific Implementation
	   */
	   makeRequest: function(URL, params, options){		   
	   }
};

BaseRequestor.State = [];
BaseRequestor.State.INITIALIZE	="INITIALIZE";
BaseRequestor.State.SUCCESS		="SUCCESS";
BaseRequestor.State.ERROR		="ERROR";
BaseRequestor.State.TIMEOUT		="TIMEOUT";

/////////////////////////////////////////////////////////////////////////////////////////
//Prototype/Ajaxtags Requestor
//	-- Requires include of prototype_ajax.js
/////////////////////////////////////////////////////////////////////////////////////////
AJRequestor= Class.create();
  AJRequestor.prototype = Object.extend(new BaseRequestor(),  {
	  initialize: function(asynchronous, evalScripts) {
		  this.asynchronous = asynchronous || true;
		  this.evalScripts	= evalScripts || true;
	  },	
	  
	  makeRequest: function(URL, params, options){
			try
			{
				var aj = new Ajax.Request(URL, {  asynchronous: this.asynchronous,
												  method: options.doPost ? 'post':'get',
												  evalScripts: this.evalScripts,
												  parameters: params,
												  onSuccess: function(request) {
												 	if(options.executing)
													{														
														try
														{
															options.executing = false;
															if(options.onSuccessEvent==true)
															{
																options.controller.onRequestEvent(options.event, 
																								  BaseRequestor.State.SUCCESS, 
																								  options.controller.parser.load(request));
															}
														}
														catch(e)
														{ 
															options.executing = false;											
															if(options.onErrorEvent==true)
															{
																options.controller.onRequestEvent(options.event, 
																								  BaseRequestor.State.ERROR, 
																								  e.message);
															}
														}
													}
												  },
												  onFailure: function(request) {													  
													if(options.executing)
													{
														options.executing = false;											
														if(options.onErrorEvent==true)
														{
															options.controller.onRequestEvent(options.event, 
																							  BaseRequestor.State.ERROR, 
																							  null);
														}
													}
												  }
												});	
			}
			catch(e)
			{ 
				if(options.executing)
				{
					options.executing = false;											
					if(options.onErrorEvent==true)
					{
						options.controller.onRequestEvent(options.event, 
														  BaseRequestor.State.ERROR, 
														  e.message);
					}
				}
			}
		}						  
});
  
/////////////////////////////////////////////////////////////////////////////////////////
//Prototype/Ajaxtags Requestor
//	-- Requires include of prototype_ajax.js
/////////////////////////////////////////////////////////////////////////////////////////
FlashProxyRequestor= Class.create();
  FlashProxyRequestor.prototype = Object.extend(new BaseRequestor(),  {
	  initialize: function(proxyname,contenttype, pendingtimeout) {
		  this.proxyname	= proxyname;
		  this.contenttype	= contenttype || "xml";
		  this.pendingtimeout = pendingtimeout || 100;
	  },
	  
	   makeRequest: function(URL, params, options){	
		var obj = this;
		var random = new Date().getTime();
	  	var flashProxy = (navigator.appName.indexOf("Microsoft") != -1) ? window[this.proxyname] : document[this.proxyname];

		if((flashProxy!=null) && ((typeof flashProxy) != 'undefined') &&  ((typeof window["flproxy"+random]) == 'undefined') )
	  	{
            try
            {   
				//Define anonymous to be called on command success...
				window["flproxy"+random] = function (request)
										   {	
										   		if(options.executing)
												{														
													try
													{
														var requestWrapper = [];
															if(obj.contenttype=="xml") {
																requestWrapper.responseXML	= obj.getXML(request);
															}
															else {
																requestWrapper.responseText = request;
															}
															
															options.executing = false;
															if(options.onSuccessEvent==true)
															{
																options.controller.onRequestEvent(options.event, 
																								  BaseRequestor.State.SUCCESS, 
																								  options.controller.parser.load(requestWrapper));
															}
													}
													catch(e)
													{ 
														options.executing = false;											
														if(options.onErrorEvent==true)
														{
															options.controller.onRequestEvent(options.event, 
																							  BaseRequestor.State.ERROR, 
																							  e.message);
														}
													}
												}
											};
				
				if(obj.contenttype=="xml") {
					flashProxy.callGetData(URL+"?"+params,
										   'window.flproxy' + random);
				}
				else {
					flashProxy.callGetDataEx(URL+"?"+params,
									     	'window.flproxy' + random);
				}
            }
            catch(e)
			{ 
				if(options.executing)
				{
					options.executing = false;											
					if(options.onErrorEvent==true)
					{
						options.controller.onRequestEvent(options.event, 
														  BaseRequestor.State.ERROR, 
														  e.message);
					}
				}
			}
        }
		else
		{
			setTimeout(function (){obj.makeRequest(URL, params, options );}, this.pendingtimeout);
		}
	  },
	  
	  getXML : function(xmlData){
			var xmlDoc = null;
			var browser = navigator.appName;
			
			xmlData = xmlData.replace(/&/gi,"&").replace(/'/gi,"'");
			if(browser.indexOf('Microsoft') != -1)
			{
				xmlDoc = new ActiveXObject("Microsoft.XMLDOM");
				xmlDoc.async="false";
				xmlDoc.loadXML(xmlData);					
			} 
			else
			{
				var parser = new DOMParser();
				xmlDoc = parser.parseFromString(xmlData,"text/xml");					
			}
			
			return xmlDoc;
	}	
});