/*
	1.1: Möglichkeit Files upzuloaden und danach mittels der Index.php Datei ein _FILES Objekt bereitzustellen.
	1.2: Umstellung auf eine KLasse
	*/
	
var oAjax = new qxcAjax ();
oAjax.index();
//<+1.2: Rückwärtskompatibel
function qxcAjaxSet(dataSource,retFunc,methode,oForm)
{
	
	oAjax.set(dataSource,retFunc,methode,oForm);
}
//+>

//<+1.2
function qxcAjax () 
{		
	
	this.index = function ()
	{
		this.XMLHttpRequestObject = false;
		
		if(window.XMLHttpRequest)
		{
			this.XMLHttpRequestObject = new XMLHttpRequest();
		} 
		else if(window.ActiveXObject)
		{
			this.XMLHttpRequestObject = new ActiveXObject("Microsoft.XMLHTTP");
		}
	}

	this.onreadystatechange = function()
	{
		
		if(oAjax.XMLHttpRequestObject.readyState == 4)
		{
			if(oAjax.XMLHttpRequestObject.status == 200)
			{
				
				//alert(oAjax.retFunc);

                                var sRet=oAjax.XMLHttpRequestObject.responseText;
								
								sRet=sRet.replace(/^\s\s*/, '').replace(/\s\s*$/, '')
								
                                if(sRet.substring(0,1)=="{")
                                {

                                    eval("sRet = "+sRet);
                                }

				eval(oAjax.retFunc+"(sRet)");
			}
			else
			{
                            //Wenn zuviele Ajax Abfragen hinter einander gestarten werden kann es vorkommen das 0 zurück kommt, und das wird dann ausgegeben.
				//alert(oAjax.XMLHttpRequestObject.status);
				
			}
		}
	}

	
	this.set = function (dataSource,retFunc,methode,oForm)
	{
            
		this.retFunc=retFunc;
		if (typeof methode == "undefined") 
		{
			methode = "GET";
		}
     

		
		if(this.XMLHttpRequestObject)
		{
			
			this.XMLHttpRequestObject.open(methode, dataSource);
			
			this.XMLHttpRequestObject.onreadystatechange = this.onreadystatechange;
			
			if(methode=="GET")
			{
				this.XMLHttpRequestObject.send(null);
			}
			else
			{
				
				//POST Parameter
				
				//<+1.1
				var isFileUpload=false;
				//+>
				this.postarg="";
				
                

				for(i=0;i<oForm.elements.length;i++)
				{

					if(((oForm.elements[i].type!="radio" && oForm.elements[i].type!="checkbox") || oForm.elements[i].checked) && oForm.elements[i].value!=null)
					{
						if(oForm.elements[i].length>1 && oForm.elements[i].type!="select-one")
                                                {
                            

                                                    for(j=0;j<oForm.elements[i].length;j++)
                                                    {

                                                        if(oForm.elements[i].type!="select-multiple" || oForm.elements[i][j].selected)
                                                        {
                                                            this.postarg+=oForm.elements[i].name+"[]="+oUrl.encode(oForm.elements[i][j].value)+"&";

                                                        }


                                                    }
                            
                                                }
                                                else
                                                {
                                                    this.postarg+=oForm.elements[i].name+"="+oUrl.encode(oForm.elements[i].value)+"&";
                                                }
						
					}
					
					//<+1.1
					if(oForm.elements[i].type=="file")
					{
						isFileUpload=true;
					}
					//+>

				}

				
				//<+1.1
				if(isFileUpload)
				{
					
					
					//IFrame erzeugen
					/*var oIFrame = document.createElement("iFrame");
					oIFrame.src="";
					//oIFrame.style.visibility="hidden";
					oIFrame.name="qxcAjaxFileUploadArea";
					oIFrame.id="qxcAjaxFileUploadArea";
					oIFrame.style.width="500px";
					oIFrame.style.height="500px";
					oIFrame.style.border="1px solid #ff0000";
					
					//IFrame einh�ngen
					document.getElementsByTagName("body")[0].appendChild(oIFrame);
					*/
					
					
					
					
					//Formular action anpassen
					var sAction=oForm.action;
					oForm.action="fileUpload.php";

                                        
                    
					//Formular enctype anpassen
					var sEncType=oForm.enctype;
					oForm.enctype="multipart/form-data";

                    

					//Formular target anpassen
					var sTarget=oForm.target;
					oForm.target="qxcAjaxFileUploadArea";
                                        
					
					


                    
					
					//Formular abschicken

                                        
					oForm.submit();
                                        
					
					
					//Formular wieder zuruecksetzen
					oForm.action=sAction;
					oForm.enctype=sEncType;
					oForm.target=sTarget;
					
				}
				//+>
				else
				{
					this.goPost(false)
				}
				
			}
		}
		
	}	
	this.goPost = function(file)
	{
                
		if(!file==false)
		{
			//Element POST["_FILES"] schreiben.
			var iLength=file.length
			for(i=0;i<iLength;i++)
			{
				this.postarg+="_FILES["+file[i]['key']+"][name]="+file[i]['name']+"&";
				this.postarg+="_FILES["+file[i]['key']+"][type]="+file[i]['type']+"&";
				this.postarg+="_FILES["+file[i]['key']+"][tmp_name]="+file[i]['tmp_name']+"&";
				this.postarg+="_FILES["+file[i]['key']+"][error]="+file[i]['error']+"&";
				this.postarg+="_FILES["+file[i]['key']+"][size]="+file[i]['size']+"&";
			}
			
			
			
			//IFrame l�schen
			//var oIFrame=document.getElementById("qxcAjaxFileUploadArea");
			//document.getElementsByTagName("body")[0].removeChild(oIFrame);
		}
		
		
		//Send the proper header information along with the request
		this.XMLHttpRequestObject.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
		this.XMLHttpRequestObject.setRequestHeader("Content-length", this.postarg.length);
		this.XMLHttpRequestObject.setRequestHeader("Connection", "close");
		this.XMLHttpRequestObject.send(this.postarg);
		
	}
	
}
//+>