/*================================================================================= 
 XAJAX_UPLOAD.JS 
 VERSION:1.0.1
 DESCRIPTION:  THIS IS THE REQUIRED JAVASCRIPT FILE FOR  XAJAX UPLOAD:UPLOADER WITH PROGRESS BAR VERSION:1.0.1
 AUTHOR: JEREMY M. DILL
 REQUIREMENTS:  SEE UPLOAD_CONFIG_INC.PHP
================================================================================= 
* Copyright (c) 2007 JEREMY M. DILL (trydobe.com)
* This work is licensed under a Creative Commons Attribution-Share Alike 3.0  License
* http://creativecommons.org/licenses/by-sa/3.0/
* AUTHOR'S NOTE: THANKS TO THE OTHER DEVELOPERS OUT THERE WHO ESTABLISHED THE FOUNDATIONS OF THIS WORK.  
									BITS AND PIECES OF CONTRIBUTIONS FROM VARIOUS SOURCES INCLUDING THE FOLLOWING:
									http://www.raditha.com/megaupload/
									http://lists.geeklog.net/pipermail/geeklog-cvs/2005-June/000525.html
									http://labs.beffa.org/w2box/demo/
									http://tomas.epineer.se/archives/3
									http://jszen.blogspot.com/2005/05/secure-iframe-gotcha.html
									http://obokaman.obolog.com/mensaje/1596
									http://www.robertnyman.com/2005/11/07/the-ultimate-getelementsbyclassname/
									(sorry if any of these links become invalid)								
================================================================================= */
var count=0;
var numfiles=0;
var filecount=0;
var frameSet=false;
var frameAdv=0;
//GLOBAL DECLARATIONS
var sid,cgiPath,maxFile,maxNumFiles,autoFirst,uploadDir,cgiDebug,uploadSpeed,
	videofiletypes,picfiletypes,uploadVideo,uploadPic,uploadCompetitionImg,
	uploadCompetitionVideo,uploadDoc,uploadVThumb,uploadVTrailer,extMode, uploadShopImg, uploadShopVideo, 
	blankHTMLPath,showMax,archivefiletypes,uploadNewsVideo, uploadNewsArchives, uploadNewsImg, uploadMailFiles, mailfiletypes;

//RESET EVERYTHING BACK TO THE START.  SID WILL REMAIN THE SAME.
function startOver(){
  //alert("startOver()");
  xajax_getSid();
	document.getElementById("progress_bar").style.width="0%";
	document.getElementById("load_bar").style.display="block";
	document.getElementById("uldSubmit").disabled=true;
	if (autoFirst)	document.getElementById("uldSubmit").style.display="none";	
	document.getElementById("uldCancel").style.display="none";
	if(showMax) {
		document.getElementById("moreinfo1").style.display="block";
		if (null !== document.getElementById("moreinfo3")) document.getElementById("moreinfo3").style.display="block";
	}
	count=0;
	numfiles=0;
	filecount=0;
	addfail=false;
	bastardChild(document.getElementById("file_inputs"));
	bastardChild(document.getElementById("file_list"));
	addFileInput(false);
	makeIFrame();
}

// SUBMIT THE FORM AND START MONITORING WITH XAJAX
function postIt(){
  //alert("postIt()");
	document.getElementById("file"+eval(numfiles+1)).disabled=true;
	document.getElementById("uldCancel").style.display="block";
	document.getElementById("uldSubmit").disabled=true;
	if (null !== document.getElementById("moreinfo1")) document.getElementById("moreinfo1").style.display="none";	
	if (null !== document.getElementById("moreinfo3")) document.getElementById("moreinfo3").style.display="none";	
	if (null !== document.getElementById("moreinfo2")) document.getElementById("moreinfo2").style.display="none";	
	document.getElementById("okstatus").style.display="none";		
	document.getElementById("progress_bar").style.display="block";
	document.getElementById("loadtext").innerHTML="Upload Initiated.";
	document.forms['file_upload'].action=cgiPath+"?sid="+sid+"&maxfile="+maxFile+"&cgidebug="+cgiDebug+"&speed="+uploadSpeed+"&temp_dir="+uploadDir;
	//alert(document.forms['file_upload'].action); 
	document.forms['file_upload'].submit();
	linksArr=getElementsByAttribute(document.getElementById("file_list"), "a","id");
	for(var i=0; i<linksArr.length; i++){
		var upmsg = document.createElement("span");
		upmsg.className="upi";
		upmsg.innerHTML="-uploading";
		linksArr[i].parentNode.appendChild(upmsg); //add upload indicator
		linksArr[i].parentNode.removeChild(linksArr[i]); //remove delete link
	}
	getProgress();
}

// CALL THE XAJAX UPLOAD HANDLER.
function getProgress(){
  //alert("getProgress()");
	if(frameSet){
		//alert(count+'goingback'+sid);
		var subtype = 0;
		var type = document.getElementById("utype").value;
		var uid = document.getElementById("uid").value; 
		var comp_id = 0; 
		if(document.getElementById("comp_id")) comp_id = document.getElementById("comp_id").value; 
		//alert(type+"_"+uid); 
		if (type == uploadDoc) subtype = document.getElementById("st").value;
		//else subtype = 0;  
		xajax_uploadHandler(sid,count,type,subtype,uid,comp_id);
		count+=1;		
	} else {
		xajax_uploadHandler(sid,-1,0,0,0);  // CANCELLED BY USER
	}
}

// ADD FILE TO THE LIST OF FILES TO BE UPLOADED AND DISPLAY FILENAME IN A LIST.
function addFileInput(elem) {
    //alert("addFileInput()");
    var uploadtype = document.getElementById('utype').value; 
    //alert("uploadtype: "+uploadtype+", videofiletypes: "+videofiletypes+", picfiletypes: "+picfiletypes+", globals: "+uploadVideo+uploadPic+uploadDoc); 
    switch (uploadtype){
      case uploadVTrailer:
      case uploadCompetitionVideo:
      case uploadNewsVideo:
      case uploadShopVideo:
    	case uploadVideo: filetypes = videofiletypes; break;  
    	case uploadPic: 
    	case uploadCompetitionImg: 
    	case uploadNewsImg:
    	case uploadShopImg:
    	case uploadVThumb:
    	case uploadDoc: filetypes = picfiletypes; break;  
    	case uploadNewsArchives: filetypes = archivefiletypes; break; 
    	case uploadMailFiles: filetypes = mailfiletypes; break; 
    }
    //alert(filetypes); 
    //alert(maxNumFiles + "_" + filecount); 
		if (maxNumFiles==filecount) {
			document.getElementById("okstatus").style.display="block";
			document.getElementById("okstatus").className="warning";
			document.getElementById("okstatus").innerHTML="<b>Maximum number of  files is "+maxNumFiles+".</b><br />Please remove a file using before attempting to add another."
			f=document.getElementById("file"+(numfiles+1));
			f.parentNode.removeChild(f);
		} else {
			if ( elem != false)
				{
				numfiles+=1;
					filepath = elem.value.split("\\");
					filename = filepath[filepath.length-1];
					// CHECK FOR APPROPRIATE EXTENSIONS,
					if (filetypes!=""){
						extensionpath = filename.split(".");
						extension = extensionpath[extensionpath.length-1];
						ftypes=","+filetypes.toLowerCase()+",";
						tst=ftypes.indexOf(","+extension.toLowerCase()+",");
							if ( (extMode==1&&(tst==-1)) || (extMode==0&&(tst>=0)) ){ 
								if (extMode==0){
								  document.getElementById("okstatus").innerHTML="<b>Invalid filetype for &#8220;"+filename+"&#8221;. </b>";
								} else {
								  document.getElementById("okstatus").innerHTML="<b>Invalid filetype for &#8220;"+filename+"&#8221;. </b><br />Allowed file types include only "+filetypes+".";
								}
							addfail=true;
							}
					} //CLOSE if (filetypes
					// CHECK FOR DUPE FILENAMES
						linksArr=getElementsByAttribute(document.getElementById("file_list"), "span","id");
						 for(var i=0; i<linksArr.length; i++){
							if (linksArr[i].id==filename) {
								addfail=true;
								document.getElementById("okstatus").innerHTML="<b>Cannot add file &#8220;"+filename+"&#8221;.</b><br /> A file with that name was already added to the list.";
							}
						 }
					if (addfail){
						document.getElementById("okstatus").style.display="block";
						document.getElementById("okstatus").className="warning";
						filesInList=checkForChild(document.getElementById("file_list"));
						if(filesInList<1) document.getElementById("uldSubmit").disabled = true;
						numfiles=numfiles-1;
						addfail=false;
						return false;
					} else {
						elem.style.display="none";
						var newNode = document.createElement("li");
						document.getElementById("file_list").appendChild(newNode);
						newNode.innerHTML ="<span id="+filename+">"+filename+"</span> <a id='del"+numfiles+"' name='del"+numfiles+"' href='javascript:;' onclick='delFile(this,"+numfiles+")' class='delete_link'>[x]</a>";
						document.getElementById("okstatus").style.display="none";
						if (maxNumFiles>1) document.getElementById("moreinfo2").style.display="block";	
						document.getElementById("uldSubmit").disabled = false;
						filecount+=1;
					}
				}
		}
			var newNode = document.createElement("input");
			newNode.name="file"+eval(numfiles+1);
			newNode.id="file"+eval(numfiles+1);
			newNode.size="30";
			newNode.onchange=function(){addFileInput(this);}
			newNode.type="file";
			document.getElementById("file_inputs").appendChild(newNode);
			if (autoFirst&&elem!=false) postIt();	
}

//DELETES A FILE ELEMENT FROM VIEW, AND ITS HIDDEN FORM COUNTERPART.
function delFile (node,filenum){
  alert("delFile()");
	f=document.getElementById("file"+filenum);
	node.parentNode.parentNode.removeChild(node.parentNode);
	if(f.parentNode.removeChild(f)) {
		filecount=filecount-1;
	}
	document.getElementById("okstatus").style.display="none";
	filesInList=checkForChild(document.getElementById("file_list"));
	if(filesInList<1) document.getElementById("uldSubmit").disabled = true;
}

//REMOVES ALL CHILDREN FROM A NODE
function bastardChild(node){
  //alert("bastardChild()");
  while (node.childNodes.length){
    node.removeChild(node.childNodes[0]);
  }
}

//CHECK FOR EXISTENSE OF IMMEDIATE (1ST LEVEL) CHILD NODES AND RETURN NUMBER OF FOUND
function checkForChild(node){
  //alert("checkForChild()");
	var numnodes=0;
  while (numnodes<node.childNodes.length){
    numnodes+=1;
  }
	return numnodes;
}
	

// BUILD THE IFRAME TO SUBMIT INTO
function makeIFrame() {
  //alert("makeIFrame()");
  if(cgiDebug!=1){ 
    d_nested = document.getElementById("destination"+frameAdv);
    if (d_nested) throwaway_node = document.forms['file_upload'].removeChild(d_nested);
  } 
  frameAdv+=1;
  var iframe = document.createElement("iframe");
  iframe.setAttribute("src", blankHTMLPath);
  iframe.setAttribute("id","destination"+frameAdv);
  iframe.setAttribute("name","destination"+frameAdv);
   if(cgiDebug==1) { 
	  iframe.setAttribute("height", "150px");
	  iframe.setAttribute("width", "100%");
	  iframe.setAttribute("frameBorder", "1");
  } else { 
	  iframe.setAttribute("height", "0");
	  iframe.setAttribute("width", "0");
	  iframe.setAttribute("frameBorder", "0");
   } 
  if(document.forms['file_upload'].appendChild(iframe)) frameSet=true;
  document.forms['file_upload'].target="destination"+frameAdv;

  // FIX FOR IE.  ATTRIBUTES FOR NAME AND ID ARE NOT SET USING DOM.
  window.frames[window.frames.length-1].id=iframe.id;
  window.frames[window.frames.length-1].name=iframe.name;
  // END FIX
} 

// CANCEL BUTTON ACTION
function cancel() {
  //alert("cancel()");
	if(frameSet){
	  frameSet=false;
	}
	return false;
}

/*
    Copyright Robert Nyman, http://www.robertnyman.com
    Free to use if this text is included
*/
function getElementsByAttribute(oElm, strTagName, strAttributeName, strAttributeValue){
    //alert("getElementsByAttribute()");
    var arrElements = (strTagName == "*" && document.all)? document.all : oElm.getElementsByTagName(strTagName);
    var arrReturnElements = new Array();
    var oAttributeValue = (typeof strAttributeValue != "undefined")? new RegExp("(^|\\s)" + strAttributeValue + "(\\s|$)") : null;
    var oCurrent;
    var oAttribute;
    for(var i=0; i<arrElements.length; i++){
      oCurrent = arrElements[i];
      oAttribute = oCurrent.getAttribute(strAttributeName);
      if(typeof oAttribute == "string" && oAttribute.length > 0){
        if(typeof strAttributeValue == "undefined" || (oAttributeValue && oAttributeValue.test(oAttribute))){
            arrReturnElements.push(oCurrent);
        }
      }
    }
    return arrReturnElements;
}