/*================================================================================= 
 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 frameSet=false;

//GLOBAL DECLARATIONS
var cgiPath,blankHTMLPath,language;
var locallang = new Array();

function ams_libStartOver(formId) {
  // set iframe parameters, if debug is activated
  var iframe = document.createElement("iframe");
  iframe.setAttribute("src", blankHTMLPath);
  iframe.setAttribute("id", formId+"iframe");
  iframe.setAttribute("name", formId+"iframe");
  if($('#'+formId+' input[name=cgidebug]')[0].value == 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( $('#'+formId)[0].appendChild(iframe) ) {
    frameload = $('#'+formId+' input[name=frameload]')[0];
    frameload.value = true;
    $('#'+formId)[0].target = formId+"iframe";
  }
  // 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
}

// SUBMIT THE FORM AND START MONITORING WITH XAJAX
function ams_libUpload(formId, onComplete) {
  // gibt es etwas hochzuladen?
  files = $('#'+formId+' :file');
  uploads = new Array();
  for (i=0; i<files.length; i++) {
    if (files[i].value) {
      uploads.push(files[i]);
    }
  }
  if (uploads.length > 0) {
    $('#'+formId+'uploadact').css('width', '0%');
    $('#'+formId+'uploadcancel').css('display', 'block');
    $('#'+formId+'uploadbar').css('display', 'block');
    $('#'+formId+'uploadinfo').css('display', 'block');
    $('#'+formId+'uploadinfo').text(locallang[language]['upload.uploadInitiated']);
    sendButton = $('#'+formId+'send')[0];
    if (sendButton) {
      sendButton.disabled=true;
    }

	form = $('#'+formId);
    if (form) {
      form.attr('method', 'post');
      form.attr('enctype', 'multipart/form-data');
      form.attr('encoding', 'multipart/form-data');
      form.attr('action', cgiPath+"?sid="+$('#'+formId+' input[name=sid]')[0].value
                          +"&amp;maxfile="+$('#'+formId+' input[name=maxfilesize]')[0].value
                          +"&amp;cgidebug="+$('#'+formId+' input[name=cgidebug]')[0].value
                          +"&amp;speed="+$('#'+formId+' input[name=speed]')[0].value
               );
  	  form[0].submit();
	  ams_libGetProgress(onComplete, formId, 0);
    }
    else {
      alert('no form');
    }
  }
  else {
    //nichts hochzuladen
    eval(onComplete);
  }
  return false;
}

// CALL THE XAJAX UPLOAD HANDLER.
function ams_libGetProgress(onComplete, formId, count) {
  if($('#'+formId+' input[name=frameload]')[0].value == 'true') {
    count += 1;
    ams_libuploadHandler($('#'+formId+' input[name=sid]')[0].value, count, onComplete, formId);
  }
  else {
	ams_libuploadHandler($('#'+formId+' input[name=sid]')[0].value, -1, onComplete, formId);  // CANCELLED BY USER
  }
}


function ams_libCheckFileInput(elem) {
  if(elem) {
    // CHECK FOR APPROPRIATE EXTENSIONS,
    filetypes = ''; 
    form = ams_libGetForm(elem);
    if (form) {
      filetypes = $('#'+form.id+' input[name='+elem.name+'filetypes]')[0].value;
    }
    if (filetypes){
      filepath = elem.value.split("\\");
      filename = filepath[filepath.length-1];
      extensionpath = filename.split(".");
      extension = extensionpath[extensionpath.length-1];
      ftypes=","+filetypes.toLowerCase()+",";
      tst=ftypes.indexOf(","+extension.toLowerCase()+",");
      if (tst == -1 ) {
        elem.value = '';
        messageTag = $('#'+form.id+' input[name='+elem.name+']').parent().next()[0];
        if (messageTag) {
          messageTag.innerHTML = locallang[language]['upload.errorFileTypeForFileName'].replace(/%s/, filename);
          messageTag.style.display = 'block';
        }
        return;
      }
    }
    // Prüfung erfolgreich durchlaufen, daher eventuelle Fehlermeldung ausblenden
    messageTag = $('#'+form.id+' input[name='+elem.name+']').parent().next()[0];
    if (messageTag) {
      messageTag.style.display = 'none';
    }        
  }	
}

function ams_libGetForm(elem) {
  if (elem) {
    if (elem.tagName && (elem.tagName.toUpperCase() == "FORM")) {
      return elem;
    }
    else {
      if (elem.parentNode) {
        return ams_libGetForm(elem.parentNode);
      }
      else {
        return '';
      }
    }
  }
  else {
    return '';
  }
}


// CANCEL BUTTON ACTION
function ams_libCancel(formId) {
  $('#'+formId+' input[name=frameload]')[0].value = false;
  return false;
}