/**
 * Functions for the image listing, used by images.php only	
 * @author $Author: Wei Zhuo $
 * @version $Id: images.js 26 2004-03-31 02:35:21Z Wei Zhuo $
 * @package ImageManager
 */

	function i18n(str) {
        return HTMLArea._lc(str, 'ImageManager');
	}

	function changeDir(newDir) 
	{
		showMessage('Loading');

		// backend_url is defined in the calling page. For now we 
		// assume it has a trailing &

		location.href = _backend_url + "__function=images&dir="+newDir;
	}


	function newFolder(dir, newDir) 
	{
		location.href = _backend_url + "__function=images&dir="+dir+"&newDir="+newDir;
	}

	//update the dir list in the parent window.
	function updateDir(newDir)
	{
		var selection = window.top.document.getElementById('dirPath');
		if(selection)
		{
			for(var i = 0; i < selection.length; i++)
			{
				var thisDir = selection.options[i].text;
				if(thisDir == newDir)
				{
					selection.selectedIndex = i;
					showMessage('Loading');
					break;
				}
			}		
		}
	}

	function selectImage(filename, alt, width, height) 
	{
		var topDoc = window.top.document;
		
		var obj = topDoc.getElementById('f_url');  obj.value = filename;
		var obj = topDoc.getElementById('f_width');  obj.value = width;
		var obj = topDoc.getElementById('f_width'); obj.value = width;
		var obj = topDoc.getElementById('f_height'); obj.value = height;
		var obj = topDoc.getElementById('f_alt'); obj.value = alt;
		var obj = topDoc.getElementById('orginal_width'); obj.value = width;
		var obj = topDoc.getElementById('orginal_height'); obj.value = height;		
    // Set preview for the selected
    topDoc.getElementById('f_preview').src = window.parent._backend_url + '__function=thumbs&img=' + filename;
    
    update_selected();
	}

  var _current_selected = null;
  function update_selected()
  {
    var topDoc = window.top.document;
    if(_current_selected)
    {
      _current_selected.className = _current_selected.className.replace(/(^| )active( |$)/, '$1$2');
      _current_selected = null;
    }
    // Grab the current file, and highlight it if we have it
    var c_file = topDoc.getElementById('f_url').value;
    var selection = topDoc.getElementById('dirPath');
		var currentDir = selection.options[selection.selectedIndex].text;
    var dRe = new RegExp('^(' + currentDir.replace(/([\/\^$*+?.()|{}[\]])/g, '\\$1') + ')([^/]*)$');
    if(dRe.test(c_file))
    {
      var holder = document.getElementById('holder_' + asc2hex(RegExp.$2));
      if(holder)
      {
        _current_selected = holder;
        holder.className += ' active';
      }
    }
  }

  function asc2hex(str)
  {
    var hexstr = '';
    for(var i = 0; i < str.length; i++)
    {
      var hex = (str.charCodeAt(i)).toString(16);
      if(hex.length == 1) hex = '0' + hex;
      hexstr += hex;
    }
    return hexstr;
  }

	function showMessage(newMessage) 
	{
		var topDoc = window.top.document;

		var message = topDoc.getElementById('message');
		var messages = topDoc.getElementById('messages');
		if(message && messages)
		{
			if(message.firstChild)
				message.removeChild(message.firstChild);

			message.appendChild(topDoc.createTextNode(i18n(newMessage)));
			
			messages.style.display = "block";
		}
	}

	function addEvent(obj, evType, fn)
	{ 
		if (obj.addEventListener) { obj.addEventListener(evType, fn, true); return true; } 
		else if (obj.attachEvent) {  var r = obj.attachEvent("on"+evType, fn);  return r;  } 
		else {  return false; } 
	} 

	function confirmDeleteFile(file) 
	{
		if(confirm(i18n("Delete file?")))
			return true;
	
		return false;		
	}

	function confirmDeleteDir(dir, count) 
	{
		if(count > 0)
		{
			alert(i18n("Please delete all files/folders inside the folder you wish to delete first."));
			return;
		}

		if(confirm(i18n("Delete folder?"))) 
			return true;

		return false;
	}

	addEvent(window, 'load', init);