// jQuery File Tree Plugin
//
// Version 1.01
//
// Cory S.N. LaViska
// A Beautiful Site (http://abeautifulsite.net/)
// 24 March 2008
//
// Visit http://abeautifulsite.net/notebook.php?article=58 for more information
//
// Usage: $('.fileTreeDemo').fileTree( options, callback )
//
// Options:  root           - root folder to display; default = /
//           script         - location of the serverside AJAX file to use; default = jqueryFileTree.php
//           folderEvent    - event to trigger expand/collapse; default = click
//           expandSpeed    - default = 500 (ms); use -1 for no animation
//           collapseSpeed  - default = 500 (ms); use -1 for no animation
//           expandEasing   - easing function to use on expand (optional)
//           collapseEasing - easing function to use on collapse (optional)
//           multiFolder    - whether or not to limit the browser to one subfolder at a time
//           loadMessage    - Message to display while initial tree loads (can be HTML)
//
// History:
//
// 1.01 - updated to work with foreign characters in directory/file names (12 April 2008)
// 1.00 - released (24 March 2008)
//
// TERMS OF USE
// 
// This plugin is dual-licensed under the GNU General Public License and the MIT License and
// is copyright 2008 A Beautiful Site, LLC. 
//
// modified for xPUD - added directory parsing function using XUL interfaces
if(jQuery) (function($){
	
	$.extend($.fn, {
		fileTree: function(o, h) {
			// Defaults
			if( !o ) var o = {};
			if( o.root == undefined ) o.root = '/';
			if( o.script == undefined ) o.script = 'jqueryFileTree.php';
			if( o.folderEvent == undefined ) o.folderEvent = 'click';
			if( o.expandSpeed == undefined ) o.expandSpeed= 500;
			if( o.collapseSpeed == undefined ) o.collapseSpeed= 500;
			if( o.expandEasing == undefined ) o.expandEasing = null;
			if( o.collapseEasing == undefined ) o.collapseEasing = null;
			if( o.multiFolder == undefined ) o.multiFolder = true;
			if( o.loadMessage == undefined ) o.loadMessage = 'Loading...';
			
			$(this).each( function() {
				
				function showTree(c, t) {
					$(c).addClass('wait');
					$(".jqueryFileTree.start").remove();
					
					var data = getDirectoryList(t);
					
					$(c).find('.start').html('');
					$(c).removeClass('wait').append(data);
					if( o.root == t ) $(c).find('UL:hidden').show(); else $(c).find('UL:hidden').slideDown({ duration: o.expandSpeed, easing: o.expandEasing });
					bindTree(c);
					
				}
				
				function bindTree(t) {
					$(t).find('LI A').bind(o.folderEvent, function() {
						if( $(this).parent().hasClass('directory') ) {
							if( $(this).parent().hasClass('collapsed') ) {
								// Expand
								if( !o.multiFolder ) {
									$(this).parent().parent().find('UL').slideUp({ duration: o.collapseSpeed, easing: o.collapseEasing });
									$(this).parent().parent().find('LI.directory').removeClass('expanded').addClass('collapsed');
								}
								$(this).parent().find('UL').remove(); // cleanup
								showTree( $(this).parent(), escape($(this).attr('rel').match( /.*\// )) );
								$(this).parent().removeClass('collapsed').addClass('expanded');
							} else {
								// Collapse
								$(this).parent().find('UL').slideUp({ duration: o.collapseSpeed, easing: o.collapseEasing });
								$(this).parent().removeClass('expanded').addClass('collapsed');
							}
						} else {
							h($(this).attr('rel'));
						}
						return false;
					});
					// Prevent A from triggering the # on non-click events
					if( o.folderEvent.toLowerCase != 'click' ) $(t).find('LI A').bind('click', function() { return false; });
				}
				// Loading message
				$(this).html('<ul class="jqueryFileTree start"><li class="wait">' + o.loadMessage + '<li></ul>');
				// Get the initial file list
				showTree( $(this), escape(o.root) );
			});
		}
	});
	
})(jQuery);

function getFileExtension(filename)
{
  var ext = /^.+\.([^.]+)$/.exec(filename);
  return ext == null ? "" : ext[1];
}

function getDirectoryList(dir)
{
	netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");

	var file = Components.classes['@mozilla.org/file/local;1'].createInstance(Components.interfaces.nsILocalFile);
	file.initWithPath(dir);

	var children = file.directoryEntries;
	var child;
	var fileList = [];
	var dirList = [];
	var result = '<ul class="jqueryFileTree" style="display: none;">';

	while (children.hasMoreElements()) {
		child = children.getNext().QueryInterface(Components.interfaces.nsILocalFile);
		var attributes = '';
		if (child.isHidden()) attributes+=' hidden ';
		if (child.isDirectory())
			dirList.push('<li class="directory collapsed'+attributes+'"><a href="#" rel="'+child.path+'/">'+ child.leafName +'</a></li>');
		else
			fileList.push('<li id="'+child.leafName+'" class="file ext_'+getFileExtension(child.leafName)+attributes+'"><a href="#" rel="'+child.path+'">'+ child.leafName +'</a></li>');
	}
	dirList.sort();
	fileList.sort();
	result += dirList.join('\n');
	result += fileList.join('\n');
	result += '</ul>';
	result += '<script>showMenu();</script>';
	return result;
}
