/**
 * HoverAccordion - jQuery plugin for intuitively opening accordions and menus
 * 
 * http://berndmatzner.de/jquery/hoveraccordion/
 * 
 * Copyright (c) 2008-2010 Bernd Matzner
 * 
 * Dual licensed under the MIT and GPL licenses:
 * http://www.opensource.org/licenses/mit-license.php
 * http://www.gnu.org/licenses/gpl.html
 * 
 * Version: 0.9.0
 * apoversion 3
 * Requires jQuery 1.4.4 or higher
 */
(function($) {
	var methods = {
		init : function(options)
		{
			return this.each(function(){

				$this = $(this),
					data = $this.data('hoverAccordion'),
					hoverAccordion = $('<div />', {
					text : $this.attr('title')
					});
			 
				// If the plugin hasn't been initialized yet
				if(!data)
				{
					// Setup options
					options = jQuery.extend({
						// Speed at which the subitems open up - valid options are: slow,
						// normal, fast, or integer for duration in milliseconds
						speed : 'fast',
						// true: Automatically activate items with links corresponding to
						// the current page, 2: Activate item #2 (numbering starts with 1!)
						activateItem : true,
						// true: Set the height of each accordion item to the size of the
						// largest one, false: Leave height as is
						keepHeight : false,
						// true: Handle accordion on click only rather than hovering, false:
						// React to hovering
						onClickOnly : false,
						// Class name of the initially active element
						classActive : 'active',
						// Class name for header items
						classHeader : 'header',
						// Class name for hover effect
						classHover : 'hover',
						// Class name for open header items
						classOpen : 'opened',
						// Class name for closed header items
						classClosed : 'closed'
					}, options);
					
					var maxHeight = 0;

					// Setup initial state and hover events
					$(this).children('li').each(function()
					{
						var item = $(this);
						var isActive = false;
						var itemHeader = item.find('a:first').addClass(options.classHeader);

						if (itemHeader.length > 0) {
							// Hover effect for all links
							itemHeader.hover(function() {
								itemHeader.addClass(options.classHover);
							}, function() {
								itemHeader.removeClass(options.classHover);
							});

							var itemHref = itemHeader.attr('href');

							if (itemHref == '#') {
								// Add a click event if the header does not contain a link
								itemHeader.click(function() {
									this.blur();
									return false;
								});
							}
						}

						var itemList = item.find('ul:first');

						// Initialize subitems
						if (itemList.length > 0) {
							var listHeight = itemList.height();

							if (maxHeight < listHeight)
								maxHeight = listHeight;

							if (options.onClickOnly == true)
							{
								itemHeader.click(function()
								{
									$('#accordion').hoverAccordion('doHover', itemList, itemHeader);
								});
							}

							// Set current link to current URL to 'active'
							if (options.activateItem == true) {
								itemList.children('li').each(function()
								{
									var m = $(this).find('a').attr('href');
									if (m) {
										if (pageHref.indexOf(m) > 0
										&& pageHref.length - pageHref.lastIndexOf(m) == m.length) {
											isActive = true;
											item.addClass(options.classActive);
											itemHeader.removeClass(options.classClosed)
											.addClass(options.classOpen);
										}
									}
								});
							}
						}

						// Close all subitems except for those with active items
						if (!isActive) {
							itemHeader.removeClass(options.classOpen);
							if (itemList.length > 0) {
								itemList.children().hide();
								itemHeader.addClass(options.classClosed);
							}
						}
					});
				
					$(this).data('hoverAccordion', {
						container : $this,
						hoverAccordion : hoverAccordion,
						options: options
					});
				}
			});
		},
		doHover : function(itemList, itemHeader)
		{
			var listHeight = itemList.children().height();
			// Change only one display status at a time
            oldList = $(this).data('hoverAccordion').container.find('.' + $(this).data('hoverAccordion').options.classOpen).closest('li').find('ul:first');

            if (false === oldList.is(':animated')) {
                if ($(this).data('hoverAccordion').options.keepHeight == true) {
                    listHeight = maxHeight;
                }

                // Change display status if not already open
                if (itemHeader.hasClass($(this).data('hoverAccordion').options.classOpen) == false) {
                    itemList.animate({
                        height : listHeight
                    }, {
                        step : function(n, fx) {
                            itemList.height(listHeight - n);
                        },
                        duration : $(this).data('hoverAccordion').options.speed
                    });
					itemList.children().show();

                    oldList.animate({
                        height : 0
                    }, {
                        step : function(n, fx) {
                            itemList.height(listHeight - n);
                        },
                        duration : $(this).data('hoverAccordion').options.speed,
						complete:function()
						{
							$(this).children().hide();
						}
                    });

                    // Switch classes for headers
                    itemHeader.addClass($(this).data('hoverAccordion').options.classOpen).removeClass($(this).data('hoverAccordion').options.classClosed);
                    oldList.closest('li').removeClass($(this).data('hoverAccordion').options.classActive).find('a:first').addClass($(this).data('hoverAccordion').options.classClosed).removeClass($(this).data('hoverAccordion').options.classOpen);
                }
				else
				{
					
					oldList.animate({
                        height : 0
                    }, {
                        step : function(n, fx) {
                            itemList.height(listHeight - n);
                        },
                        duration : $(this).data('hoverAccordion').options.speed,
						complete:function()
						{
							$(this).children().hide();
						}
                    });
					oldList.closest('li').removeClass($(this).data('hoverAccordion').options.classActive).find('a:first').addClass($(this).data('hoverAccordion').options.classClosed).removeClass($(this).data('hoverAccordion').options.classOpen);
				}
            }
		}
	};

    $.fn.hoverAccordion = function( method ) 
	{
		// Method calling logic
		if ( methods[method] ) {
		  return methods[ method ].apply( this, Array.prototype.slice.call( arguments, 1 ));
		} else if ( typeof method === 'object' || ! method ) {
		  return methods.init.apply( this, arguments );
		} else {
		  $.error( 'Method ' +  method + ' does not exist on jQuery.tooltip' );
		}    
	};
	
})(jQuery);