/*
 * jQuery UI Menu @VERSION
 *
 * Copyright (c) 2009 AUTHORS.txt (http://jqueryui.com/about)
 * Dual licensed under the MIT (MIT-LICENSE.txt)
 * and GPL (GPL-LICENSE.txt) licenses.
 *
 * http://docs.jquery.com/UI/Menu
 *
 * Depends:
 *	jquery.ui.core.js
 */
(function($) {

$.widget("ui.menu", {
	_init: function() {
		this.element.attr("role", "menu").attr("aria-activedescendant", "ui-active-menuitem").addClass("ui-menu ui-widget ui-widget-content ui-corner-bottom");
		var items = this.element.children("li");
		var self = this;
		items.addClass("ui-menu-item").attr("role", "menuitem")
		.children("a").attr("tabindex", "-1").addClass("ui-corner-all")
		// replace with event delegation
		.click(function(e) {
			// temporary
			e.preventDefault();
			self._trigger("selected", null, { item: $(this).parent() });
		})
		.mouseenter(function() {
			self.activeitem && self.deactivate(self.activeitem);
			self.activate($(this));
		});
		
	},
	
	activate: function(item) {
		this._trigger("focus", null, { item: item.parent() });
		this.activeitem = item.addClass("ui-state-hover").attr("id", "ui-active-menuitem");
	},
	
	deactivate: function(item) {
		item.removeClass("ui-state-hover").removeAttr("id", "ui-active-menuitem");
	},
	
	next: function() {
		if (!this.activeitem) {
			this.activate(this.element.children("li:first").children("a"));
			return;
		}
		this.deactivate(this.activeitem);
		this.activate(this.activeitem.parent().next().children("a"));
	},
	
	previous: function() {
		if (!this.activeitem) {
			this.activate(this.element.children("li:last").children("a"));
			return;
		}
		this.deactivate(this.activeitem);
		this.activate(this.activeitem.parent().prev().children("a"));
	},
	
	select: function() {
		// merge with click handler
		this._trigger("selected", null, { item: $(this.activeitem).parent() });
	}
	
});

})(jQuery);