var silkMenu = xb.core.object.extend( silkNodeList, {

		factory: function( menuDOMNode ) {
			var domNode = $( menuDOMNode ).find( "> [data-simply-list]" )[ 0 ];
			if ( typeof( domNode ) !== "undefined" ) {
				return new silkMenu( menuDOMNode, domNode );
			}
			return null;
		},

		ctor: function( menuDOMNode, domNode ) {
			var self = this;
			this.menuDOMNode = menuDOMNode;
			silkNodeList.prototype.ctor.call( this, domNode, "menu" );
			this.childNodes = this.parseDOM().childNodes;
			silkMenu.list( this ).init();
			$( this.domNode ).on( "click", function( evt ) {
				self.onClick( evt );
			} );

			this.mObserver = silkMutationObserver( this );
			this.mObserver.start();
		},

		onClick: function( evt ) {
			if ( $( evt.target ).hasClass( "menu-item-pulldown" ) ) {
				$( evt.target ).parents( "[data-simply-list-item]" ).toggleClass( "open" );
			} else {
				var href = evt.target.getAttribute( "href" );
				if ( href !== null ) {
					if ( href == "" ) {
						$( evt.target ).parents( "[data-simply-list-item]" ).toggleClass( "open" );
						evt.preventDefault();
					}
				}
			}
		},

		onDOMChange: function() {
			this.childNodes = this.parseDOM().childNodes;
			silkMenu.list( this ).init();
		}


	} );


	silkMenu.behaviour = xb.core.object.extend( {

		ctor: function( silkNode, domNode ) {
			this.silkNode = silkNode;
			this.domNode = ( typeof( domNode ) !== "undefined" ) ? domNode : silkNode.domNode;
		}

	} );

	silkMenu.list = xb.core.object.extend( silkMenu.behaviour, {

		init: function( level ) {
			var self = this;
			var level = ( typeof( level ) !== "undefined" ) ? level : 1;
			this.silkNode.each( function() {
				silkMenu.listItem( this ).init( level );
			} );
		}

	} );


	silkMenu.listItem = xb.core.object.extend( silkMenu.behaviour, {

		init: function( level ) {
			var self = this;
			var level = ( typeof( level ) !== "undefined" ) ? level : 1;
			var menuItem = $( this.domNode );
			var menuList = this.silkNode.get( "menu-list" );
			if ( menuList !== null ) {
				silkMenu.list( menuList ).init( level + 1 );
				if ( menuList.childNodes.length ) {
					menuItem.addClass( "withChildren" );
				} else {
					menuItem.removeClass( "withChildren" );
					menuItem.removeClass( "open" );
				}
			}
		}

	} );


	var $silkMenu = [];

	$( document ).on( "ready", function() {

		$( ".silk-object.menu" ).each( function() {
			var menu = silkMenu( this );
			if ( menu !== null ) {
				$silkMenu.push( menu );
			}
		} );

	} );