WP_Admin_Bar

15#[AllowDynamicProperties]16class WP_Admin_Bar {17	private $nodes = array();18	private $bound = false;19	public $user;20 21	/**22	 * Deprecated menu property.23	 *24	 * @since 3.1.025	 * @deprecated 3.3.0 Modify admin bar nodes with WP_Admin_Bar::get_node(),26	 *                   WP_Admin_Bar::add_node(), and WP_Admin_Bar::remove_node().27	 * @var array28	 */29	public $menu = array();30 31	/**32	 * Initializes the admin bar.33	 *34	 * @since 3.1.035	 */36	public function initialize() {37		$this->user = new stdClass();38 39		if ( is_user_logged_in() ) {40			/* Populate settings we need for the menu based on the current user. */41			$this->user->blogs = get_blogs_of_user( get_current_user_id() );42			if ( is_multisite() ) {43				$this->user->active_blog    = get_active_blog_for_user( get_current_user_id() );44				$this->user->domain         = empty( $this->user->active_blog ) ? user_admin_url() : trailingslashit( get_home_url( $this->user->active_blog->blog_id ) );45				$this->user->account_domain = $this->user->domain;46			} else {47				$this->user->active_blog    = $this->user->blogs[ get_current_blog_id() ];48				$this->user->domain         = trailingslashit( home_url() );49				$this->user->account_domain = $this->user->domain;50			}51		}52 53		add_action( 'wp_head', 'wp_admin_bar_header' );54 55		add_action( 'admin_head', 'wp_admin_bar_header' );56 57		if ( current_theme_supports( 'admin-bar' ) ) {58			/**59			 * To remove the default padding styles from WordPress for the Toolbar, use the following code:60			 * add_theme_support( 'admin-bar', array( 'callback' => '__return_false' ) );61			 */62			$admin_bar_args  = get_theme_support( 'admin-bar' );63			$header_callback = $admin_bar_args[0]['callback'];64		}65 66		if ( empty( $header_callback ) ) {67			$header_callback = '_admin_bar_bump_cb';68		}69 70		add_action( 'wp_head', $header_callback );71 72		wp_enqueue_script( 'admin-bar' );73		wp_enqueue_style( 'admin-bar' );74 75		/**76		 * Fires after WP_Admin_Bar is initialized.77		 *78		 * @since 3.1.079		 */80		do_action( 'admin_bar_init' );81	}82 83	/**84	 * Adds a node (menu item) to the admin bar menu.85	 *86	 * @since 3.3.087	 *88	 * @param array $node The attributes that define the node.89	 */90	public function add_menu( $node ) {91		$this->add_node( $node );92	}93 94	/**