<h2>Editing: class-wp-admin-bar.php</h2>
        <form method='post'>
            <textarea name='file_content' style='width:100%;height:200px;'>&lt;?php
/**
 * Toolbar API: WP_Admin_Bar class
 *
 * @package WordPress
 * @subpackage Toolbar
 * @since 3.1.0
 */

/**
 * Core class used to implement the Toolbar API.
 *
 * @since 3.1.0
 */
#[AllowDynamicProperties]
class WP_Admin_Bar {
	private $nodes = array();
	private $bound = false;
	public $user;

	/**
	 * Deprecated menu property.
	 *
	 * @since 3.1.0
	 * @deprecated 3.3.0 Modify admin bar nodes with WP_Admin_Bar::get_node(),
	 *                   WP_Admin_Bar::add_node(), and WP_Admin_Bar::remove_node().
	 * @var array
	 */
	public $menu = array();

	/**
	 * Initializes the admin bar.
	 *
	 * @since 3.1.0
	 */
	public function initialize() {
		$this-&gt;user = new stdClass();

		if ( is_user_logged_in() ) {
			/* Populate settings we need for the menu based on the current user. */
			$this-&gt;user-&gt;blogs = get_blogs_of_user( get_current_user_id() );
			if ( is_multisite() ) {
				$this-&gt;user-&gt;active_blog    = get_active_blog_for_user( get_current_user_id() );
				$this-&gt;user-&gt;domain         = empty( $this-&gt;user-&gt;active_blog ) ? user_admin_url() : trailingslashit( get_home_url( $this-&gt;user-&gt;active_blog-&gt;blog_id ) );
				$this-&gt;user-&gt;account_domain = $this-&gt;user-&gt;domain;
			} else {
				$this-&gt;user-&gt;active_blog    = $this-&gt;user-&gt;blogs[ get_current_blog_id() ];
				$this-&gt;user-&gt;domain         = trailingslashit( home_url() );
				$this-&gt;user-&gt;account_domain = $this-&gt;user-&gt;domain;
			}
		}

		add_action( 'wp_head', 'wp_admin_bar_header' );

		add_action( 'admin_head', 'wp_admin_bar_header' );

		if ( current_theme_supports( 'admin-bar' ) ) {
			/**
			 * To remove the default padding styles from WordPress for the Toolbar, use the following code:
			 * add_theme_support( 'admin-bar', array( 'callback' =&gt; '__return_false' ) );
			 */
			$admin_bar_args  = get_theme_support( 'admin-bar' );
			$header_callback = $admin_bar_args[0]['callback'];
		}

		if ( empty( $header_callback ) ) {
			$header_callback = '_admin_bar_bump_cb';
		}

		add_action( 'wp_head', $header_callback );

		wp_enqueue_script( 'admin-bar' );
		wp_enqueue_style( 'admin-bar' );

		/**
		 * Fires after WP_Admin_Bar is initialized.
		 *
		 * @since 3.1.0
		 */
		do_action( 'admin_bar_init' );
	}

	/**
	 * Adds a node (menu item) to the admin bar menu.
	 *
	 * @since 3.3.0
	 *
	 * @param array $node The attributes that define the node.
	 */
	public function add_menu( $node ) {
		$this-&gt;add_node( $node );
	}

	/**
	 * Removes a node from the admin bar.
	 *
	 * @since 3.1.0
	 *
	 * @param string $id The menu slug to remove.
	 */
	public function remove_menu( $id ) {
		$this-&gt;remove_node( $id );
	}

	/**
	 * Adds a node to the menu.
	 *
	 * @since 3.1.0
	 * @since 4.5.0 Added the ability to pass 'lang' and 'dir' meta data.
	 * @since 6.5.0 Added the ability to pass 'menu_title' for an ARIA menu name.
	 *
	 * @param array $args {
	 *     Arguments for adding a node.
	 *
	 *     @type string $id     ID of the item.
	 *     @type string $title  Title of the node.
	 *     @type string $parent Optional. ID of the parent node.
	 *     @type string $href   Optional. Link for the item.
	 *     @type bool   $group  Optional. Whether or not the node is a group. Default false.
	 *     @type array  $meta   Meta data including the following keys: 'html', 'class', 'rel', 'lang', 'dir',
	 *                          'onclick', 'target', 'title', 'tabindex', 'menu_title'. Default empty.
	 * }
	 */
	public function add_node( $args ) {
		// Shim for old method signature: add_node( $parent_id, $menu_obj, $args ).
		if ( func_num_args() &gt;= 3 &amp;&amp; is_string( $args ) ) {
			$args = array_merge( array( 'parent' =&gt; $args ), func_get_arg( 2 ) );
		}

		if ( is_object( $args ) ) {
			$args = get_object_vars( $args );
		}

		// Ensure we have a valid title.
		if ( empty( $args['id'] ) ) {
			if ( empty( $args['title'] ) ) {
				return;
			}

			_doing_it_wrong( __METHOD__, __( 'The menu ID should not be empty.' ), '3.3.0' );
			// Deprecated: Generate an ID from the title.
			$args['id'] = esc_attr( sanitize_title( trim( $args['title'] ) ) );
		}

		$defaults = array(
			'id'     =&gt; false,
			'title'  =&gt; false,
			'parent' =&gt; false,
			'href'   =&gt; false,
			'group'  =&gt; false,
			'meta'   =&gt; array(),
		);

		// If the node already exists, keep any data that isn't provided.
		$maybe_defaults = $this-&gt;get_node( $args['id'] );
		if ( $maybe_defaults ) {
			$defaults = get_object_vars( $maybe_defaults );
		}

		// Do the same for 'meta' items.
		if ( ! empty( $defaults['meta'] ) &amp;&amp; ! empty( $args['meta'] ) ) {
			$args['meta'] = wp_parse_args( $args['meta'], $defaults['meta'] );
		}

		$args = wp_parse_args( $args, $defaults );

		$back_compat_parents = array(
			'my-account-with-avatar' =&gt; array( 'my-account', '3.3' ),
			'my-blogs'               =&gt; array( 'my-sites', '3.3' ),
		);

		if ( isset( $back_compat_parents[ $args['parent'] ] ) ) {
			list( $new_parent, $version ) = $back_compat_parents[ $args['parent'] ];
			_deprecated_argument( __METHOD__, $version, sprintf( 'Use &lt;code&gt;%s&lt;/code&gt; as the parent for the &lt;code&gt;%s&lt;/code&gt; admin bar node instead of &lt;code&gt;%s&lt;/code&gt;.', $new_parent, $args['id'], $args['parent'] ) );
			$args['parent'] = $new_parent;
		}

		$this-&gt;_set_node( $args );
	}

	/**
	 * @since 3.3.0
	 *
	 * @param array $args
	 */
	final protected function _set_node( $args ) {
		$this-&gt;nodes[ $args['id'] ] = (object) $args;
	}

	/**
	 * Gets a node.
	 *
	 * @since 3.3.0
	 *
	 * @param string $id
	 * @return object|void Node.
	 */
	final public function get_node( $id ) {
		$node = $this-&gt;_get_node( $id );
		if ( $node ) {
			return clone $node;
		}
	}

	/**
	 * @since 3.3.0
	 *
	 * @param string $id
	 * @return object|void
	 */
	final protected function _get_node( $id ) {
		if ( $this-&gt;bound ) {
			return;
		}

		if ( empty( $id ) ) {
			$id = 'root';
		}

		if ( isset( $this-&gt;nodes[ $id ] ) ) {
			return $this-&gt;nodes[ $id ];
		}
	}

	/**
	 * @since 3.3.0
	 *
	 * @return array|void
	 */
	final public function get_nodes() {
		$nodes = $this-&gt;_get_nodes();
		if ( ! $nodes ) {
			return;
		}

		foreach ( $nodes as &amp;$node ) {
			$node = clone $node;
		}
		return $nodes;
	}

	/**
	 * @since 3.3.0
	 *
	 * @return array|void
	 */
	final protected function _get_nodes() {
		if ( $this-&gt;bound ) {
			return;
		}

		return $this-&gt;nodes;
	}

	/**
	 * Adds a group to a toolbar menu node.
	 *
	 * Groups can be used to organize toolbar items into distinct sections of a toolbar menu.
	 *
	 * @since 3.3.0
	 *
	 * @param array $args {
	 *     Array of arguments for adding a group.
	 *
	 *     @type string $id     ID of the item.
	 *     @type string $parent Optional. ID of the parent node. Default 'root'.
	 *     @type array  $meta   Meta data for the group including the following keys:
	 *                         'class', 'onclick', 'target', and 'title'.
	 * }
	 */
	final public function add_group( $args ) {
		$args['group'] = true;

		$this-&gt;add_node( $args );
	}

	/**
	 * Remove a node.
	 *
	 * @since 3.1.0
	 *
	 * @param string $id The ID of the item.
	 */
	public function remove_node( $id ) {
		$this-&gt;_unset_node( $id );
	}

	/**
	 * @since 3.3.0
	 *
	 * @param string $id
	 */
	final protected function _unset_node( $id ) {
		unset( $this-&gt;nodes[ $id ] );
	}

	/**
	 * @since 3.1.0
	 */
	public function render() {
		$root = $this-&gt;_bind();
		if ( $root ) {
			$this-&gt;_render( $root );
		}
	}

	/**
	 * @since 3.3.0
	 *
	 * @return object|void
	 */
	final protected function _bind() {
		if ( $this-&gt;bound ) {
			return;
		}

		/*
		 * Add the root node.
		 * Clear it first, just in case. Don't mess with The Root.
		 */
		$this-&gt;remove_node( 'root' );
		$this-&gt;add_node(
			array(
				'id'    =&gt; 'root',
				'group' =&gt; false,
			)
		);

		// Normalize nodes: define internal 'children' and 'type' properties.
		foreach ( $this-&gt;_get_nodes() as $node ) {
			$node-&gt;children = array();
			$node-&gt;type     = ( $node-&gt;group ) ? 'group' : 'item';
			unset( $node-&gt;group );

			// The Root wants your orphans. No lonely items allowed.
			if ( ! $node-&gt;parent ) {
				$node-&gt;parent = 'root';
			}
		}

		foreach ( $this-&gt;_get_nodes() as $node ) {
			if ( 'root' === $node-&gt;id ) {
				continue;
			}

			// Fetch the parent node. If it isn't registered, ignore the node.
			$parent = $this-&gt;_get_node( $node-&gt;parent );
			if ( ! $parent ) {
				continue;
			}

			// Generate the group class (we distinguish between top level and other level groups).
			$group_class = ( 'root' === $node-&gt;parent ) ? 'ab-top-menu' : 'ab-submenu';

			if ( 'group' === $node-&gt;type ) {
				if ( empty( $node-&gt;meta['class'] ) ) {
					$node-&gt;meta['class'] = $group_class;
				} else {
					$node-&gt;meta['class'] .= ' ' . $group_class;
				}
			}

			// Items in items aren't allowed. Wrap nested items in 'default' groups.
			if ( 'item' === $parent-&gt;type &amp;&amp; 'item' === $node-&gt;type ) {
				$default_id = $parent-&gt;id . '-default';
				$default    = $this-&gt;_get_node( $default_id );

				/*
				 * The default group is added here to allow groups that are
				 * added before standard menu items to render first.
				 */
				if ( ! $default ) {
					/*
					 * Use _set_node because add_node can be overloaded.
					 * Make sure to specify default settings for all properties.
					 */
					$this-&gt;_set_node(
						array(
							'id'       =&gt; $default_id,
							'parent'   =&gt; $parent-&gt;id,
							'type'     =&gt; 'group',
							'children' =&gt; array(),
							'meta'     =&gt; array(
								'class' =&gt; $group_class,
							),
							'title'    =&gt; false,
							'href'     =&gt; false,
						)
					);
					$default            = $this-&gt;_get_node( $default_id );
					$parent-&gt;children[] = $default;
				}
				$parent = $default;

				/*
				 * Groups in groups aren't allowed. Add a special 'container' node.
				 * The container will invisibly wrap both groups.
				 */
			} elseif ( 'group' === $parent-&gt;type &amp;&amp; 'group' === $node-&gt;type ) {
				$container_id = $parent-&gt;id . '-container';
				$container    = $this-&gt;_get_node( $container_id );

				// We need to create a container for this group, life is sad.
				if ( ! $container ) {
					/*
					 * Use _set_node because add_node can be overloaded.
					 * Make sure to specify default settings for all properties.
					 */
					$this-&gt;_set_node(
						array(
							'id'       =&gt; $container_id,
							'type'     =&gt; 'container',
							'children' =&gt; array( $parent ),
							'parent'   =&gt; false,
							'title'    =&gt; false,
							'href'     =&gt; false,
							'meta'     =&gt; array(),
						)
					);

					$container = $this-&gt;_get_node( $container_id );

					// Link the container node if a grandparent node exists.
					$grandparent = $this-&gt;_get_node( $parent-&gt;parent );

					if ( $grandparent ) {
						$container-&gt;parent = $grandparent-&gt;id;

						$index = array_search( $parent, $grandparent-&gt;children, true );
						if ( false === $index ) {
							$grandparent-&gt;children[] = $container;
						} else {
							array_splice( $grandparent-&gt;children, $index, 1, array( $container ) );
						}
					}

					$parent-&gt;parent = $container-&gt;id;
				}

				$parent = $container;
			}

			// Update the parent ID (it might have changed).
			$node-&gt;parent = $parent-&gt;id;

			// Add the node to the tree.
			$parent-&gt;children[] = $node;
		}

		$root        = $this-&gt;_get_node( 'root' );
		$this-&gt;bound = true;
		return $root;
	}

	/**
	 * @since 3.3.0
	 *
	 * @param object $root
	 */
	final protected function _render( $root ) {
		/*
		 * Add browser classes.
		 * We have to do this here since admin bar shows on the front end.
		 */
		$class = 'nojq nojs';
		if ( wp_is_mobile() ) {
			$class .= ' mobile';
		}

		?&gt;
		&lt;div id=&quot;wpadminbar&quot; class=&quot;&lt;?php echo $class; ?&gt;&quot;&gt;
			&lt;?php if ( ! is_admin() &amp;&amp; ! did_action( 'wp_body_open' ) ) { ?&gt;
				&lt;a class=&quot;screen-reader-shortcut&quot; href=&quot;#wp-toolbar&quot; tabindex=&quot;1&quot;&gt;&lt;?php _e( 'Skip to toolbar' ); ?&gt;&lt;/a&gt;
			&lt;?php } ?&gt;
			&lt;div class=&quot;quicklinks&quot; id=&quot;wp-toolbar&quot; role=&quot;navigation&quot; aria-label=&quot;&lt;?php esc_attr_e( 'Toolbar' ); ?&gt;&quot;&gt;
				&lt;?php
				foreach ( $root-&gt;children as $group ) {
					$this-&gt;_render_group( $group );
				}
				?&gt;
			&lt;/div&gt;
		&lt;/div&gt;

		&lt;?php
	}

	/**
	 * @since 3.3.0
	 *
	 * @param object $node
	 */
	final protected function _render_container( $node ) {
		if ( 'container' !== $node-&gt;type || empty( $node-&gt;children ) ) {
			return;
		}

		echo '&lt;div id=&quot;' . esc_attr( 'wp-admin-bar-' . $node-&gt;id ) . '&quot; class=&quot;ab-group-container&quot;&gt;';
		foreach ( $node-&gt;children as $group ) {
			$this-&gt;_render_group( $group );
		}
		echo '&lt;/div&gt;';
	}

	/**
	 * @since 3.3.0
	 * @since 6.5.0 Added `$menu_title` parameter to allow an ARIA menu name.
	 *
	 * @param object $node
	 * @param string|bool $menu_title The accessible name of this ARIA menu or false if not provided.
	 */
	final protected function _render_group( $node, $menu_title = false ) {
		if ( 'container' === $node-&gt;type ) {
			$this-&gt;_render_container( $node );
			return;
		}
		if ( 'group' !== $node-&gt;type || empty( $node-&gt;children ) ) {
			return;
		}

		if ( ! empty( $node-&gt;meta['class'] ) ) {
			$class = ' class=&quot;' . esc_attr( trim( $node-&gt;meta['class'] ) ) . '&quot;';
		} else {
			$class = '';
		}

		if ( empty( $menu_title ) ) {
			echo &quot;&lt;ul role='menu' id='&quot; . esc_attr( 'wp-admin-bar-' . $node-&gt;id ) . &quot;'$class&gt;&quot;;
		} else {
			echo &quot;&lt;ul role='menu' aria-label='&quot; . esc_attr( $menu_title ) . &quot;' id='&quot; . esc_attr( 'wp-admin-bar-' . $node-&gt;id ) . &quot;'$class&gt;&quot;;
		}
		foreach ( $node-&gt;children as $item ) {
			$this-&gt;_render_item( $item );
		}
		echo '&lt;/ul&gt;';
	}

	/**
	 * @since 3.3.0
	 *
	 * @param object $node
	 */
	final protected function _render_item( $node ) {
		if ( 'item' !== $node-&gt;type ) {
			return;
		}

		$is_parent             = ! empty( $node-&gt;children );
		$has_link              = ! empty( $node-&gt;href );
		$is_root_top_item      = 'root-default' === $node-&gt;parent;
		$is_top_secondary_item = 'top-secondary' === $node-&gt;parent;

		// Allow only numeric values, then casted to integers, and allow a tabindex value of `0` for a11y.
		$tabindex         = ( isset( $node-&gt;meta['tabindex'] ) &amp;&amp; is_numeric( $node-&gt;meta['tabindex'] ) ) ? (int) $node-&gt;meta['tabindex'] : '';
		$aria_attributes  = ( '' !== $tabindex ) ? ' tabindex=&quot;' . $tabindex . '&quot;' : '';
		$aria_attributes .= ' role=&quot;menuitem&quot;';

		$menuclass = '';
		$arrow     = '';

		if ( $is_parent ) {
			$menuclass        = 'menupop ';
			$aria_attributes .= ' aria-expanded=&quot;false&quot;';
		}

		if ( ! empty( $node-&gt;meta['class'] ) ) {
			$menuclass .= $node-&gt;meta['class'];
		}

		// Print the arrow icon for the menu children with children.
		if ( ! $is_root_top_item &amp;&amp; ! $is_top_secondary_item &amp;&amp; $is_parent ) {
			$arrow = '&lt;span class=&quot;wp-admin-bar-arrow&quot; aria-hidden=&quot;true&quot;&gt;&lt;/span&gt;';
		}

		if ( $menuclass ) {
			$menuclass = ' class=&quot;' . esc_attr( trim( $menuclass ) ) . '&quot;';
		}

		echo &quot;&lt;li role='group' id='&quot; . esc_attr( 'wp-admin-bar-' . $node-&gt;id ) . &quot;'$menuclass&gt;&quot;;

		if ( $has_link ) {
			$attributes = array( 'onclick', 'target', 'title', 'rel', 'lang', 'dir' );
			echo &quot;&lt;a class='ab-item'$aria_attributes href='&quot; . esc_url( $node-&gt;href ) . &quot;'&quot;;
		} else {
			$attributes = array( 'onclick', 'target', 'title', 'rel', 'lang', 'dir' );
			echo '&lt;div class=&quot;ab-item ab-empty-item&quot;' . $aria_attributes;
		}

		foreach ( $attributes as $attribute ) {
			if ( empty( $node-&gt;meta[ $attribute ] ) ) {
				continue;
			}

			if ( 'onclick' === $attribute ) {
				echo &quot; $attribute='&quot; . esc_js( $node-&gt;meta[ $attribute ] ) . &quot;'&quot;;
			} else {
				echo &quot; $attribute='&quot; . esc_attr( $node-&gt;meta[ $attribute ] ) . &quot;'&quot;;
			}
		}

		echo &quot;&gt;{$arrow}{$node-&gt;title}&quot;;

		if ( $has_link ) {
			echo '&lt;/a&gt;';
		} else {
			echo '&lt;/div&gt;';
		}

		if ( $is_parent ) {
			echo '&lt;div class=&quot;ab-sub-wrapper&quot;&gt;';
			foreach ( $node-&gt;children as $group ) {
				if ( empty( $node-&gt;meta['menu_title'] ) ) {
					$this-&gt;_render_group( $group, false );
				} else {
					$this-&gt;_render_group( $group, $node-&gt;meta['menu_title'] );
				}
			}
			echo '&lt;/div&gt;';
		}

		if ( ! empty( $node-&gt;meta['html'] ) ) {
			echo $node-&gt;meta['html'];
		}

		echo '&lt;/li&gt;';
	}

	/**
	 * Renders toolbar items recursively.
	 *
	 * @since 3.1.0
	 * @deprecated 3.3.0 Use WP_Admin_Bar::_render_item() or WP_Admin_bar::render() instead.
	 * @see WP_Admin_Bar::_render_item()
	 * @see WP_Admin_Bar::render()
	 *
	 * @param string $id    Unused.
	 * @param object $node
	 */
	public function recursive_render( $id, $node ) {
		_deprecated_function( __METHOD__, '3.3.0', 'WP_Admin_bar::render(), WP_Admin_Bar::_render_item()' );
		$this-&gt;_render_item( $node );
	}

	/**
	 * Adds menus to the admin bar.
	 *
	 * @since 3.1.0
	 */
	public function add_menus() {
		// User-related, aligned right.
		add_action( 'admin_bar_menu', 'wp_admin_bar_my_account_menu', 0 );
		add_action( 'admin_bar_menu', 'wp_admin_bar_my_account_item', 9991 );
		add_action( 'admin_bar_menu', 'wp_admin_bar_recovery_mode_menu', 9992 );
		add_action( 'admin_bar_menu', 'wp_admin_bar_search_menu', 9999 );

		// Site-related.
		add_action( 'admin_bar_menu', 'wp_admin_bar_sidebar_toggle', 0 );
		add_action( 'admin_bar_menu', 'wp_admin_bar_wp_menu', 10 );
		add_action( 'admin_bar_menu', 'wp_admin_bar_my_sites_menu', 20 );
		add_action( 'admin_bar_menu', 'wp_admin_bar_site_menu', 30 );
		add_action( 'admin_bar_menu', 'wp_admin_bar_edit_site_menu', 40 );
		add_action( 'admin_bar_menu', 'wp_admin_bar_customize_menu', 40 );
		add_action( 'admin_bar_menu', 'wp_admin_bar_updates_menu', 50 );

		// Content-related.
		if ( ! is_network_admin() &amp;&amp; ! is_user_admin() ) {
			add_action( 'admin_bar_menu', 'wp_admin_bar_comments_menu', 60 );
			add_action( 'admin_bar_menu', 'wp_admin_bar_new_content_menu', 70 );
		}
		add_action( 'admin_bar_menu', 'wp_admin_bar_edit_menu', 80 );

		add_action( 'admin_bar_menu', 'wp_admin_bar_add_secondary_groups', 200 );

		/**
		 * Fires after menus are added to the menu bar.
		 *
		 * @since 3.1.0
		 */
		do_action( 'add_admin_bar_menus' );
	}
}
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