array(
				'parent' => 'appearance',
				'id'     => 'themes',
				'title'  => __( 'Themes' ),
				'href'   => admin_url( 'themes.php' ),
			)
		);
	}

	if ( ! current_user_can( 'edit_theme_options' ) ) {
		return;
	}

	if ( current_theme_supports( 'widgets' ) ) {
		$wp_admin_bar->add_node(
			array(
				'parent' => 'appearance',
				'id'     => 'widgets',
				'title'  => __( 'Widgets' ),
				'href'   => admin_url( 'widgets.php' ),
			)
		);
	}

	if ( current_theme_supports( 'menus' ) || current_theme_supports( 'widgets' ) ) {
		$wp_admin_bar->add_node(
			array(
				'parent' => 'appearance',
				'id'     => 'menus',
				'title'  => __( 'Menus' ),
				'href'   => admin_url( 'nav-menus.php' ),
			)
		);
	}

	if ( current_theme_supports( 'custom-background' ) ) {
		$wp_admin_bar->add_node(
			array(
				'parent' => 'appearance',
				'id'     => 'background',
				'title'  => _x( 'Background', 'custom background' ),
				'href'   => admin_url( 'themes.php?page=custom-background' ),
				'meta'   => array(
					'class' => 'hide-if-customize',
				),
			)
		);
	}

	if ( current_theme_supports( 'custom-header' ) ) {
		$wp_admin_bar->add_node(
			array(
				'parent' => 'appearance',
				'id'     => 'header',
				'title'  => _x( 'Header', 'custom image header' ),
				'href'   => admin_url( 'themes.php?page=custom-header' ),
				'meta'   => array(
					'class' => 'hide-if-customize',
				),
			)
		);
	}
}

/**
 * Provides an update link if theme/plugin/core updates are available.
 *
 * @since 3.1.0
 *
 * @param WP_Admin_Bar $wp_admin_bar The WP_Admin_Bar instance.
 */
function wp_admin_bar_updates_menu( $wp_admin_bar ) {

	$update_data = wp_get_update_data();

	if ( ! $update_data['counts']['total'] ) {
		return;
	}

	$updates_text = sprintf(
		/* translators: Hidden accessibility text. %s: Total number of updates available. */
		_n( '%s update available', '%s updates available', $update_data['counts']['total'] ),
		number_format_i18n( $update_data['counts']['total'] )
	);

	$icon   = '<span class="ab-icon" aria-hidden="true"></span>';
	$title  = '<span class="ab-label" aria-hidden="true">' . number_format_i18n( $update_data['counts']['total'] ) . '</span>';
	$title .= '<span class="screen-reader-text updates-available-text">' . $updates_text . '</span>';

	$wp_admin_bar->add_node(
		array(
			'id'    => 'updates',
			'title' => $icon . $title,
			'href'  => network_admin_url( 'update-core.php' ),
		)
	);
}

/**
 * Adds search form.
 *
 * @since 3.3.0
 *
 * @param WP_Admin_Bar $wp_admin_bar The WP_Admin_Bar instance.
 */
function wp_admin_bar_search_menu( $wp_admin_bar ) {
	if ( is_admin() ) {
		return;
	}

	$form  = '<form action="' . esc_url( home_url( '/' ) ) . '" method="get" id="adminbarsearch">';
	$form .= '<input class="adminbar-input" name="s" id="adminbar-search" type="text" value="" maxlength="150" />';
	$form .= '<label for="adminbar-search" class="screen-reader-text">' .
			/* translators: Hidden accessibility text. */
			__( 'Search' ) .
		'</label>';
	$form .= '<input type="submit" class="adminbar-button" value="' . __( 'Search' ) . '" />';
	$form .= '</form>';

	$wp_admin_bar->add_node(
		array(
			'parent' => 'top-secondary',
			'id'     => 'search',
			'title'  => $form,
			'meta'   => array(
				'class'    => 'admin-bar-search',
				'tabindex' => -1,
			),
		)
	);
}

/**
 * Adds a link to exit recovery mode when Recovery Mode is active.
 *
 * @since 5.2.0
 *
 * @param WP_Admin_Bar $wp_admin_bar The WP_Admin_Bar instance.
 */
function wp_admin_bar_recovery_mode_menu( $wp_admin_bar ) {
	if ( ! wp_is_recovery_mode() ) {
		return;
	}

	$url = wp_login_url();
	$url = add_query_arg( 'action', WP_Recovery_Mode::EXIT_ACTION, $url );
	$url = wp_nonce_url( $url, WP_Recovery_Mode::EXIT_ACTION );

	$wp_admin_bar->add_node(
		array(
			'parent' => 'top-secondary',
			'id'     => 'recovery-mode',
			'title'  => __( 'Exit Recovery Mode' ),
			'href'   => $url,
		)
	);
}

/**
 * Adds secondary menus.
 *
 * @since 3.3.0
 *
 * @param WP_Admin_Bar $wp_admin_bar The WP_Admin_Bar instance.
 */
function wp_admin_bar_add_secondary_groups( $wp_admin_bar ) {
	$wp_admin_bar->add_group(
		array(
			'id'   => 'top-secondary',
			'meta' => array(
				'class' => 'ab-top-secondary',
			),
		)
	);

	$wp_admin_bar->add_group(
		array(
			'parent' => 'wp-logo',
			'id'     => 'wp-logo-external',
			'meta'   => array(
				'class' => 'ab-sub-secondary',
			),
		)
	);
}

/**
 * Enqueues inline style to hide the admin bar when printing.
 *
 * @since 6.4.0
 */
function wp_enqueue_admin_bar_header_styles() {
	// Back-compat for plugins that disable functionality by unhooking this action.
	$action = is_admin() ? 'admin_head' : 'wp_head';
	if ( ! has_action( $action, 'wp_admin_bar_header' ) ) {
		return;
	}
	remove_action( $action, 'wp_admin_bar_header' );

	wp_add_inline_style( 'admin-bar', '@media print { #wpadminbar { display:none; } }' );
}

/**
 * Enqueues inline bump styles to make room for the admin bar.
 *
 * @since 6.4.0
 */
function wp_enqueue_admin_bar_bump_styles() {
	if ( current_theme_supports( 'admin-bar' ) ) {
		$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';
	}

	if ( '_admin_bar_bump_cb' !== $header_callback ) {
		return;
	}

	// Back-compat for plugins that disable functionality by unhooking this action.
	if ( ! has_action( 'wp_head', $header_callback ) ) {
		return;
	}
	remove_action( 'wp_head', $header_callback );

	$css = '
		@media screen { html { margin-top: 32px !important; } }
		@media screen and ( max-width: 782px ) { html { margin-top: 46px !important; } }
	';
	wp_add_inline_style( 'admin-bar', $css );
}

/**
 * Sets the display status of the admin bar.
 *
 * This can be called immediately upon plugin load. It does not need to be called
 * from a function hooked to the {@see 'init'} action.
 *
 * @since 3.1.0
 *
 * @global bool $show_admin_bar
 *
 * @param bool $show Whether to allow the admin bar to show.
 */
function show_admin_bar( $show ) {
	global $show_admin_bar;
	$show_admin_bar = (bool) $show;
}

/**
 * Determines whether the admin bar should be showing.
 *
 * For more information on this and similar theme functions, check out
 * the {@link https://developer.wordpress.org/themes/basics/conditional-tags/
 * Conditional Tags} article in the Theme Developer Handbook.
 *
 * @since 3.1.0
 *
 * @global bool   $show_admin_bar
 * @global string $pagenow        The filename of the current screen.
 *
 * @return bool Whether the admin bar should be showing.
 */
function is_admin_bar_showing() {
	global $show_admin_bar, $pagenow;

	// For all these types of requests, we never want an admin bar.
	if ( defined( 'XMLRPC_REQUEST' ) || defined( 'DOING_AJAX' ) || defined( 'IFRAME_REQUEST' ) || wp_is_json_request() ) {
		return false;
	}

	if ( is_embed() ) {
		return false;
	}

	// Integrated into the admin.
	if ( is_admin() ) {
		return true;
	}

	if ( ! isset( $show_admin_bar ) ) {
		if ( ! is_user_logged_in() || 'wp-login.php' === $pagenow ) {
			$show_admin_bar = false;
		} else {
			$show_admin_bar = _get_admin_bar_pref();
		}
	}

	/**
	 * Filters whether to show the admin bar.
	 *
	 * Returning false to this hook is the recommended way to hide the admin bar.
	 * The user's display preference is used for logged in users.
	 *
	 * @since 3.1.0
	 *
	 * @param bool $show_admin_bar Whether the admin bar should be shown. Default false.
	 */
	$show_admin_bar = apply_filters( 'show_admin_bar', $show_admin_bar );

	return $show_admin_bar;
}

/**
 * Retrieves the admin bar display preference of a user.
 *
 * @since 3.1.0
 * @access private
 *
 * @param string $context Context of this preference check. Defaults to 'front'. The 'admin'
 *                        preference is no longer used.
 * @param int    $user    Optional. ID of the user to check, defaults to 0 for current user.
 * @return bool Whether the admin bar should be showing for this user.
 */
function _get_admin_bar_pref( $context = 'front', $user = 0 ) {
	$pref = get_user_option( "show_admin_bar_{$context}", $user );
	if ( false === $pref ) {
		return true;
	}

	return 'true' === $pref;
}