/**
 * Adds a "My Page" link to the Toolbar.
 *
 * @param WP_Admin_Bar $wp_admin_bar Toolbar instance.
 */
function toolbar_link_to_mypage( $wp_admin_bar ) {
	$args = array(
		'id'    => 'my_page',
		'title' => __( 'My Page', 'textdomain' ),
		'href'  => 'http://mysite.com/my-page/',
		'meta'  => array(
			'class' => 'my-toolbar-page'
		)
	);
	$wp_admin_bar->add_node( $args );
}
add_action( 'admin_bar_menu', 'toolbar_link_to_mypage', 999 );

/**
 * Adds sorted social media links to the Toolbar.
 *
 * @param WP_Admin_Bar $wp_admin_bar Toolbar instance.
 */
function social_media_links( $wp_admin_bar ) {

	$args = array(
		'id'    => 'social_media',
		'title' => 'Social Media',
		'meta'  => array(
			'class' => 'first-toolbar-group'
		),
	);
	$wp_admin_bar->add_node( $args );	

	$args = array();

	array_push( $args,array(
		'id'     => 'twitter',
		'title'  => __( 'Twitter', 'textdomain' ),
		'href'   => 'http://www.twitter.com',
		'parent' => 'social_media',
	) );
	
	array_push( $args,array(
		'id'     => 'youtube',
		'title'  => __( 'YouTube', 'textdomain' ),
		'href'   => 'http://www.YouTube.com',
		'parent' => 'social_media',
		'meta'   => array(
			'class' => 'first-toolbar-group'
		),
	) );

	array_push( $args,array(
		'id'     => 'fb',
		'title'  => __( 'Facebook', 'textdomain' ),
		'href'   => 'http://www.facebook.com',
		'parent' => 'social_media',
	) );
	
	sort( $args );

	for ( $a=0; $a < sizeOf( $args ); $a++ ) {
		$wp_admin_bar->add_node( $args[ $a ] );
	}
} 

add_action('wp_before_admin_bar_render', 'baw_admin_bar_render', 100);

/**
 * Adds admin bar items for easy access to the theme creator and editor
 */
function baw_admin_bar_render() {
    baw_admin_bar_render_item( 'BAW' ); // Parent item
    baw_admin_bar_render_item('BAW Sub1', 'some_link_to_the_settings', 'BAW');
    baw_admin_bar_render_item('BAW Sub2', 'some_link_to_the_settings', 'BAW');
}

/**
 * Adds menu parent or submenu item.
 *
 * @param string $name        The menu item label.
 * @param string $href        Optional. The link to the item (settings page or ext site). Default empty.
 * @param string $parent      Optional. Parent label (if creating a submenu item). Default empty.
 * @param array  $custom_meta Optional. Custom meta to include for the rendered item. Default empty array.
 *
 * @global WP_Admin_Bar $wp_admin_bar Toolbar instance.
 */
function baw_admin_bar_render_item( $name, $href = '', $parent = '', $custom_meta = array() ) {
    global $wp_admin_bar;

	if ( ! is_super_admin()
		 || ! is_object( $wp_admin_bar ) 
		 || ! function_exists( 'is_admin_bar_showing' ) 
		 || ! is_admin_bar_showing()
	 ) {
		return;
	}

    // Generate ID based on the current filename and the name supplied.
    $id = sanitize_key( basename( __FILE__, '.php' ) . '-' . $name );

    // Generate the ID of the parent.
    $parent = sanitize_key( basename( __FILE__, '.php' ) . '-' . $parent );

    // Links from the current host will open in the current window

    $meta = strpos( $href, site_url() ) !== false ? array() : array( 'target' => '_blank' ); // external links open in new tab/window
    $meta = array_merge( $meta, $custom_meta );

    $wp_admin_bar->add_node( array(
        'parent' => $parent,
        'id'     => $id,
        'title'  => $name,
        'href'   => $href,
        'meta'   => $meta,
    ) );
}