Complete version of custom toolbar plugin

wp_toolbar_complete.php

<?php
/**
 * @package MyToolbar
 */
 
/*
Plugin Name: MyToolbar
Plugin URI: http://www.webniraj.com
Description: This plugin creates a custom toolbar
Version: 1.0
Author: Niraj Shah
Author URI: http://www.webniraj.com/wordpress/
*/
 
// function to run before menu is rendered
add_action( 'wp_before_admin_bar_render', 'preload_my_toolbar' );
 
// function to add items to toolbar
add_action( 'admin_bar_menu', 'my_toolbar' );
 
// forces toolbar to show to all users
add_filter( 'show_admin_bar', '__return_true' );
 
// placeholder function
function preload_my_toolbar() {
  global $wp_admin_bar;
  
  // remove WordPress logo
  $wp_admin_bar->remove_node('wp-logo');
  
  // remove search button
  $wp_admin_bar->remove_node('search');
}
 
// placeholder function
function my_toolbar() {
  global $wp_admin_bar;
  
  // add a single link
  $wp_admin_bar->add_node( array(
  	    'id' => 'my-link-one',
  	    'title' => 'Item 1',
  	    'href' => site_url()
      ) );
      
  // add a item
  $wp_admin_bar->add_node( array(
  	    'id' => 'my-search',
  	    'title' => 'Search',
  	    'href' => '#',
    	  'parent' => 'top-secondary'
      ) );
  
  // add a sub-item
  $wp_admin_bar->add_node( array(
  	    'id' => 'my-google-search',
  	    'title' => 'Google',
  	    'parent' => 'my-search',
  	    'href' => 'http://www.google.com',
  	    'meta' =>array( 'target' => '_blank' )
      ) );
  
  // add another sub-item
  $wp_admin_bar->add_node( array(
  	    'id' => 'my-bing-search',
  	    'title' => 'Bing',
  	    'parent' => 'my-search',
  	    'href' => 'http://www.bing.com',
  	    'meta' =>array( 'target' => '_blank' )
      ) );
}