WordPress Contact Form 7 - Editor Shortcut

<?php

#   Allow a quicker means of editing the page's Contact Form 7 entry.
if(defined('WPCF7_VERSION')){

    add_action('admin_bar_menu', function($menu){
        global $post, $wpdb, $current_screen;


        #   In admin panel: check if we're editing an existing CF7 entry.
        if(is_admin() && @('toplevel_page_wpcf7' === $GLOBALS['current_screen']->id)){

            if($page = $wpdb->get_row($wpdb->prepare('SELECT * FROM '.$wpdb->posts.' WHERE (post_type = \'page\' OR post_type = \'post\') AND post_content LIKE \'%%[contact-form-7 id="%d"%%\'', $_GET['post']))){
                $type   =   get_post_type_object($page->post_type);

                $menu->add_node(array(
                    'id'    =>  'edit-wpcf7-page',
                    'title' =>  $type->labels->edit_item,
                    'href'  =>  get_edit_post_link($page->ID),
                    'meta'  =>  array('class' => 'ab-icon-edit', 'title' => 'Edit the page using this contact form')
                ));
            }
            return;
        }


        #   Sanity check: bail if there's no $post global available.
        if(!$post) return;


        #   Post's content contains at least one CF7 shortcode; parse it and grab its ID.
        if(preg_match('#\[contact-form-7[^\]]+id="(\d+)"[^\]]*\]#', $post->post_content, $matches)){
            $id =   $matches[1];

            $menu->add_node(array(
                'id'    =>  'edit-wpcf7',
                'title' =>  'Contact Form',
                'href'  =>  admin_url('admin.php?page=wpcf7&post=' . $id . '&action=edit'),
                'meta'  =>  array('class' => 'ab-icon-email')
            ));
        }
    }, 90);


    #   DOM juice for adding icons to inserted admin-bar links.
    add_action('wp_after_admin_bar_render', function(){
        ?>
        <style type="text/css">.ab-icon-email > a::before{content: "\F466"; top: 2px;}.ab-icon-edit > a::before{content:"\F464"; top: 2px;}</style>
        <?php
    });
}