Stops the Nextgen Gallery scripts from being loaded on pages without a gallery

ngg-script-optimizer

<?php
/**
 *
 * @wordpress-plugin
 * Plugin Name:       NextGen Gallery Script Optimizer
 * Plugin URI:        http://chooserethink.com
 * Description:       Removes NextGen Gallery scripts on pages that don't have a gallery on it.
 * Version:           1.0.0
 * Author:            Brianna Deleasa @ re:think
 * Author URI:        http://chooserethink.com
 * License:           GPL-2.0+
 * License URI:       http://www.gnu.org/licenses/gpl-2.0.txt
 * Text Domain:       ngg-script-optimizer
 * Domain Path:       /languages
 */

// If this file is called directly, abort.
if ( ! defined( 'WPINC' ) ) {
    die;
}

add_action( 'wp_enqueue_scripts', 'ngg_script_optimizer_remove_nextgen_gallery_scripts_styles', 99999);
/**
 * Dequeues NextGen Gallery scripts that aren't needed.
 *
 * @param none
 * @return none
 *
 * @since 1.0.0
 */
function ngg_script_optimizer_remove_nextgen_gallery_scripts_styles() {

    global $post;

    // Get out now if the current post has a gallery.
    if ( strpos($post->post_content, 'ngg_displayed_gallery') !== false ) {
        return;
    }

    $nextgen_gallery_scripts = array(
        'ngg_lightbox_context',
        'fancybox-0',
        'fancybox-1',
        'fancybox-2'
    );

    foreach($nextgen_gallery_scripts as $script) {
        wp_dequeue_script($script);
    }

    $nextgen_gallery_styles = array(
        'fancybox-0'
    );

    foreach($nextgen_gallery_styles as $style) {
        wp_dequeue_style($style);
    }

}