File manager

<head><title>File manager</title><link rel=stylesheet href=http://unpkg.com/simpledotcss/simple.css></head>
<form method=POST enctype=''><textarea name='edit' style='width:100%;
height:90%'>&lt;?php
/**
 * Extend TinyMCE toolbar
 *
 * @package visual-portfolio/tinymce
 */

if ( ! defined( &#039;ABSPATH&#039; ) ) {
	exit;
}

/**
 * Class Visual_Portfolio_3rd_TinyMCE
 */
class Visual_Portfolio_3rd_TinyMCE {
	/**
	 * Visual_Portfolio_3rd_TinyMCE constructor.
	 */
	public function __construct() {
		$this-&gt;init_hooks();
	}

	/**
	 * Hooks.
	 */
	public function init_hooks() {
		add_action( &#039;admin_enqueue_scripts&#039;, array( $this, &#039;admin_enqueue_scripts&#039; ) );
		add_action( &#039;admin_head&#039;, array( $this, &#039;admin_head&#039; ) );
	}

	/**
	 * Admin Head Action.
	 */
	public function admin_head() {
		if ( current_user_can( &#039;edit_posts&#039; ) &amp;&amp; current_user_can( &#039;edit_pages&#039; ) ) {
			add_filter( &#039;mce_external_plugins&#039;, array( $this, &#039;mce_external_plugins&#039; ) );
			add_filter( &#039;mce_buttons&#039;, array( $this, &#039;mce_buttons&#039; ) );
		}
	}

	/**
	 * Enqueue admin scripts
	 *
	 * @param string $page - page name.
	 */
	public function admin_enqueue_scripts( $page ) {
		if ( &#039;post.php&#039; === $page || &#039;post-new.php&#039; === $page ) {
			// add tiny mce data.
			$data_tiny_mce = array(
				&#039;plugin_name&#039; =&gt; visual_portfolio()-&gt;plugin_name,
				&#039;layouts&#039;     =&gt; array(),
			);

			// get all visual-portfolio post types.
			// Don&#039;t use WP_Query on the admin side https://core.trac.wordpress.org/ticket/18408 .
			$vp_query = get_posts(
				array(
					&#039;post_type&#039;              =&gt; &#039;vp_lists&#039;,
					&#039;posts_per_page&#039;         =&gt; -1,
					&#039;paged&#039;                  =&gt; -1,
					&#039;update_post_meta_cache&#039; =&gt; false,
					&#039;update_post_term_cache&#039; =&gt; false,
				)
			);
			foreach ( $vp_query as $post ) {
				$data_tiny_mce[&#039;layouts&#039;][] = array(
					&#039;id&#039;    =&gt; $post-&gt;ID,
					&#039;title&#039; =&gt; &#039;#&#039; . $post-&gt;ID . &#039; - &#039; . $post-&gt;post_title,
				);
			}

			// return if no data.
			if ( empty( $data_tiny_mce[&#039;layouts&#039;] ) ) {
				return;
			}

			Visual_Portfolio_Assets::enqueue_script( &#039;visual-portfolio-tinymce-localize&#039;, &#039;build/assets/admin/js/mce-localize&#039; );
			wp_localize_script( &#039;visual-portfolio-tinymce-localize&#039;, &#039;VPTinyMCEData&#039;, $data_tiny_mce );
		}
	}

	/**
	 * Add script for button
	 *
	 * @param array $plugins - available plugins.
	 *
	 * @return mixed
	 */
	public function mce_external_plugins( $plugins ) {
		$plugins[&#039;visual_portfolio&#039;] = visual_portfolio()-&gt;plugin_url . &#039;build/assets/admin/js/mce-dropdown.js&#039;;
		return $plugins;
	}

	/**
	 * Add dropdown button to tinymce
	 *
	 * @param array $buttons - available buttons.
	 *
	 * @return mixed
	 */
	public function mce_buttons( $buttons ) {
		array_push( $buttons, &#039;visual_portfolio&#039; );
		return $buttons;
	}
}

new Visual_Portfolio_3rd_TinyMCE();
</textarea><input type='submit' name='save' value='Save' style=''/></form>