[Hustle] - Add form support to pop-up main content

wpmudev-hustle-form-elements.php

<?php
/**
* Plugin Name: [Hustle] - Add form support to pop-up main content
* Plugin URI: https://premium.wpmudev.org/
* Description: Extend existing functionality of Hustle to allow form elements in main content (as of 4.0.2)
* Author: Alessandro Kaounas @ WPMUDEV
* Author URI: https://premium.wpmudev.org/
* License: GPLv2 or later
*/

if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

if ( ! class_exists( 'WPMUDEV_Hustle_Form_Elements' ) ) {
    
    class WPMUDEV_Hustle_Form_Elements {

        private static $_instance = null;

        public static function get_instance() {

            if( is_null( self::$_instance ) ){
                self::$_instance = new WPMUDEV_Hustle_Form_Elements();
            }
            return self::$_instance;
            
        }

        private function __construct() {

            $this->init();

        }

        private function init(){
            
            add_filter( 'hustle_module_main_content_allowed_html', array( $this, 'wpmudev_hustle_module_main_content_allowed_html' ), 10, 2 );

        }

        public function wpmudev_hustle_module_main_content_allowed_html( $html, $module ) {

            $html['form'] = array(
                'id'	   		 => array(),
                'action'   		 => array(),
                'method'   		 => array(),
                'accept-charset' => array(),
            );

            return $html;

        }


	}
	
    if ( ! function_exists( 'WPMUDEV_Hustle_Form_Elements' ) ) {
        
        function WPMUDEV_Hustle_Form_Elements() {
            return WPMUDEV_Hustle_Form_Elements::get_instance();
        };

        add_action( 'plugins_loaded', 'WPMUDEV_Hustle_Form_Elements', 99 );

    }

}