[Forminator] - Toggle PayPal button. Extend existing functionality of Forminator to include a conditional submit and PayPal button

wpmudev-forminator-paypal-submit-buttons.php

<?php
/**
* Plugin Name: [Forminator] - Add submit button to an existing form with PayPal button
* Plugin URI: https://premium.wpmudev.org/
* Description: Extend existing functionality of Forminator to include a conditional submit and PayPal button  (as of 1.9)
* Author: Alessandro Kaounas @ WPMUDEV
* Author URI: https://premium.wpmudev.org/
* License: GPLv2 or later
*/
​
if ( ! defined( 'ABSPATH' ) ) {
	exit;
}
​
if ( ! class_exists( 'WPMUDEV_Forminator_PayPal_Submit_Buttons' ) ) {
    
    class WPMUDEV_Forminator_PayPal_Submit_Buttons {
​
        private $module_id = 1135;
        
        private $checkbox = 'checkbox-1';
​
        private static $_instance = null;
​
        public static function get_instance() {
​
            if( is_null( self::$_instance ) ){
                self::$_instance = new WPMUDEV_Forminator_PayPal_Submit_Buttons();
            }
            return self::$_instance;
            
        }
​
        private function __construct() {
​
            $this->init();
​
        }
​
        private function init(){
​
            add_filter( 'forminator_render_form_markup', array( $this, 'wpmudev_add_submit_button' ), 10, 6 );
            add_action( 'wp_enqueue_scripts', array( $this, 'wpmudev_theme_prefix_enqueue_script' ) );
​
        }
​
        public function wpmudev_add_submit_button( $html, $form_fields, $form_type, $form_settings, $form_design, $render_id ){
​
            if( $form_settings['form_id'] != $this->module_id ) return $html;
​
            $submit = '<div class="forminator-row"><div class="forminator-col"><div id="submit" class="forminator-field"><button class="forminator-button forminator-button-submit">Send Message</button></div></div></div>';
            $html = str_replace( '</form>', $submit . '</form>', $html );
        
            return $html;
​
        }
​
        public function wpmudev_theme_prefix_enqueue_script() {
​
            if ( ! wp_script_is( 'jquery', 'done' ) ) {
                wp_enqueue_script( 'jquery' );
            }
​
            wp_add_inline_script( 'jquery', "
            jQuery(document).ready(function($){
​
                // Module setup
                var form = $('#forminator-module-' + {$this->module_id});
                var checkbox = form.find('.forminator-row .forminator-field input[name=\"{$this->checkbox}[]\"]');
                
                // Initial values
                var st_button = form.find('.forminator-row .forminator-field .forminator-button-submit');
                
                // If submit button missing, return
                if(!st_button.length) return;
​
                var pp_button = form.find('.forminator-button-paypal').closest('.forminator-row');
                var btn_status = checkbox.is(':checked');
​
                // On load
                forminator_{$this->module_id}_toggle_buttons(btn_status, pp_button, st_button);
            
                // Event listener on change
                checkbox.on('change', function(){
                    var pp_status = $(this).is(':checked');
                    forminator_{$this->module_id}_toggle_buttons(pp_status, pp_button, st_button);
                });
            
                // Function to handle show/hide
                function forminator_{$this->module_id}_toggle_buttons(status, btn_p, btn_s){
                    if(status){
                        btn_p.show();
                        btn_s.hide();
                    }else{
                        btn_p.hide();
                        btn_s.show();
                    }
                    return;
                }
            
            });" );
​
        }
​
	}
	
    if ( ! function_exists( 'WPMUDEV_Forminator_PayPal_Submit_Buttons' ) ) {
        
        function WPMUDEV_Forminator_PayPal_Submit_Buttons() {
            return WPMUDEV_Forminator_PayPal_Submit_Buttons::get_instance();
        };
​
        add_action( 'plugins_loaded', 'WPMUDEV_Forminator_PayPal_Submit_Buttons', 99 );
​
    }
​
}