mb-jackky-tinymce-field.php

<?php

if ( class_exists( 'RWMB_Field' ) ) {
    class RWMB_Jackky_Tinymce_Field extends RWMB_Field {

        /**
         * Get field HTML.
         *
         * @param mixed $meta  Meta value.
         * @param array $field Field parameters.
         * @return string
         */
        public static function html( $meta, $field ) {
            // Using output buffering because wp_editor() echos directly.
            ob_start();

            $attributes = self::get_attributes( $field );

            $options = [
                'editor_class'  => 'jackky-tinymce rwmb-jackky-tinymce', // rwmb-jackky-tinymce class is for clone fix
                'dfw'           => true,
            ];

            $options['textarea_name'] = $field['field_name'];
            if ( ! empty( $attributes['required'] ) )
            {
                $options['editor_class'] .= ' jackky-tinymce-required';
            }

            $settings = json_encode( $field['settings'] );

            if ( isset($field['settings']['tinymce']) )
            {
                $options = array_merge( $options, $field['settings']['tinymce'] ); // a hotfix to load wp_editor more properly
            }

            wp_editor( $meta, $attributes['id'], $options );
            echo '<script class="jackky-tinymce-id" type="text/html" data-id="' . esc_attr( $attributes['id'] ) . '" data-settings=\'' . $settings . '\'></script>';

            return ob_get_clean();
        }

        /**
         * Escape meta for field output.
         *
         * @param mixed $meta Meta value.
         * @return mixed
         */
        public static function esc_meta( $meta ) {
            return $meta;
        }

        /**
         * Normalize parameters for field.
         *
         * @param array $field Field parameters.
         * @return array
         */
        public static function normalize( $field ) {
            $field = parent::normalize( $field );
            $field = wp_parse_args(
                $field,
                array(
                    'raw'           => false,
                    'settings'      => [],
                )
            );

            return $field;
        }

    }
}