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<?php
/**
* LearnDash Course Builder Metabox Base.
*
* @since 2.6.0
* @package LearnDash\Builder
*/
use LearnDash\Core\Utilities\Cast;
if ( ! defined( 'ABSPATH' ) ) {
exit;
}
if ( ! class_exists( 'Learndash_Admin_Builder' ) ) {
/**
* Class LearnDash Course Builder Metabox Base.
*
* @since 2.6.0
*/
class Learndash_Admin_Builder {
/**
* Builder post type
*
* @var string
*/
protected $builder_post_type;
/**
* Builder post ID
*
* @var int
*/
protected $builder_post_id;
/**
* Builder prefix
*
* @var string
*/
protected $builder_prefix = 'learndash_builder';
/**
* Builder assets
*
* @var array
*/
protected $builder_assets = array();
/**
* Array of post types
*
* @var array
*/
protected $selector_post_types = array();
/**
* Static array of section instances.
*
* @var array
*/
protected static $_instances = array(); // phpcs:ignore PSR2.Classes.PropertyDeclaration.Underscore
/**
* LearnDash course steps object.
*
* @var object|null
*/
public $ld_course_steps_object;
/**
* Static object instance.
*
* @var object
*/
public static $instance;
/**
* Public constructor for class
*
* @since 2.6.0
*/
public function __construct() {
if ( ! isset( $this->builder_assets[ $this->builder_post_type ] ) ) {
$this->builder_assets[ $this->builder_post_type ] = array(
'post_data' => array(),
'messages' => array(),
);
}
add_action( 'admin_footer', array( $this, 'builder_admin_footer' ), 1 );
}
/**
* Add instance to static tracking array
*
* @since 2.6.0
*
* @return object|null instance object or null.
*/
final public static function add_instance() {
$called_class = get_called_class();
if ( is_subclass_of( $called_class, __CLASS__ ) ) { // @phpstan-ignore-line
if ( ! isset( self::$_instances[ $called_class ] ) ) {
self::$_instances[ $called_class ] = new $called_class();
if ( is_a( self::$_instances[ $called_class ], $called_class ) ) {
return self::$_instances[ $called_class ];
}
} else {
return self::$_instances[ $called_class ];
}
}
return null;
}
/**
* Get the current instance of this class or new.
*
* @since 2.6.0
*
* @param string $called_class Class for instance.
*
* @return object|null instance of class or null.
*/
final public static function get_instance( $called_class = '' ) {
if ( ! empty( $called_class ) ) {
if ( isset( self::$_instances[ $called_class ] ) ) {
return self::$_instances[ $called_class ];
} else {
self::add_instance();
if ( ( array_key_exists( $called_class, self::$_instances ) ) && ( is_a( self::$_instances[ $called_class ], $called_class ) ) ) {
return self::$_instances[ $called_class ];
}
}
} else {
if ( null === self::$instance ) {
self::$instance = new self();
}
return self::$instance;
}
return null;
}
/**
* Call via the WordPress load sequence for admin pages.
*
* @since 2.6.0
*/
public function builder_on_load() {
}
/**
* Get the number of current items in the builder.
*
* @since 2.6.0
*/
public function get_build_items_count() {
}
/**
* Get the selected items for a post type.
*
* @since 2.6.0
*
* @param string $selector_post_type Post Type is selector being processed.
*/
public function get_selector_selected_steps( $selector_post_type = '' ) {
}
/** Utility function to build the selector query args array.
*
* @since 2.5.0
*
* @param array $args Array of query args.
*/
public function build_selector_query( $args = array() ) {
}
/**
* Show selector single row.
*
* @since 2.5.0
*
* @param object $p WP_Post object to show.
* @param string $selector_post_type Post type slug.
*/
protected function build_selector_row_single( $p = null, $selector_post_type = '' ) {
}
/**
* Build course steps HTML.
*
* @since 2.5.0
*
* @param array $steps Array of current course steps.
* @param string $steps_parent_type Parent post type slug. Default is 'sfwd-courses'.
*/
protected function process_course_steps( $steps = array(), $steps_parent_type = 'sfwd-courses' ) {
}
/**
* Call via the WordPress admin_footer action hook.
*
* @since 2.6.0
*/
public function builder_admin_footer() {
global $post;
wp_enqueue_style(
'learndash-new-builder-style',
LEARNDASH_LMS_PLUGIN_URL . 'assets/js/builder/dist/builder' . learndash_min_builder_asset() . '.css',
array( 'wp-editor' ),
LEARNDASH_SCRIPT_VERSION_TOKEN
);
wp_style_add_data( 'learndash-new-builder-style', 'rtl', 'replace' );
wp_enqueue_script(
'learndash-new-builder-script',
LEARNDASH_LMS_PLUGIN_URL . 'assets/js/builder/dist/builder' . learndash_min_builder_asset() . '.js',
array( 'wp-i18n', 'learndash-new-header-script', 'wp-data' ),
LEARNDASH_SCRIPT_VERSION_TOKEN,
true
);
// Make sure some metaboxes can't be toggled off.
wp_enqueue_script(
'learndash-force-metaboxes',
LEARNDASH_LMS_PLUGIN_URL . 'assets/js/builder/dist/metaboxes' . learndash_min_builder_asset() . '.js',
array( 'wp-data', 'jquery' ),
LEARNDASH_SCRIPT_VERSION_TOKEN,
true
);
$metaboxes = [
'wp_version' => learndash_sanitize_version_string(
Cast::to_string( get_bloginfo( 'version' ) )
),
];
if ( ( function_exists( 'use_block_editor_for_post' ) ) && ( use_block_editor_for_post( $post ) ) ) {
$this->builder_assets[ $this->builder_post_type ]['post_data']['builder_editor'] = 'block';
$metaboxes['editor'] = 'block';
} else {
$this->builder_assets[ $this->builder_post_type ]['post_data']['builder_editor'] = 'classic';
$metaboxes['editor'] = 'classic';
}
$this->builder_assets[ $this->builder_post_type ]['post_data']['builder_class'] = get_called_class();
$this->builder_assets[ $this->builder_post_type ]['post_data']['builder_post_id'] = $this->builder_post_id;
$this->builder_assets[ $this->builder_post_type ]['post_data']['builder_post_title'] = get_the_title( $this->builder_post_id );
$this->builder_assets[ $this->builder_post_type ]['post_data']['builder_post_type'] = $this->builder_post_type;
wp_localize_script( 'learndash-new-builder-script', 'learndash_builder_assets', $this->builder_assets );
wp_localize_script( 'learndash-force-metaboxes', 'learndash_builder_metaboxes', $metaboxes );
}
/**
* Prints content for Course Builder meta box for admin
* This function is called from other add_meta_box functions
*
* @since 2.6.0
*
* @param object $post WP_Post.
*/
public function show_builder_box( $post ) {
// Use nonce for verification.
wp_nonce_field( $this->builder_prefix . '_' . $this->builder_post_type . '_' . $this->builder_post_id . '_nonce', $this->builder_prefix . '_nonce' );
?>
<div id="learndash_builder_box_wrap" class="learndash_builder_box_wrap" data-ld-course-id="<?php echo intval( $this->builder_post_id ); ?>" data-ld-typenow="<?php echo esc_attr( $post->post_type ); ?>">
<input type="hidden" id="<?php echo esc_attr( $this->builder_prefix ); ?>_data" name="<?php echo esc_attr( $this->builder_prefix ); ?>[<?php echo esc_attr( $this->builder_post_type ); ?>][<?php echo intval( $this->builder_post_id ); ?>]" value="" />
<div class="learndash_builder_items">
</div>
<br style="clear:both;"/>
</div>
<?php
}
/**
* Show builder headers
*
* @since 2.6.0
*/
public function show_builder_headers() {
$this->show_builder_header_left();
$this->show_builder_header_right();
}
/**
* Show builder header left
*
* @since 2.6.0
*/
public function show_builder_header_left() {
?>
<div class="learndash-header-left">
<?php echo $this->get_build_items_count(); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped -- Need to output HTML ?>
</div>
<?php
}
/**
* Show builder header right
*
* @since 2.6.0
*/
public function show_builder_header_right() {
?>
<div class="learndash-header-right">
<span class="ld-show-all"><?php esc_html_e( 'Expand All', 'learndash' ); ?></span>
<span class="ld-divide-all">|</span>
<span class="ld-hide-all"><?php esc_html_e( 'Collapse All', 'learndash' ); ?></span>
</div>
<?php
}
/**
* Utility function to get the label for Post Type.
*
* @since 2.6.0
*
* @param string $post_type Post Type slug.
* @param boolean $singular True if singular label needed. False for plural.
*
* @return string.
*/
public function get_label_for_post_type( $post_type = '', $singular = true ) {
return '';
}
/**
* Show the Course Box Selectors - Left side sections. There will be one selector per post type.
*
* @since 2.6.0
*/
public function show_builder_selectors() {
$builder_post_type_label = $this->get_label_for_post_type( $this->builder_post_type );
foreach ( $this->selector_post_types as $selector_post_type ) {
$post_type_object = get_post_type_object( $selector_post_type );
if ( is_a( $post_type_object, 'WP_Post_Type' ) ) {
$this->builder_assets[ $this->builder_post_type ]['messages'][ 'confirm_remove_' . $selector_post_type ] = sprintf(
// translators: 'placeholders: will be post type labels like Course, Lesson, Topic'.
esc_html_x( 'Are you sure you want to remove this %1$s from the %2$s? (This will also remove all sub-items)', 'placeholders: will be post type labels like Course, Lesson, Topic', 'learndash' ),
LearnDash_Custom_Label::get_label( $this->get_label_for_post_type( $selector_post_type ) ),
LearnDash_Custom_Label::get_label( $builder_post_type_label )
);
$this->builder_assets[ $this->builder_post_type ]['messages'][ 'confirm_trash_' . $selector_post_type ] = sprintf(
// translators: placeholder: will be post type label like Course, Lesson, Topic.
esc_html_x( 'Are you sure you want to move this %s to Trash?', 'placeholder: will be post type label like Course, Lesson, Topic', 'learndash' ),
LearnDash_Custom_Label::get_label( $this->get_label_for_post_type( $selector_post_type ) )
);
$post_type_query_args = $this->build_selector_query(
array(
'post_type' => $selector_post_type,
)
);
if ( ! empty( $post_type_query_args ) ) {
$post_type_query = new WP_Query( $post_type_query_args );
$selector_post_type_steps = $this->get_selector_selected_steps( $selector_post_type );
$selector_post_type_steps = htmlspecialchars( wp_json_encode( $selector_post_type_steps ) );
?>
<div class="learndash-selector-container learndash-selector-container-<?php echo esc_attr( $selector_post_type ); ?>" data-ld-type="<?php echo esc_attr( $selector_post_type ); ?>" data-ld-selected="<?php echo esc_attr( $selector_post_type_steps ); ?>">
<h3 class="learndash-selector-header"><span class="learndash-selector-title"><?php echo learndash_get_custom_label( $this->get_label_for_post_type( $selector_post_type, false ) ); ?></span><span class="ld-course-builder-action ld-course-builder-action-show-hide ld-course-builder-action-show dashicons" title="<?php esc_html_e( 'Expand/Collapse Section', 'learndash' ); ?>"></span><span class="ld-course-builder-action ld-course-builder-action-add dashicons" title="<?php esc_html_e( 'New', 'learndash' ); ?>"><img src="<?php echo esc_url( admin_url( 'images/wpspin_light-2x.gif' ) ); ?>" alt="" /></span></h3> <?php // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped -- Method escapes output ?>
<div class="learndash-selector-post-listing">
<?php
$row_single = $this->build_selector_row_single( null, $selector_post_type );
if ( ! empty( $row_single ) ) {
?>
<ul class="learndash-row-placeholder" style="display:none"><?php echo $row_single; ?></ul> <?php // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped -- Need to output HTML ?>
<?php
}
?>
<div class="learndash-selector-pager">
<p class="pager-info">
<?php echo $this->build_selector_pages_buttons( $post_type_query ); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped -- Need to output HTML ?>
</p>
</div>
<div class="learndash-selector-search"><input type="text" placeholder="<?php esc_html_e( 'Search...', 'learndash' ); ?>" /></div>
<ul id="learndash-selector-post-listing-<?php echo esc_attr( $selector_post_type ); ?>" class="learndash-selector-post-listing dropfalse"> <?php // cspell:disable-line. ?>
<?php
if ( $post_type_query->have_posts() ) {
echo $this->build_selector_rows( $post_type_query ); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped -- Need to output HTML
}
?>
</ul>
</div>
</div>
<?php
}
}
}
}
/**
* Common function to show Selector pager buttons.
*
* @since 2.6.0
*
* @param object $post_type_query WP_Query instance.
*
* @return string Button(s) HTML.
*/
public function build_selector_pages_buttons( $post_type_query ) {
$pager_buttons = '';
if ( $post_type_query instanceof WP_Query ) {
$first_page = 1;
$current_page = intval( $post_type_query->query['paged'] );
$last_page = intval( $post_type_query->max_num_pages );
if ( empty( $last_page ) ) {
$last_page = 1;
}
if ( $current_page <= 1 ) {
$prev_page = 1;
$prev_disabled = ' disabled="disabled" ';
} else {
$prev_page = $current_page - 1;
$prev_disabled = '';
}
if ( $current_page >= $last_page ) {
$next_page = $last_page;
$next_disabled = ' disabled="disabled" ';
} else {
$next_page = $current_page + 1;
$next_disabled = '';
}
$pager_buttons .= '<button ' . $prev_disabled . ' class="button button-simple first" data-page="' . $first_page . '" title="' . esc_attr__( 'First Page', 'learndash' ) . '">«</button>';
$pager_buttons .= '<button ' . $prev_disabled . ' class="button button-simple prev" data-page="' . $prev_page . '" title="' . esc_attr__( 'Previous Page', 'learndash' ) . '">‹</button>';
$pager_buttons .= '<span><span class="pagedisplay"><span class="current_page">' . $current_page . '</span> / <span class="total_pages">' . $last_page . '</span></span></span>';
$pager_buttons .= '<button ' . $next_disabled . ' class="button button-simple next" data-page="' . $next_page . '" title="' . esc_attr__( 'Next Page', 'learndash' ) . '">›</button>';
$pager_buttons .= '<button ' . $next_disabled . ' class="button button-simple last" data-page="' . $last_page . '" title="' . esc_attr__( 'Last Page', 'learndash' ) . '" >»</button>';
}
return $pager_buttons;
}
/**
* Show selector rows.
*
* @since 2.6.0
*
* @param object $post_type_query WP_Query instance.
*/
protected function build_selector_rows( $post_type_query ) {
$selector_rows = '';
if ( $post_type_query instanceof WP_Query ) {
$selector_post_type = $post_type_query->query['post_type'];
$selector_post_type_object = get_post_type_object( $selector_post_type );
$selector_label = $selector_post_type_object->label;
$selector_slug = $this->get_label_for_post_type( $selector_post_type );
foreach ( $post_type_query->posts as $p ) {
$selector_rows .= $this->build_selector_row_single( $p, $selector_post_type );
}
}
return $selector_rows;
}
/**
* Build Course Steps HTML.
*
* @since 2.6.0
*/
public function build_course_steps_html() {
$steps_html = '';
$course_steps = $this->ld_course_steps_object->get_steps();
if ( ! empty( $course_steps ) ) {
$steps_html .= $this->process_course_steps( $course_steps );
}
return $steps_html;
}
// End of functions.
}
}
if ( ( defined( 'LEARNDASH_COURSE_BUILDER' ) ) && ( LEARNDASH_COURSE_BUILDER === true ) ) {
require_once LEARNDASH_LMS_PLUGIN_DIR . 'includes/admin/classes-builders/class-learndash-admin-course-builder-metabox.php';
}
if ( ( defined( 'LEARNDASH_QUIZ_BUILDER' ) ) && ( LEARNDASH_QUIZ_BUILDER === true ) ) {
require_once LEARNDASH_LMS_PLUGIN_DIR . 'includes/admin/classes-builders/class-learndash-admin-quiz-builder-metabox.php';
}
add_action(
'wp_ajax_learndash_builder_selector_pager',
function() {
if ( ! current_user_can( 'read' ) ) {
echo wp_json_encode( array() );
wp_die();
}
if ( ( ! isset( $_POST['builder_data'] ) ) || ( empty( $_POST['builder_data'] ) ) ) { // phpcs:ignore WordPress.Security.NonceVerification.Missing
echo wp_json_encode( array() );
wp_die();
}
$builder_data = $_POST['builder_data']; // phpcs:ignore WordPress.Security.NonceVerification.Missing, WordPress.Security.ValidatedSanitizedInput.MissingUnslash, WordPress.Security.ValidatedSanitizedInput.InputNotSanitized
if ( ( ! isset( $_POST['builder_query_args'] ) ) || ( empty( $_POST['builder_query_args'] ) ) ) { // phpcs:ignore WordPress.Security.NonceVerification.Missing
echo wp_json_encode( array() );
wp_die();
}
$builder_query_args = $_POST['builder_query_args']; // phpcs:ignore WordPress.Security.NonceVerification.Missing, WordPress.Security.ValidatedSanitizedInput.MissingUnslash, WordPress.Security.ValidatedSanitizedInput.InputNotSanitized
$builder_data = learndash_verify_builder_data( $builder_data );
$builder_instance = $builder_data['builder_class']::add_instance();
if ( is_a( $builder_instance, $builder_data['builder_class'] ) ) {
$builder_instance->builder_init( $builder_data['builder_post_id'] );
$builder_instance->learndash_builder_selector_pager( $builder_query_args );
}
echo wp_json_encode( array() );
wp_die();
}
);
add_action(
'wp_ajax_learndash_builder_selector_search',
function() {
if ( ! current_user_can( 'read' ) ) {
echo wp_json_encode( array() );
wp_die();
}
if ( ( ! isset( $_POST['builder_data'] ) ) || ( empty( $_POST['builder_data'] ) ) ) { // phpcs:ignore WordPress.Security.NonceVerification.Missing
echo wp_json_encode( array() );
wp_die();
}
$builder_data = $_POST['builder_data']; // phpcs:ignore WordPress.Security.NonceVerification.Missing, WordPress.Security.ValidatedSanitizedInput.MissingUnslash, WordPress.Security.ValidatedSanitizedInput.InputNotSanitized
if ( ( ! isset( $_POST['builder_query_args'] ) ) || ( empty( $_POST['builder_query_args'] ) ) ) { // phpcs:ignore WordPress.Security.NonceVerification.Missing
echo wp_json_encode( array() );
wp_die();
}
$builder_query_args = $_POST['builder_query_args']; // phpcs:ignore WordPress.Security.NonceVerification.Missing, WordPress.Security.ValidatedSanitizedInput.MissingUnslash, WordPress.Security.ValidatedSanitizedInput.InputNotSanitized
$builder_data = learndash_verify_builder_data( $builder_data );
$builder_instance = $builder_data['builder_class']::add_instance();
if ( is_a( $builder_instance, $builder_data['builder_class'] ) ) {
$builder_instance->builder_init( $builder_data['builder_post_id'] );
$builder_instance->learndash_builder_selector_search( $builder_query_args );
}
echo wp_json_encode( array() );
wp_die();
}
);
add_action(
'wp_ajax_learndash_builder_selector_step_trash',
function() {
if ( ! current_user_can( 'edit_courses' ) ) {
echo wp_json_encode( array() );
wp_die();
}
if ( ( ! isset( $_POST['builder_data'] ) ) || ( empty( $_POST['builder_data'] ) ) ) { // phpcs:ignore WordPress.Security.NonceVerification.Missing
echo wp_json_encode( array() );
wp_die();
}
$builder_data = $_POST['builder_data']; // phpcs:ignore WordPress.Security.NonceVerification.Missing, WordPress.Security.ValidatedSanitizedInput.MissingUnslash, WordPress.Security.ValidatedSanitizedInput.InputNotSanitized
if ( ( ! isset( $_POST['builder_query_args'] ) ) || ( empty( $_POST['builder_query_args'] ) ) ) { // phpcs:ignore WordPress.Security.NonceVerification.Missing
echo wp_json_encode( array() );
wp_die();
}
$builder_query_args = $_POST['builder_query_args']; // phpcs:ignore WordPress.Security.NonceVerification.Missing, WordPress.Security.ValidatedSanitizedInput.MissingUnslash, WordPress.Security.ValidatedSanitizedInput.InputNotSanitized
$builder_data = learndash_verify_builder_data( $builder_data );
$builder_instance = $builder_data['builder_class']::add_instance();
if ( is_a( $builder_instance, $builder_data['builder_class'] ) ) {
$builder_instance->builder_init( $builder_data['builder_post_id'] );
$builder_instance->learndash_builder_selector_step_trash( $builder_query_args );
}
echo wp_json_encode( array() );
wp_die();
}
);
add_action(
'wp_ajax_learndash_builder_selector_step_new',
function() {
if ( ! current_user_can( 'edit_courses' ) ) {
echo wp_json_encode( array() );
wp_die();
}
if ( ( ! isset( $_POST['builder_data'] ) ) || ( empty( $_POST['builder_data'] ) ) ) { // phpcs:ignore WordPress.Security.NonceVerification.Missing
echo wp_json_encode( array() );
wp_die();
}
$builder_data = $_POST['builder_data'];// phpcs:ignore WordPress.Security.NonceVerification.Missing, WordPress.Security.ValidatedSanitizedInput.MissingUnslash, WordPress.Security.ValidatedSanitizedInput.InputNotSanitized
if ( ( ! isset( $_POST['builder_query_args'] ) ) || ( empty( $_POST['builder_query_args'] ) ) ) { // phpcs:ignore WordPress.Security.NonceVerification.Missing
echo wp_json_encode( array() );
wp_die();
}
$builder_query_args = $_POST['builder_query_args'];// phpcs:ignore WordPress.Security.NonceVerification.Missing, WordPress.Security.ValidatedSanitizedInput.MissingUnslash, WordPress.Security.ValidatedSanitizedInput.InputNotSanitized
$builder_data = learndash_verify_builder_data( $builder_data );
$builder_instance = $builder_data['builder_class']::add_instance();
if ( is_a( $builder_instance, $builder_data['builder_class'] ) ) {
$builder_instance->builder_init( $builder_data['builder_post_id'] );
$builder_instance->learndash_builder_selector_step_new( $builder_query_args );
}
echo wp_json_encode( array() );
wp_die();
}
);
add_action(
'wp_ajax_learndash_builder_selector_step_title',
function() {
if ( ! current_user_can( 'edit_courses' ) ) {
echo wp_json_encode( array() );
wp_die();
}
if ( ( ! isset( $_POST['builder_data'] ) ) || ( empty( $_POST['builder_data'] ) ) ) { // phpcs:ignore WordPress.Security.NonceVerification.Missing
echo wp_json_encode( array() );
wp_die();
}
$builder_data = $_POST['builder_data']; // phpcs:ignore WordPress.Security.NonceVerification.Missing, WordPress.Security.ValidatedSanitizedInput.MissingUnslash, WordPress.Security.ValidatedSanitizedInput.InputNotSanitized
if ( ( ! isset( $_POST['builder_query_args'] ) ) || ( empty( $_POST['builder_query_args'] ) ) ) { // phpcs:ignore WordPress.Security.NonceVerification.Missing
echo wp_json_encode( array() );
wp_die();
}
$builder_query_args = $_POST['builder_query_args']; // phpcs:ignore WordPress.Security.NonceVerification.Missing, WordPress.Security.ValidatedSanitizedInput.MissingUnslash, WordPress.Security.ValidatedSanitizedInput.InputNotSanitized
$builder_data = learndash_verify_builder_data( $builder_data );
$builder_instance = $builder_data['builder_class']::add_instance();
if ( is_a( $builder_instance, $builder_data['builder_class'] ) ) {
$builder_instance->builder_init( $builder_data['builder_post_id'] );
$builder_instance->learndash_builder_selector_step_title( $builder_query_args );
}
echo wp_json_encode( array() );
wp_die();
}
);
/**
* Verify builder data
*
* @since 3.0.0
*
* @param array $builder_data Builder Data.
*/
function learndash_verify_builder_data( $builder_data = array() ) {
if ( empty( $builder_data ) ) {
echo wp_json_encode( array() );
wp_die();
}
if ( ( ! isset( $builder_data['builder_class'] ) ) || ( empty( $builder_data['builder_class'] ) ) ) {
echo wp_json_encode( array() );
wp_die();
}
$builder_data['builder_class'] = esc_attr( $builder_data['builder_class'] );
if ( ( ! isset( $builder_data['builder_post_type'] ) ) || ( empty( $builder_data['builder_post_type'] ) ) ) {
echo wp_json_encode( array() );
wp_die();
}
$builder_data['builder_post_type'] = esc_attr( $builder_data['builder_post_type'] );
if ( ( ! isset( $builder_data['builder_post_id'] ) ) || ( empty( $builder_data['builder_post_id'] ) ) ) {
echo wp_json_encode( array() );
wp_die();
}
$builder_data['builder_post_id'] = absint( $builder_data['builder_post_id'] );
if ( ( ! isset( $builder_data['builder_nonce'] ) ) || ( empty( $builder_data['builder_nonce'] ) ) ) {
echo wp_json_encode( array() );
wp_die();
}
$nonce_field_value = 'learndash_builder_' . $builder_data['builder_post_type'] . '_' . $builder_data['builder_post_id'] . '_nonce';
if ( ( ! isset( $builder_data['builder_nonce'] ) ) || ( ! wp_verify_nonce( $builder_data['builder_nonce'], $nonce_field_value ) ) ) {
echo wp_json_encode( array() );
wp_die();
}
if ( ! is_subclass_of( $builder_data['builder_class'], 'Learndash_Admin_Builder' ) ) {
echo wp_json_encode( array() );
wp_die();
}
return $builder_data;
}