: str_replace(): Passing null to parameter #2 ($replace) of type array|string is deprecated in
* Customize API: WP_Widget_Form_Customize_Control class
* Widget Form Customize Control class.
* @see WP_Customize_Control
class WP_Widget_Form_Customize_Control extends WP_Customize_Control {
* Customize control type.
public $type = 'widget_form';
* @var bool True if new, false otherwise. Default false.
* @var bool True if wide, false otherwise. Default false.
* Gather control params for exporting to JavaScript.
* @global array $wp_registered_widgets
public function to_json() {
global $wp_registered_widgets;
$exported_properties = array( 'widget_id', 'widget_id_base', 'sidebar_id', 'width', 'height', 'is_wide' );
foreach ( $exported_properties as $key ) {
$this->json[ $key ] = $this->$key;
// Get the widget_control and widget_content.
require_once ABSPATH . 'wp-admin/includes/widgets.php';
$widget = $wp_registered_widgets[ $this->widget_id ];
if ( ! isset( $widget['params'][0] ) ) {
$widget['params'][0] = array();
'widget_id' => $widget['id'],
'widget_name' => $widget['name'],
$args = wp_list_widget_controls_dynamic_sidebar(
1 => $widget['params'][0],
$widget_control_parts = $this->manager->widgets->get_widget_control_parts( $args );
$this->json['widget_control'] = $widget_control_parts['control'];
$this->json['widget_content'] = $widget_control_parts['content'];
* Override render_content to be no-op since content is exported via to_json for deferred embedding.
public function render_content() {}
* Whether the current widget is rendered on the page.
* @return bool Whether the widget is rendered.
public function active_callback() {
return $this->manager->widgets->is_widget_rendered( $this->widget_id );