WP_Widget_Form_Customize_Control::to_json()

	public function to_json() {
		global $wp_registered_widgets;

		parent::to_json();
		$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();
		}

		$args = array(
			'widget_id' => $widget['id'],
			'widget_name' => $widget['name'],
		);

		$args = wp_list_widget_controls_dynamic_sidebar( array( 0 => $args, 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'];
	}