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EDIT :: class-wp-widget-form-customize-control.php

<?php /** * Customize API: WP_Widget_Form_Customize_Control class * * @package WordPress * @subpackage Customize * @since 4.4.0 */ /** * Widget Form Customize Control class. * * @since 3.9.0 * * @see WP_Customize_Control */ class WP_Widget_Form_Customize_Control extends WP_Customize_Control { public $type = 'widget_form'; public $widget_id; public $widget_id_base; public $sidebar_id; public $is_new = false; public $width; public $height; public $is_wide = false; /** * Gather control params for exporting to JavaScript. * * @global array $wp_registered_widgets */ 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']; } /** * 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. * * @since 4.0.0 * @access public * * @return bool Whether the widget is rendered. */ public function active_callback() { return $this->manager->widgets->is_widget_rendered( $this->widget_id ); } }

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