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Edit File: class-wp-customize-sidebar-section.php
<?php /** * Customize API: WP_Customize_Sidebar_Section class * * @package WordPress * @subpackage Customize * @since 4.4.0 */ /** * Customizer section representing widget area (sidebar). * * @since 4.1.0 * * @see WP_Customize_Section */ class WP_Customize_Sidebar_Section extends WP_Customize_Section { /** * Type of this section. * * @since 4.1.0 * @var string */ public $type = 'sidebar'; /** * Unique identifier. * * @since 4.1.0 * @var string */ public $sidebar_id; /** * Gather the parameters passed to client JavaScript via JSON. * * @since 4.1.0 * * @return array The array to be exported to the client as JSON. */ public function json() { $json = parent::json(); $json['sidebarId'] = $this->sidebar_id; return $json; } /** * Whether the current sidebar is rendered on the page. * * @since 4.1.0 * * @return bool Whether sidebar is rendered. */ public function active_callback() { return $this->manager->widgets->is_sidebar_rendered( $this->sidebar_id ); } }