<?php
/**
 * Customize API: WP_Customize_Nav_Menu_Setting class
 *
 * @package WordPress
 * @subpackage Customize
 * @since 4.4.0
 */

/**
 * Customize Setting to represent a nav_menu.
 *
 * Subclass of WP_Customize_Setting to represent a nav_menu taxonomy term, and
 * the IDs for the nav_menu_items associated with the nav menu.
 *
 * @since 4.3.0
 *
 * @see wp_get_nav_menu_object()
 * @see WP_Customize_Setting
 */
class WP_Customize_Nav_Menu_Setting extends WP_Customize_Setting {

	const ID_PATTERN = '/^nav_menu\[(?P<id>-?\d+)\]$/';

	const TAXONOMY = 'nav_menu';

	const TYPE = 'nav_menu';

	/**
	 * Setting type.
	 *
	 * @since 4.3.0
	 * @var string
	 */
	public $type = self::TYPE;

	/**
	 * Default setting value.
	 *
	 * @since 4.3.0
	 * @var array
	 *
	 * @see wp_get_nav_menu_object()
	 */
	public $default = array(
		'name'        => '',
		'description' => '',
		'parent'      => 0,
		'auto_add'    => false,
	);

	/**
	 * Default transport.
	 *
	 * @since 4.3.0
	 * @var string
	 */
	public $transport = 'postMessage';

	/**
	 * The term ID represented by this setting instance.
	 *
	 * A negative value represents a placeholder ID for a new menu not yet saved.
	 *
	 * @since 4.3.0
	 * @var int
	 */
	public $term_id;

	/**
	 * Previous (placeholder) term ID used before creating a new menu.
	 *
	 * This value will be exported to JS via the {@see 'customize_save_response'} filter
	 * so that JavaScript can update the settings to refer to the newly-assigned
	 * term ID. This value is always negative to indicate it does not refer to
	 * a real term.
	 *
	 * @since 4.3.0
	 * @var int
	 *
	 * @see WP_Customize_Nav_Menu_Setting::update()
	 * @see WP_Customize_Nav_Menu_Setting::amend_customize_save_response()
	 */
	public $previous_term_id;

	/**
	 * Whether or not update() was called.
	 *
	 * @since 4.3.0
	 * @var bool
	 */
	protected $is_updated = false;

	/**
	 * Status for calling the update method, used in customize_save_response filter.
	 *
	 * See {@see 'customize_save_response'}.
	 *
	 * When status is inserted, the placeholder term ID is stored in `$previous_term_id`.
	 * When status is error, the error is stored in `$update_error`.
	 *
	 * @since 4.3.0
	 * @var string updated|inserted|deleted|error
	 *
	 * @see WP_Customize_Nav_Menu_Setting::update()
	 * @see WP_Customize_Nav_Menu_Setting::amend_customize_save_response()
	 */
	public $update_status;

	/**
	 * Any error object returned by wp_update_nav_menu_object() when setting is updated.
	 *
	 * @since 4.3.0
	 * @var WP_Error
	 *
	 * @see WP_Customize_Nav_Menu_Setting::update()
	 * @see WP_Customize_Nav_Menu_Setting::amend_customize_save_response()
	 */
	public $update_error;

	/**
	 * Constructor.
	 *
	 * Any supplied $args override class property defaults.
	 *
	 * @since 4.3.0
	 *
	 * @throws Exception If $id is not valid for this setting type.
	 *
	 * @param WP_Customize_Manager $manager Customizer bootstrap instance.
	 * @param string               $id      A specific ID of the setting.
	 *                                      Can be a theme mod or option name.
	 * @param array                $args    Optional. Setting arguments.
	 */
	public function __construct( WP_Customize_Manager $manager, $id, array $args = array() ) {
		if ( empty( $manager->nav_menus ) ) {
			throw new Exception( 'Expected WP_Customize_Manager::$nav_menus to be set.' );
		}

		if ( ! preg_match( self::ID_PATTERN, $id, $matches ) ) {
			throw new Exception( "Illegal widget setting ID: $id" );
		}

		$this->term_id = intval( $matches['id'] );

		parent::__construct( $manager, $id, $args );
	}

	/**
	 * Get the instance data for a given widget setting.
	 *
	 * @since 4.3.0
	 *
	 * @see wp_get_nav_menu_object()
	 *
	 * @return array Instance data.
	 */
	public function value() {
		if ( $this->is_previewed && get_current_blog_id() === $this->_previewed_blog_id ) {
			$undefined  = new stdClass(); // Symbol.
			$post_value = $this->post_value( $undefined );

			if ( $undefined === $post_value ) {
				$value = $this->_original_value;
			} else {
				$value = $post_value;
			}
		} else {
			$value = false;

			// Note that a term_id of less than one indicates a nav_menu not yet inserted.
			if ( $this->term_id > 0 ) {
				$term = wp_get_nav_menu_object( $this->term_id );

				if ( $term ) {
					$value = wp_array_slice_assoc( (array) $term, array_keys( $this->default ) );

					$nav_menu_options  = (array) get_option( 'nav_menu_options', array() );
					$value['auto_add'] = false;

					if ( isset( $nav_menu_options['auto_add'] ) && is_array( $nav_menu_options['auto_add'] ) ) {
						$value['auto_add'] = in_array( $term->term_id, $nav_menu_options['auto_add'], true );
					}
				}
			}

			if ( ! is_array( $value ) ) {
				$value = $this->default;
			}
		}

		return $value;
	}

	/**
	 * Handle previewing the setting.
	 *
	 * @since 4.3.0
	 * @since 4.4.0 Added boolean return value
	 *
	 * @see WP_Customize_Manager::post_value()
	 *
	 * @return bool False if method short-circuited due to no-op.
	 */
	public function preview() {
		if ( $this->is_previewed ) {
			return false;
		}

		$undefined      = new stdClass();
		$is_placeholder = ( $this->term_id < 0 );
		$is_dirty       = ( $undefined !== $this->post_value( $undefined ) );
		if ( ! $is_placeholder && ! $is_dirty ) {
			return false;
		}

		$this->is_previewed       = true;
		$this->_original_value    = $this->value();
		$this->_previewed_blog_id = get_current_blog_id();

		add_filter( 'wp_get_nav_menus', array( $this, 'filter_wp_get_nav_menus' ), 10, 2 );
		add_filter( 'wp_get_nav_menu_object', array( $this, 'filter_wp_get_nav_menu_object' ), 10, 2 );
		add_filter( 'default_option_nav_menu_options', array( $this, 'filter_nav_menu_options' ) );
		add_filter( 'option_nav_menu_options', array( $this, 'filter_nav_menu_options' ) );

		return true;
	}

	/**
	 * Filters the wp_get_nav_menus() result to ensure the inserted menu object is included, and the deleted one is removed.
	 *
	 * @since 4.3.0
	 *
	 * @see wp_get_nav_menus()
	 *
	 * @param WP_Term[] $menus An array of menu objects.
	 * @param array     $args  An array of arguments used to retrieve menu objects.
	 * @return WP_Term[] Array of menu objects.
	 */
	public function filter_wp_get_nav_menus( $menus, $args ) {
		if ( get_current_blog_id() !== $this->_previewed_blog_id ) {
			return $menus;
		}

		$setting_value = $this->value();
		$is_delete     = ( false === $setting_value );
		$index         = -1;

		// Find the existing menu item's position in the list.
		foreach ( $menus as $i => $menu ) {
			if ( (int) $this->term_id === (int) $menu->term_id || (int) $this->previous_term_id === (int) $menu->term_id ) {
				$index = $i;
				break;
			}
		}

		if ( $is_delete ) {
			// Handle deleted menu by removing it from the list.
			if ( -1 !== $index ) {
				array_splice( $menus, $index, 1 );
			}
		} else {
			// Handle menus being updated or inserted.
			$menu_obj = (object) array_merge(
				array(
					'term_id'          => $this->term_id,
					'term_taxonomy_id' => $this->term_id,
					'slug'             => sanitize_title( $setting_value['name'] ),
					'count'            => 0,
					'term_group'       => 0,
					'taxonomy'         => self::TAXONOMY,
					'filter'           => 'raw',
				),
				$setting_value
			);

			array_splice( $menus, $index, ( -1 === $index ? 0 : 1 ), array( $menu_obj ) );
		}

		// Make sure the menu objects get re-sorted after an update/insert.
		if ( ! $is_delete && ! empty( $args['orderby'] ) ) {
			$menus = wp_list_sort(
				$menus,
				array(
					$args['orderby'] => 'ASC',
				)
			);
		}
		// @todo Add support for $args['hide_empty'] === true.

		return $menus;
	}

	/**
	 * Temporary non-closure passing of orderby value to function.
	 *
	 * @since 4.3.0
	 * @var string
	 *
	 * @see WP_Customize_Nav_Menu_Setting::filter_wp_get_nav_menus()
	 * @see WP_Customize_Nav_Menu_Setting::_sort_menus_by_orderby()
	 */
	protected $_current_menus_sort_orderby;

	/**
	 * Sort menu objects by the class-supplied orderby property.
	 *
	 * This is a workaround for a lack of closures.
	 *
	 * @since 4.3.0
	 * @deprecated 4.7.0 Use wp_list_sort()
	 *
	 * @param object $menu1
	 * @param object $menu2
	 * @return int
	 *
	 * @see WP_Customize_Nav_Menu_Setting::filter_wp_get_nav_menus()
	 */
	protected function _sort_menus_by_orderby( $menu1, $menu2 ) {
		_deprecated_function( __METHOD__, '4.7.0', 'wp_list_sort' );

		$key = $this->_current_menus_sort_orderby;
		return strcmp( $menu1->$key, $menu2->$key );
	}

	/**
	 * Filters the wp_get_nav_menu_object() result to supply the previewed menu object.
	 *
	 * Requesting a nav_menu object by anything but ID is not supported.
	 *
	 * @since 4.3.0
	 *
	 * @see wp_get_nav_menu_object()
	 *
	 * @param object|null $menu_obj Object returned by wp_get_nav_menu_object().
	 * @param string      $menu_id  ID of the nav_menu term. Requests by slug or name will be ignored.
	 * @return object|null
	 */
	public function filter_wp_get_nav_menu_object( $menu_obj, $menu_id ) {
		$ok = (
			get_current_blog_id() === $this->_previewed_blog_id
			&&
			is_int( $menu_id )
			&&
			$menu_id === $this->term_id
		);
		if ( ! $ok ) {
			return $menu_obj;
		}

		$setting_value = $this->value();

		// Handle deleted menus.
		if ( false === $setting_value ) {
			return false;
		}

		// Handle sanitization failure by preventing short-circuiting.
		if ( null === $setting_value ) {
			return $menu_obj;
		}

		$menu_obj = (object) array_merge(
			array(
				'term_id'          => $this->term_id,
				'term_taxonomy_id' => $this->term_id,
				'slug'             => sanitize_title( $setting_value['name'] ),
				'count'            => 0,
				'term_group'       => 0,
				'taxonomy'         => self::TAXONOMY,
				'filter'           => 'raw',
			),
			$setting_value
		);

		return $menu_obj;
	}

	/**
	 * Filters the nav_menu_options option to include this menu's auto_add preference.
	 *
	 * @since 4.3.0
	 *
	 * @param array $nav_menu_options Nav menu options including auto_add.
	 * @return array (Maybe) modified nav menu options.
	 */
	public function filter_nav_menu_options( $nav_menu_options ) {
		if ( get_current_blog_id() !== $this->_previewed_blog_id ) {
			return $nav_menu_options;
		}

		$menu             = $this->value();
		$nav_menu_options = $this->filter_nav_menu_options_value(
			$nav_menu_options,
			$this->term_id,
			false === $menu ? false : $menu['auto_add']
		);

		return $nav_menu_options;
	}

	/**
	 * Sanitize an input.
	 *
	 * Note that parent::sanitize() erroneously does wp_unslash() on $value, but
	 * we remove that in this override.
	 *
	 * @since 4.3.0
	 *
	 * @param array $value The value to sanitize.
	 * @return array|false|null Null if an input isn't valid. False if it is marked for deletion.
	 *                          Otherwise the sanitized value.
	 */
	public function sanitize( $value ) {
		// Menu is marked for deletion.
		if ( false === $value ) {
			return $value;
		}

		// Invalid.
		if ( ! is_array( $value ) ) {
			return null;
		}

		$default = array(
			'name'        => '',
			'description' => '',
			'parent'      => 0,
			'auto_add'    => false,
		);
		$value   = array_merge( $default, $value );
		$value   = wp_array_slice_assoc( $value, array_keys( $default ) );

		$value['name']        = trim( esc_html( $value['name'] ) ); // This sanitization code is used in wp-admin/nav-menus.php.
		$value['description'] = sanitize_text_field( $value['description'] );
		$value['parent']      = max( 0, intval( $value['parent'] ) );
		$value['auto_add']    = ! empty( $value['auto_add'] );

		if ( '' === $value['name'] ) {
			$value['name'] = _x( '(unnamed)', 'Missing menu name.' );
		}

		/** This filter is documented in wp-includes/class-wp-customize-setting.php */
		return apply_filters( "customize_sanitize_{$this->id}", $value, $this );
	}

	/**
	 * Storage for data to be sent back to client in customize_save_response filter.
	 *
	 * See {@see 'customize_save_response'}.
	 *
	 * @since 4.3.0
	 * @var array
	 *
	 * @see WP_Customize_Nav_Menu_Setting::amend_customize_save_response()
	 */
	protected $_widget_nav_menu_updates = array();

	/**
	 * Create/update the nav_menu term for this setting.
	 *
	 * Any created menus will have their assigned term IDs exported to the client
	 * via the {@see 'customize_save_response'} filter. Likewise, any errors will be exported
	 * to the client via the customize_save_response() filter.
	 *
	 * To delete a menu, the client can send false as the value.
	 *
	 * @since 4.3.0
	 *
	 * @see wp_update_nav_menu_object()
	 *
	 * @param array|false $value {
	 *     The value to update. Note that slug cannot be updated via wp_update_nav_menu_object().
	 *     If false, then the menu will be deleted entirely.
	 *
	 *     @type string $name        The name of the menu to save.
	 *     @type string $description The term description. Default empty string.
	 *     @type int    $parent      The id of the parent term. Default 0.
	 *     @type bool   $auto_add    Whether pages will auto_add to this menu. Default false.
	 * }
	 * @return null|void
	 */
	protected function update( $value ) {
		if ( $this->is_updated ) {
			return;
		}

		$this->is_updated = true;
		$is_placeholder   = ( $this->term_id < 0 );
		$is_delete        = ( false === $value );

		add_filter( 'customize_save_response', array( $this, 'amend_customize_save_response' ) );

		$auto_add = null;
		if ( $is_delete ) {
			// If the current setting term is a placeholder, a delete request is a no-op.
			if ( $is_placeholder ) {
				$this->update_status = 'deleted';
			} else {
				$r = wp_delete_nav_menu( $this->term_id );

				if ( is_wp_error( $r ) ) {
					$this->update_status = 'error';
					$this->update_error  = $r;
				} else {
					$this->update_status = 'deleted';
					$auto_add            = false;
				}
			}
		} else {
			// Insert or update menu.
			$menu_data              = wp_array_slice_assoc( $value, array( 'description', 'parent' ) );
			$menu_data['menu-name'] = $value['name'];

			$menu_id              = $is_placeholder ? 0 : $this->term_id;
			$r                    = wp_update_nav_menu_object( $menu_id, wp_slash( $menu_data ) );
			$original_name        = $menu_data['menu-name'];
			$name_conflict_suffix = 1;
			while ( is_wp_error( $r ) && 'menu_exists' === $r->get_error_code() ) {
				$name_conflict_suffix += 1;
				/* translators: 1: Original menu name, 2: Duplicate count. */
				$menu_data['menu-name'] = sprintf( __( '%1$s (%2$d)' ), $original_name, $name_conflict_suffix );
				$r                      = wp_update_nav_menu_object( $menu_id, wp_slash( $menu_data ) );
			}

			if ( is_wp_error( $r ) ) {
				$this->update_status = 'error';
				$this->update_error  = $r;
			} else {
				if ( $is_placeholder ) {
					$this->previous_term_id = $this->term_id;
					$this->term_id          = $r;
					$this->update_status    = 'inserted';
				} else {
					$this->update_status = 'updated';
				}

				$auto_add = $value['auto_add'];
			}
		}

		if ( null !== $auto_add ) {
			$nav_menu_options = $this->filter_nav_menu_options_value(
				(array) get_option( 'nav_menu_options', array() ),
				$this->term_id,
				$auto_add
			);
			update_option( 'nav_menu_options', $nav_menu_options );
		}

		if ( 'inserted' === $this->update_status ) {
			// Make sure that new menus assigned to nav menu locations use their new IDs.
			foreach ( $this->manager->settings() as $setting ) {
				if ( ! preg_match( '/^nav_menu_locations\[/', $setting->id ) ) {
					continue;
				}

				$post_value = $setting->post_value( null );
				if ( ! is_null( $post_value ) && intval( $post_value ) === $this->previous_term_id ) {
					$this->manager->set_post_value( $setting->id, $this->term_id );
					$setting->save();
				}
			}

			// Make sure that any nav_menu widgets referencing the placeholder nav menu get updated and sent back to client.
			foreach ( array_keys( $this->manager->unsanitized_post_values() ) as $setting_id ) {
				$nav_menu_widget_setting = $this->manager->get_setting( $setting_id );
				if ( ! $nav_menu_widget_setting || ! preg_match( '/^widget_nav_menu\[/', $nav_menu_widget_setting->id ) ) {
					continue;
				}

				$widget_instance = $nav_menu_widget_setting->post_value(); // Note that this calls WP_Customize_Widgets::sanitize_widget_instance().
				if ( empty( $widget_instance['nav_menu'] ) || intval( $widget_instance['nav_menu'] ) !== $this->previous_term_id ) {
					continue;
				}

				$widget_instance['nav_menu'] = $this->term_id;
				$updated_widget_instance     = $this->manager->widgets->sanitize_widget_js_instance( $widget_instance );
				$this->manager->set_post_value( $nav_menu_widget_setting->id, $updated_widget_instance );
				$nav_menu_widget_setting->save();

				$this->_widget_nav_menu_updates[ $nav_menu_widget_setting->id ] = $updated_widget_instance;
			}
		}
	}

	/**
	 * Updates a nav_menu_options array.
	 *
	 * @since 4.3.0
	 *
	 * @see WP_Customize_Nav_Menu_Setting::filter_nav_menu_options()
	 * @see WP_Customize_Nav_Menu_Setting::update()
	 *
	 * @param array $nav_menu_options Array as returned by get_option( 'nav_menu_options' ).
	 * @param int   $menu_id          The term ID for the given menu.
	 * @param bool  $auto_add         Whether to auto-add or not.
	 * @return array (Maybe) modified nav_menu_otions array.
	 */
	protected function filter_nav_menu_options_value( $nav_menu_options, $menu_id, $auto_add ) {
		$nav_menu_options = (array) $nav_menu_options;
		if ( ! isset( $nav_menu_options['auto_add'] ) ) {
			$nav_menu_options['auto_add'] = array();
		}

		$i = array_search( $menu_id, $nav_menu_options['auto_add'], true );

		if ( $auto_add && false === $i ) {
			array_push( $nav_menu_options['auto_add'], $this->term_id );
		} elseif ( ! $auto_add && false !== $i ) {
			array_splice( $nav_menu_options['auto_add'], $i, 1 );
		}

		return $nav_menu_options;
	}

	/**
	 * Export data for the JS client.
	 *
	 * @since 4.3.0
	 *
	 * @see WP_Customize_Nav_Menu_Setting::update()
	 *
	 * @param array $data Additional information passed back to the 'saved' event on `wp.customize`.
	 * @return array Export data.
	 */
	public function amend_customize_save_response( $data ) {
		if ( ! isset( $data['nav_menu_updates'] ) ) {
			$data['nav_menu_updates'] = array();
		}
		if ( ! isset( $data['widget_nav_menu_updates'] ) ) {
			$data['widget_nav_menu_updates'] = array();
		}

		$data['nav_menu_updates'][] = array(
			'term_id'          => $this->term_id,
			'previous_term_id' => $this->previous_term_id,
			'error'            => $this->update_error ? $this->update_error->get_error_code() : null,
			'status'           => $this->update_status,
			'saved_value'      => 'deleted' === $this->update_status ? null : $this->value(),
		);

		$data['widget_nav_menu_updates'] = array_merge(
			$data['widget_nav_menu_updates'],
			$this->_widget_nav_menu_updates
		);
		$this->_widget_nav_menu_updates  = array();

		return $data;
	}
}


<?php
/**
 * Customize API: WP_Customize_Nav_Menus_Panel class
 *
 * @package WordPress
 * @subpackage Customize
 * @since 4.4.0
 */

/**
 * Customize Nav Menus Panel Class
 *
 * Needed to add screen options.
 *
 * @since 4.3.0
 *
 * @see WP_Customize_Panel
 */
class WP_Customize_Nav_Menus_Panel extends WP_Customize_Panel {

	/**
	 * Control type.
	 *
	 * @since 4.3.0
	 * @var string
	 */
	public $type = 'nav_menus';

	/**
	 * Render screen options for Menus.
	 *
	 * @since 4.3.0
	 */
	public function render_screen_options() {
		// Adds the screen options.
		require_once ABSPATH . 'wp-admin/includes/nav-menu.php';
		add_filter( 'manage_nav-menus_columns', 'wp_nav_menu_manage_columns' );

		// Display screen options.
		$screen = WP_Screen::get( 'nav-menus.php' );
		$screen->render_screen_options( array( 'wrap' => false ) );
	}

	/**
	 * Returns the advanced options for the nav menus page.
	 *
	 * Link title attribute added as it's a relatively advanced concept for new users.
	 *
	 * @since 4.3.0
	 * @deprecated 4.5.0 Deprecated in favor of wp_nav_menu_manage_columns().
	 */
	public function wp_nav_menu_manage_columns() {
		_deprecated_function( __METHOD__, '4.5.0', 'wp_nav_menu_manage_columns' );
		require_once ABSPATH . 'wp-admin/includes/nav-menu.php';
		return wp_nav_menu_manage_columns();
	}

	/**
	 * An Underscore (JS) template for this panel's content (but not its container).
	 *
	 * Class variables for this panel class are available in the `data` JS object;
	 * export custom variables by overriding WP_Customize_Panel::json().
	 *
	 * @since 4.3.0
	 *
	 * @see WP_Customize_Panel::print_template()
	 */
	protected function content_template() {
		?>
		<li class="panel-meta customize-info accordion-section <# if ( ! data.description ) { #> cannot-expand<# } #>">
			<button type="button" class="customize-panel-back" tabindex="-1">
				<?php _e( 'Back' ); ?>
			</button>

					<?php
					/* translators: %s: The site/panel title in the Customizer. */
					printf( __( 'You are customizing %s' ), '{{ data.title }}' );
					?>

				<button type="button" class="customize-help-toggle dashicons dashicons-editor-help" aria-expanded="false">
					<?php _e( 'Help' ); ?>
				</button>
				<button type="button" class="customize-screen-options-toggle" aria-expanded="false">
					<?php _e( 'Menu Options' ); ?>
				</button>

			<# if ( data.description ) { #>

{{{ data.description }}}

			<# } #>

				<?php $this->render_screen_options(); ?>

		<?php
		// NOTE: The following is a workaround for an inability to treat (and thus label) a list of sections as a whole.
		?>

<?php _e( 'Menus' ); ?>

		<?php
	}
}


<?php
/**
 * Customize API: WP_Customize_New_Menu_Control class
 *
 * @package WordPress
 * @subpackage Customize
 * @since 4.4.0
 * @deprecated 4.9.0 This file is no longer used as of the menu creation UX introduced in #40104.
 */

_deprecated_file( basename( __FILE__ ), '4.9.0' );

/**
 * Customize control class for new menus.
 *
 * @since 4.3.0
 * @deprecated 4.9.0 This class is no longer used as of the menu creation UX introduced in #40104.
 *
 * @see WP_Customize_Control
 */
class WP_Customize_New_Menu_Control extends WP_Customize_Control {

	/**
	 * Control type.
	 *
	 * @since 4.3.0
	 * @var string
	 */
	public $type = 'new_menu';

	/**
	 * Constructor.
	 *
	 * @since 4.9.0
	 * @deprecated 4.9.0
	 *
	 * @see WP_Customize_Control::__construct()
	 *
	 * @param WP_Customize_Manager $manager Customizer bootstrap instance.
	 * @param string               $id      The control ID.
	 * @param array                $args    Optional. Arguments to override class property defaults.
	 *                                      See WP_Customize_Control::__construct() for information
	 *                                      on accepted arguments. Default empty array.
	 */
	public function __construct( WP_Customize_Manager $manager, $id, array $args = array() ) {
		_deprecated_function( __METHOD__, '4.9.0' );
		parent::__construct( $manager, $id, $args );
	}

	/**
	 * Render the control's content.
	 *
	 * @since 4.3.0
	 * @deprecated 4.9.0
	 */
	public function render_content() {
		_deprecated_function( __METHOD__, '4.9.0' );
		?>
		<button type="button" class="button button-primary" id="create-new-menu-submit"><?php _e( 'Create Menu' ); ?></button>

		<?php
	}
}


<?php
/**
 * Customize API: WP_Customize_New_Menu_Section class
 *
 * @package WordPress
 * @subpackage Customize
 * @since 4.4.0
 * @deprecated 4.9.0 This file is no longer used as of the menu creation UX introduced in #40104.
 */

_deprecated_file( basename( __FILE__ ), '4.9.0' );

/**
 * Customize Menu Section Class
 *
 * @since 4.3.0
 * @deprecated 4.9.0 This class is no longer used as of the menu creation UX introduced in #40104.
 *
 * @see WP_Customize_Section
 */
class WP_Customize_New_Menu_Section extends WP_Customize_Section {

	/**
	 * Control type.
	 *
	 * @since 4.3.0
	 * @var string
	 */
	public $type = 'new_menu';

	/**
	 * Constructor.
	 *
	 * Any supplied $args override class property defaults.
	 *
	 * @since 4.9.0
	 * @deprecated 4.9.0
	 *
	 * @param WP_Customize_Manager $manager Customizer bootstrap instance.
	 * @param string               $id      A specific ID of the section.
	 * @param array                $args    Section arguments.
	 */
	public function __construct( WP_Customize_Manager $manager, $id, array $args = array() ) {
		_deprecated_function( __METHOD__, '4.9.0' );
		parent::__construct( $manager, $id, $args );
	}

	/**
	 * Render the section, and the controls that have been added to it.
	 *
	 * @since 4.3.0
	 * @deprecated 4.9.0
	 */
	protected function render() {
		_deprecated_function( __METHOD__, '4.9.0' );
		?>
		<li id="accordion-section-<?php echo esc_attr( $this->id ); ?>" class="accordion-section-new-menu">
			<button type="button" class="button add-new-menu-item add-menu-toggle" aria-expanded="false">
				<?php echo esc_html( $this->title ); ?>
			</button>

		<?php
	}
}


<?php
/**
 * Customize API: WP_Customize_Partial class
 *
 * @package WordPress
 * @subpackage Customize
 * @since 4.5.0
 */

/**
 * Core Customizer class for implementing selective refresh partials.
 *
 * Representation of a rendered region in the previewed page that gets
 * selectively refreshed when an associated setting is changed.
 * This class is analogous of WP_Customize_Control.
 *
 * @since 4.5.0
 */
class WP_Customize_Partial {

	/**
	 * Component.
	 *
	 * @since 4.5.0
	 * @var WP_Customize_Selective_Refresh
	 */
	public $component;

	/**
	 * Unique identifier for the partial.
	 *
	 * If the partial is used to display a single setting, this would generally
	 * be the same as the associated setting's ID.
	 *
	 * @since 4.5.0
	 * @var string
	 */
	public $id;

	/**
	 * Parsed ID.
	 *
	 * @since 4.5.0
	 * @var array {
	 *     @type string $base ID base.
	 *     @type array  $keys Keys for multidimensional.
	 * }
	 */
	protected $id_data = array();

	/**
	 * Type of this partial.
	 *
	 * @since 4.5.0
	 * @var string
	 */
	public $type = 'default';

	/**
	 * The jQuery selector to find the container element for the partial.
	 *
	 * @since 4.5.0
	 * @var string
	 */
	public $selector;

	/**
	 * IDs for settings tied to the partial.
	 *
	 * @since 4.5.0
	 * @var string[]
	 */
	public $settings;

	/**
	 * The ID for the setting that this partial is primarily responsible for rendering.
	 *
	 * If not supplied, it will default to the ID of the first setting.
	 *
	 * @since 4.5.0
	 * @var string
	 */
	public $primary_setting;

	/**
	 * Capability required to edit this partial.
	 *
	 * Normally this is empty and the capability is derived from the capabilities
	 * of the associated `$settings`.
	 *
	 * @since 4.5.0
	 * @var string
	 */
	public $capability;

	/**
	 * Render callback.
	 *
	 * @since 4.5.0
	 *
	 * @see WP_Customize_Partial::render()
	 * @var callable Callback is called with one argument, the instance of
	 *               WP_Customize_Partial. The callback can either echo the
	 *               partial or return the partial as a string, or return false if error.
	 */
	public $render_callback;

	/**
	 * Whether the container element is included in the partial, or if only the contents are rendered.
	 *
	 * @since 4.5.0
	 * @var bool
	 */
	public $container_inclusive = false;

	/**
	 * Whether to refresh the entire preview in case a partial cannot be refreshed.
	 *
	 * A partial render is considered a failure if the render_callback returns false.
	 *
	 * @since 4.5.0
	 * @var bool
	 */
	public $fallback_refresh = true;

	/**
	 * Constructor.
	 *
	 * Supplied `$args` override class property defaults.
	 *
	 * If `$args['settings']` is not defined, use the $id as the setting ID.
	 *
	 * @since 4.5.0
	 *
	 * @param WP_Customize_Selective_Refresh $component Customize Partial Refresh plugin instance.
	 * @param string                         $id        Control ID.
	 * @param array                          $args {
	 *     Optional. Array of properties for the new Partials object. Default empty array.
	 *
	 *     @type string   $type                  Type of the partial to be created.
	 *     @type string   $selector              The jQuery selector to find the container element for the partial, that is,
	 *                                           a partial's placement.
	 *     @type string[] $settings              IDs for settings tied to the partial. If undefined, `$id` will be used.
	 *     @type string   $primary_setting       The ID for the setting that this partial is primarily responsible for
	 *                                           rendering. If not supplied, it will default to the ID of the first setting.
	 *     @type string   $capability            Capability required to edit this partial.
	 *                                           Normally this is empty and the capability is derived from the capabilities
	 *                                           of the associated `$settings`.
	 *     @type callable $render_callback       Render callback.
	 *                                           Callback is called with one argument, the instance of WP_Customize_Partial.
	 *                                           The callback can either echo the partial or return the partial as a string,
	 *                                           or return false if error.
	 *     @type bool     $container_inclusive   Whether the container element is included in the partial, or if only
	 *                                           the contents are rendered.
	 *     @type bool     $fallback_refresh      Whether to refresh the entire preview in case a partial cannot be refreshed.
	 *                                           A partial render is considered a failure if the render_callback returns
	 *                                           false.
	 * }
	 */
	public function __construct( WP_Customize_Selective_Refresh $component, $id, $args = array() ) {
		$keys = array_keys( get_object_vars( $this ) );
		foreach ( $keys as $key ) {
			if ( isset( $args[ $key ] ) ) {
				$this->$key = $args[ $key ];
			}
		}

		$this->component       = $component;
		$this->id              = $id;
		$this->id_data['keys'] = preg_split( '/\[/', str_replace( ']', '', $this->id ) );
		$this->id_data['base'] = array_shift( $this->id_data['keys'] );

		if ( empty( $this->render_callback ) ) {
			$this->render_callback = array( $this, 'render_callback' );
		}

		// Process settings.
		if ( ! isset( $this->settings ) ) {
			$this->settings = array( $id );
		} elseif ( is_string( $this->settings ) ) {
			$this->settings = array( $this->settings );
		}

		if ( empty( $this->primary_setting ) ) {
			$this->primary_setting = current( $this->settings );
		}
	}

	/**
	 * Retrieves parsed ID data for multidimensional setting.
	 *
	 * @since 4.5.0
	 *
	 * @return array {
	 *     ID data for multidimensional partial.
	 *
	 *     @type string $base ID base.
	 *     @type array  $keys Keys for multidimensional array.
	 * }
	 */
	final public function id_data() {
		return $this->id_data;
	}

	/**
	 * Renders the template partial involving the associated settings.
	 *
	 * @since 4.5.0
	 *
	 * @param array $container_context Optional. Array of context data associated with the target container (placement).
	 *                                 Default empty array.
	 * @return string|array|false The rendered partial as a string, raw data array (for client-side JS template),
	 *                            or false if no render applied.
	 */
	final public function render( $container_context = array() ) {
		$partial  = $this;
		$rendered = false;

		if ( ! empty( $this->render_callback ) ) {
			ob_start();
			$return_render = call_user_func( $this->render_callback, $this, $container_context );
			$ob_render     = ob_get_clean();

			if ( null !== $return_render && '' !== $ob_render ) {
				_doing_it_wrong( __FUNCTION__, __( 'Partial render must echo the content or return the content string (or array), but not both.' ), '4.5.0' );
			}

			/*
			 * Note that the string return takes precedence because the $ob_render may just\
			 * include PHP warnings or notices.
			 */
			$rendered = null !== $return_render ? $return_render : $ob_render;
		}

		/**
		 * Filters partial rendering.
		 *
		 * @since 4.5.0
		 *
		 * @param string|array|false   $rendered          The partial value. Default false.
		 * @param WP_Customize_Partial $partial           WP_Customize_Setting instance.
		 * @param array                $container_context Optional array of context data associated with
		 *                                                the target container.
		 */
		$rendered = apply_filters( 'customize_partial_render', $rendered, $partial, $container_context );

		/**
		 * Filters partial rendering for a specific partial.
		 *
		 * The dynamic portion of the hook name, `$partial->ID` refers to the partial ID.
		 *
		 * @since 4.5.0
		 *
		 * @param string|array|false   $rendered          The partial value. Default false.
		 * @param WP_Customize_Partial $partial           WP_Customize_Setting instance.
		 * @param array                $container_context Optional array of context data associated with
		 *                                                the target container.
		 */
		$rendered = apply_filters( "customize_partial_render_{$partial->id}", $rendered, $partial, $container_context );

		return $rendered;
	}

	/**
	 * Default callback used when invoking WP_Customize_Control::render().
	 *
	 * Note that this method may echo the partial *or* return the partial as
	 * a string or array, but not both. Output buffering is performed when this
	 * is called. Subclasses can override this with their specific logic, or they
	 * may provide an 'render_callback' argument to the constructor.
	 *
	 * This method may return an HTML string for straight DOM injection, or it
	 * may return an array for supporting Partial JS subclasses to render by
	 * applying to client-side templating.
	 *
	 * @since 4.5.0
	 *
	 * @param WP_Customize_Partial $partial Partial.
	 * @param array                $context Context.
	 * @return string|array|false
	 */
	public function render_callback( WP_Customize_Partial $partial, $context = array() ) {
		unset( $partial, $context );
		return false;
	}

	/**
	 * Retrieves the data to export to the client via JSON.
	 *
	 * @since 4.5.0
	 *
	 * @return array Array of parameters passed to the JavaScript.
	 */
	public function json() {
		$exports = array(
			'settings'           => $this->settings,
			'primarySetting'     => $this->primary_setting,
			'selector'           => $this->selector,
			'type'               => $this->type,
			'fallbackRefresh'    => $this->fallback_refresh,
			'containerInclusive' => $this->container_inclusive,
		);
		return $exports;
	}

	/**
	 * Checks if the user can refresh this partial.
	 *
	 * Returns false if the user cannot manipulate one of the associated settings,
	 * or if one of the associated settings does not exist.
	 *
	 * @since 4.5.0
	 *
	 * @return bool False if user can't edit one of the related settings,
	 *                    or if one of the associated settings does not exist.
	 */
	final public function check_capabilities() {
		if ( ! empty( $this->capability ) && ! current_user_can( $this->capability ) ) {
			return false;
		}
		foreach ( $this->settings as $setting_id ) {
			$setting = $this->component->manager->get_setting( $setting_id );
			if ( ! $setting || ! $setting->check_capabilities() ) {
				return false;
			}
		}
		return true;
	}
}


<?php
/**
 * Customize API: WP_Customize_Selective_Refresh class
 *
 * @package WordPress
 * @subpackage Customize
 * @since 4.5.0
 */

/**
 * Core Customizer class for implementing selective refresh.
 *
 * @since 4.5.0
 */
final class WP_Customize_Selective_Refresh {

	/**
	 * Query var used in requests to render partials.
	 *
	 * @since 4.5.0
	 */
	const RENDER_QUERY_VAR = 'wp_customize_render_partials';

	/**
	 * Customize manager.
	 *
	 * @since 4.5.0
	 * @var WP_Customize_Manager
	 */
	public $manager;

	/**
	 * Registered instances of WP_Customize_Partial.
	 *
	 * @since 4.5.0
	 * @var WP_Customize_Partial[]
	 */
	protected $partials = array();

	/**
	 * Log of errors triggered when partials are rendered.
	 *
	 * @since 4.5.0
	 * @var array
	 */
	protected $triggered_errors = array();

	/**
	 * Keep track of the current partial being rendered.
	 *
	 * @since 4.5.0
	 * @var string|null
	 */
	protected $current_partial_id;

	/**
	 * Plugin bootstrap for Partial Refresh functionality.
	 *
	 * @since 4.5.0
	 *
	 * @param WP_Customize_Manager $manager Customizer bootstrap instance.
	 */
	public function __construct( WP_Customize_Manager $manager ) {
		$this->manager = $manager;
		require_once ABSPATH . WPINC . '/customize/class-wp-customize-partial.php';

		add_action( 'customize_preview_init', array( $this, 'init_preview' ) );
	}

	/**
	 * Retrieves the registered partials.
	 *
	 * @since 4.5.0
	 *
	 * @return array Partials.
	 */
	public function partials() {
		return $this->partials;
	}

	/**
	 * Adds a partial.
	 *
	 * @since 4.5.0
	 *
	 * @see WP_Customize_Partial::__construct()
	 *
	 * @param WP_Customize_Partial|string $id   Customize Partial object, or Partial ID.
	 * @param array                       $args Optional. Array of properties for the new Partials object.
	 *                                          See WP_Customize_Partial::__construct() for information
	 *                                          on accepted arguments. Default empty array.
	 * @return WP_Customize_Partial The instance of the partial that was added.
	 */
	public function add_partial( $id, $args = array() ) {
		if ( $id instanceof WP_Customize_Partial ) {
			$partial = $id;
		} else {
			$class = 'WP_Customize_Partial';

			/** This filter is documented in wp-includes/customize/class-wp-customize-selective-refresh.php */
			$args = apply_filters( 'customize_dynamic_partial_args', $args, $id );

			/** This filter is documented in wp-includes/customize/class-wp-customize-selective-refresh.php */
			$class = apply_filters( 'customize_dynamic_partial_class', $class, $id, $args );

			$partial = new $class( $this, $id, $args );
		}

		$this->partials[ $partial->id ] = $partial;
		return $partial;
	}

	/**
	 * Retrieves a partial.
	 *
	 * @since 4.5.0
	 *
	 * @param string $id Customize Partial ID.
	 * @return WP_Customize_Partial|null The partial, if set. Otherwise null.
	 */
	public function get_partial( $id ) {
		if ( isset( $this->partials[ $id ] ) ) {
			return $this->partials[ $id ];
		} else {
			return null;
		}
	}

	/**
	 * Removes a partial.
	 *
	 * @since 4.5.0
	 *
	 * @param string $id Customize Partial ID.
	 */
	public function remove_partial( $id ) {
		unset( $this->partials[ $id ] );
	}

	/**
	 * Initializes the Customizer preview.
	 *
	 * @since 4.5.0
	 */
	public function init_preview() {
		add_action( 'template_redirect', array( $this, 'handle_render_partials_request' ) );
		add_action( 'wp_enqueue_scripts', array( $this, 'enqueue_preview_scripts' ) );
	}

	/**
	 * Enqueues preview scripts.
	 *
	 * @since 4.5.0
	 */
	public function enqueue_preview_scripts() {
		wp_enqueue_script( 'customize-selective-refresh' );
		add_action( 'wp_footer', array( $this, 'export_preview_data' ), 1000 );
	}

	/**
	 * Exports data in preview after it has finished rendering so that partials can be added at runtime.
	 *
	 * @since 4.5.0
	 */
	public function export_preview_data() {
		$partials = array();

		foreach ( $this->partials() as $partial ) {
			if ( $partial->check_capabilities() ) {
				$partials[ $partial->id ] = $partial->json();
			}
		}

		$switched_locale = switch_to_locale( get_user_locale() );
		$l10n            = array(
			'shiftClickToEdit' => __( 'Shift-click to edit this element.' ),
			'clickEditMenu'    => __( 'Click to edit this menu.' ),
			'clickEditWidget'  => __( 'Click to edit this widget.' ),
			'clickEditTitle'   => __( 'Click to edit the site title.' ),
			'clickEditMisc'    => __( 'Click to edit this element.' ),
			/* translators: %s: document.write() */
			'badDocumentWrite' => sprintf( __( '%s is forbidden' ), 'document.write()' ),
		);
		if ( $switched_locale ) {
			restore_previous_locale();
		}

		$exports = array(
			'partials'       => $partials,
			'renderQueryVar' => self::RENDER_QUERY_VAR,
			'l10n'           => $l10n,
		);

		// Export data to JS.
		printf( '<script>var _customizePartialRefreshExports = %s;</script>', wp_json_encode( $exports ) );
	}

	/**
	 * Registers dynamically-created partials.
	 *
	 * @since 4.5.0
	 *
	 * @see WP_Customize_Manager::add_dynamic_settings()
	 *
	 * @param string[] $partial_ids Array of the partial IDs to add.
	 * @return WP_Customize_Partial[] Array of added WP_Customize_Partial instances.
	 */
	public function add_dynamic_partials( $partial_ids ) {
		$new_partials = array();

		foreach ( $partial_ids as $partial_id ) {

			// Skip partials already created.
			$partial = $this->get_partial( $partial_id );
			if ( $partial ) {
				continue;
			}

			$partial_args  = false;
			$partial_class = 'WP_Customize_Partial';

			/**
			 * Filters a dynamic partial's constructor arguments.
			 *
			 * For a dynamic partial to be registered, this filter must be employed
			 * to override the default false value with an array of args to pass to
			 * the WP_Customize_Partial constructor.
			 *
			 * @since 4.5.0
			 *
			 * @param false|array $partial_args The arguments to the WP_Customize_Partial constructor.
			 * @param string      $partial_id   ID for dynamic partial.
			 */
			$partial_args = apply_filters( 'customize_dynamic_partial_args', $partial_args, $partial_id );
			if ( false === $partial_args ) {
				continue;
			}

			/**
			 * Filters the class used to construct partials.
			 *
			 * Allow non-statically created partials to be constructed with custom WP_Customize_Partial subclass.
			 *
			 * @since 4.5.0
			 *
			 * @param string $partial_class WP_Customize_Partial or a subclass.
			 * @param string $partial_id    ID for dynamic partial.
			 * @param array  $partial_args  The arguments to the WP_Customize_Partial constructor.
			 */
			$partial_class = apply_filters( 'customize_dynamic_partial_class', $partial_class, $partial_id, $partial_args );

			$partial = new $partial_class( $this, $partial_id, $partial_args );

			$this->add_partial( $partial );
			$new_partials[] = $partial;
		}
		return $new_partials;
	}

	/**
	 * Checks whether the request is for rendering partials.
	 *
	 * Note that this will not consider whether the request is authorized or valid,
	 * just that essentially the route is a match.
	 *
	 * @since 4.5.0
	 *
	 * @return bool Whether the request is for rendering partials.
	 */
	public function is_render_partials_request() {
		return ! empty( $_POST[ self::RENDER_QUERY_VAR ] );
	}

	/**
	 * Handles PHP errors triggered during rendering the partials.
	 *
	 * These errors will be relayed back to the client in the Ajax response.
	 *
	 * @since 4.5.0
	 *
	 * @param int    $errno   Error number.
	 * @param string $errstr  Error string.
	 * @param string $errfile Error file.
	 * @param string $errline Error line.
	 * @return true Always true.
	 */
	public function handle_error( $errno, $errstr, $errfile = null, $errline = null ) {
		$this->triggered_errors[] = array(
			'partial'      => $this->current_partial_id,
			'error_number' => $errno,
			'error_string' => $errstr,
			'error_file'   => $errfile,
			'error_line'   => $errline,
		);
		return true;
	}

	/**
	 * Handles the Ajax request to return the rendered partials for the requested placements.
	 *
	 * @since 4.5.0
	 */
	public function handle_render_partials_request() {
		if ( ! $this->is_render_partials_request() ) {
			return;
		}

		/*
		 * Note that is_customize_preview() returning true will entail that the
		 * user passed the 'customize' capability check and the nonce check, since
		 * WP_Customize_Manager::setup_theme() is where the previewing flag is set.
		 */
		if ( ! is_customize_preview() ) {
			wp_send_json_error( 'expected_customize_preview', 403 );
		} elseif ( ! isset( $_POST['partials'] ) ) {
			wp_send_json_error( 'missing_partials', 400 );
		}

		// Ensure that doing selective refresh on 404 template doesn't result in fallback rendering behavior (full refreshes).
		status_header( 200 );

		$partials = json_decode( wp_unslash( $_POST['partials'] ), true );

		if ( ! is_array( $partials ) ) {
			wp_send_json_error( 'malformed_partials' );
		}

		$this->add_dynamic_partials( array_keys( $partials ) );

		/**
		 * Fires immediately before partials are rendered.
		 *
		 * Plugins may do things like call wp_enqueue_scripts() and gather a list of the scripts
		 * and styles which may get enqueued in the response.
		 *
		 * @since 4.5.0
		 *
		 * @param WP_Customize_Selective_Refresh $this     Selective refresh component.
		 * @param array                          $partials Placements' context data for the partials rendered in the request.
		 *                                                 The array is keyed by partial ID, with each item being an array of
		 *                                                 the placements' context data.
		 */
		do_action( 'customize_render_partials_before', $this, $partials );

		set_error_handler( array( $this, 'handle_error' ), error_reporting() );

		$contents = array();

		foreach ( $partials as $partial_id => $container_contexts ) {
			$this->current_partial_id = $partial_id;

			if ( ! is_array( $container_contexts ) ) {
				wp_send_json_error( 'malformed_container_contexts' );
			}

			$partial = $this->get_partial( $partial_id );

			if ( ! $partial || ! $partial->check_capabilities() ) {
				$contents[ $partial_id ] = null;
				continue;
			}

			$contents[ $partial_id ] = array();

			// @todo The array should include not only the contents, but also whether the container is included?
			if ( empty( $container_contexts ) ) {
				// Since there are no container contexts, render just once.
				$contents[ $partial_id ][] = $partial->render( null );
			} else {
				foreach ( $container_contexts as $container_context ) {
					$contents[ $partial_id ][] = $partial->render( $container_context );
				}
			}
		}
		$this->current_partial_id = null;

		restore_error_handler();

		/**
		 * Fires immediately after partials are rendered.
		 *
		 * Plugins may do things like call wp_footer() to scrape scripts output and return them
		 * via the {@see 'customize_render_partials_response'} filter.
		 *
		 * @since 4.5.0
		 *
		 * @param WP_Customize_Selective_Refresh $this     Selective refresh component.
		 * @param array                          $partials Placements' context data for the partials rendered in the request.
		 *                                                 The array is keyed by partial ID, with each item being an array of
		 *                                                 the placements' context data.
		 */
		do_action( 'customize_render_partials_after', $this, $partials );

		$response = array(
			'contents' => $contents,
		);

		if ( defined( 'WP_DEBUG_DISPLAY' ) && WP_DEBUG_DISPLAY ) {
			$response['errors'] = $this->triggered_errors;
		}

		$setting_validities             = $this->manager->validate_setting_values( $this->manager->unsanitized_post_values() );
		$exported_setting_validities    = array_map( array( $this->manager, 'prepare_setting_validity_for_js' ), $setting_validities );
		$response['setting_validities'] = $exported_setting_validities;

		/**
		 * Filters the response from rendering the partials.
		 *
		 * Plugins may use this filter to inject `$scripts` and `$styles`, which are dependencies
		 * for the partials being rendered. The response data will be available to the client via
		 * the `render-partials-response` JS event, so the client can then inject the scripts and
		 * styles into the DOM if they have not already been enqueued there.
		 *
		 * If plugins do this, they'll need to take care for any scripts that do `document.write()`
		 * and make sure that these are not injected, or else to override the function to no-op,
		 * or else the page will be destroyed.
		 *
		 * Plugins should be aware that `$scripts` and `$styles` may eventually be included by
		 * default in the response.
		 *
		 * @since 4.5.0
		 *
		 * @param array $response {
		 *     Response.
		 *
		 *     @type array $contents Associative array mapping a partial ID its corresponding array of contents
		 *                           for the containers requested.
		 *     @type array $errors   List of errors triggered during rendering of partials, if `WP_DEBUG_DISPLAY`
		 *                           is enabled.
		 * }
		 * @param WP_Customize_Selective_Refresh $this     Selective refresh component.
		 * @param array                          $partials Placements' context data for the partials rendered in the request.
		 *                                                 The array is keyed by partial ID, with each item being an array of
		 *                                                 the placements' context data.
		 */
		$response = apply_filters( 'customize_render_partials_response', $response, $this, $partials );

		wp_send_json_success( $response );
	}
}


<?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 );
	}
}


<?php
/**
 * Customize API: WP_Customize_Site_Icon_Control class
 *
 * @package WordPress
 * @subpackage Customize
 * @since 4.4.0
 */

/**
 * Customize Site Icon control class.
 *
 * Used only for custom functionality in JavaScript.
 *
 * @since 4.3.0
 *
 * @see WP_Customize_Cropped_Image_Control
 */
class WP_Customize_Site_Icon_Control extends WP_Customize_Cropped_Image_Control {

	/**
	 * Control type.
	 *
	 * @since 4.3.0
	 * @var string
	 */
	public $type = 'site_icon';

	/**
	 * Constructor.
	 *
	 * @since 4.3.0
	 *
	 * @see WP_Customize_Control::__construct()
	 *
	 * @param WP_Customize_Manager $manager Customizer bootstrap instance.
	 * @param string               $id      Control ID.
	 * @param array                $args    Optional. Arguments to override class property defaults.
	 *                                      See WP_Customize_Control::__construct() for information
	 *                                      on accepted arguments. Default empty array.
	 */
	public function __construct( $manager, $id, $args = array() ) {
		parent::__construct( $manager, $id, $args );
		add_action( 'customize_controls_print_styles', 'wp_site_icon', 99 );
	}

	/**
	 * Renders a JS template for the content of the site icon control.
	 *
	 * @since 4.5.0
	 */
	public function content_template() {
		?>
		<# if ( data.label ) { #>
			{{ data.label }}
		<# } #>
		<# if ( data.description ) { #>
			{{{ data.description }}}
		<# } #>

		<# if ( data.attachment && data.attachment.id ) { #>

				<# if ( data.attachment.sizes ) { #>

							<img src="<?php echo esc_url( admin_url( 'images/' . ( is_rtl() ? 'browser-rtl.png' : 'browser.png' ) ) ); ?>" class="browser-preview" width="182" alt="" />

								<img src="{{ data.attachment.sizes.full ? data.attachment.sizes.full.url : data.attachment.url }}" alt="<?php esc_attr_e( 'Preview as a browser icon' ); ?>"/>

							<# print( '<?php bloginfo( 'name' ); ?>' ) #>

						<img class="app-icon-preview" src="{{ data.attachment.sizes.full ? data.attachment.sizes.full.url : data.attachment.url }}" alt="<?php esc_attr_e( 'Preview as an app icon' ); ?>"/>

				<# } #>

					<# if ( data.canUpload ) { #>
						<button type="button" class="button remove-button"><?php echo $this->button_labels['remove']; ?></button>
						<button type="button" class="button upload-button"><?php echo $this->button_labels['change']; ?></button>
					<# } #>

		<# } else { #>

				<# if ( data.canUpload ) { #>
					<button type="button" class="upload-button button-add-media"><?php echo $this->button_labels['site_icon']; ?></button>
				<# } #>

					<# if ( data.defaultAttachment ) { #>
						<button type="button" class="button default-button"><?php echo $this->button_labels['default']; ?></button>
					<# } #>

		<# } #>
		<?php
	}
}


<?php
/**
 * Customize API: WP_Customize_Theme_Control class
 *
 * @package WordPress
 * @subpackage Customize
 * @since 4.4.0
 */

/**
 * Customize Theme Control class.
 *
 * @since 4.2.0
 *
 * @see WP_Customize_Control
 */
class WP_Customize_Theme_Control extends WP_Customize_Control {

	/**
	 * Customize control type.
	 *
	 * @since 4.2.0
	 * @var string
	 */
	public $type = 'theme';

	/**
	 * Theme object.
	 *
	 * @since 4.2.0
	 * @var WP_Theme
	 */
	public $theme;

	/**
	 * Refresh the parameters passed to the JavaScript via JSON.
	 *
	 * @since 4.2.0
	 *
	 * @see WP_Customize_Control::to_json()
	 */
	public function to_json() {
		parent::to_json();
		$this->json['theme'] = $this->theme;
	}

	/**
	 * Don't render the control content from PHP, as it's rendered via JS on load.
	 *
	 * @since 4.2.0
	 */
	public function render_content() {}

	/**
	 * Render a JS template for theme display.
	 *
	 * @since 4.2.0
	 */
	public function content_template() {
		/* translators: %s: Theme name. */
		$details_label = sprintf( __( 'Details for theme: %s' ), '{{ data.theme.name }}' );
		/* translators: %s: Theme name. */
		$customize_label = sprintf( __( 'Customize theme: %s' ), '{{ data.theme.name }}' );
		/* translators: %s: Theme name. */
		$preview_label = sprintf( __( 'Live preview theme: %s' ), '{{ data.theme.name }}' );
		/* translators: %s: Theme name. */
		$install_label = sprintf( __( 'Install and preview theme: %s' ), '{{ data.theme.name }}' );
		?>
		<# if ( data.theme.active ) { #>

		<# } else { #>

		<# } #>

			<# if ( data.theme.screenshot && data.theme.screenshot[0] ) { #>

			<# } else { #>

			<# } #>

			<span class="more-details theme-details" id="{{ data.section }}-{{ data.theme.id }}-action" aria-label="<?php echo esc_attr( $details_label ); ?>"><?php _e( 'Theme Details' ); ?>

			<?php
				/* translators: Theme author name. */
				printf( _x( 'By %s', 'theme author' ), '{{ data.theme.author }}' );
			?>

			<# if ( 'installed' === data.theme.type && data.theme.hasUpdate ) { #>
				<# if ( data.theme.updateResponse.compatibleWP && data.theme.updateResponse.compatiblePHP ) { #>

							<?php
							if ( is_multisite() ) {
								_e( 'New version available.' );
							} else {
								printf(
									/* translators: %s: "Update now" button. */
									__( 'New version available. %s' ),
									'<button class="button-link update-theme" type="button">' . __( 'Update now' ) . '</button>'
								);
							}
							?>

				<# } else { #>

							<# if ( ! data.theme.updateResponse.compatibleWP && ! data.theme.updateResponse.compatiblePHP ) { #>
								<?php
								printf(
									/* translators: %s: Theme name. */
									__( 'There is a new version of %s available, but it doesn’t work with your versions of WordPress and PHP.' ),
									'{{{ data.theme.name }}}'
								);
								if ( current_user_can( 'update_core' ) && current_user_can( 'update_php' ) ) {
									printf(
										/* translators: 1: URL to WordPress Updates screen, 2: URL to Update PHP page. */
										' ' . __( 'Please update WordPress, and then learn more about updating PHP.' ),
										self_admin_url( 'update-core.php' ),
										esc_url( wp_get_update_php_url() )
									);
									wp_update_php_annotation( '

', '' );
								} elseif ( current_user_can( 'update_core' ) ) {
									printf(
										/* translators: %s: URL to WordPress Updates screen. */
										' ' . __( 'Please update WordPress.' ),
										self_admin_url( 'update-core.php' )
									);
								} elseif ( current_user_can( 'update_php' ) ) {
									printf(
										/* translators: %s: URL to Update PHP page. */
										' ' . __( 'Learn more about updating PHP.' ),
										esc_url( wp_get_update_php_url() )
									);
									wp_update_php_annotation( '

', '' );
								}
								?>
							<# } else if ( ! data.theme.updateResponse.compatibleWP ) { #>
								<?php
								printf(
									/* translators: %s: Theme name. */
									__( 'There is a new version of %s available, but it doesn’t work with your version of WordPress.' ),
									'{{{ data.theme.name }}}'
								);
								if ( current_user_can( 'update_core' ) ) {
									printf(
										/* translators: %s: URL to WordPress Updates screen. */
										' ' . __( 'Please update WordPress.' ),
										self_admin_url( 'update-core.php' )
									);
								}
								?>
							<# } else if ( ! data.theme.updateResponse.compatiblePHP ) { #>
								<?php
								printf(
									/* translators: %s: Theme name. */
									__( 'There is a new version of %s available, but it doesn’t work with your version of PHP.' ),
									'{{{ data.theme.name }}}'
								);
								if ( current_user_can( 'update_php' ) ) {
									printf(
										/* translators: %s: URL to Update PHP page. */
										' ' . __( 'Learn more about updating PHP.' ),
										esc_url( wp_get_update_php_url() )
									);
									wp_update_php_annotation( '

', '' );
								}
								?>
							<# } #>

				<# } #>
			<# } #>

			<# if ( ! data.theme.compatibleWP || ! data.theme.compatiblePHP ) { #>

					<# if ( ! data.theme.compatibleWP && ! data.theme.compatiblePHP ) { #>
						<?php
						_e( 'This theme doesn’t work with your versions of WordPress and PHP.' );
						if ( current_user_can( 'update_core' ) && current_user_can( 'update_php' ) ) {
							printf(
								/* translators: 1: URL to WordPress Updates screen, 2: URL to Update PHP page. */
								' ' . __( 'Please update WordPress, and then learn more about updating PHP.' ),
								self_admin_url( 'update-core.php' ),
								esc_url( wp_get_update_php_url() )
							);
							wp_update_php_annotation( '

', '' );
						} elseif ( current_user_can( 'update_core' ) ) {
							printf(
								/* translators: %s: URL to WordPress Updates screen. */
								' ' . __( 'Please update WordPress.' ),
								self_admin_url( 'update-core.php' )
							);
						} elseif ( current_user_can( 'update_php' ) ) {
							printf(
								/* translators: %s: URL to Update PHP page. */
								' ' . __( 'Learn more about updating PHP.' ),
								esc_url( wp_get_update_php_url() )
							);
							wp_update_php_annotation( '

', '' );
						}
						?>
					<# } else if ( ! data.theme.compatibleWP ) { #>
						<?php
						_e( 'This theme doesn’t work with your version of WordPress.' );
						if ( current_user_can( 'update_core' ) ) {
							printf(
								/* translators: %s: URL to WordPress Updates screen. */
								' ' . __( 'Please update WordPress.' ),
								self_admin_url( 'update-core.php' )
							);
						}
						?>
					<# } else if ( ! data.theme.compatiblePHP ) { #>
						<?php
						_e( 'This theme doesn’t work with your version of PHP.' );
						if ( current_user_can( 'update_php' ) ) {
							printf(
								/* translators: %s: URL to Update PHP page. */
								' ' . __( 'Learn more about updating PHP.' ),
								esc_url( wp_get_update_php_url() )
							);
							wp_update_php_annotation( '

', '' );
						}
						?>
					<# } #>

			<# } #>

			<# if ( data.theme.active ) { #>

						<?php _ex( 'Previewing:', 'theme' ); ?> {{ data.theme.name }}

						<button type="button" class="button button-primary customize-theme" aria-label="<?php echo esc_attr( $customize_label ); ?>"><?php _e( 'Customize' ); ?></button>

<?php _ex( 'Installed', 'theme' ); ?>

			<# } else if ( 'installed' === data.theme.type ) { #>

{{ data.theme.name }}

						<# if ( data.theme.compatibleWP && data.theme.compatiblePHP ) { #>
							<button type="button" class="button button-primary preview-theme" aria-label="<?php echo esc_attr( $preview_label ); ?>" data-slug="{{ data.theme.id }}"><?php _e( 'Live Preview' ); ?></button>
						<# } else { #>
							<button type="button" class="button button-primary disabled" aria-label="<?php echo esc_attr( $preview_label ); ?>"><?php _e( 'Live Preview' ); ?></button>
						<# } #>

<?php _ex( 'Installed', 'theme' ); ?>

			<# } else { #>

{{ data.theme.name }}

						<# if ( data.theme.compatibleWP && data.theme.compatiblePHP ) { #>
							<button type="button" class="button button-primary theme-install preview" aria-label="<?php echo esc_attr( $install_label ); ?>" data-slug="{{ data.theme.id }}" data-name="{{ data.theme.name }}"><?php _e( 'Install & Preview' ); ?></button>
						<# } else { #>
							<button type="button" class="button button-primary disabled" aria-label="<?php echo esc_attr( $install_label ); ?>" disabled><?php _e( 'Install & Preview' ); ?></button>
						<# } #>

			<# } #>

		<?php
	}
}


<?php
/**
 * Customize API: WP_Customize_Themes_Panel class
 *
 * @package WordPress
 * @subpackage Customize
 * @since 4.9.0
 */

/**
 * Customize Themes Panel Class
 *
 * @since 4.9.0
 *
 * @see WP_Customize_Panel
 */
class WP_Customize_Themes_Panel extends WP_Customize_Panel {

	/**
	 * Panel type.
	 *
	 * @since 4.9.0
	 * @var string
	 */
	public $type = 'themes';

	/**
	 * An Underscore (JS) template for rendering this panel's container.
	 *
	 * The themes panel renders a custom panel heading with the current theme and a switch themes button.
	 *
	 * @see WP_Customize_Panel::print_template()
	 *
	 * @since 4.9.0
	 */
	protected function render_template() {
		?>

				<?php
				if ( $this->manager->is_theme_active() ) {
					echo '' . __( 'Active theme' ) . ' {{ data.title }}';
				} else {
					echo '' . __( 'Previewing theme' ) . ' {{ data.title }}';
				}
				?>

				<?php if ( current_user_can( 'switch_themes' ) ) : ?>
					<button type="button" class="button change-theme" aria-label="<?php esc_attr_e( 'Change theme' ); ?>"><?php _ex( 'Change', 'theme' ); ?></button>
				<?php endif; ?>

		<?php
	}

	/**
	 * An Underscore (JS) template for this panel's content (but not its container).
	 *
	 * Class variables for this panel class are available in the `data` JS object;
	 * export custom variables by overriding WP_Customize_Panel::json().
	 *
	 * @since 4.9.0
	 *
	 * @see WP_Customize_Panel::print_template()
	 */
	protected function content_template() {
		?>
		<li class="panel-meta customize-info accordion-section <# if ( ! data.description ) { #> cannot-expand<# } #>">
			<button class="customize-panel-back" tabindex="-1" type="button"><?php _e( 'Back' ); ?></button>

					<?php
					printf(
						/* translators: %s: Themes panel title in the Customizer. */
						__( 'You are browsing %s' ),
						'' . __( 'Themes' ) . ''
					); // Separate strings for consistency with other panels.
					?>

				<?php if ( current_user_can( 'install_themes' ) && ! is_multisite() ) : ?>
					<# if ( data.description ) { #>
						<button class="customize-help-toggle dashicons dashicons-editor-help" type="button" aria-expanded="false"><?php _e( 'Help' ); ?></button>
					<# } #>
				<?php endif; ?>

			<?php if ( current_user_can( 'install_themes' ) && ! is_multisite() ) : ?>
				<# if ( data.description ) { #>

						{{{ data.description }}}

				<# } #>
			<?php endif; ?>

		<?php
	}
}


<?php
/**
 * Customize API: WP_Customize_Themes_Section class
 *
 * @package WordPress
 * @subpackage Customize
 * @since 4.4.0
 */

/**
 * Customize Themes Section class.
 *
 * A UI container for theme controls, which are displayed within sections.
 *
 * @since 4.2.0
 *
 * @see WP_Customize_Section
 */
class WP_Customize_Themes_Section extends WP_Customize_Section {

	/**
	 * Section type.
	 *
	 * @since 4.2.0
	 * @var string
	 */
	public $type = 'themes';

	/**
	 * Theme section action.
	 *
	 * Defines the type of themes to load (installed, wporg, etc.).
	 *
	 * @since 4.9.0
	 * @var string
	 */
	public $action = '';

	/**
	 * Theme section filter type.
	 *
	 * Determines whether filters are applied to loaded (local) themes or by initiating a new remote query (remote).
	 * When filtering is local, the initial themes query is not paginated by default.
	 *
	 * @since 4.9.0
	 * @var string
	 */
	public $filter_type = 'local';

	/**
	 * Get section parameters for JS.
	 *
	 * @since 4.9.0
	 * @return array Exported parameters.
	 */
	public function json() {
		$exported                = parent::json();
		$exported['action']      = $this->action;
		$exported['filter_type'] = $this->filter_type;

		return $exported;
	}

	/**
	 * Render a themes section as a JS template.
	 *
	 * The template is only rendered by PHP once, so all actions are prepared at once on the server side.
	 *
	 * @since 4.9.0
	 */
	protected function render_template() {
		?>

			<button type="button" class="customize-themes-section-title themes-section-{{ data.id }}">{{ data.title }}</button>
			<?php if ( current_user_can( 'install_themes' ) || is_multisite() ) : // @todo Upload support. ?>
			<?php endif; ?>

				<div class="theme-overlay" tabindex="0" role="dialog" aria-label="<?php esc_attr_e( 'Theme Details' ); ?>">

						<?php $this->filter_bar_content_template(); ?>

					<?php $this->filter_drawer_content_template(); ?>

							<?php
							printf(
								/* translators: %s: Support forums URL. */
								__( 'An unexpected error occurred. Something may be wrong with WordPress.org or this server’s configuration. If you continue to have problems, please try the support forums.' ),
								__( 'https://wordpress.org/support/forums/' )
							);
							?>

<?php _e( 'No themes found. Try a different search.' ); ?>

						<?php
						printf(
							/* translators: %s: "Search WordPress.org themes" button text. */
							__( 'No themes found. Try a different search, or %s.' ),
							sprintf( '<button type="button" class="button-link search-dotorg-themes">%s</button>', __( 'Search WordPress.org themes' ) )
						);
						?>

		<?php
	}

	/**
	 * Render the filter bar portion of a themes section as a JS template.
	 *
	 * The template is only rendered by PHP once, so all actions are prepared at once on the server side.
	 * The filter bar container is rendered by @see `render_template()`.
	 *
	 * @since 4.9.0
	 */
	protected function filter_bar_content_template() {
		?>
		<button type="button" class="button button-primary customize-section-back customize-themes-mobile-back"><?php _e( 'Back to theme sources' ); ?></button>
		<# if ( 'wporg' === data.action ) { #>

				<?php _e( 'Search themes…' ); ?>
				<input type="search" id="wp-filter-search-input-{{ data.id }}" placeholder="<?php esc_attr_e( 'Search themes…' ); ?>" aria-describedby="{{ data.id }}-live-search-desc" class="wp-filter-search">

				<?php _e( 'The search results will be updated as you type.' ); ?>

			<button type="button" class="button feature-filter-toggle">
				<?php _e( 'Filter themes' ); ?>
				<?php
				/* translators: %s: Number of filters selected. */
				printf( __( 'Filter themes (%s)' ), '0' );
				?>

			</button>
		<# } else { #>

				<?php _e( 'Search themes…' ); ?>
				<input type="search" id="{{ data.id }}-themes-filter" placeholder="<?php esc_attr_e( 'Search themes…' ); ?>" aria-describedby="{{ data.id }}-live-search-desc" class="wp-filter-search wp-filter-search-themes" />

				<?php _e( 'The search results will be updated as you type.' ); ?>

		<# } #>

				<?php
				/* translators: %s: Number of themes displayed. */
				printf( __( '%s themes' ), '0' );
				?>

		<?php
	}

	/**
	 * Render the filter drawer portion of a themes section as a JS template.
	 *
	 * The filter bar container is rendered by @see `render_template()`.
	 *
	 * @since 4.9.0
	 */
	protected function filter_drawer_content_template() {
		// @todo Use the .org API instead of the local core feature list.
		// The .org API is currently outdated and will be reconciled when the .org themes directory is next redesigned.
		$feature_list = get_theme_feature_list( false );
		?>
		<# if ( 'wporg' === data.action ) { #>

				<?php foreach ( $feature_list as $feature_name => $features ) : ?>
					<fieldset class="filter-group">
						<legend><?php echo esc_html( $feature_name ); ?></legend>

							<?php foreach ( $features as $feature => $feature_name ) : ?>
								<input type="checkbox" id="filter-id-<?php echo esc_attr( $feature ); ?>" value="<?php echo esc_attr( $feature ); ?>" />
								<label for="filter-id-<?php echo esc_attr( $feature ); ?>"><?php echo esc_html( $feature_name ); ?>
							<?php endforeach; ?>

					</fieldset>
				<?php endforeach; ?>

		<# } #>
		<?php
	}
}


<?php
/**
 * Customize API: WP_Customize_Upload_Control class
 *
 * @package WordPress
 * @subpackage Customize
 * @since 4.4.0
 */

/**
 * Customize Upload Control Class.
 *
 * @since 3.4.0
 *
 * @see WP_Customize_Media_Control
 */
class WP_Customize_Upload_Control extends WP_Customize_Media_Control {
	public $type          = 'upload';
	public $mime_type     = '';
	public $button_labels = array();
	public $removed       = '';   // Unused.
	public $context;              // Unused.
	public $extensions = array(); // Unused.

	/**
	 * Refresh the parameters passed to the JavaScript via JSON.
	 *
	 * @since 3.4.0
	 *
	 * @uses WP_Customize_Media_Control::to_json()
	 */
	public function to_json() {
		parent::to_json();

		$value = $this->value();
		if ( $value ) {
			// Get the attachment model for the existing file.
			$attachment_id = attachment_url_to_postid( $value );
			if ( $attachment_id ) {
				$this->json['attachment'] = wp_prepare_attachment_for_js( $attachment_id );
			}
		}
	}
}


<?php
/**
 * Customize API: WP_Widget_Area_Customize_Control class
 *
 * @package WordPress
 * @subpackage Customize
 * @since 3.4.0
 */

/**
 * Widget Area Customize Control class.
 *
 * @since 3.9.0
 *
 * @see WP_Customize_Control
 */
class WP_Widget_Area_Customize_Control extends WP_Customize_Control {

	/**
	 * Customize control type.
	 *
	 * @since 3.9.0
	 * @var string
	 */
	public $type = 'sidebar_widgets';

	/**
	 * Sidebar ID.
	 *
	 * @since 3.9.0
	 * @var int|string
	 */
	public $sidebar_id;

	/**
	 * Refreshes the parameters passed to the JavaScript via JSON.
	 *
	 * @since 3.9.0
	 */
	public function to_json() {
		parent::to_json();
		$exported_properties = array( 'sidebar_id' );
		foreach ( $exported_properties as $key ) {
			$this->json[ $key ] = $this->$key;
		}
	}

	/**
	 * Renders the control's content.
	 *
	 * @since 3.9.0
	 */
	public function render_content() {
		$id = 'reorder-widgets-desc-' . str_replace( array( '[', ']' ), array( '-', '' ), $this->id );
		?>
		<button type="button" class="button add-new-widget" aria-expanded="false" aria-controls="available-widgets">
			<?php _e( 'Add a Widget' ); ?>
		</button>
		<button type="button" class="button-link reorder-toggle" aria-label="<?php esc_attr_e( 'Reorder widgets' ); ?>" aria-describedby="<?php echo esc_attr( $id ); ?>">
			<?php _e( 'Reorder' ); ?>
			<?php _e( 'Done' ); ?>
		</button>
		<p class="screen-reader-text" id="<?php echo esc_attr( $id ); ?>"><?php _e( 'When in reorder mode, additional controls to reorder widgets will be available in the widgets list above.' ); ?>

		<?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 {
	/**
	 * Customize control type.
	 *
	 * @since 3.9.0
	 * @var string
	 */
	public $type = 'widget_form';

	/**
	 * Widget ID.
	 *
	 * @since 3.9.0
	 * @var string
	 */
	public $widget_id;

	/**
	 * Widget ID base.
	 *
	 * @since 3.9.0
	 * @var string
	 */
	public $widget_id_base;

	/**
	 * Sidebar ID.
	 *
	 * @since 3.9.0
	 * @var string
	 */
	public $sidebar_id;

	/**
	 * Widget status.
	 *
	 * @since 3.9.0
	 * @var bool True if new, false otherwise. Default false.
	 */
	public $is_new = false;

	/**
	 * Widget width.
	 *
	 * @since 3.9.0
	 * @var int
	 */
	public $width;

	/**
	 * Widget height.
	 *
	 * @since 3.9.0
	 * @var int
	 */
	public $height;

	/**
	 * Widget mode.
	 *
	 * @since 3.9.0
	 * @var bool True if wide, false otherwise. Default false.
	 */
	public $is_wide = false;

	/**
	 * Gather control params for exporting to JavaScript.
	 *
	 * @since 3.9.0
	 *
	 * @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.
	 *
	 * @since 3.9.0
	 */
	public function render_content() {}

	/**
	 * Whether the current widget is rendered on the page.
	 *
	 * @since 4.0.0
	 *
	 * @return bool Whether the widget is rendered.
	 */
	public function active_callback() {
		return $this->manager->widgets->is_widget_rendered( $this->widget_id );
	}
}