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<?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 = (int) $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 menu 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, (int) $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 ) && (int) $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'] ) || (int) $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_options 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;
}
}