WordPress/wp-includes/class-wp-customize-setting.php
2015-06-19 22:08:26 +00:00

1772 lines
48 KiB
PHP

<?php
/**
* WordPress Customize Setting classes
*
* @package WordPress
* @subpackage Customize
* @since 3.4.0
*/
/**
* Customize Setting class.
*
* Handles saving and sanitizing of settings.
*
* @since 3.4.0
*
* @see WP_Customize_Manager
*/
class WP_Customize_Setting {
/**
* @access public
* @var WP_Customize_Manager
*/
public $manager;
/**
* @access public
* @var string
*/
public $id;
/**
* @access public
* @var string
*/
public $type = 'theme_mod';
/**
* Capability required to edit this setting.
*
* @var string
*/
public $capability = 'edit_theme_options';
/**
* Feature a theme is required to support to enable this setting.
*
* @access public
* @var string
*/
public $theme_supports = '';
public $default = '';
public $transport = 'refresh';
/**
* Server-side sanitization callback for the setting's value.
*
* @var callback
*/
public $sanitize_callback = '';
public $sanitize_js_callback = '';
/**
* Whether or not the setting is initially dirty when created.
*
* This is used to ensure that a setting will be sent from the pane to the
* preview when loading the Customizer. Normally a setting only is synced to
* the preview if it has been changed. This allows the setting to be sent
* from the start.
*
* @since 4.2.0
* @access public
* @var bool
*/
public $dirty = false;
protected $id_data = array();
/**
* Constructor.
*
* Any supplied $args override class property defaults.
*
* @since 3.4.0
*
* @param WP_Customize_Manager $manager
* @param string $id An specific ID of the setting. Can be a
* theme mod or option name.
* @param array $args Setting arguments.
*/
public function __construct( $manager, $id, $args = array() ) {
$keys = array_keys( get_object_vars( $this ) );
foreach ( $keys as $key ) {
if ( isset( $args[ $key ] ) )
$this->$key = $args[ $key ];
}
$this->manager = $manager;
$this->id = $id;
// Parse the ID for array keys.
$this->id_data[ 'keys' ] = preg_split( '/\[/', str_replace( ']', '', $this->id ) );
$this->id_data[ 'base' ] = array_shift( $this->id_data[ 'keys' ] );
// Rebuild the ID.
$this->id = $this->id_data[ 'base' ];
if ( ! empty( $this->id_data[ 'keys' ] ) )
$this->id .= '[' . implode( '][', $this->id_data[ 'keys' ] ) . ']';
if ( $this->sanitize_callback )
add_filter( "customize_sanitize_{$this->id}", $this->sanitize_callback, 10, 2 );
if ( $this->sanitize_js_callback )
add_filter( "customize_sanitize_js_{$this->id}", $this->sanitize_js_callback, 10, 2 );
}
/**
* The ID for the current blog when the preview() method was called.
*
* @since 4.2.0
* @access protected
* @var int
*/
protected $_previewed_blog_id;
/**
* Return true if the current blog is not the same as the previewed blog.
*
* @since 4.2.0
* @access public
*
* @return bool If preview() has been called.
*/
public function is_current_blog_previewed() {
if ( ! isset( $this->_previewed_blog_id ) ) {
return false;
}
return ( get_current_blog_id() === $this->_previewed_blog_id );
}
/**
* Original non-previewed value stored by the preview method.
*
* @see WP_Customize_Setting::preview()
* @since 4.1.1
* @var mixed
*/
protected $_original_value;
/**
* Handle previewing the setting.
*
* @since 3.4.0
*/
public function preview() {
if ( ! isset( $this->_original_value ) ) {
$this->_original_value = $this->value();
}
if ( ! isset( $this->_previewed_blog_id ) ) {
$this->_previewed_blog_id = get_current_blog_id();
}
switch( $this->type ) {
case 'theme_mod' :
add_filter( 'theme_mod_' . $this->id_data[ 'base' ], array( $this, '_preview_filter' ) );
break;
case 'option' :
if ( empty( $this->id_data[ 'keys' ] ) )
add_filter( 'pre_option_' . $this->id_data[ 'base' ], array( $this, '_preview_filter' ) );
else {
add_filter( 'option_' . $this->id_data[ 'base' ], array( $this, '_preview_filter' ) );
add_filter( 'default_option_' . $this->id_data[ 'base' ], array( $this, '_preview_filter' ) );
}
break;
default :
/**
* Fires when the {@see WP_Customize_Setting::preview()} method is called for settings
* not handled as theme_mods or options.
*
* The dynamic portion of the hook name, `$this->id`, refers to the setting ID.
*
* @since 3.4.0
*
* @param WP_Customize_Setting $this {@see WP_Customize_Setting} instance.
*/
do_action( "customize_preview_{$this->id}", $this );
/**
* Fires when the {@see WP_Customize_Setting::preview()} method is called for settings
* not handled as theme_mods or options.
*
* The dynamic portion of the hook name, `$this->type`, refers to the setting type.
*
* @since 4.1.0
*
* @param WP_Customize_Setting $this {@see WP_Customize_Setting} instance.
*/
do_action( "customize_preview_{$this->type}", $this );
}
}
/**
* Callback function to filter the theme mods and options.
*
* If switch_to_blog() was called after the preview() method, and the current
* blog is now not the same blog, then this method does a no-op and returns
* the original value.
*
* @since 3.4.0
* @uses WP_Customize_Setting::multidimensional_replace()
*
* @param mixed $original Old value.
* @return mixed New or old value.
*/
public function _preview_filter( $original ) {
if ( ! $this->is_current_blog_previewed() ) {
return $original;
}
$undefined = new stdClass(); // symbol hack
$post_value = $this->post_value( $undefined );
if ( $undefined === $post_value ) {
$value = $this->_original_value;
} else {
$value = $post_value;
}
return $this->multidimensional_replace( $original, $this->id_data['keys'], $value );
}
/**
* Check user capabilities and theme supports, and then save
* the value of the setting.
*
* @since 3.4.0
*
* @return false|void False if cap check fails or value isn't set.
*/
final public function save() {
$value = $this->post_value();
if ( ! $this->check_capabilities() || ! isset( $value ) )
return false;
/**
* Fires when the WP_Customize_Setting::save() method is called.
*
* The dynamic portion of the hook name, `$this->id_data['base']` refers to
* the base slug of the setting name.
*
* @since 3.4.0
*
* @param WP_Customize_Setting $this {@see WP_Customize_Setting} instance.
*/
do_action( 'customize_save_' . $this->id_data[ 'base' ], $this );
$this->update( $value );
}
/**
* Fetch and sanitize the $_POST value for the setting.
*
* @since 3.4.0
*
* @param mixed $default A default value which is used as a fallback. Default is null.
* @return mixed The default value on failure, otherwise the sanitized value.
*/
final public function post_value( $default = null ) {
return $this->manager->post_value( $this, $default );
}
/**
* Sanitize an input.
*
* @since 3.4.0
*
* @param string|array $value The value to sanitize.
* @return string|array|null Null if an input isn't valid, otherwise the sanitized value.
*/
public function sanitize( $value ) {
$value = wp_unslash( $value );
/**
* Filter a Customize setting value in un-slashed form.
*
* @since 3.4.0
*
* @param mixed $value Value of the setting.
* @param WP_Customize_Setting $this WP_Customize_Setting instance.
*/
return apply_filters( "customize_sanitize_{$this->id}", $value, $this );
}
/**
* Save the value of the setting, using the related API.
*
* @since 3.4.0
*
* @param mixed $value The value to update.
* @return mixed The result of saving the value.
*/
protected function update( $value ) {
switch( $this->type ) {
case 'theme_mod' :
return $this->_update_theme_mod( $value );
case 'option' :
return $this->_update_option( $value );
default :
/**
* Fires when the {@see WP_Customize_Setting::update()} method is called for settings
* not handled as theme_mods or options.
*
* The dynamic portion of the hook name, `$this->type`, refers to the type of setting.
*
* @since 3.4.0
*
* @param mixed $value Value of the setting.
* @param WP_Customize_Setting $this WP_Customize_Setting instance.
*/
return do_action( 'customize_update_' . $this->type, $value, $this );
}
}
/**
* Update the theme mod from the value of the parameter.
*
* @since 3.4.0
*
* @param mixed $value The value to update.
*/
protected function _update_theme_mod( $value ) {
// Handle non-array theme mod.
if ( empty( $this->id_data[ 'keys' ] ) ) {
set_theme_mod( $this->id_data[ 'base' ], $value );
return;
}
// Handle array-based theme mod.
$mods = get_theme_mod( $this->id_data[ 'base' ] );
$mods = $this->multidimensional_replace( $mods, $this->id_data[ 'keys' ], $value );
if ( isset( $mods ) ) {
set_theme_mod( $this->id_data[ 'base' ], $mods );
}
}
/**
* Update the option from the value of the setting.
*
* @since 3.4.0
*
* @param mixed $value The value to update.
* @return bool The result of saving the value.
*/
protected function _update_option( $value ) {
// Handle non-array option.
if ( empty( $this->id_data[ 'keys' ] ) )
return update_option( $this->id_data[ 'base' ], $value );
// Handle array-based options.
$options = get_option( $this->id_data[ 'base' ] );
$options = $this->multidimensional_replace( $options, $this->id_data[ 'keys' ], $value );
if ( isset( $options ) )
return update_option( $this->id_data[ 'base' ], $options );
}
/**
* Fetch the value of the setting.
*
* @since 3.4.0
*
* @return mixed The value.
*/
public function value() {
// Get the callback that corresponds to the setting type.
switch( $this->type ) {
case 'theme_mod' :
$function = 'get_theme_mod';
break;
case 'option' :
$function = 'get_option';
break;
default :
/**
* Filter a Customize setting value not handled as a theme_mod or option.
*
* The dynamic portion of the hook name, `$this->id_date['base']`, refers to
* the base slug of the setting name.
*
* For settings handled as theme_mods or options, see those corresponding
* functions for available hooks.
*
* @since 3.4.0
*
* @param mixed $default The setting default value. Default empty.
*/
return apply_filters( 'customize_value_' . $this->id_data[ 'base' ], $this->default );
}
// Handle non-array value
if ( empty( $this->id_data[ 'keys' ] ) )
return $function( $this->id_data[ 'base' ], $this->default );
// Handle array-based value
$values = $function( $this->id_data[ 'base' ] );
return $this->multidimensional_get( $values, $this->id_data[ 'keys' ], $this->default );
}
/**
* Sanitize the setting's value for use in JavaScript.
*
* @since 3.4.0
*
* @return mixed The requested escaped value.
*/
public function js_value() {
/**
* Filter a Customize setting value for use in JavaScript.
*
* The dynamic portion of the hook name, `$this->id`, refers to the setting ID.
*
* @since 3.4.0
*
* @param mixed $value The setting value.
* @param WP_Customize_Setting $this {@see WP_Customize_Setting} instance.
*/
$value = apply_filters( "customize_sanitize_js_{$this->id}", $this->value(), $this );
if ( is_string( $value ) )
return html_entity_decode( $value, ENT_QUOTES, 'UTF-8');
return $value;
}
/**
* Validate user capabilities whether the theme supports the setting.
*
* @since 3.4.0
*
* @return bool False if theme doesn't support the setting or user can't change setting, otherwise true.
*/
final public function check_capabilities() {
if ( $this->capability && ! call_user_func_array( 'current_user_can', (array) $this->capability ) )
return false;
if ( $this->theme_supports && ! call_user_func_array( 'current_theme_supports', (array) $this->theme_supports ) )
return false;
return true;
}
/**
* Multidimensional helper function.
*
* @since 3.4.0
*
* @param $root
* @param $keys
* @param bool $create Default is false.
* @return array|void Keys are 'root', 'node', and 'key'.
*/
final protected function multidimensional( &$root, $keys, $create = false ) {
if ( $create && empty( $root ) )
$root = array();
if ( ! isset( $root ) || empty( $keys ) )
return;
$last = array_pop( $keys );
$node = &$root;
foreach ( $keys as $key ) {
if ( $create && ! isset( $node[ $key ] ) )
$node[ $key ] = array();
if ( ! is_array( $node ) || ! isset( $node[ $key ] ) )
return;
$node = &$node[ $key ];
}
if ( $create ) {
if ( ! is_array( $node ) ) {
// account for an array overriding a string or object value
$node = array();
}
if ( ! isset( $node[ $last ] ) ) {
$node[ $last ] = array();
}
}
if ( ! isset( $node[ $last ] ) )
return;
return array(
'root' => &$root,
'node' => &$node,
'key' => $last,
);
}
/**
* Will attempt to replace a specific value in a multidimensional array.
*
* @since 3.4.0
*
* @param $root
* @param $keys
* @param mixed $value The value to update.
* @return
*/
final protected function multidimensional_replace( $root, $keys, $value ) {
if ( ! isset( $value ) )
return $root;
elseif ( empty( $keys ) ) // If there are no keys, we're replacing the root.
return $value;
$result = $this->multidimensional( $root, $keys, true );
if ( isset( $result ) )
$result['node'][ $result['key'] ] = $value;
return $root;
}
/**
* Will attempt to fetch a specific value from a multidimensional array.
*
* @since 3.4.0
*
* @param $root
* @param $keys
* @param mixed $default A default value which is used as a fallback. Default is null.
* @return mixed The requested value or the default value.
*/
final protected function multidimensional_get( $root, $keys, $default = null ) {
if ( empty( $keys ) ) // If there are no keys, test the root.
return isset( $root ) ? $root : $default;
$result = $this->multidimensional( $root, $keys );
return isset( $result ) ? $result['node'][ $result['key'] ] : $default;
}
/**
* Will attempt to check if a specific value in a multidimensional array is set.
*
* @since 3.4.0
*
* @param $root
* @param $keys
* @return bool True if value is set, false if not.
*/
final protected function multidimensional_isset( $root, $keys ) {
$result = $this->multidimensional_get( $root, $keys );
return isset( $result );
}
}
/**
* A setting that is used to filter a value, but will not save the results.
*
* Results should be properly handled using another setting or callback.
*
* @since 3.4.0
*
* @see WP_Customize_Setting
*/
class WP_Customize_Filter_Setting extends WP_Customize_Setting {
/**
* @since 3.4.0
*/
public function update( $value ) {}
}
/**
* A setting that is used to filter a value, but will not save the results.
*
* Results should be properly handled using another setting or callback.
*
* @since 3.4.0
*
* @see WP_Customize_Setting
*/
final class WP_Customize_Header_Image_Setting extends WP_Customize_Setting {
public $id = 'header_image_data';
/**
* @since 3.4.0
*
* @global Custom_Image_Header $custom_image_header
*
* @param $value
*/
public function update( $value ) {
global $custom_image_header;
// If the value doesn't exist (removed or random),
// use the header_image value.
if ( ! $value )
$value = $this->manager->get_setting('header_image')->post_value();
if ( is_array( $value ) && isset( $value['choice'] ) )
$custom_image_header->set_header_image( $value['choice'] );
else
$custom_image_header->set_header_image( $value );
}
}
/**
* Customizer Background Image Setting class.
*
* @since 3.4.0
*
* @see WP_Customize_Setting
*/
final class WP_Customize_Background_Image_Setting extends WP_Customize_Setting {
public $id = 'background_image_thumb';
/**
* @since 3.4.0
*
* @param $value
*/
public function update( $value ) {
remove_theme_mod( 'background_image_thumb' );
}
}
/**
* 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_items()
* @see WP_Customize_Setting
*/
class WP_Customize_Nav_Menu_Item_Setting extends WP_Customize_Setting {
const ID_PATTERN = '/^nav_menu_item\[(?P<id>-?\d+)\]$/';
const POST_TYPE = 'nav_menu_item';
const TYPE = 'nav_menu_item';
/**
* Setting type.
*
* @since 4.3.0
*
* @var string
*/
public $type = self::TYPE;
/**
* Default setting value.
*
* @since 4.3.0
*
* @see wp_setup_nav_menu_item()
* @var array
*/
public $default = array(
// The $menu_item_data for wp_update_nav_menu_item().
'object_id' => 0,
'object' => '', // Taxonomy name.
'menu_item_parent' => 0, // A.K.A. menu-item-parent-id; note that post_parent is different, and not included.
'position' => 0, // A.K.A. menu_order.
'type' => 'custom', // Note that type_label is not included here.
'title' => '',
'url' => '',
'target' => '',
'attr_title' => '',
'description' => '',
'classes' => '',
'xfn' => '',
'status' => 'publish',
'original_title' => '',
'nav_menu_term_id' => 0, // This will be supplied as the $menu_id arg for wp_update_nav_menu_item().
// @todo also expose invalid?
);
/**
* Default transport.
*
* @since 4.3.0
*
* @var string
*/
public $transport = 'postMessage';
/**
* The post ID represented by this setting instance. This is the db_id.
*
* A negative value represents a placeholder ID for a new menu not yet saved.
*
* @todo Should this be $db_id, and also use this for WP_Customize_Nav_Menu_Setting::$term_id
*
* @since 4.3.0
*
* @var int
*/
public $post_id;
/**
* Previous (placeholder) post ID used before creating a new menu item.
*
* This value will be exported to JS via the customize_save_response filter
* so that JavaScript can update the settings to refer to the newly-assigned
* post ID. This value is always negative to indicate it does not refer to
* a real post.
*
* @since 4.3.0
*
* @see WP_Customize_Nav_Menu_Item_Setting::update()
* @see WP_Customize_Nav_Menu_Item_Setting::amend_customize_save_response()
*
* @var int
*/
public $previous_post_id;
/**
* When previewing or updating a menu item, this stores the previous nav_menu_term_id
* which ensures that we can apply the proper filters.
*
* @since 4.3.0
*
* @var int
*/
public $original_nav_menu_term_id;
/**
* Whether or not preview() was called.
*
* @since 4.3.0
*
* @var bool
*/
protected $is_previewed = false;
/**
* 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.
*
* When status is inserted, the placeholder post ID is stored in $previous_post_id.
* When status is error, the error is stored in $update_error.
*
* @since 4.3.0
*
* @see WP_Customize_Nav_Menu_Item_Setting::update()
* @see WP_Customize_Nav_Menu_Item_Setting::amend_customize_save_response()
*
* @var string updated|inserted|deleted|error
*/
public $update_status;
/**
* Any error object returned by wp_update_nav_menu_item() when setting is updated.
*
* @since 4.3.0
*
* @see WP_Customize_Nav_Menu_Item_Setting::update()
* @see WP_Customize_Nav_Menu_Item_Setting::amend_customize_save_response()
*
* @var WP_Error
*/
public $update_error;
/**
* Constructor.
*
* Any supplied $args override class property defaults.
*
* @since 4.3.0
*
* @param WP_Customize_Manager $manager Manager instance.
* @param string $id An specific ID of the setting. Can be a
* theme mod or option name.
* @param array $args Optional. Setting arguments.
* @throws Exception If $id is not valid for this setting type.
*/
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->post_id = intval( $matches['id'] );
$menu = $this->value();
$this->original_nav_menu_term_id = $menu['nav_menu_term_id'];
parent::__construct( $manager, $id, $args );
}
/**
* Get the instance data for a given widget setting.
*
* @since 4.3.0
*
* @see wp_setup_nav_menu_item()
*
* @return array
*/
public function value() {
if ( $this->is_previewed && $this->_previewed_blog_id === get_current_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 ID of less than one indicates a nav_menu not yet inserted.
if ( $this->post_id > 0 ) {
$post = get_post( $this->post_id );
if ( $post && self::POST_TYPE === $post->post_type ) {
$item = wp_setup_nav_menu_item( $post );
$value = wp_array_slice_assoc(
(array) $item,
array_keys( $this->default )
);
$value['position'] = $item->menu_order;
$value['status'] = $item->post_status;
$value['original_title'] = '';
$menus = wp_get_post_terms( $post->ID, WP_Customize_Nav_Menu_Setting::TAXONOMY, array(
'fields' => 'ids',
) );
if ( ! empty( $menus ) ) {
$value['nav_menu_term_id'] = array_shift( $menus );
} else {
$value['nav_menu_term_id'] = 0;
}
if ( 'post_type' === $value['type'] ) {
$original_title = get_the_title( $value['object_id'] );
} elseif ( 'taxonomy' === $value['type'] ) {
$original_title = get_term_field( 'name', $value['object_id'], $value['object'], 'raw' );
if ( is_wp_error( $original_title ) ) {
$original_title = '';
}
}
if ( ! empty( $original_title ) ) {
$value['original_title'] = $original_title;
}
}
}
if ( ! is_array( $value ) ) {
$value = $this->default;
}
}
if ( is_array( $value ) ) {
foreach ( array( 'object_id', 'menu_item_parent', 'nav_menu_term_id' ) as $key ) {
$value[ $key ] = intval( $value[ $key ] );
}
}
return $value;
}
/**
* Handle previewing the setting.
*
* @since 4.3.0
*
* @see WP_Customize_Manager::post_value()
*/
public function preview() {
if ( $this->is_previewed ) {
return;
}
$this->is_previewed = true;
$this->_original_value = $this->value();
$this->original_nav_menu_term_id = $this->_original_value['nav_menu_term_id'];
$this->_previewed_blog_id = get_current_blog_id();
add_filter( 'wp_get_nav_menu_items', array( $this, 'filter_wp_get_nav_menu_items' ), 10, 3 );
$sort_callback = array( __CLASS__, 'sort_wp_get_nav_menu_items' );
if ( ! has_filter( 'wp_get_nav_menu_items', $sort_callback ) ) {
add_filter( 'wp_get_nav_menu_items', array( __CLASS__, 'sort_wp_get_nav_menu_items' ), 1000, 3 );
}
// @todo Add get_post_metadata filters for plugins to add their data.
}
/**
* Filter the wp_get_nav_menu_items() result to supply the previewed menu items.
*
* @since 4.3.0
*
* @see wp_get_nav_menu_items()
*
* @param array $items An array of menu item post objects.
* @param object $menu The menu object.
* @param array $args An array of arguments used to retrieve menu item objects.
* @return array Array of menu items,
*/
public function filter_wp_get_nav_menu_items( $items, $menu, $args ) {
$this_item = $this->value();
$current_nav_menu_term_id = $this_item['nav_menu_term_id'];
unset( $this_item['nav_menu_term_id'] );
$should_filter = (
$menu->term_id === $this->original_nav_menu_term_id
||
$menu->term_id === $current_nav_menu_term_id
);
if ( ! $should_filter ) {
return $items;
}
// Handle deleted menu item, or menu item moved to another menu.
$should_remove = (
false === $this_item
||
(
$this->original_nav_menu_term_id === $menu->term_id
&&
$current_nav_menu_term_id !== $this->original_nav_menu_term_id
)
);
if ( $should_remove ) {
$filtered_items = array();
foreach ( $items as $item ) {
if ( $item->db_id !== $this->post_id ) {
$filtered_items[] = $item;
}
}
return $filtered_items;
}
$mutated = false;
$should_update = (
is_array( $this_item )
&&
$current_nav_menu_term_id === $menu->term_id
);
if ( $should_update ) {
foreach ( $items as $item ) {
if ( $item->db_id === $this->post_id ) {
foreach ( get_object_vars( $this->value_as_wp_post_nav_menu_item() ) as $key => $value ) {
$item->$key = $value;
}
$mutated = true;
}
}
// Not found so we have to append it..
if ( ! $mutated ) {
$items[] = $this->value_as_wp_post_nav_menu_item();
}
}
return $items;
}
/**
* Re-apply the tail logic also applied on $items by wp_get_nav_menu_items().
*
* @since 4.3.0
*
* @see wp_get_nav_menu_items()
*
* @param array $items An array of menu item post objects.
* @param object $menu The menu object.
* @param array $args An array of arguments used to retrieve menu item objects.
* @return array Array of menu items,
*/
public static function sort_wp_get_nav_menu_items( $items, $menu, $args ) {
// @todo We should probably re-apply some constraints imposed by $args.
unset( $args['include'] );
// Remove invalid items only in frontend.
if ( ! is_admin() ) {
$items = array_filter( $items, '_is_valid_nav_menu_item' );
}
if ( ARRAY_A === $args['output'] ) {
$GLOBALS['_menu_item_sort_prop'] = $args['output_key'];
usort( $items, '_sort_nav_menu_items' );
$i = 1;
foreach ( $items as $k => $item ) {
$items[ $k ]->$args['output_key'] = $i++;
}
}
return $items;
}
/**
* Get the value emulated into a WP_Post and set up as a nav_menu_item.
*
* @since 4.3.0
*
* @return WP_Post With {@see wp_setup_nav_menu_item()} applied.
*/
public function value_as_wp_post_nav_menu_item() {
$item = (object) $this->value();
unset( $item->nav_menu_term_id );
$item->post_status = $item->status;
unset( $item->status );
$item->post_type = 'nav_menu_item';
$item->menu_order = $item->position;
unset( $item->position );
$item->post_author = get_current_user_id();
if ( $item->title ) {
$item->post_title = $item->title;
}
$item->ID = $this->post_id;
$post = new WP_Post( (object) $item );
$post = wp_setup_nav_menu_item( $post );
return $post;
}
/**
* 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 $menu_item_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( $menu_item_value ) {
// Menu is marked for deletion.
if ( false === $menu_item_value ) {
return $menu_item_value;
}
// Invalid.
if ( ! is_array( $menu_item_value ) ) {
return null;
}
$default = array(
'object_id' => 0,
'object' => '',
'menu_item_parent' => 0,
'position' => 0,
'type' => 'custom',
'title' => '',
'url' => '',
'target' => '',
'attr_title' => '',
'description' => '',
'classes' => '',
'xfn' => '',
'status' => 'publish',
'original_title' => '',
'nav_menu_term_id' => 0,
);
$menu_item_value = array_merge( $default, $menu_item_value );
$menu_item_value = wp_array_slice_assoc( $menu_item_value, array_keys( $default ) );
$menu_item_value['position'] = max( 0, intval( $menu_item_value['position'] ) );
foreach ( array( 'object_id', 'menu_item_parent', 'nav_menu_term_id' ) as $key ) {
// Note we need to allow negative-integer IDs for previewed objects not inserted yet.
$menu_item_value[ $key ] = intval( $menu_item_value[ $key ] );
}
foreach ( array( 'type', 'object', 'target' ) as $key ) {
$menu_item_value[ $key ] = sanitize_key( $menu_item_value[ $key ] );
}
foreach ( array( 'xfn', 'classes' ) as $key ) {
$value = $menu_item_value[ $key ];
if ( ! is_array( $value ) ) {
$value = explode( ' ', $value );
}
$menu_item_value[ $key ] = implode( ' ', array_map( 'sanitize_html_class', $value ) );
}
foreach ( array( 'title', 'attr_title', 'description', 'original_title' ) as $key ) {
// @todo Should esc_attr() the attr_title as well?
$menu_item_value[ $key ] = sanitize_text_field( $menu_item_value[ $key ] );
}
$menu_item_value['url'] = esc_url_raw( $menu_item_value['url'] );
if ( ! get_post_status_object( $menu_item_value['status'] ) ) {
$menu_item_value['status'] = 'publish';
}
/** This filter is documented in wp-includes/class-wp-customize-setting.php */
return apply_filters( "customize_sanitize_{$this->id}", $menu_item_value, $this );
}
/**
* Create/update the nav_menu_item post for this setting.
*
* Any created menu items will have their assigned post IDs exported to the client
* via the 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_item()
*
* @param array|false $value The menu item array to update. If false, then the menu item will be deleted entirely.
* See {@see WP_Customize_Nav_Menu_Item_Setting::$default} for what the value should
* consist of.
* @return void
*/
protected function update( $value ) {
if ( $this->is_updated ) {
return;
}
$this->is_updated = true;
$is_placeholder = ( $this->post_id < 0 );
$is_delete = ( false === $value );
add_filter( 'customize_save_response', array( $this, 'amend_customize_save_response' ) );
if ( $is_delete ) {
// If the current setting post is a placeholder, a delete request is a no-op.
if ( $is_placeholder ) {
$this->update_status = 'deleted';
} else {
$r = wp_delete_post( $this->post_id, true );
if ( false === $r ) {
$this->update_error = new WP_Error( 'delete_failure' );
$this->update_status = 'error';
} else {
$this->update_status = 'deleted';
}
// @todo send back the IDs for all associated nav menu items deleted, so these settings (and controls) can be removed from Customizer?
}
} else {
// Handle saving menu items for menus that are being newly-created.
if ( $value['nav_menu_term_id'] < 0 ) {
$nav_menu_setting_id = sprintf( 'nav_menu[%s]', $value['nav_menu_term_id'] );
$nav_menu_setting = $this->manager->get_setting( $nav_menu_setting_id );
if ( ! $nav_menu_setting || ! ( $nav_menu_setting instanceof WP_Customize_Nav_Menu_Setting ) ) {
$this->update_status = 'error';
$this->update_error = new WP_Error( 'unexpected_nav_menu_setting' );
return;
}
if ( false === $nav_menu_setting->save() ) {
$this->update_status = 'error';
$this->update_error = new WP_Error( 'nav_menu_setting_failure' );
}
if ( $nav_menu_setting->previous_term_id !== intval( $value['nav_menu_term_id'] ) ) {
$this->update_status = 'error';
$this->update_error = new WP_Error( 'unexpected_previous_term_id' );
return;
}
$value['nav_menu_term_id'] = $nav_menu_setting->term_id;
}
// Handle saving a nav menu item that is a child of a nav menu item being newly-created.
if ( $value['menu_item_parent'] < 0 ) {
$parent_nav_menu_item_setting_id = sprintf( 'nav_menu_item[%s]', $value['menu_item_parent'] );
$parent_nav_menu_item_setting = $this->manager->get_setting( $parent_nav_menu_item_setting_id );
if ( ! $parent_nav_menu_item_setting || ! ( $parent_nav_menu_item_setting instanceof WP_Customize_Nav_Menu_Item_Setting ) ) {
$this->update_status = 'error';
$this->update_error = new WP_Error( 'unexpected_nav_menu_item_setting' );
return;
}
if ( false === $parent_nav_menu_item_setting->save() ) {
$this->update_status = 'error';
$this->update_error = new WP_Error( 'nav_menu_item_setting_failure' );
}
if ( $parent_nav_menu_item_setting->previous_post_id !== intval( $value['menu_item_parent'] ) ) {
$this->update_status = 'error';
$this->update_error = new WP_Error( 'unexpected_previous_post_id' );
return;
}
$value['menu_item_parent'] = $parent_nav_menu_item_setting->post_id;
}
// Insert or update menu.
$menu_item_data = array(
'menu-item-object-id' => $value['object_id'],
'menu-item-object' => $value['object'],
'menu-item-parent-id' => $value['menu_item_parent'],
'menu-item-position' => $value['position'],
'menu-item-type' => $value['type'],
'menu-item-title' => $value['title'],
'menu-item-url' => $value['url'],
'menu-item-description' => $value['description'],
'menu-item-attr-title' => $value['attr_title'],
'menu-item-target' => $value['target'],
'menu-item-classes' => $value['classes'],
'menu-item-xfn' => $value['xfn'],
'menu-item-status' => $value['status'],
);
$r = wp_update_nav_menu_item(
$value['nav_menu_term_id'],
$is_placeholder ? 0 : $this->post_id,
$menu_item_data
);
if ( is_wp_error( $r ) ) {
$this->update_status = 'error';
$this->update_error = $r;
} else {
if ( $is_placeholder ) {
$this->previous_post_id = $this->post_id;
$this->post_id = $r;
$this->update_status = 'inserted';
} else {
$this->update_status = 'updated';
}
}
}
}
/**
* Export data for the JS client.
*
* @since 4.3.0
*
* @see WP_Customize_Nav_Menu_Item_Setting::update()
*
* @param array $data Additional information passed back to the 'saved' event on `wp.customize`.
* @return array
*/
public function amend_customize_save_response( $data ) {
if ( ! isset( $data['nav_menu_item_updates'] ) ) {
$data['nav_menu_item_updates'] = array();
}
$data['nav_menu_item_updates'][] = array(
'post_id' => $this->post_id,
'previous_post_id' => $this->previous_post_id,
'error' => $this->update_error ? $this->update_error->get_error_code() : null,
'status' => $this->update_status,
);
return $data;
}
}
/**
* 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
*
* @see wp_get_nav_menu_object()
*
* @var array
*/
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 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
*
* @see WP_Customize_Nav_Menu_Setting::update()
* @see WP_Customize_Nav_Menu_Setting::amend_customize_save_response()
*
* @var int
*/
public $previous_term_id;
/**
* Whether or not preview() was called.
*
* @since 4.3.0
*
* @var bool
*/
protected $is_previewed = false;
/**
* 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.
*
* 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
*
* @see WP_Customize_Nav_Menu_Setting::update()
* @see WP_Customize_Nav_Menu_Setting::amend_customize_save_response()
*
* @var string updated|inserted|deleted|error
*/
public $update_status;
/**
* Any error object returned by wp_update_nav_menu_object() when setting is updated.
*
* @since 4.3.0
*
* @see WP_Customize_Nav_Menu_Setting::update()
* @see WP_Customize_Nav_Menu_Setting::amend_customize_save_response()
*
* @var WP_Error
*/
public $update_error;
/**
* Constructor.
*
* Any supplied $args override class property defaults.
*
* @since 4.3.0
*
* @param WP_Customize_Manager $manager Manager instance.
* @param string $id An specific ID of the setting. Can be a
* theme mod or option name.
* @param array $args Optional. Setting arguments.
* @throws Exception If $id is not valid for this setting type.
*/
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
*/
public function value() {
if ( $this->is_previewed && $this->_previewed_blog_id === get_current_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'] );
}
}
}
if ( ! is_array( $value ) ) {
$value = $this->default;
}
}
return $value;
}
/**
* Handle previewing the setting.
*
* @since 4.3.0
*
* @see WP_Customize_Manager::post_value()
*/
public function preview() {
if ( $this->is_previewed ) {
return;
}
$this->is_previewed = true;
$this->_original_value = $this->value();
$this->_previewed_blog_id = get_current_blog_id();
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' ) );
}
/**
* Filter 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;
}
/**
* Filter 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
*/
public function filter_nav_menu_options( $nav_menu_options ) {
if ( $this->_previewed_blog_id !== get_current_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( $value['auto_add'] );
/** This filter is documented in wp-includes/class-wp-customize-setting.php */
return apply_filters( "customize_sanitize_{$this->id}", $value, $this );
}
/**
* Create/update the nav_menu term for this setting.
*
* Any created menus will have their assigned term IDs exported to the client
* via the 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 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' ) );
if ( isset( $value['name'] ) ) {
$menu_data['menu-name'] = $value['name'];
}
$r = wp_update_nav_menu_object( $is_placeholder ? 0 : $this->term_id, $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 );
}
// Make sure that new menus assigned to nav menu locations use their new IDs.
if ( 'inserted' === $this->update_status ) {
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 ) && $this->previous_term_id === intval( $post_value ) ) {
$this->manager->set_post_value( $setting->id, $this->term_id );
$setting->save();
}
}
}
}
/**
* Update 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
*/
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'] );
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
*/
public function amend_customize_save_response( $data ) {
if ( ! isset( $data['nav_menu_updates'] ) ) {
$data['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,
);
return $data;
}
}