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/home/tahkoom/public_html/wp-includes/customize/class-wp-customize-nav-menu-setting.php
<?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;
}
}
بين التربية والتقنية هل ينتج العالم الافتراضي جيلاً مثقفًا أم معزولًا؟ – tahkoom.com
كتبت شروق عارف
في ظل التطور التكنولوجي الحادث والابتكارات الجديدة ظهر العالم الافتراضي الذي أحدث ثورة في كافة المجالات مما جعلنا نطرح سؤال مهم ماذا لو أصبح التعليم مرتبط بالعالم الافتراضي؟ وكيف سيؤثر هذا الربط على الطلاب وتحصيلهم الأكاديمي ؟ ما هو العالم الافتراضي والميتافيرس؟ مزايا وتحديات ربط التعليم بالعالم الافتراضي
آراء متباينة حول فاعلية العالم الافتراضي
يمكن القول إن ربط التعليم بالعالم الافتراضي قد يسهم بشكل كبير في توسيع أفاقنا الفكرية وسوف يجعل التجربة التعليمية أكثر متعة ولكن مع ذلك يجب التعامل مع هذه التقنية بحذر حتى نتجنب الأثار السلبية وعلينا التأكد أن العالم الافتراضي لا يمكن أن يحلل محل المعلم
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