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<?php
/**
* Blocks API: WP_Block_Type_Registry class
*
* @package WordPress
* @subpackage Blocks
* @since 5.0.0
*/
/**
* Core class used for interacting with block types.
*
* @since 5.0.0
*/
#[AllowDynamicProperties]
final class WP_Block_Type_Registry {
/**
* Registered block types, as `$name => $instance` pairs.
*
* @since 5.0.0
* @var WP_Block_Type[]
*/
private $registered_block_types = array();
/**
* Container for the main instance of the class.
*
* @since 5.0.0
* @var WP_Block_Type_Registry|null
*/
private static $instance = null;
/**
* Registers a block type.
*
* @since 5.0.0
*
* @see WP_Block_Type::__construct()
*
* @param string|WP_Block_Type $name Block type name including namespace, or alternatively
* a complete WP_Block_Type instance. In case a WP_Block_Type
* is provided, the $args parameter will be ignored.
* @param array $args Optional. Array of block type arguments. Accepts any public property
* of `WP_Block_Type`. See WP_Block_Type::__construct() for information
* on accepted arguments. Default empty array.
* @return WP_Block_Type|false The registered block type on success, or false on failure.
*/
public function register( $name, $args = array() ) {
$block_type = null;
if ( $name instanceof WP_Block_Type ) {
$block_type = $name;
$name = $block_type->name;
}
if ( ! is_string( $name ) ) {
_doing_it_wrong(
__METHOD__,
__( 'Block type names must be strings.' ),
'5.0.0'
);
return false;
}
if ( preg_match( '/[A-Z]+/', $name ) ) {
_doing_it_wrong(
__METHOD__,
__( 'Block type names must not contain uppercase characters.' ),
'5.0.0'
);
return false;
}
$name_matcher = '/^[a-z0-9-]+\/[a-z0-9-]+$/';
if ( ! preg_match( $name_matcher, $name ) ) {
_doing_it_wrong(
__METHOD__,
__( 'Block type names must contain a namespace prefix. Example: my-plugin/my-custom-block-type' ),
'5.0.0'
);
return false;
}
if ( $this->is_registered( $name ) ) {
_doing_it_wrong(
__METHOD__,
/* translators: %s: Block name. */
sprintf( __( 'Block type "%s" is already registered.' ), $name ),
'5.0.0'
);
return false;
}
if ( ! $block_type ) {
$block_type = new WP_Block_Type( $name, $args );
}
$this->registered_block_types[ $name ] = $block_type;
return $block_type;
}
/**
* Unregisters a block type.
*
* @since 5.0.0
*
* @param string|WP_Block_Type $name Block type name including namespace, or alternatively
* a complete WP_Block_Type instance.
* @return WP_Block_Type|false The unregistered block type on success, or false on failure.
*/
public function unregister( $name ) {
if ( $name instanceof WP_Block_Type ) {
$name = $name->name;
}
if ( ! $this->is_registered( $name ) ) {
_doing_it_wrong(
__METHOD__,
/* translators: %s: Block name. */
sprintf( __( 'Block type "%s" is not registered.' ), $name ),
'5.0.0'
);
return false;
}
$unregistered_block_type = $this->registered_block_types[ $name ];
unset( $this->registered_block_types[ $name ] );
return $unregistered_block_type;
}
/**
* Retrieves a registered block type.
*
* @since 5.0.0
*
* @param string $name Block type name including namespace.
* @return WP_Block_Type|null The registered block type, or null if it is not registered.
*/
public function get_registered( $name ) {
if ( ! $this->is_registered( $name ) ) {
return null;
}
return $this->registered_block_types[ $name ];
}
/**
* Retrieves all registered block types.
*
* @since 5.0.0
*
* @return WP_Block_Type[] Associative array of `$block_type_name => $block_type` pairs.
*/
public function get_all_registered() {
return $this->registered_block_types;
}
/**
* Checks if a block type is registered.
*
* @since 5.0.0
*
* @param string $name Block type name including namespace.
* @return bool True if the block type is registered, false otherwise.
*/
public function is_registered( $name ) {
return isset( $this->registered_block_types[ $name ] );
}
public function __wakeup() {
if ( ! $this->registered_block_types ) {
return;
}
if ( ! is_array( $this->registered_block_types ) ) {
throw new UnexpectedValueException();
}
foreach ( $this->registered_block_types as $value ) {
if ( ! $value instanceof WP_Block_Type ) {
throw new UnexpectedValueException();
}
}
}
/**
* Utility method to retrieve the main instance of the class.
*
* The instance will be created if it does not exist yet.
*
* @since 5.0.0
*
* @return WP_Block_Type_Registry The main instance.
*/
public static function get_instance() {
if ( null === self::$instance ) {
self::$instance = new self();
}
return self::$instance;
}
}
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