<?php
/**
* Blocks API: WP_Block_Styles_Registry class
*
* @package WordPress
* @subpackage Blocks
* @since 5.3.0
*/
/**
* Class used for interacting with block styles.
*
* @since 5.3.0
*/
final class WP_Block_Styles_Registry {
/**
* Registered block styles, as `$block_name => $block_style_name => $block_style_properties` multidimensional arrays.
*
* @since 5.3.0
*
* @var array[]
*/
private $registered_block_styles = array();
/**
* Container for the main instance of the class.
*
* @since 5.3.0
*
* @var WP_Block_Styles_Registry|null
*/
private static $instance = null;
/**
* Registers a block style for the given block type.
*
* @since 5.3.0
*
* @param string $block_name Block type name including namespace.
* @param array $style_properties Array containing the properties of the style name, label,
* is_default, style_handle (name of the stylesheet to be enqueued),
* inline_style (string containing the CSS to be added).
* @return bool True if the block style was registered with success and false otherwise.
*/
public function register( $block_name, $style_properties ) {
if ( ! isset( $block_name ) || ! is_string( $block_name ) ) {
_doing_it_wrong(
__METHOD__,
__( 'Block name must be a string.' ),
'5.3.0'
);
return false;
}
if ( ! isset( $style_properties['name'] ) || ! is_string( $style_properties['name'] ) ) {
_doing_it_wrong(
__METHOD__,
__( 'Block style name must be a string.' ),
'5.3.0'
);
return false;
}
if ( str_contains( $style_properties['name'], ' ' ) ) {
_doing_it_wrong(
__METHOD__,
__( 'Block style name must not contain any spaces.' ),
'5.9.0'
);
return false;
}
$block_style_name = $style_properties['name'];
if ( ! isset( $this->registered_block_styles[ $block_name ] ) ) {
$this->registered_block_styles[ $block_name ] = array();
}
$this->registered_block_styles[ $block_name ][ $block_style_name ] = $style_properties;
return true;
}
/**
* Unregisters a block style of the given block type.
*
* @since 5.3.0
*
* @param string $block_name Block type name including namespace.
* @param string $block_style_name Block style name.
* @return bool True if the block style was unregistered with success and false otherwise.
*/
public function unregister( $block_name, $block_style_name ) {
if ( ! $this->is_registered( $block_name, $block_style_name ) ) {
_doing_it_wrong(
__METHOD__,
/* translators: 1: Block name, 2: Block style name. */
sprintf( __( 'Block "%1$s" does not contain a style named "%2$s".' ), $block_name, $block_style_name ),
'5.3.0'
);
return false;
}
unset( $this->registered_block_styles[ $block_name ][ $block_style_name ] );
return true;
}
/**
* Retrieves the properties of a registered block style for the given block type.
*
* @since 5.3.0
*
* @param string $block_name Block type name including namespace.
* @param string $block_style_name Block style name.
* @return array Registered block style properties.
*/
public function get_registered( $block_name, $block_style_name ) {
if ( ! $this->is_registered( $block_name, $block_style_name ) ) {
return null;
}
return $this->registered_block_styles[ $block_name ][ $block_style_name ];
}
/**
* Retrieves all registered block styles.
*
* @since 5.3.0
*
* @return array[] Array of arrays containing the registered block styles properties grouped by block type.
*/
public function get_all_registered() {
return $this->registered_block_styles;
}
/**
* Retrieves registered block styles for a specific block type.
*
* @since 5.3.0
*
* @param string $block_name Block type name including namespace.
* @return array[] Array whose keys are block style names and whose values are block style properties.
*/
public function get_registered_styles_for_block( $block_name ) {
if ( isset( $this->registered_block_styles[ $block_name ] ) ) {
return $this->registered_block_styles[ $block_name ];
}
return array();
}
/**
* Checks if a block style is registered for the given block type.
*
* @since 5.3.0
*
* @param string $block_name Block type name including namespace.
* @param string $block_style_name Block style name.
* @return bool True if the block style is registered, false otherwise.
*/
public function is_registered( $block_name, $block_style_name ) {
return isset( $this->registered_block_styles[ $block_name ][ $block_style_name ] );
}
/**
* Utility method to retrieve the main instance of the class.
*
* The instance will be created if it does not exist yet.
*
* @since 5.3.0
*
* @return WP_Block_Styles_Registry The main instance.
*/
public static function get_instance() {
if ( null === self::$instance ) {
self::$instance = new self();
}
return self::$instance;
}
}