<?php
/**
* Block Bindings API
*
* Contains functions for managing block bindings in WordPress.
*
* @package WordPress
* @subpackage Block Bindings
* @since 6.5.0
*/
/**
* Registers a new block bindings source.
*
* Sources are used to override block's original attributes with a value
* coming from the source. Once a source is registered, it can be used by a
* block by setting its `metadata.bindings` attribute to a value that refers
* to the source.
*
* @since 6.5.0
*
* @param string $source_name The name of the source. It must be a string containing a namespace prefix, i.e.
* `my-plugin/my-custom-source`. It must only contain lowercase alphanumeric
* characters, the forward slash `/` and dashes.
* @param array $source_properties {
* The array of arguments that are used to register a source.
*
* @type string $label The label of the source.
* @type callback $get_value_callback A callback executed when the source is processed during block rendering.
* The callback should have the following signature:
*
* `function ($source_args, $block_instance,$attribute_name): mixed`
* - @param array $source_args Array containing source arguments
* used to look up the override value,
* i.e. {"key": "foo"}.
* - @param WP_Block $block_instance The block instance.
* - @param string $attribute_name The name of an attribute .
* The callback has a mixed return type; it may return a string to override
* the block's original value, null, false to remove an attribute, etc.
* @type array $uses_context (optional) Array of values to add to block `uses_context` needed by the source.
* }
* @return WP_Block_Bindings_Source|false Source when the registration was successful, or `false` on failure.
*/
if ( ! function_exists( 'register_block_bindings_source' ) ) {
function register_block_bindings_source( string $source_name, array $source_properties ) {
return WP_Block_Bindings_Registry::get_instance()->register( $source_name, $source_properties );
}
}
/**
* Unregisters a block bindings source.
*
* @since 6.5.0
*
* @param string $source_name Block bindings source name including namespace.
* @return WP_Block_Bindings_Source|false The unregistered block bindings source on success and `false` otherwise.
*/
if ( ! function_exists( 'unregister_block_bindings_source' ) ) {
function unregister_block_bindings_source( string $source_name ) {
return WP_Block_Bindings_Registry::get_instance()->unregister( $source_name );
}
}
/**
* Retrieves the list of all registered block bindings sources.
*
* @since 6.5.0
*
* @return WP_Block_Bindings_Source The array of registered block bindings sources.
*/
if ( ! function_exists( 'get_all_registered_block_bindings_sources' ) ) {
function get_all_registered_block_bindings_sources() {
return WP_Block_Bindings_Registry::get_instance()->get_all_registered();
}
}
/**
* Retrieves a registered block bindings source.
*
* @since 6.5.0
*
* @param string $source_name The name of the source.
* @return WP_Block_Bindings_Source|null The registered block bindings source, or `null` if it is not registered.
*/
if ( ! function_exists( 'get_block_bindings_source' ) ) {
function get_block_bindings_source( string $source_name ) {
return WP_Block_Bindings_Registry::get_instance()->get_registered( $source_name );
}
}