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Block Bindings: Adapt block bindings to wordpress code latest changes #58383

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merged 11 commits into from
Jan 30, 2024
Merged

Block Bindings: Adapt block bindings to wordpress code latest changes #58383

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2a9e826
Update sources registration logic
SantosGuillamot Jan 29, 2024
f808acd
Remove old function from pattern source
SantosGuillamot Jan 29, 2024
36b3bea
Update pattern source logic
SantosGuillamot Jan 29, 2024
c23c669
Adapt `WP_Block_Bindings_Registry` class
SantosGuillamot Jan 29, 2024
9ca57ac
Adapt block bindings methods
SantosGuillamot Jan 29, 2024
5f8c0bd
Override core sources in Gutenberg
SantosGuillamot Jan 29, 2024
9686be1
Use `get_value_callback`
SantosGuillamot Jan 29, 2024
27cb39f
Move `block_bindings_replace_html` to `blocks.php`
SantosGuillamot Jan 29, 2024
9587798
Remove unnecessary `function_exists` checks
SantosGuillamot Jan 29, 2024
056f09b
Load class file only if it doesn't exist
SantosGuillamot Jan 29, 2024
26aebb5
Load class before it is used
SantosGuillamot Jan 29, 2024
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181 changes: 45 additions & 136 deletions lib/compat/wordpress-6.5/block-bindings/block-bindings.php
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Original file line number Diff line number Diff line change
Expand Up @@ -2,162 +2,71 @@
/**
* Block Bindings API
*
* This file contains functions for managing block bindings in WordPress.
* Contains functions for managing block bindings in WordPress.
*
* @since 17.6.0
* @package gutenberg
* @package WordPress
* @subpackage Block Bindings
* @since 6.5.0
*/

/**
* Retrieves the singleton instance of WP_Block_Bindings.
* Registers a new block bindings source.
*
* @return WP_Block_Bindings The WP_Block_Bindings instance.
*/
if ( ! function_exists( 'wp_block_bindings' ) ) {
function wp_block_bindings() {
static $instance = null;
if ( is_null( $instance ) ) {
$instance = new WP_Block_Bindings();
}
return $instance;
}
}

/**
* Registers a new source for block bindings.
* 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.
* @param array $source_properties The array of arguments that are used to register a source. The array has two elements:
* 1. string $label The label of the source.
* 2. callback $apply A callback
* executed when the source is processed during
* block rendering. The callback should have the
* following signature:
* @param string $source_name The name of the source.
* @param array $source_properties {
* The array of arguments that are used to register a source.
*
* `function (object $source_attrs, object $block_instance, string $attribute_name): string`
* - @param object $source_attrs: Object containing source ID used to look up the override value, i.e. {"value": "{ID}"}.
* - @param object $block_instance: The block instance.
* - @param string $attribute_name: The name of an attribute used to retrieve an override value from the block context.
* The callback should return a string that will be used to override the block's original value.
* @type string $label The label of the source.
* @type callback $get_value_callback A callback executed when the source is processed during block rendering.
* The callback should have the following signature:
*
* @return void
* `function ($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.
* }
* @return array|false Source when the registration was successful, or `false` on failure.
*/
if ( ! function_exists( 'wp_block_bindings_register_source' ) ) {
function wp_block_bindings_register_source( $source_name, array $source_properties ) {
wp_block_bindings()->register_source( $source_name, $source_properties );
if ( ! function_exists( 'register_block_bindings_source' ) ) {
function register_block_bindings_source( $source_name, array $source_properties ) {
return WP_Block_Bindings_Registry::get_instance()->register( $source_name, $source_properties );
}
}

/**
* Retrieves the list of registered block sources.
* Unregisters a block bindings source.
*
* @return array The list of registered block sources.
* @since 6.5.0
*
* @param string $source_name Block bindings source name including namespace.
* @return array|false The unregistred block bindings source on success and `false` otherwise.
*/
if ( ! function_exists( 'wp_block_bindings_get_sources' ) ) {
function wp_block_bindings_get_sources() {
return wp_block_bindings()->get_sources();
if ( ! function_exists( 'unregister_block_bindings_source' ) ) {
function unregister_block_bindings_source( $source_name ) {
return WP_Block_Bindings_Registry::get_instance()->unregister( $source_name );
}
}

/**
* Replaces the HTML content of a block based on the provided source value.
* Retrieves the list of all registered block bindings sources.
*
* @since 6.5.0
*
* @param string $block_content Block Content.
* @param string $block_name The name of the block to process.
* @param string $block_attr The attribute of the block we want to process.
* @param string $source_value The value used to replace the HTML.
* @return string The modified block content.
* @return array The array of registered block bindings sources.
*/
function gutenberg_block_bindings_replace_html( $block_content, $block_name, $block_attr, $source_value ) {
$block_type = WP_Block_Type_Registry::get_instance()->get_registered( $block_name );
if ( null === $block_type ) {
return;
}

// Depending on the attribute source, the processing will be different.
switch ( $block_type->attributes[ $block_attr ]['source'] ) {
case 'html':
case 'rich-text':
$block_reader = new WP_HTML_Tag_Processor( $block_content );

// TODO: Support for CSS selectors whenever they are ready in the HTML API.
// In the meantime, support comma-separated selectors by exploding them into an array.
$selectors = explode( ',', $block_type->attributes[ $block_attr ]['selector'] );
// Add a bookmark to the first tag to be able to iterate over the selectors.
$block_reader->next_tag();
$block_reader->set_bookmark( 'iterate-selectors' );

// TODO: This shouldn't be needed when the `set_inner_html` function is ready.
// Store the parent tag and its attributes to be able to restore them later in the button.
// The button block has a wrapper while the paragraph and heading blocks don't.
if ( 'core/button' === $block_name ) {
$button_wrapper = $block_reader->get_tag();
$button_wrapper_attribute_names = $block_reader->get_attribute_names_with_prefix( '' );
$button_wrapper_attrs = array();
foreach ( $button_wrapper_attribute_names as $name ) {
$button_wrapper_attrs[ $name ] = $block_reader->get_attribute( $name );
}
}

foreach ( $selectors as $selector ) {
// If the parent tag, or any of its children, matches the selector, replace the HTML.
if ( strcasecmp( $block_reader->get_tag( $selector ), $selector ) === 0 || $block_reader->next_tag(
array(
'tag_name' => $selector,
)
) ) {
$block_reader->release_bookmark( 'iterate-selectors' );

// TODO: Use `set_inner_html` method whenever it's ready in the HTML API.
// Until then, it is hardcoded for the paragraph, heading, and button blocks.
// Store the tag and its attributes to be able to restore them later.
$selector_attribute_names = $block_reader->get_attribute_names_with_prefix( '' );
$selector_attrs = array();
foreach ( $selector_attribute_names as $name ) {
$selector_attrs[ $name ] = $block_reader->get_attribute( $name );
}
$selector_markup = "<$selector>" . wp_kses_post( $source_value ) . "</$selector>";
$amended_content = new WP_HTML_Tag_Processor( $selector_markup );
$amended_content->next_tag();
foreach ( $selector_attrs as $attribute_key => $attribute_value ) {
$amended_content->set_attribute( $attribute_key, $attribute_value );
}
if ( 'core/paragraph' === $block_name || 'core/heading' === $block_name ) {
return $amended_content->get_updated_html();
}
if ( 'core/button' === $block_name ) {
$button_markup = "<$button_wrapper>{$amended_content->get_updated_html()}</$button_wrapper>";
$amended_button = new WP_HTML_Tag_Processor( $button_markup );
$amended_button->next_tag();
foreach ( $button_wrapper_attrs as $attribute_key => $attribute_value ) {
$amended_button->set_attribute( $attribute_key, $attribute_value );
}
return $amended_button->get_updated_html();
}
} else {
$block_reader->seek( 'iterate-selectors' );
}
}
$block_reader->release_bookmark( 'iterate-selectors' );
return $block_content;

case 'attribute':
$amended_content = new WP_HTML_Tag_Processor( $block_content );
if ( ! $amended_content->next_tag(
array(
// TODO: build the query from CSS selector.
'tag_name' => $block_type->attributes[ $block_attr ]['selector'],
)
) ) {
return $block_content;
}
$amended_content->set_attribute( $block_type->attributes[ $block_attr ]['attribute'], esc_attr( $source_value ) );
return $amended_content->get_updated_html();
break;

default:
return $block_content;
break;
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();
}
return;
}
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