Move supported blocks to private variables

src/wp-includes/class-wp-block-bindings-registry.php

@@ -33,12 +33,12 @@ final class WP_Block_Bindings_Registry {
 	private static $instance = null;
 
 	/**
-	 * Allowed block that can use the block bindings API.
+	 * Supported blocks that can use the block bindings API.
 	 *
 	 * @since 6.5.0
 	 * @var WP_Block_Bindings_Registry[]
 	 */
-	public $allowed_blocks = array(
+	private $supported_blocks = array(
 		'core/paragraph' => array( 'content' ),
 		'core/heading'   => array( 'content' ),
 		'core/image'     => array( 'url', 'title', 'alt' ),
@@ -162,8 +162,7 @@ public function register( string $source_name, array $source_properties ) {
 		add_filter(
 			'get_block_type_uses_context',
 			function ( $uses_context, $block_type ) use ( $source ) {
-				$allowed_blocks = $this->allowed_blocks;
-				if ( empty( $allowed_blocks[ $block_type->name ] ) || empty( $source->uses_context ) ) {
+				if ( empty( $this->supported_blocks[ $block_type->name ] ) || empty( $source->uses_context ) ) {
 					return $uses_context;
 				}
 				// Use array_values to reset the array keys.

src/wp-includes/class-wp-block.php

@@ -235,21 +235,26 @@ private function process_block_bindings() {
 
 		$computed_attributes = array();
 
-		$allowed_blocks = WP_Block_Bindings_Registry::get_instance()->allowed_blocks;
+		$supported_blocks = array(
+			'core/paragraph' => array( 'content' ),
+			'core/heading'   => array( 'content' ),
+			'core/image'     => array( 'url', 'title', 'alt' ),
+			'core/button'    => array( 'url', 'text', 'linkTarget', 'rel' ),
+		);
 
-		// If the block doesn't have the bindings property, isn't one of the allowed
+		// If the block doesn't have the bindings property, isn't one of the supported
 		// block types, or the bindings property is not an array, return the block content.
 		if (
-			! isset( $allowed_blocks[ $this->name ] ) ||
+			! isset( $supported_blocks[ $this->name ] ) ||
 			empty( $parsed_block['attrs']['metadata']['bindings'] ) ||
 			! is_array( $parsed_block['attrs']['metadata']['bindings'] )
 		) {
 			return $computed_attributes;
 		}
 
 		foreach ( $parsed_block['attrs']['metadata']['bindings'] as $attribute_name => $block_binding ) {
-			// If the attribute is not in the allowed list, process next attribute.
-			if ( ! in_array( $attribute_name, $allowed_blocks[ $this->name ], true ) ) {
+			// If the attribute is not in the supported list, process next attribute.
+			if ( ! in_array( $attribute_name, $supported_blocks[ $this->name ], true ) ) {
 				continue;
 			}
 			// If no source is provided, or that source is not registered, process next attribute.