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<?php
/**
* Interactivity API: Functions and hooks
*
* @package WordPress
* @subpackage Interactivity API
* @since 6.5.0
*/
/**
* Processes the directives on the rendered HTML of the interactive blocks.
*
* This processes only one root interactive block at a time because the
* rendered HTML of that block contains the rendered HTML of all its inner
* blocks, including any interactive block. It does so by ignoring all the
* interactive inner blocks until the root interactive block is processed.
*
* @since 6.5.0
*
* @param array $parsed_block The parsed block.
* @return array The same parsed block.
*/
function wp_interactivity_process_directives_of_interactive_blocks( array $parsed_block ): array {
static $root_interactive_block = null;
/*
* Checks whether a root interactive block is already annotated for
* processing, and if it is, it ignores the subsequent ones.
*/
if ( null === $root_interactive_block ) {
$block_name = $parsed_block['blockName'];
$block_type = WP_Block_Type_Registry::get_instance()->get_registered( $block_name );
if (
isset( $block_name ) &&
( ( isset( $block_type->supports['interactivity'] ) && true === $block_type->supports['interactivity'] ) ||
( isset( $block_type->supports['interactivity']['interactive'] ) && true === $block_type->supports['interactivity']['interactive'] ) )
) {
// Annotates the root interactive block for processing.
$root_interactive_block = array( $block_name, $parsed_block );
/*
* Adds a filter to process the root interactive block once it has
* finished rendering.
*/
$process_interactive_blocks = static function ( string $content, array $parsed_block ) use ( &$root_interactive_block, &$process_interactive_blocks ): string {
// Checks whether the current block is the root interactive block.
list($root_block_name, $root_parsed_block) = $root_interactive_block;
if ( $root_block_name === $parsed_block['blockName'] && $parsed_block === $root_parsed_block ) {
// The root interactive blocks has finished rendering, process it.
$content = wp_interactivity_process_directives( $content );
// Removes the filter and reset the root interactive block.
remove_filter( 'render_block_' . $parsed_block['blockName'], $process_interactive_blocks );
$root_interactive_block = null;
}
return $content;
};
/*
* Uses a priority of 100 to ensure that other filters can add additional
* directives before the processing starts.
*/
add_filter( 'render_block_' . $block_name, $process_interactive_blocks, 100, 2 );
}
}
return $parsed_block;
}
/*
* Uses a priority of 100 to ensure that other filters can add additional attributes to
* $parsed_block before the processing starts.
*/
add_filter( 'render_block_data', 'wp_interactivity_process_directives_of_interactive_blocks', 100, 1 );
/**
* Retrieves the main WP_Interactivity_API instance.
*
* It provides access to the WP_Interactivity_API instance, creating one if it
* doesn't exist yet.
*
* @since 6.5.0
*
* @global WP_Interactivity_API $wp_interactivity
*
* @return WP_Interactivity_API The main WP_Interactivity_API instance.
*/
function wp_interactivity(): WP_Interactivity_API {
global $wp_interactivity;
if ( ! ( $wp_interactivity instanceof WP_Interactivity_API ) ) {
$wp_interactivity = new WP_Interactivity_API();
}
return $wp_interactivity;
}
/**
* Processes the interactivity directives contained within the HTML content
* and updates the markup accordingly.
*
* @since 6.5.0
*
* @param string $html The HTML content to process.
* @return string The processed HTML content. It returns the original content when the HTML contains unbalanced tags.
*/
function wp_interactivity_process_directives( string $html ): string {
return wp_interactivity()->process_directives( $html );
}
/**
* Gets and/or sets the initial state of an Interactivity API store for a
* given namespace.
*
* If state for that store namespace already exists, it merges the new
* provided state with the existing one.
*
* @since 6.5.0
*
* @param string $store_namespace The unique store namespace identifier.
* @param array $state Optional. The array that will be merged with the existing state for the specified
* store namespace.
* @return array The state for the specified store namespace. This will be the updated state if a $state argument was
* provided.
*/
function wp_interactivity_state( string $store_namespace, array $state = array() ): array {
return wp_interactivity()->state( $store_namespace, $state );
}
/**
* Gets and/or sets the configuration of the Interactivity API for a given
* store namespace.
*
* If configuration for that store namespace exists, it merges the new
* provided configuration with the existing one.
*
* @since 6.5.0
*
* @param string $store_namespace The unique store namespace identifier.
* @param array $config Optional. The array that will be merged with the existing configuration for the
* specified store namespace.
* @return array The configuration for the specified store namespace. This will be the updated configuration if a
* $config argument was provided.
*/
function wp_interactivity_config( string $store_namespace, array $config = array() ): array {
return wp_interactivity()->config( $store_namespace, $config );
}
/**
* Generates a `data-wp-context` directive attribute by encoding a context
* array.
*
* This helper function simplifies the creation of `data-wp-context` directives
* by providing a way to pass an array of data, which encodes into a JSON string
* safe for direct use as a HTML attribute value.
*
* Example:
*
* <div <?php echo wp_interactivity_data_wp_context( array( 'isOpen' => true, 'count' => 0 ) ); ?>>
*
* @since 6.5.0
*
* @param array $context The array of context data to encode.
* @param string $store_namespace Optional. The unique store namespace identifier.
* @return string A complete `data-wp-context` directive with a JSON encoded value representing the context array and
* the store namespace if specified.
*/
function wp_interactivity_data_wp_context( array $context, string $store_namespace = '' ): string {
return 'data-wp-context=\'' .
( $store_namespace ? $store_namespace . '::' : '' ) .
( empty( $context ) ? '{}' : wp_json_encode( $context, JSON_HEX_TAG | JSON_HEX_APOS | JSON_HEX_QUOT | JSON_HEX_AMP ) ) .
'\'';
}