WP_Interactivity_API::data_wp_style_processor( WP_Interactivity_API_Directives_Processor $p, string $mode, array $context_stack, array $namespace_stack )

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This function’s access is marked private. This means it is not intended for use by plugin or theme developers, only in other core functions. It is listed here for completeness.

Processes the data-wp-style directive.


It updates the style attribute value of the current HTML element based on the evaluation of its associated references.


The directives processor instance.
Whether the processing is entering or exiting the tag.
The reference to the context stack.
The reference to the store namespace stack.


 * stack so that it's available for the nested interactivity elements.
 * @since 6.5.0
 * @param WP_Interactivity_API_Directives_Processor $p    The directives processor instance.
 * @param string                                    $mode Whether the processing is entering or exiting the tag.
private function data_wp_interactive_processor( WP_Interactivity_API_Directives_Processor $p, string $mode ) {
	// When exiting tags, it removes the last namespace from the stack.
	if ( 'exit' === $mode ) {
		array_pop( $this->namespace_stack );

	// Tries to decode the `data-wp-interactive` attribute value.
	$attribute_value = $p->get_attribute( 'data-wp-interactive' );

	 * Pushes the newly defined namespace or the current one if the
	 * `data-wp-interactive` definition was invalid or does not contain a
	 * namespace. It does so because the function pops out the current namespace
	 * from the stack whenever it finds a `data-wp-interactive`'s closing tag,
	 * independently of whether the previous `data-wp-interactive` definition
	 * contained a valid namespace.
	$new_namespace = null;
	if ( is_string( $attribute_value ) && ! empty( $attribute_value ) ) {
		$decoded_json = json_decode( $attribute_value, true );
		if ( is_array( $decoded_json ) ) {
			$new_namespace = $decoded_json['namespace'] ?? null;
		} else {
			$new_namespace = $attribute_value;
	$this->namespace_stack[] = ( $new_namespace && 1 === preg_match( '/^([\w\-_\/]+)/', $new_namespace ) )



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