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

In this article

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.

Description

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

Parameters

$pWP_Interactivity_API_Directives_Processorrequired
The directives processor instance.
$modestringrequired
Whether the processing is entering or exiting the tag.
$context_stackarrayrequired
The reference to the context stack.
$namespace_stackarrayrequired
The reference to the store namespace stack.

Source

private function data_wp_style_processor( WP_Interactivity_API_Directives_Processor $p, string $mode, array &$context_stack, array &$namespace_stack ) {
	if ( 'enter' === $mode ) {
		$all_style_attributes = $p->get_attribute_names_with_prefix( 'data-wp-style--' );

		foreach ( $all_style_attributes as $attribute_name ) {
			list( , $style_property ) = $this->extract_prefix_and_suffix( $attribute_name );
			if ( empty( $style_property ) ) {
				continue;
			}

			$directive_attribute_value = $p->get_attribute( $attribute_name );
			$style_property_value      = $this->evaluate( $directive_attribute_value, end( $namespace_stack ), end( $context_stack ) );
			$style_attribute_value     = $p->get_attribute( 'style' );
			$style_attribute_value     = ( $style_attribute_value && ! is_bool( $style_attribute_value ) ) ? $style_attribute_value : '';

			/*
			 * Checks first if the style property is not falsy and the style
			 * attribute value is not empty because if it is, it doesn't need to
			 * update the attribute value.
			 */
			if ( $style_property_value || $style_attribute_value ) {
				$style_attribute_value = $this->merge_style_property( $style_attribute_value, $style_property, $style_property_value );
				/*
				 * If the style attribute value is not empty, it sets it. Otherwise,
				 * it removes it.
				 */
				if ( ! empty( $style_attribute_value ) ) {
					$p->set_attribute( 'style', $style_attribute_value );
				} else {
					$p->remove_attribute( 'style' );
				}
			}
		}
	}
}

Changelog

VersionDescription
6.5.0Introduced.

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