WP_Theme_JSON::remove_insecure_properties( array $theme_json ): array

Source

			 * This prevents these spaces breaking compound selectors such as:
			 * - `.wp-block-list:not(.wp-block-list .wp-block-list)`
			 * - `.wp-block-image img, .wp-block-image.my-class img`
			 */
			$clean_current_selector = preg_replace( '/,\s+/', ',', $current_selector );
			$shortened_selector     = str_replace( $block_metadata['selector'], '', $clean_current_selector );

			// Prepend the variation selector to the current selector.
			$split_selectors    = explode( ',', $shortened_selector );
			$updated_selectors  = array_map(
				static function ( $split_selector ) use ( $clean_style_variation_selector ) {
					return $clean_style_variation_selector . $split_selector;
				},
				$split_selectors
			);
			$combined_selectors = implode( ',', $updated_selectors );

			// Add the new declarations to the overall results under the modified selector.
			$style_variation_declarations[ $combined_selectors ] = $new_declarations;
		}

		// Compute declarations for remaining styles not covered by feature level selectors.
		$style_variation_declarations[ $style_variation['selector'] ] = static::compute_style_properties( $style_variation_node, $settings, null, $this->theme_json );
		// Store custom CSS for the style variation.
		if ( isset( $style_variation_node['css'] ) ) {
			$style_variation_custom_css[ $style_variation['selector'] ] = $this->process_blocks_custom_css( $style_variation_node['css'], $style_variation['selector'] );
		}
	}
}
/*
 * Get a reference to element name from path.
 * $block_metadata['path'] = array( 'styles','elements','link' );
 * Make sure that $block_metadata['path'] describes an element node, like [ 'styles', 'element', 'link' ].
 * Skip non-element paths like just ['styles'].
 */
$is_processing_element = in_array( 'elements', $block_metadata['path'], true );

$current_element = $is_processing_element ? $block_metadata['path'][ count( $block_metadata['path'] ) - 1 ] : null;

$element_pseudo_allowed = array();

if ( isset( static::VALID_ELEMENT_PSEUDO_SELECTORS[ $current_element ] ) ) {
	$element_pseudo_allowed = static::VALID_ELEMENT_PSEUDO_SELECTORS[ $current_element ];
}

/*
 * Check for allowed pseudo classes (e.g. ":hover") from the $selector ("a:hover").
 * This also resets the array keys.
 */
$pseudo_matches = array_values(
	array_filter(
		$element_pseudo_allowed,
		static function ( $pseudo_selector ) use ( $selector ) {
			/*
			 * Check if the pseudo selector is in the current selector,
			 * ensuring it is not followed by a dash (e.g., :focus should not match :focus-visible).
			 */
			return preg_match( '/' . preg_quote( $pseudo_selector, '/' ) . '(?!-)/', $selector ) === 1;
		}
	)
);

$pseudo_selector = isset( $pseudo_matches[0] ) ? $pseudo_matches[0] : null;

/*
 * If the current selector is a pseudo selector that's defined in the allow list for the current
 * element then compute the style properties for it.
 * Otherwise just compute the styles for the default selector as normal.
 */
if ( $pseudo_selector && isset( $node[ $pseudo_selector ] ) &&
	isset( static::VALID_ELEMENT_PSEUDO_SELECTORS[ $current_element ] )
	&& in_array( $pseudo_selector, static::VALID_ELEMENT_PSEUDO_SELECTORS[ $current_element ], true )
) {
	$declarations = static::compute_style_properties( $node[ $pseudo_selector ], $settings, null, $this->theme_json, $selector, $use_root_padding );
} else {
	$declarations = static::compute_style_properties( $node, $settings, null, $this->theme_json, $selector, $use_root_padding );
}

$block_rules = '';

/*
 * 1. Bespoke declaration modifiers:
 * - 'filter': Separate the declarations that use the general selector
 * from the ones using the duotone selector.
 * - 'background|background-image': set the html min-height to 100%
 * to ensure the background covers the entire viewport.

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