wp_render_block_style_variation_support_styles( array $parsed_block ): array

Description

Compatibility

Present in every tracked release (6.7.7 to 7.1.0), and compiles on PHP 7.4 through 8.6-dev.

Parameters

$parsed_blockarray

The parsed block.

Return value

array

The parsed block with block style variation classname added.

Performance profile

How much work a call to wp_render_block_style_variation_support_styles() does, and what it touches: the algorithmic scaling, the Zend instruction count per call across PHP versions, the hooks it hands control to, and the core code that calls it. Measured from the compiled opcodes, not a stopwatch, so every number is identical on any machine running the same PHP version, and every function in core is ranked by cost.

Cost class

Light

Touches nothing outside its own arguments.

Scaling

Scales with input

The body loops, so the work grows with what you pass in.

Instructions

11–144

Executed per call on PHP 8.5, depending on the branch taken. The body compiles to 147.

Plugin surface

None

Nothing here hands control to plugin code.

Called by

0

Nothing in core calls this; the cost is only what you spend yourself.

What one call costs · 10 distinct outcomes

One number would be a lie: the work depends on which branch runs. These are every distinct cost wp_render_block_style_variation_support_styles() can have, taken from its control-flow graph on PHP 8.5.

Uses · 12

• wp_get_block_style_variation_name_from_class()Determines the block style variation names within a CSS class string.
• wp_resolve_block_style_variation_ref_values()Recursively resolves any `ref` values within a block style variation's data.
• wp_unique_id()Gets unique ID.
• _wp_array_set()Sets an array in depth based on a path of keys.
• is_admin()Determines whether the current request is for an administrative interface page.
• remove_filter()Removes a callback function from a filter hook.
• add_filter()Adds a callback function to a filter hook.
• wp_register_style()Registers a CSS stylesheet.
• wp_add_inline_style()Adds extra CSS styles to a registered stylesheet.
• WP_Theme_JSON_Resolver::get_merged_data()Returns the data merged from multiple origins.
• WP_Block_Styles_Registry::get_instance()Utility method to retrieve the main instance of the class.
• WP_Theme_JSON::__construct()Constructor.

Source code

View on Trac ↗View on GitHub ↗

81function wp_render_block_style_variation_support_styles( $parsed_block ) {82	$classes    = $parsed_block['attrs']['className'] ?? null;83	$variations = wp_get_block_style_variation_name_from_class( $classes );84 85	if ( ! $variations ) {86		return $parsed_block;87	}88 89	$tree       = WP_Theme_JSON_Resolver::get_merged_data();90	$theme_json = $tree->get_raw_data();91 92	// Only the first block style variation with data is supported.93	$variation_data = array();94	foreach ( $variations as $variation ) {95		$variation_data = $theme_json['styles']['blocks'][ $parsed_block['blockName'] ]['variations'][ $variation ] ?? array();96 97		if ( ! empty( $variation_data ) ) {98			break;99		}100	}101 102	if ( empty( $variation_data ) ) {103		return $parsed_block;104	}105 106	/*107	 * Recursively resolve any ref values with the appropriate value within the108	 * theme_json data.109	 */110	wp_resolve_block_style_variation_ref_values( $variation_data, $theme_json );111 112	$variation_instance = wp_unique_id( $variation . '--' );113	$class_name         = "is-style-$variation_instance";114	$updated_class_name = $parsed_block['attrs']['className'] . " $class_name";115 116	/*117	 * Even though block style variations are effectively theme.json partials,118	 * they can't be processed completely as though they are.119	 *120	 * Block styles support custom selectors to direct specific types of styles121	 * to inner elements. For example, borders on Image block's get applied to122	 * the inner `img` element rather than the wrapping `figure`.123	 *124	 * The following relocates the "root" block style variation styles to125	 * under an appropriate blocks property to leverage the preexisting style126	 * generation for simple block style variations. This way they get the127	 * custom selectors they need.128	 *129	 * The inner elements and block styles for the variation itself are130	 * still included at the top level but scoped by the variation's selector131	 * when the stylesheet is generated.132	 */133	$elements_data = $variation_data['elements'] ?? array();134	$blocks_data   = $variation_data['blocks'] ?? array();135	unset( $variation_data['elements'] );136	unset( $variation_data['blocks'] );137 138	_wp_array_set(139		$blocks_data,140		array( $parsed_block['blockName'], 'variations', $variation_instance ),141		$variation_data142	);143 144	$config = array(145		'version'  => WP_Theme_JSON::LATEST_SCHEMA,146		'settings' => array(147			'spacing' => array(148				'blockGap' => true,149			),150		),151		'styles'   => array(152			'elements' => $elements_data,153			'blocks'   => $blocks_data,154		),155	);156 157	// Ensure variation state styles know about any custom viewport breakpoints.158	if ( isset( $theme_json['settings']['viewport'] ) ) {159		$config['settings']['viewport'] = $theme_json['settings']['viewport'];160	}

Changelog

Introduced in 6.6.0. Unchanged from 6.7.7 through 7.1.0.

1. 6.7.7
2. 6.8.8
3. 6.9.7
4. 7.0.4
5. 7.1.0

Signature, return type and hooks compared across 5 parsed releases.

About this page

Parsed data

Generated from the wordpress-develop 7.1.0 tag, from src/wp-includes/block-supports/block-style-variations.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.

Corrections

Something wrong on this page? Report it and it gets fixed in the next regeneration.