<?php
/**
* Dimensions block support flag.
*
* This does not include the `spacing` block support even though that visually
* appears under the "Dimensions" panel in the editor. It remains in its
* original `spacing.php` file for compatibility with core.
*
* @package WordPress
* @since 5.9.0
*/
/**
* Registers the style block attribute for block types that support it.
*
* @since 5.9.0
* @access private
*
* @param WP_Block_Type $block_type Block Type.
*/
function wp_register_dimensions_support( $block_type ) {
// Setup attributes and styles within that if needed.
if ( ! $block_type->attributes ) {
$block_type->attributes = array();
}
// Check for existing style attribute definition e.g. from block.json.
if ( array_key_exists( 'style', $block_type->attributes ) ) {
return;
}
$has_dimensions_support = block_has_support( $block_type, 'dimensions', false );
if ( $has_dimensions_support ) {
$block_type->attributes['style'] = array(
'type' => 'object',
);
}
}
/**
* Adds CSS classes for block dimensions to the incoming attributes array.
* This will be applied to the block markup in the front-end.
*
* @since 5.9.0
* @since 6.2.0 Added `minHeight` support.
* @access private
*
* @param WP_Block_Type $block_type Block Type.
* @param array $block_attributes Block attributes.
* @return array Block dimensions CSS classes and inline styles.
*/
function wp_apply_dimensions_support( $block_type, $block_attributes ) {
if ( wp_should_skip_block_supports_serialization( $block_type, 'dimensions' ) ) {
return array();
}
$attributes = array();
// Width support to be added in near future.
$has_min_height_support = block_has_support( $block_type, array( 'dimensions', 'minHeight' ), false );
$block_styles = isset( $block_attributes['style'] ) ? $block_attributes['style'] : null;
if ( ! $block_styles ) {
return $attributes;
}
$skip_min_height = wp_should_skip_block_supports_serialization( $block_type, 'dimensions', 'minHeight' );
$dimensions_block_styles = array();
$dimensions_block_styles['minHeight'] = null;
if ( $has_min_height_support && ! $skip_min_height ) {
$dimensions_block_styles['minHeight'] = isset( $block_styles['dimensions']['minHeight'] )
? $block_styles['dimensions']['minHeight']
: null;
}
$styles = wp_style_engine_get_styles( array( 'dimensions' => $dimensions_block_styles ) );
if ( ! empty( $styles['css'] ) ) {
$attributes['style'] = $styles['css'];
}
return $attributes;
}
/**
* Renders server-side dimensions styles to the block wrapper.
* This block support uses the `render_block` hook to ensure that
* it is also applied to non-server-rendered blocks.
*
* @since 6.5.0
* @access private
*
* @param string $block_content Rendered block content.
* @param array $block Block object.
* @return string Filtered block content.
*/
function wp_render_dimensions_support( $block_content, $block ) {
$block_type = WP_Block_Type_Registry::get_instance()->get_registered( $block['blockName'] );
$block_attributes = ( isset( $block['attrs'] ) && is_array( $block['attrs'] ) ) ? $block['attrs'] : array();
$has_aspect_ratio_support = block_has_support( $block_type, array( 'dimensions', 'aspectRatio' ), false );
if (
! $has_aspect_ratio_support ||
wp_should_skip_block_supports_serialization( $block_type, 'dimensions', 'aspectRatio' )
) {
return $block_content;
}
$dimensions_block_styles = array();
$dimensions_block_styles['aspectRatio'] = $block_attributes['style']['dimensions']['aspectRatio'] ?? null;
// To ensure the aspect ratio does not get overridden by `minHeight` unset any existing rule.
if (
isset( $dimensions_block_styles['aspectRatio'] )
) {
$dimensions_block_styles['minHeight'] = 'unset';
} elseif (
isset( $block_attributes['style']['dimensions']['minHeight'] ) ||
isset( $block_attributes['minHeight'] )
) {
$dimensions_block_styles['aspectRatio'] = 'unset';
}
$styles = wp_style_engine_get_styles( array( 'dimensions' => $dimensions_block_styles ) );
if ( ! empty( $styles['css'] ) ) {
// Inject dimensions styles to the first element, presuming it's the wrapper, if it exists.
$tags = new WP_HTML_Tag_Processor( $block_content );
if ( $tags->next_tag() ) {
$existing_style = $tags->get_attribute( 'style' );
$updated_style = '';
if ( ! empty( $existing_style ) ) {
$updated_style = $existing_style;
if ( ! str_ends_with( $existing_style, ';' ) ) {
$updated_style .= ';';
}
}
$updated_style .= $styles['css'];
$tags->set_attribute( 'style', $updated_style );
if ( ! empty( $styles['classnames'] ) ) {
foreach ( explode( ' ', $styles['classnames'] ) as $class_name ) {
if (
str_contains( $class_name, 'aspect-ratio' ) &&
! isset( $block_attributes['style']['dimensions']['aspectRatio'] )
) {
continue;
}
$tags->add_class( $class_name );
}
}
}
return $tags->get_updated_html();
}
return $block_content;
}
add_filter( 'render_block', 'wp_render_dimensions_support', 10, 2 );
// Register the block support.
WP_Block_Supports::get_instance()->register(
'dimensions',
array(
'register_attribute' => 'wp_register_dimensions_support',
'apply' => 'wp_apply_dimensions_support',
)
);
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