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4e0fbeb04c
Adds the ability for blocks to declare support for CSS box-shadow and processing of necessary styles. Props madhudollu, sabernhardt, ramonopoly, spacedmonkey, mukesh27. Fixes #58590. Built from https://develop.svn.wordpress.org/trunk@56046 git-svn-id: http://core.svn.wordpress.org/trunk@55558 1a063a9b-81f0-0310-95a4-ce76da25c4cd
83 lines
2.1 KiB
PHP
83 lines
2.1 KiB
PHP
<?php
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/**
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* Shadow block support flag.
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*
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* @package WordPress
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* @since 6.3.0
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*/
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/**
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* Registers the style and shadow block attributes for block types that support it.
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*
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* @since 6.3.0
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* @access private
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*
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* @param WP_Block_Type $block_type Block Type.
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*/
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function wp_register_shadow_support( $block_type ) {
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$has_shadow_support = block_has_support( $block_type, array( 'shadow' ), false );
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if ( ! $has_shadow_support ) {
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return;
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}
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if ( ! $block_type->attributes ) {
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$block_type->attributes = array();
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}
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if ( array_key_exists( 'style', $block_type->attributes ) ) {
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$block_type->attributes['style'] = array(
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'type' => 'object',
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);
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}
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if ( array_key_exists( 'shadow', $block_type->attributes ) ) {
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$block_type->attributes['shadow'] = array(
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'type' => 'string',
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);
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}
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}
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/**
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* Add CSS classes and inline styles for shadow features to the incoming attributes array.
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* This will be applied to the block markup in the front-end.
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*
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* @since 6.3.0
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* @access private
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*
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* @param WP_Block_Type $block_type Block type.
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* @param array $block_attributes Block attributes.
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* @return array Shadow CSS classes and inline styles.
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*/
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function wp_apply_shadow_support( $block_type, $block_attributes ) {
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$has_shadow_support = block_has_support( $block_type, array( 'shadow' ), false );
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if ( ! $has_shadow_support ) {
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return array();
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}
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$shadow_block_styles = array();
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$preset_shadow = array_key_exists( 'shadow', $block_attributes ) ? "var:preset|shadow|{$block_attributes['shadow']}" : null;
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$custom_shadow = isset( $block_attributes['style']['shadow'] ) ? $block_attributes['style']['shadow'] : null;
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$shadow_block_styles['shadow'] = $preset_shadow ? $preset_shadow : $custom_shadow;
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$attributes = array();
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$styles = wp_style_engine_get_styles( $shadow_block_styles );
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if ( ! empty( $styles['css'] ) ) {
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$attributes['style'] = $styles['css'];
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}
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return $attributes;
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}
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// Register the block support.
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WP_Block_Supports::get_instance()->register(
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'shadow',
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array(
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'register_attribute' => 'wp_register_shadow_support',
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'apply' => 'wp_apply_shadow_support',
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)
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);
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