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Editing: elements.php
<?php /** * Elements styles block support. * * @package WordPress * @since 5.8.0 */ /** * Gets the elements class names. * * @since 6.0.0 * @access private * * @param array $block Block object. * @return string The unique class name. */ function wp_get_elements_class_name( $block ) { return 'wp-elements-' . md5( serialize( $block ) ); } /** * Determines whether an elements class name should be added to the block. * * @since 6.6.0 * @access private * * @param array $block Block object. * @param array $options Per element type options e.g. whether to skip serialization. * @return bool Whether the block needs an elements class name. */ function wp_should_add_elements_class_name( $block, $options ) { if ( ! isset( $block['attrs']['style']['elements'] ) ) { return false; } $element_color_properties = array( 'button' => array( 'skip' => $options['button']['skip'] ?? false, 'paths' => array( array( 'button', 'color', 'text' ), array( 'button', 'color', 'background' ), array( 'button', 'color', 'gradient' ), ), ), 'link' => array( 'skip' => $options['link']['skip'] ?? false, 'paths' => array( array( 'link', 'color', 'text' ), array( 'link', ':hover', 'color', 'text' ), ), ), 'heading' => array( 'skip' => $options['heading']['skip'] ?? false, 'paths' => array( array( 'heading', 'color', 'text' ), array( 'heading', 'color', 'background' ), array( 'heading', 'color', 'gradient' ), array( 'h1', 'color', 'text' ), array( 'h1', 'color', 'background' ), array( 'h1', 'color', 'gradient' ), array( 'h2', 'color', 'text' ), array( 'h2', 'color', 'background' ), array( 'h2', 'color', 'gradient' ), array( 'h3', 'color', 'text' ), array( 'h3', 'color', 'background' ), array( 'h3', 'color', 'gradient' ), array( 'h4', 'color', 'text' ), array( 'h4', 'color', 'background' ), array( 'h4', 'color', 'gradient' ), array( 'h5', 'color', 'text' ), array( 'h5', 'color', 'background' ), array( 'h5', 'color', 'gradient' ), array( 'h6', 'color', 'text' ), array( 'h6', 'color', 'background' ), array( 'h6', 'color', 'gradient' ), ), ), ); $elements_style_attributes = $block['attrs']['style']['elements']; foreach ( $element_color_properties as $element_config ) { if ( $element_config['skip'] ) { continue; } foreach ( $element_config['paths'] as $path ) { if ( null !== _wp_array_get( $elements_style_attributes, $path, null ) ) { return true; } } } return false; } /** * Render the elements stylesheet and adds elements class name to block as required. * * In the case of nested blocks we want the parent element styles to be rendered before their descendants. * This solves the issue of an element (e.g.: link color) being styled in both the parent and a descendant: * we want the descendant style to take priority, and this is done by loading it after, in DOM order. * * @since 6.0.0 * @since 6.1.0 Implemented the style engine to generate CSS and classnames. * @since 6.6.0 Element block support class and styles are generated via the `render_block_data` filter instead of `pre_render_block`. * @access private * * @param array $parsed_block The parsed block. * @return array The same parsed block with elements classname added if appropriate. */ function wp_render_elements_support_styles( $parsed_block ) { /* * The generation of element styles and classname were moved to the * `render_block_data` filter in 6.6.0 to avoid filtered attributes * breaking the application of the elements CSS class. * * @link https://github.com/WordPress/gutenberg/pull/59535 * * The change in filter means, the argument types for this function * have changed and require deprecating. */ if ( is_string( $parsed_block ) ) { _deprecated_argument( __FUNCTION__, '6.6.0', __( 'Use as a `pre_render_block` filter is deprecated. Use with `render_block_data` instead.' ) ); } $block_type = WP_Block_Type_Registry::get_instance()->get_registered( $parsed_block['blockName'] ); $element_block_styles = $parsed_block['attrs']['style']['elements'] ?? null; if ( ! $element_block_styles ) { return $parsed_block; } $skip_link_color_serialization = wp_should_skip_block_supports_serialization( $block_type, 'color', 'link' ); $skip_heading_color_serialization = wp_should_skip_block_supports_serialization( $block_type, 'color', 'heading' ); $skip_button_color_serialization = wp_should_skip_block_supports_serialization( $block_type, 'color', 'button' ); $skips_all_element_color_serialization = $skip_link_color_serialization && $skip_heading_color_serialization && $skip_button_color_serialization; if ( $skips_all_element_color_serialization ) { return $parsed_block; } $options = array( 'button' => array( 'skip' => $skip_button_color_serialization ), 'link' => array( 'skip' => $skip_link_color_serialization ), 'heading' => array( 'skip' => $skip_heading_color_serialization ), ); if ( ! wp_should_add_elements_class_name( $parsed_block, $options ) ) { return $parsed_block; } $class_name = wp_get_elements_class_name( $parsed_block ); $updated_class_name = isset( $parsed_block['attrs']['className'] ) ? $parsed_block['attrs']['className'] . " $class_name" : $class_name; _wp_array_set( $parsed_block, array( 'attrs', 'className' ), $updated_class_name ); // Generate element styles based on selector and store in style engine for enqueuing. $element_types = array( 'button' => array( 'selector' => ".$class_name .wp-element-button, .$class_name .wp-block-button__link", 'skip' => $skip_button_color_serialization, ), 'link' => array( 'selector' => ".$class_name a:where(:not(.wp-element-button))", 'hover_selector' => ".$class_name a:where(:not(.wp-element-button)):hover", 'skip' => $skip_link_color_serialization, ), 'heading' => array( 'selector' => ".$class_name h1, .$class_name h2, .$class_name h3, .$class_name h4, .$class_name h5, .$class_name h6", 'skip' => $skip_heading_color_serialization, 'elements' => array( 'h1', 'h2', 'h3', 'h4', 'h5', 'h6' ), ), ); foreach ( $element_types as $element_type => $element_config ) { if ( $element_config['skip'] ) { continue; } $element_style_object = $element_block_styles[ $element_type ] ?? null; // Process primary element type styles. if ( $element_style_object ) { wp_style_engine_get_styles( $element_style_object, array( 'selector' => $element_config['selector'], 'context' => 'block-supports', ) ); if ( isset( $element_style_object[':hover'] ) ) { wp_style_engine_get_styles( $element_style_object[':hover'], array( 'selector' => $element_config['hover_selector'], 'context' => 'block-supports', ) ); } } // Process related elements e.g. h1-h6 for headings. if ( isset( $element_config['elements'] ) ) { foreach ( $element_config['elements'] as $element ) { $element_style_object = $element_block_styles[ $element ] ?? null; if ( $element_style_object ) { wp_style_engine_get_styles( $element_style_object, array( 'selector' => ".$class_name $element", 'context' => 'block-supports', ) ); } } } } return $parsed_block; } /** * Ensure the elements block support class name generated, and added to * block attributes, in the `render_block_data` filter gets applied to the * block's markup. * * @see wp_render_elements_support_styles * @since 6.6.0 * * @param string $block_content Rendered block content. * @param array $block Block object. * @return string Filtered block content. */ function wp_render_elements_class_name( $block_content, $block ) { $class_string = $block['attrs']['className'] ?? ''; preg_match( '/\bwp-elements-\S+\b/', $class_string, $matches ); if ( empty( $matches ) ) { return $block_content; } $tags = new WP_HTML_Tag_Processor( $block_content ); if ( $tags->next_tag() ) { $tags->add_class( $matches[0] ); } return $tags->get_updated_html(); } add_filter( 'render_block', 'wp_render_elements_class_name', 10, 2 ); add_filter( 'render_block_data', 'wp_render_elements_support_styles', 10, 1 );
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