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<?php |
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/** |
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* Block level presets support. |
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* |
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* @package gutenberg |
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*/ |
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|
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/** |
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* Get the class name used on block level presets. |
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* |
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* @access private |
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* |
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* @param array $block Block object. |
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* @return string The unique class name. |
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*/ |
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function _gutenberg_get_presets_class_name( $block ) { |
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return 'wp-settings-' . md5( serialize( $block ) ); |
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} |
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|
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/** |
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* Update the block content with block level presets class name. |
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* |
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* @access private |
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* |
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* @param string $block_content Rendered block content. |
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* @param array $block Block object. |
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* @return string Filtered block content. |
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*/ |
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function _gutenberg_add_block_level_presets_class( $block_content, $block ) { |
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if ( ! $block_content ) { |
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return $block_content; |
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} |
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|
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// return early if the block doesn't have support for settings. |
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$block_type = WP_Block_Type_Registry::get_instance()->get_registered( $block['blockName'] ); |
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if ( ! block_has_support( $block_type, array( '__experimentalSettings' ), false ) ) { |
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return $block_content; |
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} |
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|
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// return early if no settings are found on the block attributes. |
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$block_settings = _wp_array_get( $block, array( 'attrs', 'settings' ), null ); |
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if ( empty( $block_settings ) ) { |
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return $block_content; |
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} |
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|
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$class_name = _gutenberg_get_presets_class_name( $block ); |
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|
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// Like the layout hook this assumes the hook only applies to blocks with a single wrapper. |
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// Retrieve the opening tag of the first HTML element. |
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$html_element_matches = array(); |
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preg_match( '/<[^>]+>/', $block_content, $html_element_matches, PREG_OFFSET_CAPTURE ); |
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$first_element = $html_element_matches[0][0]; |
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// If the first HTML element has a class attribute just add the new class |
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// as we do on layout and duotone. |
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if ( strpos( $first_element, 'class="' ) !== false ) { |
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$content = preg_replace( |
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'/' . preg_quote( 'class="', '/' ) . '/', |
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'class="' . $class_name . ' ', |
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$block_content, |
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1 |
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); |
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} else { |
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// If the first HTML element has no class attribute we should inject the attribute before the attribute at the end. |
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$first_element_offset = $html_element_matches[0][1]; |
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$content = substr_replace( $block_content, ' class="' . $class_name . '"', $first_element_offset + strlen( $first_element ) - 1, 0 ); |
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} |
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|
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return $content; |
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} |
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|
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/** |
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* Render the block level presets stylesheet. |
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* |
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* @access private |
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* |
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* @param string|null $pre_render The pre-rendered content. Default null. |
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* @param array $block The block being rendered. |
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* |
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* @return null |
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*/ |
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function _gutenberg_add_block_level_preset_styles( $pre_render, $block ) { |
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// Return early if the block has not support for descendent block styles. |
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$block_type = WP_Block_Type_Registry::get_instance()->get_registered( $block['blockName'] ); |
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if ( ! block_has_support( $block_type, array( '__experimentalSettings' ), false ) ) { |
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return null; |
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} |
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|
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// return early if no settings are found on the block attributes. |
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$block_settings = _wp_array_get( $block, array( 'attrs', 'settings' ), null ); |
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if ( empty( $block_settings ) ) { |
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return null; |
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} |
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|
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$class_name = '.' . _gutenberg_get_presets_class_name( $block ); |
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|
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// the root selector for preset variables needs to target every possible block selector |
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// in order for the general setting to override any bock specific setting of a parent block or |
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// the site root. |
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$variables_root_selector = '*,[class*="wp-block"]'; |
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$registry = WP_Block_Type_Registry::get_instance(); |
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$blocks = $registry->get_all_registered(); |
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foreach ( $blocks as $block_type ) { |
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if ( |
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isset( $block_type->supports['__experimentalSelector'] ) && |
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is_string( $block_type->supports['__experimentalSelector'] ) |
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) { |
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$variables_root_selector .= ',' . $block_type->supports['__experimentalSelector']; |
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} |
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} |
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$variables_root_selector = WP_Theme_JSON_6_1::scope_selector( $class_name, $variables_root_selector ); |
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|
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// Remove any potentially unsafe styles. |
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$theme_json_shape = WP_Theme_JSON_Gutenberg::remove_insecure_properties( |
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array( |
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'version' => WP_Theme_JSON_Gutenberg::LATEST_SCHEMA, |
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'settings' => $block_settings, |
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) |
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); |
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$theme_json_object = new WP_Theme_JSON_Gutenberg( $theme_json_shape ); |
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|
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$styles = ''; |
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|
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// include preset css variables declaration on the stylesheet. |
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$styles .= $theme_json_object->get_stylesheet( |
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array( 'variables' ), |
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null, |
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array( |
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'root_selector' => $variables_root_selector, |
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'scope' => $class_name, |
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) |
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); |
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|
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// include preset css classes on the the stylesheet. |
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$styles .= $theme_json_object->get_stylesheet( |
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array( 'presets' ), |
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null, |
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array( |
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'root_selector' => $class_name . ',' . $class_name . ' *', |
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'scope' => $class_name, |
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) |
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); |
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|
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if ( ! empty( $styles ) ) { |
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gutenberg_enqueue_block_support_styles( $styles ); |
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} |
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|
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return null; |
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} |
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|
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add_filter( 'render_block', '_gutenberg_add_block_level_presets_class', 10, 2 ); |
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add_filter( 'pre_render_block', '_gutenberg_add_block_level_preset_styles', 10, 2 ); |
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|
