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Add: Frontend section presets output (#42124)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,151 @@ | ||
| <?php | ||
| /** | ||
| * Block level presets support. | ||
| * | ||
| * @package gutenberg | ||
| */ | ||
|
|
||
| /** | ||
| * Get the class name used on block level presets. | ||
| * | ||
| * @access private | ||
| * | ||
| * @param array $block Block object. | ||
| * @return string The unique class name. | ||
| */ | ||
| function _gutenberg_get_presets_class_name( $block ) { | ||
| return 'wp-settings-' . md5( serialize( $block ) ); | ||
| } | ||
|
|
||
| /** | ||
| * Update the block content with block level presets class name. | ||
| * | ||
| * @access private | ||
| * | ||
| * @param string $block_content Rendered block content. | ||
| * @param array $block Block object. | ||
| * @return string Filtered block content. | ||
| */ | ||
| function _gutenberg_add_block_level_presets_class( $block_content, $block ) { | ||
| if ( ! $block_content ) { | ||
| return $block_content; | ||
| } | ||
|
|
||
| // return early if the block doesn't have support for settings. | ||
| $block_type = WP_Block_Type_Registry::get_instance()->get_registered( $block['blockName'] ); | ||
| if ( ! block_has_support( $block_type, array( '__experimentalSettings' ), false ) ) { | ||
| return $block_content; | ||
| } | ||
|
|
||
| // return early if no settings are found on the block attributes. | ||
| $block_settings = _wp_array_get( $block, array( 'attrs', 'settings' ), null ); | ||
| if ( empty( $block_settings ) ) { | ||
| return $block_content; | ||
| } | ||
|
|
||
| $class_name = _gutenberg_get_presets_class_name( $block ); | ||
|
|
||
| // Like the layout hook this assumes the hook only applies to blocks with a single wrapper. | ||
| // Retrieve the opening tag of the first HTML element. | ||
| $html_element_matches = array(); | ||
| preg_match( '/<[^>]+>/', $block_content, $html_element_matches, PREG_OFFSET_CAPTURE ); | ||
| $first_element = $html_element_matches[0][0]; | ||
| // If the first HTML element has a class attribute just add the new class | ||
| // as we do on layout and duotone. | ||
| if ( strpos( $first_element, 'class="' ) !== false ) { | ||
| $content = preg_replace( | ||
| '/' . preg_quote( 'class="', '/' ) . '/', | ||
| 'class="' . $class_name . ' ', | ||
| $block_content, | ||
| 1 | ||
| ); | ||
| } else { | ||
| // If the first HTML element has no class attribute we should inject the attribute before the attribute at the end. | ||
| $first_element_offset = $html_element_matches[0][1]; | ||
| $content = substr_replace( $block_content, ' class="' . $class_name . '"', $first_element_offset + strlen( $first_element ) - 1, 0 ); | ||
| } | ||
|
|
||
| return $content; | ||
| } | ||
|
|
||
| /** | ||
| * Render the block level presets stylesheet. | ||
| * | ||
| * @access private | ||
| * | ||
| * @param string|null $pre_render The pre-rendered content. Default null. | ||
| * @param array $block The block being rendered. | ||
| * | ||
| * @return null | ||
| */ | ||
| function _gutenberg_add_block_level_preset_styles( $pre_render, $block ) { | ||
| // Return early if the block has not support for descendent block styles. | ||
| $block_type = WP_Block_Type_Registry::get_instance()->get_registered( $block['blockName'] ); | ||
| if ( ! block_has_support( $block_type, array( '__experimentalSettings' ), false ) ) { | ||
| return null; | ||
| } | ||
|
|
||
| // return early if no settings are found on the block attributes. | ||
| $block_settings = _wp_array_get( $block, array( 'attrs', 'settings' ), null ); | ||
| if ( empty( $block_settings ) ) { | ||
| return null; | ||
| } | ||
|
|
||
| $class_name = '.' . _gutenberg_get_presets_class_name( $block ); | ||
|
|
||
| // the root selector for preset variables needs to target every possible block selector | ||
| // in order for the general setting to override any bock specific setting of a parent block or | ||
| // the site root. | ||
| $variables_root_selector = '*,[class*="wp-block"]'; | ||
| $registry = WP_Block_Type_Registry::get_instance(); | ||
| $blocks = $registry->get_all_registered(); | ||
| foreach ( $blocks as $block_type ) { | ||
| if ( | ||
| isset( $block_type->supports['__experimentalSelector'] ) && | ||
| is_string( $block_type->supports['__experimentalSelector'] ) | ||
| ) { | ||
| $variables_root_selector .= ',' . $block_type->supports['__experimentalSelector']; | ||
| } | ||
| } | ||
| $variables_root_selector = WP_Theme_JSON_6_1::scope_selector( $class_name, $variables_root_selector ); | ||
|
|
||
| // Remove any potentially unsafe styles. | ||
| $theme_json_shape = WP_Theme_JSON_Gutenberg::remove_insecure_properties( | ||
| array( | ||
| 'version' => WP_Theme_JSON_Gutenberg::LATEST_SCHEMA, | ||
| 'settings' => $block_settings, | ||
| ) | ||
| ); | ||
| $theme_json_object = new WP_Theme_JSON_Gutenberg( $theme_json_shape ); | ||
|
|
||
| $styles = ''; | ||
|
|
||
| // include preset css variables declaration on the stylesheet. | ||
| $styles .= $theme_json_object->get_stylesheet( | ||
| array( 'variables' ), | ||
| null, | ||
| array( | ||
| 'root_selector' => $variables_root_selector, | ||
| 'scope' => $class_name, | ||
| ) | ||
| ); | ||
|
|
||
| // include preset css classes on the the stylesheet. | ||
| $styles .= $theme_json_object->get_stylesheet( | ||
| array( 'presets' ), | ||
| null, | ||
| array( | ||
| 'root_selector' => $class_name . ',' . $class_name . ' *', | ||
| 'scope' => $class_name, | ||
| ) | ||
| ); | ||
|
|
||
| if ( ! empty( $styles ) ) { | ||
| gutenberg_enqueue_block_support_styles( $styles ); | ||
| } | ||
|
|
||
| return null; | ||
| } | ||
|
|
||
| add_filter( 'render_block', '_gutenberg_add_block_level_presets_class', 10, 2 ); | ||
| add_filter( 'pre_render_block', '_gutenberg_add_block_level_preset_styles', 10, 2 ); |
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