
2020年最新版本WordPress本地环境搭建与安装教程
_wp_add_block_level_presets_class ( $block_content, $block )
_wp_add_block_level_presets_class(): 这个函数在WordPress编辑器中根据预设的设置给一个块元素添加一个自定义的CSS类。
function _wp_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; } // Like the layout hook this assumes the hook only applies to blocks with a single wrapper. // Add the class name to the first element, presuming it's the wrapper, if it exists. $tags = new WP_HTML_Tag_Processor( $block_content ); if ( $tags->next_tag() ) { $tags->add_class( _wp_get_presets_class_name( $block ) ); } return $tags->get_updated_html(); }