context['core/tab-index'] ?? 0; $tab_id = $block->context['core/tab-id'] ?? ''; $tab_label = $block->context['core/tab-label'] ?? ''; if ( empty( $tab_id ) ) { $tab_id = 'tab-' . $tab_index; } // Add Interactivity API directives and tab-specific attributes to the button. $tag_processor = new WP_HTML_Tag_Processor( $content ); if ( $tag_processor->next_tag() ) { $tag_processor->set_attribute( 'id', 'tab__' . $tab_id ); $tag_processor->set_attribute( 'aria-controls', $tab_id ); $tag_processor->set_attribute( 'data-wp-on--click', 'actions.handleTabClick' ); $tag_processor->set_attribute( 'data-wp-on--keydown', 'actions.handleTabKeyDown' ); $tag_processor->set_attribute( 'data-wp-bind--aria-selected', 'state.isActiveTab' ); $tag_processor->set_attribute( 'data-wp-bind--tabindex', 'state.tabIndexAttribute' ); $tag_processor->set_attribute( 'data-wp-context', wp_json_encode( array( 'tabIndex' => $tab_index ) ) ); } // Inject the tab label into the button. return preg_replace( '/(]*>).*?(<\/button>)/s', '$1' . wp_kses_post( $tab_label ) . '$2', $tag_processor->get_updated_html(), 1 ); } /** * Registers the `core/tab` block on the server. * * @since 7.0.0 */ function register_block_core_tab() { register_block_type_from_metadata( __DIR__ . '/tab', array( 'render_callback' => 'block_core_tab_render_callback', ) ); } add_action( 'init', 'register_block_core_tab' );