after the page loads. That catches links * from every source (theme, page builder, blocks, widgets, custom HTML) — a * server-side the_content filter would miss everything a builder renders outside * the_content — and it adds ZERO per-request PHP work, so it is cache-friendly * and never touches the request hot path. * * Opt-in per site: this module ships default-OFF (see the * bw_dev_module_default_enabled filter in BW_Dev_Plugin::boot()). Enable it * under Settings → BW Dev → Modules on the sites that want it. * * @package BW_Dev */ defined( 'ABSPATH' ) || exit; class BW_Dev_Module_External_Links implements BW_Dev_Module_Interface { public function slug(): string { return 'external_links'; } public function label(): string { return __( 'External Links', 'bw-dev' ); } public function group(): string { return 'frontend'; } public function default_settings(): array { return array( 'nofollow' => false, 'internal_domains' => '', ); } public function sanitize( array $data ): array { return array( 'nofollow' => ! empty( $data['nofollow'] ), 'internal_domains' => isset( $data['internal_domains'] ) ? sanitize_textarea_field( wp_unslash( (string) $data['internal_domains'] ) ) : '', ); } public function register(): void { // Front-end only (wp_enqueue_scripts never fires in admin/feeds). add_action( 'wp_enqueue_scripts', array( $this, 'enqueue_assets' ) ); } public function uninstall(): void { // No-op: state lives under bw_dev_settings, dropped by the core uninstall. } public function enqueue_assets(): void { $settings = wp_parse_args( (array) bw_dev()->settings()->get( $this->slug(), null, array() ), $this->default_settings() ); wp_enqueue_script( 'bw-dev-external-links', BW_DEV_URL . 'assets/js/external-links.js', array(), BW_DEV_VERSION, true ); wp_localize_script( 'bw-dev-external-links', 'bwDevExternalLinks', array( 'internalHosts' => $this->internal_hosts( (string) $settings['internal_domains'] ), 'nofollow' => ! empty( $settings['nofollow'] ), ) ); } /** * Parse the "additional internal domains" textarea into a list of bare * lowercase hostnames (scheme, path, port and a leading www. stripped). These * are treated as same-site so their links stay in the current tab. * * @return array */ private function internal_hosts( string $raw ): array { $hosts = array(); foreach ( preg_split( '/[\s,]+/', $raw ) as $entry ) { $entry = strtolower( trim( (string) $entry ) ); if ( '' === $entry ) { continue; } $entry = preg_replace( '~^[a-z]+://~', '', $entry ); // strip scheme $entry = explode( '/', $entry )[0]; // strip path $entry = explode( ':', $entry )[0]; // strip port $entry = preg_replace( '~^www\.~', '', (string) $entry ); if ( '' !== $entry ) { $hosts[] = $entry; } } return array_values( array_unique( $hosts ) ); } public function render_tab(): void { $prefix = BW_Dev_Settings::OPTION . '[' . $this->slug() . ']'; $settings = wp_parse_args( (array) bw_dev()->settings()->get( $this->slug(), null, array() ), $this->default_settings() ); ?>

	<?php echo esc_textarea( (string) $settings['internal_domains'] ); ?>
	/>