config = Dispatcher::config();
}
/**
* Runs User Experience DNS Prefetc feature.
*
* @since 2.5.1
*
* @return void
*/
public function run() {
if ( ! Util_Environment::is_w3tc_pro( $this->config ) ) {
$this->config->set_extension_active_frontend( 'user-experience-preload-requests', false );
return;
}
// Applies logic to display page cache flush notice if Preload Requests settings are altered and saved.
add_filter( 'w3tc_save_options', array( $this, 'w3tc_save_options' ) );
// Renders the Preload Reqeusts settings metabox on the User Expereince advanced setting page.
add_action( 'w3tc_userexperience_page', array( $this, 'w3tc_userexperience_page' ), 20 );
// This filter is documented in Generic_AdminActions_Default.php under the read_request method.
add_filter( 'w3tc_config_key_descriptor', array( $this, 'w3tc_config_key_descriptor' ), 10, 2 );
// Applies dns-prefetch, preconnect, and preload headers.
add_action( 'wp_head', array( $this, 'w3tc_preload_requests_headers' ) );
add_action( 'admin_head', array( $this, 'w3tc_preload_requests_headers' ) );
}
/**
* Renders the user experience Preload Requests settings page.
*
* @since 2.5.1
*
* @return void
*/
public function w3tc_userexperience_page() {
if ( self::is_enabled() ) {
include __DIR__ . '/UserExperience_Preload_Requests_Page_View.php';
}
}
/**
* Specify config key typing for fields that need it.
*
* @since 2.5.1
*
* @param mixed $descriptor Descriptor.
* @param mixed $key Compound key array.
*
* @return array
*/
public function w3tc_config_key_descriptor( $descriptor, $key ) {
if (
is_array( $key )
&& in_array(
implode( '.', $key ),
array(
'user-experience-preload-requests.dns-prefetch',
'user-experience-preload-requests.preconnect',
'user-experience-preload-requests.preload-css',
'user-experience-preload-requests.preload-js',
'user-experience-preload-requests.preload-fonts',
'user-experience-preload-requests.preload-images',
'user-experience-preload-requests.preload-videos',
'user-experience-preload-requests.preload-audio',
'user-experience-preload-requests.preload-documents',
)
)
) {
$descriptor = array( 'type' => 'array' );
}
return $descriptor;
}
/**
* Performs actions on save.
*
* @since 2.5.1
*
* @param array $data Array of save data.
*
* @return array
*/
public function w3tc_save_options( $data ) {
$new_config = $data['new_config'];
$old_config = $data['old_config'];
$new_includes = $new_config->get_array( array( 'user-experience-preload-requests', 'includes' ) );
$old_includes = $old_config->get_array( array( 'user-experience-preload-requests', 'includes' ) );
if ( $new_includes !== $old_includes && $this->config->get_boolean( 'pgcache.enabled' ) ) {
$state = Dispatcher::config_state();
$state->set( 'common.show_note.flush_posts_needed', true );
$state->save();
}
return $data;
}
/**
* Applies the Preload Requests headers for wp_head and admin_head.
*
* @since 2.5.1
*
* @return void
*/
public function w3tc_preload_requests_headers() {
// Preconnect hints should be printed first so they take priority. If not supported then dns-prefetch will be the fallback.
$preconnect = $this->config->get_array( array( 'user-experience-preload-requests', 'preconnect' ) );
foreach ( $preconnect as $url ) {
echo '';
}
$dns_prefetch = $this->config->get_array( array( 'user-experience-preload-requests', 'dns-prefetch' ) );
foreach ( $dns_prefetch as $url ) {
echo '';
}
$preload_css = $this->config->get_array( array( 'user-experience-preload-requests', 'preload-css' ) );
foreach ( $preload_css as $url ) {
echo '';
}
$preload_js = $this->config->get_array( array( 'user-experience-preload-requests', 'preload-js' ) );
foreach ( $preload_js as $url ) {
echo '';
}
$preload_fonts = $this->config->get_array( array( 'user-experience-preload-requests', 'preload-fonts' ) );
foreach ( $preload_fonts as $url ) {
echo '';
}
$preload_images = $this->config->get_array( array( 'user-experience-preload-requests', 'preload-images' ) );
foreach ( $preload_images as $url ) {
echo '';
}
$preload_videos = $this->config->get_array( array( 'user-experience-preload-requests', 'preload-videos' ) );
foreach ( $preload_videos as $url ) {
echo '';
}
$preload_audio = $this->config->get_array( array( 'user-experience-preload-requests', 'preload-audio' ) );
foreach ( $preload_audio as $url ) {
echo '';
}
$preload_documents = $this->config->get_array( array( 'user-experience-preload-requests', 'preload-documents' ) );
foreach ( $preload_documents as $url ) {
echo '';
}
}
/**
* Gets the enabled status of the extension.
*
* @since 2.5.1
*
* @return bool
*/
public static function is_enabled() {
$config = Dispatcher::config();
$extensions_active = $config->get_array( 'extensions.active' );
return Util_Environment::is_w3tc_pro( $config ) && array_key_exists( 'user-experience-preload-requests', $extensions_active );
}
}
$o = new UserExperience_Preload_Requests_Extension();
$o->run();