206 lines
6.1 KiB
PHP
206 lines
6.1 KiB
PHP
<?php
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/**
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* File: UserExperience_Preload_Requests_Extension.php
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*
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* Controls the Preload Requests feature.
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*
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* @since 2.5.1
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*
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* @package W3TC
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*/
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namespace W3TC;
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/**
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* UserExperience Preload Requests Extension.
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*
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* @since 2.5.1
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*/
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class UserExperience_Preload_Requests_Extension {
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/**
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* Config.
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*
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* @var object
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*/
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private $config;
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/**
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* User Experience DNS Prefetc constructor.
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*
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* @since 2.5.1
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*/
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public function __construct() {
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$this->config = Dispatcher::config();
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}
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/**
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* Runs User Experience DNS Prefetc feature.
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*
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* @since 2.5.1
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*
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* @return void
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*/
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public function run() {
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if ( ! Util_Environment::is_w3tc_pro( $this->config ) ) {
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$this->config->set_extension_active_frontend( 'user-experience-preload-requests', false );
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return;
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}
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// Applies logic to display page cache flush notice if Preload Requests settings are altered and saved.
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add_filter( 'w3tc_save_options', array( $this, 'w3tc_save_options' ) );
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// Renders the Preload Reqeusts settings metabox on the User Expereince advanced setting page.
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add_action( 'w3tc_userexperience_page', array( $this, 'w3tc_userexperience_page' ), 20 );
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// This filter is documented in Generic_AdminActions_Default.php under the read_request method.
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add_filter( 'w3tc_config_key_descriptor', array( $this, 'w3tc_config_key_descriptor' ), 10, 2 );
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// Applies dns-prefetch, preconnect, and preload headers.
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add_action( 'wp_head', array( $this, 'w3tc_preload_requests_headers' ) );
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add_action( 'admin_head', array( $this, 'w3tc_preload_requests_headers' ) );
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}
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/**
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* Renders the user experience Preload Requests settings page.
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*
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* @since 2.5.1
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*
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* @return void
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*/
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public function w3tc_userexperience_page() {
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if ( self::is_enabled() ) {
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include __DIR__ . '/UserExperience_Preload_Requests_Page_View.php';
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}
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}
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/**
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* Specify config key typing for fields that need it.
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*
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* @since 2.5.1
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*
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* @param mixed $descriptor Descriptor.
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* @param mixed $key Compound key array.
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*
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* @return array
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*/
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public function w3tc_config_key_descriptor( $descriptor, $key ) {
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if (
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is_array( $key )
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&& in_array(
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implode( '.', $key ),
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array(
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'user-experience-preload-requests.dns-prefetch',
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'user-experience-preload-requests.preconnect',
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'user-experience-preload-requests.preload-css',
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'user-experience-preload-requests.preload-js',
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'user-experience-preload-requests.preload-fonts',
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'user-experience-preload-requests.preload-images',
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'user-experience-preload-requests.preload-videos',
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'user-experience-preload-requests.preload-audio',
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'user-experience-preload-requests.preload-documents',
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)
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)
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) {
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$descriptor = array( 'type' => 'array' );
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}
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return $descriptor;
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}
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/**
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* Performs actions on save.
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*
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* @since 2.5.1
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*
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* @param array $data Array of save data.
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*
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* @return array
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*/
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public function w3tc_save_options( $data ) {
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$new_config = $data['new_config'];
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$old_config = $data['old_config'];
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$new_includes = $new_config->get_array( array( 'user-experience-preload-requests', 'includes' ) );
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$old_includes = $old_config->get_array( array( 'user-experience-preload-requests', 'includes' ) );
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if ( $new_includes !== $old_includes && $this->config->get_boolean( 'pgcache.enabled' ) ) {
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$state = Dispatcher::config_state();
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$state->set( 'common.show_note.flush_posts_needed', true );
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$state->save();
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}
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return $data;
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}
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/**
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* Applies the Preload Requests headers for wp_head and admin_head.
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*
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* @since 2.5.1
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*
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* @return void
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*/
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public function w3tc_preload_requests_headers() {
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// Preconnect hints should be printed first so they take priority. If not supported then dns-prefetch will be the fallback.
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$preconnect = $this->config->get_array( array( 'user-experience-preload-requests', 'preconnect' ) );
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foreach ( $preconnect as $url ) {
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echo '<link rel="preconnect" href="' . esc_url( $url ) . '" crossorigin>';
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}
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$dns_prefetch = $this->config->get_array( array( 'user-experience-preload-requests', 'dns-prefetch' ) );
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foreach ( $dns_prefetch as $url ) {
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echo '<link rel="dns-prefetch" href="' . esc_url( $url ) . '">';
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}
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$preload_css = $this->config->get_array( array( 'user-experience-preload-requests', 'preload-css' ) );
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foreach ( $preload_css as $url ) {
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echo '<link rel="preload" href="' . esc_url( $url ) . '" as="style">';
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}
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$preload_js = $this->config->get_array( array( 'user-experience-preload-requests', 'preload-js' ) );
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foreach ( $preload_js as $url ) {
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echo '<link rel="preload" href="' . esc_url( $url ) . '" as="script">';
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}
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$preload_fonts = $this->config->get_array( array( 'user-experience-preload-requests', 'preload-fonts' ) );
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foreach ( $preload_fonts as $url ) {
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echo '<link rel="preload" href="' . esc_url( $url ) . '" as="font" type="font/woff2">';
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}
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$preload_images = $this->config->get_array( array( 'user-experience-preload-requests', 'preload-images' ) );
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foreach ( $preload_images as $url ) {
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echo '<link rel="preload" href="' . esc_url( $url ) . '" as="image">';
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}
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$preload_videos = $this->config->get_array( array( 'user-experience-preload-requests', 'preload-videos' ) );
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foreach ( $preload_videos as $url ) {
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echo '<link rel="preload" href="' . esc_url( $url ) . '" as="video">';
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}
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$preload_audio = $this->config->get_array( array( 'user-experience-preload-requests', 'preload-audio' ) );
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foreach ( $preload_audio as $url ) {
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echo '<link rel="preload" href="' . esc_url( $url ) . '" as="audio">';
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}
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$preload_documents = $this->config->get_array( array( 'user-experience-preload-requests', 'preload-documents' ) );
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foreach ( $preload_documents as $url ) {
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echo '<link rel="preload" href="' . esc_url( $url ) . '" as="document">';
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}
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}
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/**
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* Gets the enabled status of the extension.
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*
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* @since 2.5.1
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*
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* @return bool
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*/
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public static function is_enabled() {
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$config = Dispatcher::config();
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$extensions_active = $config->get_array( 'extensions.active' );
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return Util_Environment::is_w3tc_pro( $config ) && array_key_exists( 'user-experience-preload-requests', $extensions_active );
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}
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}
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$o = new UserExperience_Preload_Requests_Extension();
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$o->run();
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