'\Twitter\WordPress\Widgets\Buttons\Follow', \Twitter\WordPress\Features::PERISCOPE_ON_AIR => '\Twitter\WordPress\Widgets\Buttons\Periscope\OnAir', \Twitter\WordPress\Features::EMBED_PROFILE => '\Twitter\WordPress\Widgets\Embeds\Timeline\Profile', \Twitter\WordPress\Features::EMBED_LIST => '\Twitter\WordPress\Widgets\Embeds\Timeline\TwitterList', \Twitter\WordPress\Features::EMBED_SEARCH => '\Twitter\WordPress\Widgets\Embeds\Timeline\Search', \Twitter\WordPress\Features::EMBED_COLLECTION => '\Twitter\WordPress\Widgets\Embeds\Timeline\Collection', \Twitter\WordPress\Features::TRACKING_PIXEL => '\Twitter\WordPress\Widgets\Advertising\Tracking', ); } /** * Register widgets * * @since 1.0.0 * * @return void */ public static function widgetsInit() { $features = \Twitter\WordPress\Features::getEnabledFeatures(); $widgets = static::getAvailableWidgets(); foreach ( $widgets as $feature => $widget_class ) { if ( isset( $features[ $feature ] ) ) { register_widget( $widget_class ); } } } /** * Load Twitter widgets JavaScript early in the page build if a dependent widget will be rendered * * @since 2.0.1 * * @return void */ public static function loadTwitterWidgetsJavaScriptWhenWidgetsActive() { $widgets_js_widgets = static::getAvailableWidgets(); // remove widgets not depending on Twitter widgets JS unset( $widgets_js_widgets[ \Twitter\WordPress\Features::TRACKING_PIXEL ] ); if ( empty( $widgets_js_widgets ) ) { return; } $features = \Twitter\WordPress\Features::getEnabledFeatures(); foreach ( $widgets_js_widgets as $feature_name => $widget_class ) { if ( isset( $features[ $feature_name ] ) ) { if ( method_exists( $widget_class, 'getBaseID' ) ) { $base_id = $widget_class::getBaseID(); if ( $base_id && is_active_widget( false, false, $base_id, true ) ) { // enqueue after the script is registered in wp_enqueue_scripts action priority 1 add_action( 'wp_enqueue_scripts', array( '\Twitter\WordPress\JavaScriptLoaders\Widgets', 'enqueue' ) ); // register DNS prefetch before WordPress resource hints run at wp_head priority 2 add_action( 'wp_head', array( '\Twitter\WordPress\JavaScriptLoaders\Widgets', 'dnsPrefetch' ), 1 ); // only enqueue once return; } unset( $base_id ); } } } } /** * Load Twitter advertising JavaScript early in the page build if an ad tracker widget will be rendered * * @since 2.0.1 * * @return void */ public static function loadTwitterAdvertisingJavaScriptWhenWidgetsActive() { $features = \Twitter\WordPress\Features::getEnabledFeatures(); if ( ! isset( $features[ \Twitter\WordPress\Features::TRACKING_PIXEL ] ) ) { return; } if ( is_active_widget( false, false, \Twitter\WordPress\Widgets\Advertising\Tracking::getBaseID(), true ) ) { // enqueue after the script is registered in wp_enqueue_scripts action priority 1 add_action( 'wp_enqueue_scripts', array( '\Twitter\WordPress\JavaScriptLoaders\Tracking', 'enqueue' ) ); // register DNS prefetch before WordPress resource hints run at wp_head priority 2 add_action( 'wp_head', array( '\Twitter\WordPress\JavaScriptLoaders\Tracking', 'dnsPrefetch' ), 1 ); } } /** * Hook into actions and filters specific to a WordPress administrative view * * @since 1.0.0 * * @return void */ public static function adminInit() { // User profile fields add_action( 'admin_init', array( '\Twitter\WordPress\Admin\Profile\User', 'init' ) ); add_action( 'admin_init', array( '\Twitter\WordPress\Admin\Profile\PeriscopeUser', 'init' ) ); $features = \Twitter\WordPress\Features::getEnabledFeatures(); // Twitter settings menu \Twitter\WordPress\Admin\Settings\Loader::init(); if ( isset( $features[ \Twitter\WordPress\Features::CARDS ] ) || isset( $features[ \Twitter\WordPress\Features::TWEET_BUTTON ] ) ) { // Edit post meta box add_action( 'admin_init', array( '\Twitter\WordPress\Admin\Post\MetaBox', 'init' ) ); } } /** * Register actions and filters shown in a non-admin context * * @since 1.0.0 * * @return void */ public static function publicInit() { // enhance web browser view only if ( is_feed() ) { return; } $features = \Twitter\WordPress\Features::getEnabledFeatures(); // load widgets JS if a Twitter widget is active static::loadTwitterWidgetsJavaScriptWhenWidgetsActive(); // load advertising JS if an ad tracking widget is active static::loadTwitterAdvertisingJavaScriptWhenWidgetsActive(); // do not add content filters to HTTP 404 response if ( is_404() ) { return; } if ( ! isset( $features[ \Twitter\WordPress\Features::TWEET_BUTTON ] ) ) { return; } /** * Set the priority to apply to Twitter elements automatically added to the_content * * Allow publishers to adjust the order of Twitter buttons relative to other the_content actors * * @since 1.0.0 * * @param int $priority filter priority */ $twitter_content_priority = apply_filters( 'twitter_content_filter_priority', 15 ); // possibly add Tweet button(s) add_filter( 'the_content', array( '\Twitter\WordPress\Content\Buttons\Tweet', 'contentFilter' ), $twitter_content_priority ); } /** * Register shortcodes handlers and callbacks * * @since 1.0.0 * * @return void */ public static function registerShortcodeHandlers() { $features = \Twitter\WordPress\Features::getEnabledFeatures(); $shortcode_namespace = '\\Twitter\\WordPress\\Shortcodes\\'; // features requiring HTTPS remote requests if ( wp_http_supports( array( 'ssl' => true ) ) ) { foreach ( array( \Twitter\WordPress\Features::EMBED_TWEET => 'Tweet', \Twitter\WordPress\Features::EMBED_TWEET_VIDEO => 'Tweet\\Video', \Twitter\WordPress\Features::EMBED_VINE => 'Vine', \Twitter\WordPress\Features::EMBED_PROFILE => 'Timeline\\Profile', \Twitter\WordPress\Features::EMBED_LIST => 'Timeline\\TwitterList', \Twitter\WordPress\Features::EMBED_COLLECTION => 'Timeline\\Collection', \Twitter\WordPress\Features::EMBED_COLLECTION_GRID => 'Timeline\\CollectionGrid', \Twitter\WordPress\Features::EMBED_MOMENT => 'Moment', ) as $feature => $shortcode_class ) { if ( ! isset( $features[ $feature ] ) ) { continue; } add_action( 'plugins_loaded', array( $shortcode_namespace . 'Embeds\\' . $shortcode_class, 'init' ), 5, 0 ); } } // initialize buttons, search timeline, and ad pixel if not disabled foreach ( array( \Twitter\WordPress\Features::FOLLOW_BUTTON => 'Buttons\\Follow', \Twitter\WordPress\Features::TWEET_BUTTON => 'Buttons\\Share', \Twitter\WordPress\Features::PERISCOPE_ON_AIR => 'Buttons\\Periscope\\OnAir', \Twitter\WordPress\Features::EMBED_SEARCH => 'Embeds\\Timeline\\Search', \Twitter\WordPress\Features::TRACKING_PIXEL => 'Advertising\\Tracking', ) as $feature => $shortcode_class ) { if ( ! isset( $features[ $feature ] ) ) { continue; } add_action( 'plugins_loaded', array( $shortcode_namespace . $shortcode_class, 'init' ), 5, 0 ); } } /** * Attach actions to the wp_head action * * @since 1.0.0 * * @return void */ public static function wpHead() { $features = \Twitter\WordPress\Features::getEnabledFeatures(); // Twitter Cards markup if ( isset( $features[ \Twitter\WordPress\Features::CARDS ] ) ) { add_action( 'wp_head', array( '\Twitter\WordPress\Head\CardsMetaElements', 'outputMetaElements' ), 99, // late priority to override if multiple values provided 0 // expects no arguments ); } // page-level customizations referenced by Twitter JavaScript add_action( 'wp_head', array( '\Twitter\WordPress\Head\WidgetsMetaElements', 'outputMetaElements' ), 11, // priority 0 // expects no arguments ); if ( ! is_singular() && ! is_author() ) { // attribute authorship to site or site section when a post author does not exist add_action( 'wp_head', array( '\Twitter\WordPress\Head\AuthorshipLink', 'relMe' ), 10, // default priority 0 // no parameters ); } } /** * Register JavaScript during the enqueue scripts action * * @since 1.0.0 * * @return void */ public static function registerScripts() { // Twitter widgets \Twitter\WordPress\JavaScriptLoaders\Widgets::register(); // Vine embed \Twitter\WordPress\JavaScriptLoaders\VineEmbed::register(); // Twitter audience tracker and conversion \Twitter\WordPress\JavaScriptLoaders\Tracking::register(); } /** * Compatibility wrappers for popular plugins * * @since 1.0.0 * * @return void */ public static function compatibility() { $features = \Twitter\WordPress\Features::getEnabledFeatures(); if ( isset( $features[ \Twitter\WordPress\Features::CARDS ] ) ) { \Twitter\WordPress\Cards\Compatibility::init(); } } }