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<?php |
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/** |
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* Tweak the preview when rendered in an iframe |
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*/ |
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class Jetpack_Iframe_Embed { |
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static function init() { |
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if ( ! self::is_embedding_in_iframe() ) { |
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return; |
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} |
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// Disable the admin bar |
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if ( ! defined( 'IFRAME_REQUEST' ) ) { |
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define( 'IFRAME_REQUEST', true ); |
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} |
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// Prevent canonical redirects |
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remove_filter( 'template_redirect', 'redirect_canonical' ); |
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add_action( 'wp_head', array( 'Jetpack_Iframe_Embed', 'noindex' ), 1 ); |
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add_action( 'wp_head', array( 'Jetpack_Iframe_Embed', 'base_target_blank' ), 1 ); |
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add_filter( 'shortcode_atts_video', array( 'Jetpack_Iframe_Embed', 'disable_autoplay' ) ); |
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add_filter( 'shortcode_atts_audio', array( 'Jetpack_Iframe_Embed', 'disable_autoplay' ) ); |
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if ( defined( 'IS_WPCOM' ) && IS_WPCOM ) { |
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wp_enqueue_script( 'jetpack-iframe-embed', WPMU_PLUGIN_URL . '/jetpack-iframe-embed/jetpack-iframe-embed.js', array( 'jquery' ) ); |
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} else { |
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$ver = sprintf( '%s-%s', gmdate( 'oW' ), defined( 'JETPACK__VERSION' ) ? JETPACK__VERSION : '' ); |
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wp_enqueue_script( 'jetpack-iframe-embed', '//s0.wp.com/wp-content/mu-plugins/jetpack-iframe-embed/jetpack-iframe-embed.js', array( 'jquery' ), $ver ); |
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} |
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wp_localize_script( 'jetpack-iframe-embed', '_previewSite', array( 'siteURL' => get_site_url() ) ); |
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} |
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static function is_embedding_in_iframe() { |
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return ( |
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self::has_iframe_get_param() && ( |
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self::has_preview_get_param() || |
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self::has_preview_theme_preview_param() |
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) |
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); |
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} |
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private static function has_iframe_get_param() { |
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return isset( $_GET['iframe'] ) && $_GET['iframe'] === 'true'; |
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} |
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private static function has_preview_get_param() { |
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return isset( $_GET['preview'] ) && $_GET['preview'] === 'true'; |
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} |
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private static function has_preview_theme_preview_param() { |
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return isset( $_GET['theme_preview'] ) && $_GET['theme_preview'] === 'true'; |
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} |
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/** |
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* Disable `autoplay` shortcode attribute in context of an iframe |
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* Added via `shortcode_atts_video` & `shortcode_atts_audio` in `init` |
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* |
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* @param array $atts The output array of shortcode attributes. |
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* |
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* @return array The output array of shortcode attributes. |
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*/ |
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static function disable_autoplay( $atts ) { |
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return array_merge( $atts, array( 'autoplay' => false ) ); |
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} |
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/** |
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* We don't want search engines to index iframe previews |
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* Added via `wp_head` action in `init` |
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*/ |
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static function noindex() { |
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echo '<meta name="robots" content="noindex,nofollow" />'; |
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} |
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/** |
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* Make sure all links and forms open in a new window by default |
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* (unless overridden on client-side by JS) |
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* Added via `wp_head` action in `init` |
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*/ |
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static function base_target_blank() { |
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echo '<base target="_blank" />'; |
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} |
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} |
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Automattic /
jetpack
