diff options
Diffstat (limited to 'plugins/jetpack/_inc/lib/class.jetpack-iframe-embed.php')
-rw-r--r-- | plugins/jetpack/_inc/lib/class.jetpack-iframe-embed.php | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/plugins/jetpack/_inc/lib/class.jetpack-iframe-embed.php b/plugins/jetpack/_inc/lib/class.jetpack-iframe-embed.php new file mode 100644 index 00000000..4445cb65 --- /dev/null +++ b/plugins/jetpack/_inc/lib/class.jetpack-iframe-embed.php @@ -0,0 +1,84 @@ +<?php +/** + * Tweak the preview when rendered in an iframe + */ + +class Jetpack_Iframe_Embed { + static function init() { + if ( ! self::is_embedding_in_iframe() ) { + return; + } + + // Disable the admin bar + if ( ! defined( 'IFRAME_REQUEST' ) ) { + define( 'IFRAME_REQUEST', true ); + } + + // Prevent canonical redirects + remove_filter( 'template_redirect', 'redirect_canonical' ); + + add_action( 'wp_head', array( 'Jetpack_Iframe_Embed', 'noindex' ), 1 ); + add_action( 'wp_head', array( 'Jetpack_Iframe_Embed', 'base_target_blank' ), 1 ); + + add_filter( 'shortcode_atts_video', array( 'Jetpack_Iframe_Embed', 'disable_autoplay' ) ); + add_filter( 'shortcode_atts_audio', array( 'Jetpack_Iframe_Embed', 'disable_autoplay' ) ); + + if ( defined( 'IS_WPCOM' ) && IS_WPCOM ) { + wp_enqueue_script( 'jetpack-iframe-embed', WPMU_PLUGIN_URL . '/jetpack-iframe-embed/jetpack-iframe-embed.js', array( 'jquery' ) ); + } else { + $ver = sprintf( '%s-%s', gmdate( 'oW' ), defined( 'JETPACK__VERSION' ) ? JETPACK__VERSION : '' ); + wp_enqueue_script( 'jetpack-iframe-embed', '//s0.wp.com/wp-content/mu-plugins/jetpack-iframe-embed/jetpack-iframe-embed.js', array( 'jquery' ), $ver ); + } + wp_localize_script( 'jetpack-iframe-embed', '_previewSite', array( 'siteURL' => get_site_url() ) ); + } + + static function is_embedding_in_iframe() { + return ( + self::has_iframe_get_param() && ( + self::has_preview_get_param() || + self::has_preview_theme_preview_param() + ) + ); + } + + private static function has_iframe_get_param() { + return isset( $_GET['iframe'] ) && $_GET['iframe'] === 'true'; + } + + private static function has_preview_get_param() { + return isset( $_GET['preview'] ) && $_GET['preview'] === 'true'; + } + + private static function has_preview_theme_preview_param() { + return isset( $_GET['theme_preview'] ) && $_GET['theme_preview'] === 'true'; + } + + /** + * Disable `autoplay` shortcode attribute in context of an iframe + * Added via `shortcode_atts_video` & `shortcode_atts_audio` in `init` + * + * @param array $atts The output array of shortcode attributes. + * + * @return array The output array of shortcode attributes. + */ + static function disable_autoplay( $atts ) { + return array_merge( $atts, array( 'autoplay' => false ) ); + } + + /** + * We don't want search engines to index iframe previews + * Added via `wp_head` action in `init` + */ + static function noindex() { + echo '<meta name="robots" content="noindex,nofollow" />'; + } + + /** + * Make sure all links and forms open in a new window by default + * (unless overridden on client-side by JS) + * Added via `wp_head` action in `init` + */ + static function base_target_blank() { + echo '<base target="_blank" />'; + } +} |