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<?php // phpcs:ignore WordPress.Files.FileName.InvalidClassFileName |
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/** |
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* Tweak a preview when rendered in an iframe. |
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* This is used when rendering iFrames in the Calypso app. |
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* |
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* This file is shared between WordPress.com and Jetpack. |
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* The canonical source is Jetpack and no WordPress.com-specific code should exist in this file. |
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* |
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* @package automattic/jetpack |
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*/ |
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|
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/** |
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* Tweak a preview when rendered in an iframe. |
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*/ |
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class Jetpack_Iframe_Embed { |
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/** |
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* Initialize class. |
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*/ |
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public 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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|
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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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|
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// Prevent canonical redirects. |
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remove_filter( 'template_redirect', 'redirect_canonical' ); |
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|
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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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|
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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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|
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$ver = sprintf( '%s-%s', gmdate( 'oW' ), defined( 'JETPACK__VERSION' ) ? JETPACK__VERSION : '' ); |
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if ( defined( 'IS_WPCOM' ) && IS_WPCOM ) { |
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wp_enqueue_script( |
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'jetpack-iframe-embed', |
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'/wp-content/mu-plugins/jetpack-iframe-embed/jetpack-iframe-embed.js', |
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array( 'jquery' ), |
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$ver, |
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false |
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); |
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} else { |
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wp_enqueue_script( |
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'jetpack-iframe-embed', |
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'//s0.wp.com/wp-content/mu-plugins/jetpack-iframe-embed/jetpack-iframe-embed.js', |
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array( 'jquery' ), |
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$ver, |
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false |
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); |
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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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|
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/** |
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* Check that we are in an iFrame. |
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* |
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* @return bool |
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*/ |
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private static function is_embedding_in_iframe() { |
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return ( |
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// phpcs:disable WordPress.Security.NonceVerification.Recommended -- No nonce needed, we're only checking for a specific screen view. |
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isset( $_GET['iframe'] ) && 'true' === $_GET['iframe'] |
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&& ( |
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isset( $_GET['preview'] ) && 'true' === $_GET['preview'] |
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|| isset( $_GET['theme_preview'] ) && 'true' === $_GET['theme_preview'] |
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) |
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// phpcs:enable WordPress.Security.NonceVerification.Recommended |
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); |
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} |
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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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public 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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/** |
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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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public 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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/** |
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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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public 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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|
