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<?php /** * Eventbrite Block. * * @since 8.2.0 * * @package automattic/jetpack */ namespace Automattic\Jetpack\Extensions\Eventbrite; use Automattic\Jetpack\Blocks; use Jetpack_Gutenberg; const FEATURE_NAME = 'eventbrite'; const BLOCK_NAME = 'jetpack/' . FEATURE_NAME; /** * Registers the block for use in Gutenberg * This is done via an action so that we can disable * registration if we need to. */ function register_block() { Blocks::jetpack_register_block( BLOCK_NAME, array( 'render_callback' => __NAMESPACE__ . '\render_block' ) ); } add_action( 'init', __NAMESPACE__ . '\register_block' ); /** * Get current URL. * * @return string Current URL. */ function get_current_url() { if ( isset( $_SERVER['HTTP_HOST'] ) ) { $host = wp_unslash( $_SERVER['HTTP_HOST'] ); // phpcs:ignore WordPress.Security.ValidatedSanitizedInput.InputNotSanitized } else { $host = wp_parse_url( home_url(), PHP_URL_HOST ); } if ( isset( $_SERVER['REQUEST_URI'] ) ) { $path = wp_unslash( $_SERVER['REQUEST_URI'] ); // phpcs:ignore WordPress.Security.ValidatedSanitizedInput.InputNotSanitized } else { $path = '/'; } return esc_url_raw( ( is_ssl() ? 'https' : 'http' ) . '://' . $host . $path ); } /** * Eventbrite block registration/dependency delclaration. * * @param array $attr Eventbrite block attributes. * @param string $content Rendered embed element (without scripts) from the block editor. * * @return string Rendered block. */ function render_block( $attr, $content ) { if ( is_admin() || empty( $attr['eventId'] ) || empty( $attr['url'] ) ) { return ''; } $attr['url'] = Jetpack_Gutenberg::validate_block_embed_url( $attr['url'], array( '#^https?:\/\/(?:[0-9a-z]+\.)?eventbrite\.(?:com|co\.uk|com\.ar|com\.au|be|com\.br|ca|cl|co|dk|de|es|fi|fr|hk|ie|it|com\.mx|nl|co\.nz|at|com\.pe|pt|ch|sg|se)\/e\/[^\/]*?(?:\d+)\/?(?:\?[^\/]*)?$#' ), true ); $widget_id = wp_unique_id( 'eventbrite-widget-' ); // Show the embedded version. if ( empty( $attr['useModal'] ) && ( empty( $attr['style'] ) || 'modal' !== $attr['style'] ) ) { return render_embed_block( $widget_id, Blocks::is_amp_request(), $attr ); } else { return render_modal_block( $widget_id, Blocks::is_amp_request(), $attr, $content ); } } /** * Render block with embed style. * * @param string $widget_id Widget ID to use. * @param bool $is_amp Whether AMP page. * @param array $attr Eventbrite block attributes. * @return string Rendered block. */ function render_embed_block( $widget_id, $is_amp, $attr ) { // $content contains a fallback link to the event that's saved in the post_content. // Append a div that will hold the iframe embed created by the Eventbrite widget.js. $classes = Blocks::classes( FEATURE_NAME, $attr ); $classes .= ' wp-block-jetpack-eventbrite--embed'; $direct_link = sprintf( '<a href="%s" rel="noopener noreferrer" target="_blank" class="eventbrite__direct-link" %s>%s</a>', esc_url( $attr['url'] ), $is_amp ? 'placeholder fallback' : '', esc_html__( 'Register on Eventbrite', 'jetpack' ) ); if ( $is_amp ) { $embed = sprintf( '<amp-iframe src="%s" layout="responsive" resizable width="1" height="1" sandbox="allow-scripts allow-same-origin allow-forms"><button overflow>%s</button>%s</amp-iframe>', esc_url( add_query_arg( array( 'eid' => $attr['eventId'], 'parent' => rawurlencode( get_current_url() ), ), 'https://www.eventbrite.com/checkout-external' ) ), esc_html__( 'Expand', 'jetpack' ), $direct_link ); } else { $embed = $direct_link; wp_enqueue_script( 'eventbrite-widget', 'https://www.eventbrite.com/static/widgets/eb_widgets.js', array(), JETPACK__VERSION, true ); // Add CSS to hide direct link. Jetpack_Gutenberg::load_assets_as_required( FEATURE_NAME ); wp_add_inline_script( 'eventbrite-widget', "window.EBWidgets.createWidget( { widgetType: 'checkout', eventId: " . absint( $attr['eventId'] ) . ", iframeContainerId: '" . esc_js( $widget_id ) . "', } );" ); } return sprintf( '<div id="%1$s" class="%2$s">%3$s</div>', esc_attr( $widget_id ), esc_attr( $classes ), $embed ); } /** * Render block with modal style. * * @param string $widget_id Widget ID to use. * @param bool $is_amp Whether AMP page. * @param array $attr Eventbrite block attributes. * @param string $content Rendered embed element (without scripts) from the block editor. * @return string Rendered block. */ function render_modal_block( $widget_id, $is_amp, $attr, $content ) { if ( $is_amp ) { $lightbox_id = "{$widget_id}-lightbox"; // Add CSS to for lightbox. Jetpack_Gutenberg::load_assets_as_required( FEATURE_NAME ); $content = preg_replace( '/\shref="#" target="_blank/', sprintf( ' on="%s" ', esc_attr( "tap:{$lightbox_id}.open" ) ), $content ); $iframe_src = add_query_arg( array( // Note that modal=1 is intentionally omitted here since we need to put the close button inside the amp-lightbox. 'eid' => $attr['eventId'], 'parent' => rawurlencode( get_current_url() ), ), 'https://www.eventbrite.com/checkout-external' ); $lightbox = sprintf( '<amp-lightbox id="%1$s" on="%2$s" class="eventbrite__lightbox" layout="nodisplay">%3$s</amp-lightbox>', esc_attr( $lightbox_id ), esc_attr( "tap:{$lightbox_id}.close" ), sprintf( ' <div class="eventbrite__lighbox-inside"> <div class="eventbrite__lighbox-iframe-wrapper"> <amp-iframe class="eventbrite__lighbox-iframe" src="%s" layout="fill" sandbox="allow-scripts allow-same-origin allow-forms"> <span placeholder=""></span> </amp-iframe> <span class="eventbrite__lighbox-close" on="%s" role="button" tabindex="0" aria-label="%s"> <svg viewBox="0 0 24 24"> <path d="M13.4 12l3.5-3.5-1.4-1.4-3.5 3.5-3.5-3.5-1.4 1.4 3.5 3.5-3.5 3.5 1.4 1.4 3.5-3.5 3.5 3.5 1.4-1.4z"></path> </svg> </span> </div> </div> ', esc_url( $iframe_src ), esc_attr( "tap:{$lightbox_id}.close" ), esc_attr__( 'Close', 'jetpack' ) ) ); $content = preg_replace( ':(?=</div>\s*$):', $lightbox, $content ); return $content; } wp_enqueue_script( 'eventbrite-widget', 'https://www.eventbrite.com/static/widgets/eb_widgets.js', array(), JETPACK__VERSION, true ); // Show the modal version. wp_add_inline_script( 'eventbrite-widget', "window.EBWidgets.createWidget( { widgetType: 'checkout', eventId: " . absint( $attr['eventId'] ) . ", modal: true, modalTriggerElementId: '" . esc_js( $widget_id ) . "', } );" ); // Modal button is saved as an `<a>` element with `role="button"` because `<button>` is not allowed // by WordPress.com wp_kses. This javascript adds the necessary event handling for button-like behavior. // @link https://www.w3.org/TR/wai-aria-practices/examples/button/button.html. wp_add_inline_script( 'eventbrite-widget', "( function() { var widget = document.getElementById( '" . esc_js( $widget_id ) . "' ); if ( widget ) { widget.addEventListener( 'click', function( event ) { event.preventDefault(); } ); widget.addEventListener( 'keydown', function( event ) { // Enter and space keys. if ( event.keyCode === 13 || event.keyCode === 32 ) { event.preventDefault(); event.target && event.target.click(); } } ); } } )();" ); // Replace the placeholder id saved in the post_content with a unique id used by widget.js. $content = str_replace( 'eventbrite-widget-id', esc_attr( $widget_id ), $content ); // Fallback for block version deprecated/v2. $content = preg_replace( '/eventbrite-widget-\d+/', esc_attr( $widget_id ), $content ); // Inject URL to event in case the JS for the lightbox fails to load. $content = preg_replace( '/\shref="#"/', sprintf( ' href="%s" rel="noopener noreferrer" target="_blank"', esc_url( $attr['url'] ) ), $content ); return $content; }
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