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slideshow.php
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<?php /** * Slideshow Block. * * @since 7.1.0 * * @package automattic/jetpack */ namespace Automattic\Jetpack\Extensions\Slideshow; use Automattic\Jetpack\Blocks; use Jetpack_Gutenberg; if ( ! defined( 'ABSPATH' ) ) { exit( 0 ); } /** * 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( __DIR__, array( 'render_callback' => __NAMESPACE__ . '\load_assets', 'render_email_callback' => __NAMESPACE__ . '\render_email', ) ); } add_action( 'init', __NAMESPACE__ . '\register_block' ); /** * Slideshow block registration/dependency declaration. * * @param array $attr Array containing the slideshow block attributes. * @param string $content String containing the slideshow block content. * * @return string */ function load_assets( $attr, $content ) { Jetpack_Gutenberg::load_assets_as_required( __DIR__ ); if ( Blocks::is_amp_request() ) { return render_amp( $attr ); } // Enqueue Swiper bundle for dynamic loading if ( ! is_admin() && ! Blocks::is_amp_request() ) { enqueue_swiper_library(); } // Fix for lazy loading conflict with slideshow images. if ( ! is_admin() ) { add_filter( 'wp_content_img_tag', function ( $image ) { if ( str_contains( $image, 'loading="lazy"' ) && str_contains( $image, 'wp-block-jetpack-slideshow_image' ) ) { $image = str_replace( 'sizes="auto, ', 'sizes="', $image ); } return $image; } ); } return $content; } /** * Render slideshow block for email. * * @since 15.0 * * @param string $block_content The original block HTML content. * @param array $parsed_block The parsed block data including attributes. * @param object $rendering_context Email rendering context. * * @return string */ function render_email( $block_content, array $parsed_block, $rendering_context ) { // Validate input parameters and required dependencies if ( ! isset( $parsed_block['attrs'] ) || ! is_array( $parsed_block['attrs'] ) || ! class_exists( '\Automattic\WooCommerce\EmailEditor\Integrations\Core\Renderer\Blocks\Gallery' ) ) { return ''; } $attributes = $parsed_block['attrs']; // Process images for email rendering $images = process_slideshow_images_for_email( $attributes ); if ( empty( $images ) ) { return ''; } // Build innerBlocks that WooCommerce's gallery renderer expects // The renderer looks for innerBlocks with blockName 'core/image' and innerHTML $inner_blocks = array(); foreach ( $images as $image ) { // Build image HTML in the format that extract_image_from_html() can parse $img_html = sprintf( '<img src="%s" alt="%s"', esc_url( $image['url'] ), esc_attr( $image['alt'] ) ); if ( ! empty( $image['id'] ) ) { $img_html .= sprintf( ' class="wp-image-%d"', absint( $image['id'] ) ); } $img_html .= ' />'; // Add caption if available (extract_image_from_html looks for figcaption) // Preserve HTML in captions - the gallery renderer will sanitize it if ( ! empty( $image['caption'] ) ) { $img_html .= sprintf( '<figcaption>%s</figcaption>', wp_kses_post( $image['caption'] ) ); } // Create inner block structure that the gallery renderer expects // The renderer only uses innerHTML, not attrs $inner_blocks[] = array( 'blockName' => 'core/image', 'innerHTML' => $img_html, ); } // Build block content HTML for gallery caption extraction (if needed) // The renderer uses $block_content parameter to extract gallery-level captions $block_content_html = '<figure class="wp-block-gallery has-nested-images columns-default is-cropped"><ul class="blocks-gallery-grid"></ul></figure>'; // Create a mock parsed block that WooCommerce's gallery renderer can handle // The renderer uses columns from attrs (defaults to 3, but 2 works better for email) $mock_parsed_block = array( 'innerBlocks' => $inner_blocks, 'attrs' => array( 'columns' => 2, ), ); // Preserve email_attrs if present (used for width calculation) if ( ! empty( $parsed_block['email_attrs'] ) ) { $mock_parsed_block['email_attrs'] = $parsed_block['email_attrs']; } // Use WooCommerce's core gallery renderer $woo_gallery_renderer = new \Automattic\WooCommerce\EmailEditor\Integrations\Core\Renderer\Blocks\Gallery(); return $woo_gallery_renderer->render( $block_content_html, $mock_parsed_block, $rendering_context ); } /** * Render slideshow block for AMP * * @param array $attr Array containing the slideshow block attributes. * * @return string */ function render_amp( $attr ) { if ( empty( $attr['ids'] ) ) { return ''; } static $wp_block_jetpack_slideshow_id = 0; ++$wp_block_jetpack_slideshow_id; $ids = $attr['ids']; $autoplay = empty( $attr['autoplay'] ) ? false : true; $extras = array( 'wp-amp-block', $autoplay ? 'wp-block-jetpack-slideshow__autoplay' : null, $autoplay ? 'wp-block-jetpack-slideshow__autoplay-playing' : null, ); $classes = Blocks::classes( Blocks::get_block_feature( __DIR__ ), $attr, $extras ); return sprintf( '<div class="%1$s" id="wp-block-jetpack-slideshow__%2$d"><div class="wp-block-jetpack-slideshow_container swiper">%3$s%4$s%5$s</div></div>', esc_attr( $classes ), absint( $wp_block_jetpack_slideshow_id ), amp_carousel( $attr, $wp_block_jetpack_slideshow_id ), $autoplay ? autoplay_ui( $wp_block_jetpack_slideshow_id ) : '', render_paginator( $ids, $wp_block_jetpack_slideshow_id ) ); } /** * Generate amp-carousel markup * * @param array $attr Array of block attributes. * @param int $block_ordinal The ordinal number of the block, used in unique ID. * * @return string amp-carousel markup. */ function amp_carousel( $attr, $block_ordinal ) { $ids = empty( $attr['ids'] ) ? array() : $attr['ids']; $first_image = wp_get_attachment_metadata( $ids[0] ); $delay = empty( $attr['delay'] ) ? 3 : absint( $attr['delay'] ); $autoplay = empty( $attr['autoplay'] ) ? false : $attr['autoplay']; $width = empty( $first_image['width'] ) ? 800 : $first_image['width']; $height = empty( $first_image['height'] ) ? 600 : $first_image['height']; return sprintf( '<amp-carousel width="%1$d" height="%2$d" layout="responsive" type="slides" data-next-button-aria-label="%3$s" data-prev-button-aria-label="%4$s" controls loop %5$s id="wp-block-jetpack-slideshow__amp-carousel__%6$s" on="slideChange:wp-block-jetpack-slideshow__amp-pagination__%6$s.toggle(index=event.index, value=true)">%7$s</amp-carousel>', esc_attr( $width ), esc_attr( $height ), esc_attr__( 'Next Slide', 'jetpack' ), esc_attr__( 'Previous Slide', 'jetpack' ), $autoplay ? 'autoplay delay=' . esc_attr( $delay * 1000 ) : '', absint( $block_ordinal ), implode( '', slides( $ids, $width, $height ) ) ); } /** * Generate array of slides markup * * @param array $ids Array of image ids. * @param int $width Width of the container. * @param int $height Height of the container. * * @return array Array of slides markup. */ function slides( $ids = array(), $width = 400, $height = 300 ) { return array_map( function ( $id ) use ( $width, $height ) { $caption = wp_get_attachment_caption( $id ); $figcaption = $caption ? sprintf( '<figcaption class="wp-block-jetpack-slideshow_caption gallery-caption">%s</figcaption>', wp_kses_post( $caption ) ) : ''; $image = wp_get_attachment_image( $id, array( $width, $height ), false, array( 'class' => 'wp-block-jetpack-slideshow_image', 'object-fit' => 'contain', ) ); return sprintf( '<div class="wp-block-jetpack-slideshow_slide"><figure>%s%s</figure></div>', $image, $figcaption ); }, $ids ); } /** * Render blocks paginator section * * @param array $ids Array of image ids. * @param int $block_ordinal The ordinal number of the block, used in unique ID. * * @return array Array of bullets markup. */ function render_paginator( $ids = array(), $block_ordinal = 0 ) { $total = count( $ids ); if ( $total < 6 ) { return bullets( $ids, $block_ordinal ); } return sprintf( '<div class="swiper-pagination-simple">%s / %s</div>', absint( $block_ordinal ), absint( $total ) ); } /** * Generate array of bullets markup * * @param array $ids Array of image ids. * @param int $block_ordinal The ordinal number of the block, used in unique ID. * * @return array Array of bullets markup. */ function bullets( $ids = array(), $block_ordinal = 0 ) { $buttons = array_map( function ( $index ) { $aria_label = sprintf( /* translators: %d: Slide number. */ __( 'Go to slide %d', 'jetpack' ), absint( $index + 1 ) ); return sprintf( '<button option="%d" class="swiper-pagination-bullet" tabindex="0" role="button" aria-label="%s" %s></button>', absint( $index ), esc_attr( $aria_label ), 0 === $index ? 'selected' : '' ); }, array_keys( $ids ) ); return sprintf( '<amp-selector id="wp-block-jetpack-slideshow__amp-pagination__%1$d" class="wp-block-jetpack-slideshow_pagination swiper-pagination swiper-pagination-custom amp-pagination" on="select:wp-block-jetpack-slideshow__amp-carousel__%1$d.goToSlide(index=event.targetOption)" layout="container">%2$s</amp-selector>', absint( $block_ordinal ), implode( '', $buttons ) ); } /** * Generate autoplay play/pause UI. * * @param int $block_ordinal The ordinal number of the block, used in unique ID. * * @return string Autoplay UI markup. */ function autoplay_ui( $block_ordinal = 0 ) { $block_id = sprintf( 'wp-block-jetpack-slideshow__%d', absint( $block_ordinal ) ); $amp_carousel_id = sprintf( 'wp-block-jetpack-slideshow__amp-carousel__%d', absint( $block_ordinal ) ); $autoplay_pause = sprintf( '<a aria-label="%s" class="wp-block-jetpack-slideshow_button-pause" role="button" on="tap:%s.toggleAutoplay(toggleOn=false),%s.toggleClass(class=wp-block-jetpack-slideshow__autoplay-playing,force=false)"></a>', esc_attr__( 'Pause Slideshow', 'jetpack' ), esc_attr( $amp_carousel_id ), esc_attr( $block_id ) ); $autoplay_play = sprintf( '<a aria-label="%s" class="wp-block-jetpack-slideshow_button-play" role="button" on="tap:%s.toggleAutoplay(toggleOn=true),%s.toggleClass(class=wp-block-jetpack-slideshow__autoplay-playing,force=true)"></a>', esc_attr__( 'Play Slideshow', 'jetpack' ), esc_attr( $amp_carousel_id ), esc_attr( $block_id ) ); return $autoplay_pause . $autoplay_play; } /** * Enqueue Swiper library assets for dynamic loading. * * @return void */ function enqueue_swiper_library() { $swiper_js_path = Jetpack_Gutenberg::get_blocks_directory() . 'swiper.js'; $swiper_css_path = Jetpack_Gutenberg::get_blocks_directory() . 'swiper' . ( is_rtl() ? '.rtl' : '' ) . '.css'; if ( Jetpack_Gutenberg::block_has_asset( $swiper_js_path ) ) { wp_enqueue_script( 'jetpack-swiper-library', plugins_url( $swiper_js_path, JETPACK__PLUGIN_FILE ), array(), JETPACK__VERSION, true ); } if ( Jetpack_Gutenberg::block_has_asset( $swiper_css_path ) ) { wp_enqueue_style( 'jetpack-swiper-library', plugins_url( $swiper_css_path, JETPACK__PLUGIN_FILE ), array(), JETPACK__VERSION ); } } /** * Process slideshow images for email rendering. * * @param array $attr Block attributes containing image data. * @return array Processed image data for email rendering. */ function process_slideshow_images_for_email( $attr ) { $images = array(); // Get images from IDs (primary data source) if ( ! empty( $attr['ids'] ) && is_array( $attr['ids'] ) ) { foreach ( $attr['ids'] as $index => $id ) { // Validate ID is a positive integer $id = absint( $id ); if ( ! $id ) { continue; } $image_url = wp_get_attachment_image_url( $id, 'medium' ); // Sanitize alt text from post meta $alt_text = get_post_meta( $id, '_wp_attachment_image_alt', true ); $alt_text = sanitize_text_field( $alt_text ); // Get caption from attachment post (stored in post_excerpt) $attachment_post = get_post( $id ); $caption = ''; // First try to get caption from images array if available (with validation) // Preserve HTML in captions - the gallery renderer will sanitize it if ( ! empty( $attr['images'] ) && is_array( $attr['images'] ) && isset( $attr['images'][ $index ]['caption'] ) ) { $caption = wp_kses_post( $attr['images'][ $index ]['caption'] ); } // If no caption in images array, get it from attachment post if ( empty( $caption ) && $attachment_post && ! empty( $attachment_post->post_excerpt ) ) { $caption = wp_kses_post( $attachment_post->post_excerpt ); } if ( $image_url ) { $images[] = array( 'url' => $image_url, 'alt' => $alt_text, 'caption' => $caption, 'id' => $id, ); } } } elseif ( ! empty( $attr['images'] ) && is_array( $attr['images'] ) ) { // Fall back to images array if IDs aren't available (for edge cases/testing) foreach ( $attr['images'] as $image_data ) { if ( ! empty( $image_data['url'] ) ) { // Sanitize URL - esc_url_raw returns empty string for invalid URLs $url = esc_url_raw( $image_data['url'] ); if ( ! $url ) { continue; } // Sanitize alt text $alt_text = ! empty( $image_data['alt'] ) ? sanitize_text_field( $image_data['alt'] ) : ''; // Preserve HTML in captions - the gallery renderer will sanitize it $caption = ! empty( $image_data['caption'] ) ? wp_kses_post( $image_data['caption'] ) : ''; // Validate ID if present $id = ! empty( $image_data['id'] ) ? absint( $image_data['id'] ) : 0; $images[] = array( 'url' => $url, 'alt' => $alt_text, 'caption' => $caption, 'id' => $id, ); } } } return $images; }