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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; const FEATURE_NAME = 'slideshow'; 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__ . '\load_assets' ) ); } 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( FEATURE_NAME ); if ( Blocks::is_amp_request() ) { return render_amp( $attr ); } return $content; } /** * 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( FEATURE_NAME, $attr, $extras ); return sprintf( '<div class="%1$s" id="wp-block-jetpack-slideshow__%2$d"><div class="wp-block-jetpack-slideshow_container swiper-container">%3$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; }
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