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<?php |
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/** |
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* Slideshow Block. |
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* |
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* @since 7.1.0 |
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* |
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* @package Jetpack |
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*/ |
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jetpack_register_block( |
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'jetpack/slideshow', |
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array( |
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'render_callback' => 'jetpack_slideshow_block_load_assets', |
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) |
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); |
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/** |
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* Slideshow block registration/dependency declaration. |
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* |
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* @param array $attr Array containing the slideshow block attributes. |
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* @param string $content String containing the slideshow block content. |
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* |
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* @return string |
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*/ |
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function jetpack_slideshow_block_load_assets( $attr, $content ) { |
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Jetpack_Gutenberg::load_assets_as_required( 'slideshow' ); |
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if ( class_exists( 'Jetpack_AMP_Support' ) && Jetpack_AMP_Support::is_amp_request() ) { |
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return jetpack_slideshow_block_render_amp( $attr ); |
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} |
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return $content; |
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} |
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/** |
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* Render slideshow block for AMP |
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* |
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* @param array $attr Array containing the slideshow block attributes. |
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* |
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* @return string |
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*/ |
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function jetpack_slideshow_block_render_amp( $attr ) { |
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static $wp_block_jetpack_slideshow_id = 0; |
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$wp_block_jetpack_slideshow_id++; |
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$ids = empty( $attr['ids'] ) ? array() : $attr['ids']; |
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$autoplay = empty( $attr['autoplay'] ) ? false : $attr['autoplay']; |
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$extras = array( |
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'wp-amp-block', |
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$autoplay ? 'wp-block-jetpack-slideshow__autoplay' : null, |
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$autoplay ? 'wp-block-jetpack-slideshow__autoplay-playing' : null, |
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); |
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$classes = Jetpack_Gutenberg::block_classes( 'slideshow', $attr, $extras ); |
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return sprintf( |
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'<div class="%1$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>', |
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esc_attr( $classes ), |
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absint( $wp_block_jetpack_slideshow_id ), |
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jetpack_slideshow_block_amp_carousel( $attr, $wp_block_jetpack_slideshow_id ), |
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$autoplay ? jetpack_slideshow_block_autoplay_ui( $wp_block_jetpack_slideshow_id ) : '', |
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jetpack_slideshow_block_bullets( $ids, $wp_block_jetpack_slideshow_id ) |
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); |
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} |
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/** |
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* Generate amp-carousel markup |
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* |
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* @param array $attr Array of block attributes. |
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* @param int $block_ordinal The ordinal number of the block, used in unique ID. |
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* |
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* @return string amp-carousel markup. |
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*/ |
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function jetpack_slideshow_block_amp_carousel( $attr, $block_ordinal ) { |
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$ids = empty( $attr['ids'] ) ? array() : $attr['ids']; |
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$first_image = wp_get_attachment_metadata( $ids[0] ); |
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$delay = empty( $attr['delay'] ) ? 3 : absint( $attr['delay'] ); |
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$autoplay = empty( $attr['autoplay'] ) ? false : $attr['autoplay']; |
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$width = empty( $first_image['width'] ) ? 800 : $first_image['width']; |
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$height = empty( $first_image['height'] ) ? 600 : $first_image['height']; |
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return sprintf( |
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'<amp-carousel width="%1$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>', |
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esc_attr( $width ), |
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esc_attr( $height ), |
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esc_attr__( 'Next Slide', 'jetpack' ), |
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esc_attr__( 'Previous Slide', 'jetpack' ), |
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$autoplay ? 'autoplay delay=' . esc_attr( $delay * 1000 ) : '', |
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absint( $block_ordinal ), |
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implode( '', jetpack_slideshow_block_slides( $ids, $width, $height ) ) |
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); |
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} |
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/** |
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* Generate array of slides markup |
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* |
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* @param array $ids Array of image ids. |
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* @param int $width Width of the container. |
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* @param int $height Height of the container. |
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* |
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* @return array Array of slides markup. |
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*/ |
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function jetpack_slideshow_block_slides( $ids = array(), $width = 400, $height = 300 ) { |
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return array_map( |
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function( $id ) use ( $width, $height ) { |
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$caption = wp_get_attachment_caption( $id ); |
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$figcaption = $caption ? sprintf( |
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'<figcaption class="wp-block-jetpack-slideshow_caption gallery-caption">%s</figcaption>', |
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wp_kses_post( $caption ) |
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) : ''; |
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$image = wp_get_attachment_image( |
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$id, |
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array( $width, $height ), |
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false, |
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array( |
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'class' => 'wp-block-jetpack-slideshow_image', |
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'object-fit' => 'contain', |
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) |
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); |
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return sprintf( |
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'<div class="wp-block-jetpack-slideshow_slide"><figure>%s%s</figure></div>', |
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$image, |
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$figcaption |
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); |
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}, |
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$ids |
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); |
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} |
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/** |
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* Generate array of bullets markup |
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* |
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* @param array $ids Array of image ids. |
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* @param int $block_ordinal The ordinal number of the block, used in unique ID. |
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* |
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* @return array Array of bullets markup. |
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*/ |
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function jetpack_slideshow_block_bullets( $ids = array(), $block_ordinal = 0 ) { |
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$buttons = array_map( |
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function( $index ) { |
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$aria_label = sprintf( |
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/* translators: %d: Slide number. */ |
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__( 'Go to slide %d', 'jetpack' ), |
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absint( $index + 1 ) |
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); |
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return sprintf( |
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'<button option="%d" class="swiper-pagination-bullet" tabindex="0" role="button" aria-label="%s" %s></button>', |
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absint( $index ), |
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esc_attr( $aria_label ), |
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0 === $index ? 'selected' : '' |
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); |
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}, |
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array_keys( $ids ) |
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); |
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return sprintf( |
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'<amp-selector id="wp-block-jetpack-slideshow__amp-pagination__%1$d" class="wp-block-jetpack-slideshow_pagination swiper-pagination swiper-pagination-bullets amp-pagination" on="select:wp-block-jetpack-slideshow__amp-carousel__%1$d.goToSlide(index=event.targetOption)" layout="container">%2$s</amp-selector>', |
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absint( $block_ordinal ), |
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implode( '', $buttons ) |
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); |
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} |
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/** |
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* Generate autoplay play/pause UI. |
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* |
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* @param int $block_ordinal The ordinal number of the block, used in unique ID. |
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* |
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* @return string Autoplay UI markup. |
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*/ |
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function jetpack_slideshow_block_autoplay_ui( $block_ordinal = 0 ) { |
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$block_id = sprintf( |
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'wp-block-jetpack-slideshow__%d', |
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absint( $block_ordinal ) |
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); |
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$amp_carousel_id = sprintf( |
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'wp-block-jetpack-slideshow__amp-carousel__%d', |
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absint( $block_ordinal ) |
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); |
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$autoplay_pause = sprintf( |
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'<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>', |
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esc_attr__( 'Pause Slideshow', 'jetpack' ), |
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esc_attr( $amp_carousel_id ), |
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esc_attr( $block_id ) |
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); |
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$autoplay_play = sprintf( |
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'<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>', |
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esc_attr__( 'Play Slideshow', 'jetpack' ), |
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esc_attr( $amp_carousel_id ), |
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esc_attr( $block_id ) |
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); |
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return $autoplay_pause . $autoplay_play; |
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} |
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