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<?php //phpcs:ignore WordPress.Files.FileName.InvalidClassFileName
/**
* Tiled Gallery block.
* Relies on Photon, but can be used even when the module is not active.
*
* @since 6.9.0
*
* @package automattic/jetpack
*/
namespace Automattic\Jetpack\Extensions;
use Automattic\Jetpack\Blocks;
use Automattic\Jetpack\Current_Plan as Jetpack_Plan;
use Automattic\Jetpack\Status;
use Automattic\Jetpack\Status\Host;
use Jetpack;
use Jetpack_Gutenberg;
/**
* Jetpack Tiled Gallery Block class
*
* @since 7.3
*/
class Tiled_Gallery {
/* Values for building srcsets */
const IMG_SRCSET_WIDTH_MAX = 2000;
const IMG_SRCSET_WIDTH_MIN = 600;
const IMG_SRCSET_WIDTH_STEP = 300;
/**
* Register the block
*/
public static function register() {
if (
( defined( 'IS_WPCOM' ) && IS_WPCOM )
|| Jetpack::is_connection_ready()
|| ( new Status() )->is_offline_mode()
) {
Blocks::jetpack_register_block(
__DIR__,
array(
'render_callback' => array( __CLASS__, 'render' ),
)
);
}
}
/**
* Tiled gallery block registration
*
* @param array $attr Array containing the block attributes.
* @param string $content String containing the block content.
*
* @return string
*/
public static function render( $attr, $content ) {
Jetpack_Gutenberg::load_assets_as_required( __DIR__ );
$is_squareish_layout = self::is_squareish_layout( $attr );
// For backward compatibility (ensuring Tiled Galleries using now deprecated versions of the block are not affected).
// See isVIP() in utils/index.js.
$jetpack_plan = Jetpack_Plan::get();
wp_localize_script( 'jetpack-gallery-settings', 'jetpack_plan', array( 'data' => $jetpack_plan['product_slug'] ) );
if ( preg_match_all( '/<img [^>]+>/', $content, $images ) ) {
/**
* This block processes all of the images that are found and builds $find and $replace.
*
* The original img is added to the $find array and the replacement is made and added
* to the $replace array. This is so that the same find and replace operations can be
* made on the entire $content.
*/
$find = array();
$replace = array();
foreach ( $images[0] as $image_html ) {
if (
preg_match( '/data-width="([0-9]+)"/', $image_html, $img_width )
&& preg_match( '/data-height="([0-9]+)"/', $image_html, $img_height )
&& preg_match( '/src="([^"]+)"/', $image_html, $img_src )
) {
// Drop img src query string so it can be used as a base to add photon params
// for the srcset.
$src_parts = explode( '?', $img_src[1], 2 );
$orig_src = $src_parts[0];
$orig_height = absint( $img_height[1] );
$orig_width = absint( $img_width[1] );
// Because URLs are already "photon", the photon function used short-circuits
// before ssl is added. Detect ssl and add is if necessary.
$is_ssl = ! empty( $src_parts[1] ) && str_contains( $src_parts[1], 'ssl=1' );
if ( ! $orig_width || ! $orig_height || ! $orig_src ) {
continue;
}
$srcset_parts = array();
if ( $is_squareish_layout ) {
$min_width = min( self::IMG_SRCSET_WIDTH_MIN, $orig_width, $orig_height );
$max_width = min( self::IMG_SRCSET_WIDTH_MAX, $orig_width, $orig_height );
for ( $w = $min_width; $w <= $max_width; $w = min( $max_width, $w + self::IMG_SRCSET_WIDTH_STEP ) ) {
$srcset_src = add_query_arg(
array(
'resize' => $w . ',' . $w,
'strip' => 'info',
),
$orig_src
);
if ( $is_ssl ) {
$srcset_src = add_query_arg( 'ssl', '1', $srcset_src );
}
$srcset_parts[] = esc_url( $srcset_src ) . ' ' . $w . 'w';
if ( $w >= $max_width ) {
break;
}
}
} else {
$min_width = min( self::IMG_SRCSET_WIDTH_MIN, $orig_width );
$max_width = min( self::IMG_SRCSET_WIDTH_MAX, $orig_width );
for ( $w = $min_width; $w <= $max_width; $w = min( $max_width, $w + self::IMG_SRCSET_WIDTH_STEP ) ) {
$srcset_src = add_query_arg(
array(
'strip' => 'info',
'w' => $w,
),
$orig_src
);
if ( $is_ssl ) {
$srcset_src = add_query_arg( 'ssl', '1', $srcset_src );
}
$srcset_parts[] = esc_url( $srcset_src ) . ' ' . $w . 'w';
if ( $w >= $max_width ) {
break;
}
}
}
if ( ! empty( $srcset_parts ) ) {
$srcset = 'srcset="' . esc_attr( implode( ',', $srcset_parts ) ) . '"';
$find[] = $image_html;
$replace[] = str_replace( '<img', '<img ' . $srcset, $image_html );
}
}
}
if ( ! empty( $find ) ) {
$content = str_replace( $find, $replace, $content );
}
}
// Apply non-interactive markup last to clean up interactivity attributes.
$content = self::non_interactive_markup( $attr, $content );
/**
* Filter the output of the Tiled Galleries content.
*
* @module tiled-gallery
*
* @since 6.9.0
*
* @param string $content Tiled Gallery block content.
*/
return apply_filters( 'jetpack_tiled_galleries_block_content', $content );
}
/**
* Removes tabindex and role markup for images that should not be interactive.
*
* @param array $attr Attributes key/value array.
* @param string $content String containing the block content.
*/
private static function non_interactive_markup( $attr, $content ) {
$link_to = $attr['linkTo'] ?? 'none';
$host = new Host();
$is_module_active = $host->is_wpcom_simple()
? get_option( 'carousel_enable_it' )
: Jetpack::is_module_active( 'carousel' );
if ( $link_to === 'none' && ! $is_module_active ) {
// Remove tabIndex and role="button" by replacing the content
$content = preg_replace(
'/\s*(role="button"|tabindex="0")/',
'',
$content
);
}
return $content;
}
/**
* Determines whether a Tiled Gallery block uses square or circle images (1:1 ratio)
*
* Layouts are block styles and will be available as `is-style-[LAYOUT]` in the className
* attribute. The default (rectangular) will be omitted.
*
* @param array $attr Attributes key/value array.
* @return boolean True if layout is squareish, otherwise false.
*/
private static function is_squareish_layout( $attr ) {
return isset( $attr['className'] )
&& (
'is-style-square' === $attr['className']
|| 'is-style-circle' === $attr['className']
);
}
}
add_action( 'init', array( Tiled_Gallery::class, 'register' ) );