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<?php
/**
* Server-side rendering of the `core/file` block.
*
* @package WordPress
*/
/**
* When the `core/file` block is rendering, check if we need to enqueue the `wp-block-file-view` script.
*
* @since 5.8.0
*
* @param array $attributes The block attributes.
* @param string $content The block content.
* @param WP_Block $block The parsed block.
*
* @return string Returns the block content.
*/
function render_block_core_file( $attributes, $content ) {
// If it's interactive, enqueue the script module and add the directives.
if ( ! empty( $attributes['displayPreview'] ) ) {
wp_enqueue_script_module( '@wordpress/block-library/file/view' );
$processor = new WP_HTML_Tag_Processor( $content );
$processor->next_tag();
$processor->set_attribute( 'data-wp-interactive', 'core/file' );
$processor->next_tag( 'object' );
$processor->set_attribute( 'data-wp-bind--hidden', '!state.hasPdfPreview' );
$processor->set_attribute( 'hidden', true );
$filename = $processor->get_attribute( 'aria-label' );
$has_filename = ! empty( $filename ) && 'PDF embed' !== $filename;
$label = $has_filename ? sprintf(
/* translators: %s: filename. */
__( 'Embed of %s.' ),
$filename
) : __( 'PDF embed' );
// Update object's aria-label attribute if present in block HTML.
// Match an aria-label attribute from an object tag.
$processor->set_attribute( 'aria-label', $label );
return $processor->get_updated_html();
}
return $content;
}
/**
* Registers the `core/file` block on server.
*
* @since 5.8.0
*/
function register_block_core_file() {
register_block_type_from_metadata(
__DIR__ . '/file',
array(
'render_callback' => 'render_block_core_file',
)
);
}
add_action( 'init', 'register_block_core_file' );