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1 <?php 2 /** 3 * Server-side rendering of the `core/file` block. 4 * 5 * @package WordPress 6 */ 7 8 /** 9 * When the `core/file` block is rendering, check if we need to enqueue the `wp-block-file-view` script. 10 * 11 * @since 5.8.0 12 * 13 * @param array $attributes The block attributes. 14 * @param string $content The block content. 15 * 16 * @return string Returns the block content. 17 */ 18 function render_block_core_file( $attributes, $content ) { 19 if ( empty( $attributes['displayPreview'] ) ) { 20 return $content; 21 } 22 23 // If it's interactive, enqueue the script module and add the directives. 24 wp_enqueue_script_module( '@wordpress/block-library/file/view' ); 25 26 $processor = new WP_HTML_Tag_Processor( $content ); 27 if ( $processor->next_tag() ) { 28 $processor->set_attribute( 'data-wp-interactive', 'core/file' ); 29 } 30 31 // If there are no OBJECT elements, something might have already modified the block. 32 if ( ! $processor->next_tag( 'OBJECT' ) ) { 33 return $content; 34 } 35 36 $processor->set_attribute( 'data-wp-bind--hidden', '!state.hasPdfPreview' ); 37 $processor->set_attribute( 'hidden', true ); 38 39 $filename = $processor->get_attribute( 'aria-label' ); 40 $has_filename = is_string( $filename ) && ! empty( $filename ) && 'PDF embed' !== $filename; 41 $label = $has_filename ? sprintf( 42 /* translators: %s: filename. */ 43 __( 'Embed of %s.' ), 44 $filename 45 ) : __( 'PDF embed' ); 46 47 // Update object's aria-label attribute if present in block HTML. 48 // Match an aria-label attribute from an object tag. 49 $processor->set_attribute( 'aria-label', $label ); 50 51 return $processor->get_updated_html(); 52 } 53 54 /** 55 * Registers the `core/file` block on server. 56 * 57 * @since 5.8.0 58 */ 59 function register_block_core_file() { 60 register_block_type_from_metadata( 61 __DIR__ . '/file', 62 array( 63 'render_callback' => 'render_block_core_file', 64 ) 65 ); 66 } 67 add_action( 'init', 'register_block_core_file' );
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