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/wp-includes/blocks/ -> file.php (source)

   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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