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   1  <?php
   2  /**
   3   * Server-side rendering of the `core/comment-reply-link` block.
   4   *
   5   * @package WordPress
   6   */
   7  
   8  /**
   9   * Renders the `core/comment-reply-link` block on the server.
  10   *
  11   * @since 6.0.0
  12   *
  13   * @param array    $attributes Block attributes.
  14   * @param string   $content    Block default content.
  15   * @param WP_Block $block      Block instance.
  16   * @return string Return the post comment's reply link.
  17   */
  18  function render_block_core_comment_reply_link( $attributes, $content, $block ) {
  19      if ( ! isset( $block->context['commentId'] ) ) {
  20          return '';
  21      }
  22  
  23      $thread_comments = get_option( 'thread_comments' );
  24      if ( ! $thread_comments ) {
  25          return '';
  26      }
  27  
  28      $comment = get_comment( $block->context['commentId'] );
  29      if ( empty( $comment ) ) {
  30          return '';
  31      }
  32  
  33      $depth     = 1;
  34      $max_depth = get_option( 'thread_comments_depth' );
  35      $parent_id = $comment->comment_parent;
  36  
  37      // Compute comment's depth iterating over its ancestors.
  38      while ( ! empty( $parent_id ) ) {
  39          ++$depth;
  40          $parent_id = get_comment( $parent_id )->comment_parent;
  41      }
  42  
  43      $comment_reply_link = get_comment_reply_link(
  44          array(
  45              'depth'     => $depth,
  46              'max_depth' => $max_depth,
  47          ),
  48          $comment
  49      );
  50  
  51      // Render nothing if the generated reply link is empty.
  52      if ( empty( $comment_reply_link ) ) {
  53          return;
  54      }
  55  
  56      $classes = array();
  57      if ( isset( $attributes['textAlign'] ) ) {
  58          $classes[] = 'has-text-align-' . $attributes['textAlign'];
  59      }
  60      if ( isset( $attributes['style']['elements']['link']['color']['text'] ) ) {
  61          $classes[] = 'has-link-color';
  62      }
  63  
  64      $wrapper_attributes = get_block_wrapper_attributes( array( 'class' => implode( ' ', $classes ) ) );
  65  
  66      return sprintf(
  67          '<div %1$s>%2$s</div>',
  68          $wrapper_attributes,
  69          $comment_reply_link
  70      );
  71  }
  72  
  73  /**
  74   * Registers the `core/comment-reply-link` block on the server.
  75   *
  76   * @since 6.0.0
  77   */
  78  function register_block_core_comment_reply_link() {
  79      register_block_type_from_metadata(
  80          __DIR__ . '/comment-reply-link',
  81          array(
  82              'render_callback' => 'render_block_core_comment_reply_link',
  83          )
  84      );
  85  }
  86  
  87  add_action( 'init', 'register_block_core_comment_reply_link' );