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   1  <?php
   2  /**
   3   * Server-side rendering of the `core/widget-group` block.
   4   *
   5   * @package WordPress
   6   */
   7  
   8  /**
   9   * Renders the 'core/widget-group' block.
  10   *
  11   * @param array    $attributes The block attributes.
  12   * @param string   $content The block content.
  13   * @param WP_Block $block The block.
  14   *
  15   * @return string Rendered block.
  16   */
  17  function render_block_core_widget_group( $attributes, $content, $block ) {
  18      global $wp_registered_sidebars, $_sidebar_being_rendered;
  19  
  20      if ( isset( $wp_registered_sidebars[ $_sidebar_being_rendered ] ) ) {
  21          $before_title = $wp_registered_sidebars[ $_sidebar_being_rendered ]['before_title'];
  22          $after_title  = $wp_registered_sidebars[ $_sidebar_being_rendered ]['after_title'];
  23      } else {
  24          $before_title = '<h2 class="widget-title">';
  25          $after_title  = '</h2>';
  26      }
  27  
  28      $html = '';
  29  
  30      if ( ! empty( $attributes['title'] ) ) {
  31          $html .= $before_title . $attributes['title'] . $after_title;
  32      }
  33  
  34      $html .= '<div class="wp-widget-group__inner-blocks">';
  35      foreach ( $block->inner_blocks as $inner_block ) {
  36          $html .= $inner_block->render();
  37      }
  38      $html .= '</div>';
  39  
  40      return $html;
  41  }
  42  
  43  /**
  44   * Registers the 'core/widget-group' block.
  45   */
  46  function register_block_core_widget_group() {
  47      register_block_type_from_metadata(
  48          __DIR__ . '/widget-group',
  49          array(
  50              'render_callback' => 'render_block_core_widget_group',
  51          )
  52      );
  53  }
  54  
  55  add_action( 'init', 'register_block_core_widget_group' );
  56  
  57  /**
  58   * Make a note of the sidebar being rendered before WordPress starts rendering
  59   * it. This lets us get to the current sidebar in
  60   * render_block_core_widget_group().
  61   *
  62   * @param int|string $index       Index, name, or ID of the dynamic sidebar.
  63   */
  64  function note_sidebar_being_rendered( $index ) {
  65      global $_sidebar_being_rendered;
  66      $_sidebar_being_rendered = $index;
  67  }
  68  add_action( 'dynamic_sidebar_before', 'note_sidebar_being_rendered' );
  69  
  70  /**
  71   * Clear whatever we set in note_sidebar_being_rendered() after WordPress
  72   * finishes rendering a sidebar.
  73   */
  74  function discard_sidebar_being_rendered() {
  75      global $_sidebar_being_rendered;
  76      unset( $_sidebar_being_rendered );
  77  }
  78  add_action( 'dynamic_sidebar_after', 'discard_sidebar_being_rendered' );