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   1  <?php
   2  /**
   3   * The block-based widgets editor, for use in widgets.php.
   4   *
   5   * @package WordPress
   6   * @subpackage Administration
   7   */
   8  
   9  // Don't load directly.
  10  if ( ! defined( 'ABSPATH' ) ) {
  11      die( '-1' );
  12  }
  13  
  14  // Flag that we're loading the block editor.
  15  $current_screen = get_current_screen();
  16  $current_screen->is_block_editor( true );
  17  
  18  $block_editor_context = new WP_Block_Editor_Context( array( 'name' => 'core/edit-widgets' ) );
  19  
  20  $preload_paths = array(
  21      array( rest_get_route_for_post_type_items( 'attachment' ), 'OPTIONS' ),
  22      '/wp/v2/widget-types?context=edit&per_page=-1',
  23      '/wp/v2/sidebars?context=edit&per_page=-1',
  24      '/wp/v2/widgets?context=edit&per_page=-1&_embed=about',
  25  );
  26  block_editor_rest_api_preload( $preload_paths, $block_editor_context );
  27  
  28  $editor_settings = get_block_editor_settings(
  29      array_merge( get_legacy_widget_block_editor_settings(), array( 'styles' => get_block_editor_theme_styles() ) ),
  30      $block_editor_context
  31  );
  32  
  33  // The widgets editor does not support the Block Directory, so don't load any of
  34  // its assets. This also prevents 'wp-editor' from being enqueued which we
  35  // cannot load in the widgets screen because many widget scripts rely on `wp.editor`.
  36  remove_action( 'enqueue_block_editor_assets', 'wp_enqueue_editor_block_directory_assets' );
  37  
  38  wp_add_inline_script(
  39      'wp-edit-widgets',
  40      sprintf(
  41          'wp.domReady( function() {
  42              wp.editWidgets.initialize( "widgets-editor", %s );
  43          } );',
  44          wp_json_encode( $editor_settings )
  45      )
  46  );
  47  
  48  // Preload server-registered block schemas.
  49  wp_add_inline_script(
  50      'wp-blocks',
  51      'wp.blocks.unstable__bootstrapServerSideBlockDefinitions(' . wp_json_encode( get_block_editor_server_block_settings() ) . ');'
  52  );
  53  
  54  // Preload server-registered block bindings sources.
  55  $registered_sources = get_all_registered_block_bindings_sources();
  56  if ( ! empty( $registered_sources ) ) {
  57      $filtered_sources = array();
  58      foreach ( $registered_sources as $source ) {
  59          $filtered_sources[] = array(
  60              'name'        => $source->name,
  61              'label'       => $source->label,
  62              'usesContext' => $source->uses_context,
  63          );
  64      }
  65      $script = sprintf( 'for ( const source of %s ) { wp.blocks.registerBlockBindingsSource( source ); }', wp_json_encode( $filtered_sources ) );
  66      wp_add_inline_script(
  67          'wp-blocks',
  68          $script
  69      );
  70  }
  71  
  72  wp_add_inline_script(
  73      'wp-blocks',
  74      sprintf( 'wp.blocks.setCategories( %s );', wp_json_encode( get_block_categories( $block_editor_context ) ) ),
  75      'after'
  76  );
  77  
  78  wp_enqueue_script( 'wp-edit-widgets' );
  79  wp_enqueue_script( 'admin-widgets' );
  80  wp_enqueue_style( 'wp-edit-widgets' );
  81  
  82  /** This action is documented in wp-admin/edit-form-blocks.php */
  83  do_action( 'enqueue_block_editor_assets' );
  84  
  85  /** This action is documented in wp-admin/widgets-form.php */
  86  do_action( 'sidebar_admin_setup' );
  87  
  88  require_once  ABSPATH . 'wp-admin/admin-header.php';
  89  
  90  /** This action is documented in wp-admin/widgets-form.php */
  91  do_action( 'widgets_admin_page' );
  92  ?>
  93  
  94  <div id="widgets-editor" class="blocks-widgets-container">
  95      <?php // JavaScript is disabled. ?>
  96      <div class="wrap hide-if-js widgets-editor-no-js">
  97          <h1 class="wp-heading-inline"><?php echo esc_html( $title ); ?></h1>
  98          <?php
  99          if ( file_exists( WP_PLUGIN_DIR . '/classic-widgets/classic-widgets.php' ) ) {
 100              // If Classic Widgets is already installed, provide a link to activate the plugin.
 101              $installed           = true;
 102              $plugin_activate_url = wp_nonce_url( 'plugins.php?action=activate&amp;plugin=classic-widgets/classic-widgets.php', 'activate-plugin_classic-widgets/classic-widgets.php' );
 103              $message             = sprintf(
 104                  /* translators: %s: Link to activate the Classic Widgets plugin. */
 105                  __( 'The block widgets require JavaScript. Please enable JavaScript in your browser settings, or activate the <a href="%s">Classic Widgets plugin</a>.' ),
 106                  esc_url( $plugin_activate_url )
 107              );
 108          } else {
 109              // If Classic Widgets is not installed, provide a link to install it.
 110              $installed          = false;
 111              $plugin_install_url = wp_nonce_url( self_admin_url( 'update.php?action=install-plugin&plugin=classic-widgets' ), 'install-plugin_classic-widgets' );
 112              $message            = sprintf(
 113                  /* translators: %s: A link to install the Classic Widgets plugin. */
 114                  __( 'The block widgets require JavaScript. Please enable JavaScript in your browser settings, or install the <a href="%s">Classic Widgets plugin</a>.' ),
 115                  esc_url( $plugin_install_url )
 116              );
 117          }
 118          /**
 119           * Filters the message displayed in the block widget interface when JavaScript is
 120           * not enabled in the browser.
 121           *
 122           * @since 6.4.0
 123           *
 124           * @param string $message The message being displayed.
 125           * @param bool   $installed Whether the Classic Widget plugin is installed.
 126           */
 127          $message = apply_filters( 'block_widgets_no_javascript_message', $message, $installed );
 128          wp_admin_notice(
 129              $message,
 130              array(
 131                  'type'               => 'error',
 132                  'additional_classes' => array( 'hide-if-js' ),
 133              )
 134          );
 135          ?>
 136      </div>
 137  </div>
 138  
 139  <?php
 140  /** This action is documented in wp-admin/widgets-form.php */
 141  do_action( 'sidebar_admin_page' );
 142  
 143  require_once  ABSPATH . 'wp-admin/admin-footer.php';