Issue #2283969 by tim.plunkett: Add a protected BlockBase::blockAccess() to contain plugin-specific logic.

core/modules/aggregator/src/Plugin/Block/AggregatorFeedBlock.php

@@ -100,7 +100,7 @@ class AggregatorFeedBlock extends BlockBase implements ContainerFactoryPluginInt
   /**
    * {@inheritdoc}
    */
-  public function access(AccountInterface $account) {
+  protected function blockAccess(AccountInterface $account) {
     // Only grant access to users with the 'access news feeds' permission.
     return $account->hasPermission('access news feeds');
   }

core/modules/block/src/BlockBase.php

@@ -112,8 +112,23 @@ abstract class BlockBase extends ContextAwarePluginBase implements BlockPluginIn
    * {@inheritdoc}
    */
   public function access(AccountInterface $account) {
-    // By default, the block is visible unless user-configured rules indicate
-    // that it should be hidden.
+    // @todo Move block visibility here in https://drupal.org/node/2278541.
+    return $this->blockAccess($account);
+  }
+
+  /**
+   * Indicates whether the block should be shown.
+   *
+   * @param \Drupal\Core\Session\AccountInterface $account
+   *   The user session for which to check access.
+   *
+   * @return bool
+   *   TRUE if the block should be shown, or FALSE otherwise.
+   *
+   * @see self::access()
+   */
+  protected function blockAccess(AccountInterface $account) {
+    // By default, the block is visible.
     return TRUE;
   }
 

core/modules/block/tests/modules/block_test/src/Plugin/Block/TestBlockInstantiation.php

@@ -32,7 +32,7 @@ class TestBlockInstantiation extends BlockBase {
   /**
    * {@inheritdoc}
    */
-  public function access(AccountInterface $account) {
+  protected function blockAccess(AccountInterface $account) {
     return $account->hasPermission('access content');
   }
 

core/modules/forum/src/Plugin/Block/ForumBlockBase.php

@@ -56,7 +56,7 @@ abstract class ForumBlockBase extends BlockBase {
   /**
    * {@inheritdoc}
    */
-  public function access(AccountInterface $account) {
+  protected function blockAccess(AccountInterface $account) {
     return $account->hasPermission('access content');
   }
 

core/modules/language/src/Plugin/Block/LanguageBlock.php

@@ -66,7 +66,7 @@ class LanguageBlock extends BlockBase implements ContainerFactoryPluginInterface
   /**
    * {@inheritdoc}
    */
-  function access(AccountInterface $account) {
+  protected function blockAccess(AccountInterface $account) {
     return $this->languageManager->isMultilingual();
   }
 

core/modules/node/src/Plugin/Block/SyndicateBlock.php

@@ -33,7 +33,7 @@ class SyndicateBlock extends BlockBase {
   /**
    * {@inheritdoc}
    */
-  public function access(AccountInterface $account) {
+  protected function blockAccess(AccountInterface $account) {
     return $account->hasPermission('access content');
   }
 

core/modules/search/src/Plugin/Block/SearchBlock.php

@@ -26,7 +26,7 @@ class SearchBlock extends BlockBase {
   /**
    * {@inheritdoc}
    */
-  public function access(AccountInterface $account) {
+  protected function blockAccess(AccountInterface $account) {
     return $account->hasPermission('search content');
   }
 

core/modules/statistics/src/Plugin/Block/StatisticsPopularBlock.php

@@ -55,7 +55,7 @@ class StatisticsPopularBlock extends BlockBase {
   /**
    * {@inheritdoc}
    */
-  public function access(AccountInterface $account) {
+  protected function blockAccess(AccountInterface $account) {
     if ($account->hasPermission('access content')) {
       $daytop = $this->configuration['top_day_num'];
       if (!$daytop || !($result = statistics_title_list('daycount', $daytop)) || !($this->day_list = node_title_list($result, t("Today's:")))) {

core/modules/system/src/Plugin/Block/SystemHelpBlock.php

@@ -78,7 +78,7 @@ class SystemHelpBlock extends BlockBase implements ContainerFactoryPluginInterfa
   /**
    * {@inheritdoc}
    */
-  public function access(AccountInterface $account) {
+  protected function blockAccess(AccountInterface $account) {
     $this->help = $this->getActiveHelp($this->request);
     return (bool) $this->help;
   }

core/modules/system/tests/modules/form_test/src/Plugin/Block/RedirectFormBlock.php

@@ -66,7 +66,7 @@ class RedirectFormBlock extends BlockBase implements ContainerFactoryPluginInter
   /**
    * {@inheritdoc}
    */
-  public function access(AccountInterface $account) {
+  protected function blockAccess(AccountInterface $account) {
     return TRUE;
   }
 

core/modules/user/src/Plugin/Block/UserLoginBlock.php

@@ -25,7 +25,7 @@ class UserLoginBlock extends BlockBase {
   /**
    * {@inheritdoc}
    */
-  public function access(AccountInterface $account) {
+  protected function blockAccess(AccountInterface $account) {
     $route_name = \Drupal::request()->attributes->get(RouteObjectInterface::ROUTE_NAME);
     return ($account->isAnonymous() && !in_array($route_name, array('user.register', 'user.login', 'user.logout')));
   }

core/modules/views/src/Plugin/Block/ViewsBlockBase.php

@@ -91,7 +91,7 @@ abstract class ViewsBlockBase extends BlockBase implements ContainerFactoryPlugi
   /**
    * {@inheritdoc}
    */
-  public function access(AccountInterface $account) {
+  protected function blockAccess(AccountInterface $account) {
     return $this->view->access($this->displayID);
   }