When all actions in a submenu are disabled, disable the submenu header

Summary: Fixes T11240. Also simplify things a little and share a bit more code.

Test Plan:
  - Viewed revisions and tasks, opened submenu.
  - Viewed as a user without edit permission, saw the menus greyed out.

Reviewers: chad

Reviewed By: chad

Maniphest Tasks: T11240

Differential Revision: https://secure.phabricator.com/D16201

src/applications/differential/controller/DifferentialRevisionViewController.php

@@ -527,22 +527,16 @@ final class DifferentialRevisionViewController extends DifferentialController {
       $viewer,
       $revision);
 
-    $parent_key = DifferentialRevisionHasParentRelationship::RELATIONSHIPKEY;
-    $child_key = DifferentialRevisionHasChildRelationship::RELATIONSHIPKEY;
+    $revision_actions = array(
+      DifferentialRevisionHasParentRelationship::RELATIONSHIPKEY,
+      DifferentialRevisionHasChildRelationship::RELATIONSHIPKEY,
+    );
 
-    $revision_submenu = array();
+    $revision_submenu = $relationship_list->newActionSubmenu($revision_actions)
+      ->setName(pht('Edit Related Revisions...'))
+      ->setIcon('fa-cog');
 
-    $revision_submenu[] = $relationship_list->getRelationship($parent_key)
-      ->newAction($revision);
-
-    $revision_submenu[] = $relationship_list->getRelationship($child_key)
-      ->newAction($revision);
-
-    $curtain->addAction(
-      id(new PhabricatorActionView())
-        ->setName(pht('Edit Related Revisions...'))
-        ->setIcon('fa-cog')
-        ->setSubmenu($revision_submenu));
+    $curtain->addAction($revision_submenu);
 
     $relationship_submenu = $relationship_list->newActionMenu();
     if ($relationship_submenu) {

src/applications/maniphest/controller/ManiphestTaskDetailController.php

@@ -199,28 +199,18 @@ final class ManiphestTaskDetailController extends ManiphestController {
       $viewer,
       $task);
 
-    $parent_key = ManiphestTaskHasParentRelationship::RELATIONSHIPKEY;
-    $subtask_key = ManiphestTaskHasSubtaskRelationship::RELATIONSHIPKEY;
-    $merge_key = ManiphestTaskMergeInRelationship::RELATIONSHIPKEY;
-    $close_key = ManiphestTaskCloseAsDuplicateRelationship::RELATIONSHIPKEY;
+    $submenu_actions = array(
+      ManiphestTaskHasParentRelationship::RELATIONSHIPKEY,
+      ManiphestTaskHasSubtaskRelationship::RELATIONSHIPKEY,
+      ManiphestTaskMergeInRelationship::RELATIONSHIPKEY,
+      ManiphestTaskCloseAsDuplicateRelationship::RELATIONSHIPKEY,
+    );
 
-    $task_submenu[] = $relationship_list->getRelationship($parent_key)
-      ->newAction($task);
+    $task_submenu = $relationship_list->newActionSubmenu($submenu_actions)
+      ->setName(pht('Edit Related Tasks...'))
+      ->setIcon('fa-anchor');
 
-    $task_submenu[] = $relationship_list->getRelationship($subtask_key)
-      ->newAction($task);
-
-    $task_submenu[] = $relationship_list->getRelationship($merge_key)
-      ->newAction($task);
-
-    $task_submenu[] = $relationship_list->getRelationship($close_key)
-      ->newAction($task);
-
-    $curtain->addAction(
-      id(new PhabricatorActionView())
-        ->setName(pht('Edit Related Tasks...'))
-        ->setIcon('fa-anchor')
-        ->setSubmenu($task_submenu));
+    $curtain->addAction($task_submenu);
 
     $relationship_submenu = $relationship_list->newActionMenu();
     if ($relationship_submenu) {

src/applications/search/controller/PhabricatorSearchBaseController.php

@@ -2,13 +2,6 @@
 
 abstract class PhabricatorSearchBaseController extends PhabricatorController {
 
-
-  const ACTION_ATTACH       = 'attach';
-  const ACTION_MERGE        = 'merge';
-  const ACTION_DEPENDENCIES = 'dependencies';
-  const ACTION_BLOCKS       = 'blocks';
-  const ACTION_EDGE         = 'edge';
-
   protected function loadRelationshipObject() {
     $request = $this->getRequest();
     $viewer = $this->getViewer();

src/applications/search/relationship/PhabricatorObjectRelationshipList.php

@@ -46,6 +46,26 @@ final class PhabricatorObjectRelationshipList extends Phobject {
     return $this->relationships;
   }
 
+  public function newActionSubmenu(array $keys) {
+    $object = $this->getObject();
+
+    $actions = array();
+
+    foreach ($keys as $key) {
+      $relationship = $this->getRelationship($key);
+      if (!$relationship) {
+        throw new Exception(
+          pht(
+            'No object relationship of type "%s" exists.',
+            $key));
+      }
+
+      $actions[$key] = $relationship->newAction($object);
+    }
+
+    return $this->newMenuWithActions($actions);
+  }
+
   public function newActionMenu() {
     $relationships = $this->getRelationships();
     $object = $this->getObject();
@@ -65,9 +85,22 @@ final class PhabricatorObjectRelationshipList extends Phobject {
 
     $actions = msort($actions, 'getName');
 
-    return id(new PhabricatorActionView())
+    return $this->newMenuWithActions($actions)
       ->setName(pht('Edit Related Objects...'))
-      ->setIcon('fa-link')
+      ->setIcon('fa-link');
+  }
+
+  private function newMenuWithActions(array $actions) {
+    $any_enabled = false;
+    foreach ($actions as $action) {
+      if (!$action->getDisabled()) {
+        $any_enabled = true;
+        break;
+      }
+    }
+
+    return id(new PhabricatorActionView())
+      ->setDisabled(!$any_enabled)
       ->setSubmenu($actions);
   }
 

src/view/layout/PhabricatorActionView.php

@@ -84,6 +84,10 @@ final class PhabricatorActionView extends AphrontView {
     return $this;
   }
 
+  public function getDisabled() {
+    return $this->disabled;
+  }
+
   public function setWorkflow($workflow) {
     $this->workflow = $workflow;
     return $this;