Disable Maniphest task list grips in panel rendering contexts

Summary:
Fixes T5467.

  - Let search engines figure out if they're rendering for a panel or not.
  - If Maniphest is rendering a panel, turn off the grips and batch selection.

Test Plan:
  - Viewed task panels (no grips).
  - Viewed non-panel query results (grips).

Reviewers: chad

Reviewed By: chad

Subscribers: epriestley

Maniphest Tasks: T5467

Differential Revision: https://secure.phabricator.com/D9714

src/applications/dashboard/paneltype/PhabricatorDashboardPanelTypeQuery.php

@@ -80,6 +80,7 @@ final class PhabricatorDashboardPanelTypeQuery
     }
 
     $engine->setViewer($viewer);
+    $engine->setContext(PhabricatorApplicationSearchEngine::CONTEXT_PANEL);
 
     $key = $panel->getProperty('key');
     if ($engine->isBuiltinQuery($key)) {

src/applications/maniphest/query/ManiphestTaskSearchEngine.php

@@ -532,6 +532,10 @@ final class ManiphestTaskSearchEngine
 
     $viewer = $this->requireViewer();
 
+    if ($this->isPanelContext()) {
+      $can_edit_priority = false;
+      $can_bulk_edit = false;
+    } else {
       $can_edit_priority = PhabricatorPolicyFilter::hasCapability(
         $viewer,
         $this->getApplication(),
@@ -541,6 +545,7 @@ final class ManiphestTaskSearchEngine
         $viewer,
         $this->getApplication(),
         ManiphestCapabilityBulkEdit::CAPABILITY);
+    }
 
     return id(new ManiphestTaskResultListView())
       ->setUser($viewer)

src/applications/search/engine/PhabricatorApplicationSearchEngine.php

@@ -22,6 +22,10 @@ abstract class PhabricatorApplicationSearchEngine {
   private $errors = array();
   private $customFields = false;
   private $request;
+  private $context;
+
+  const CONTEXT_LIST  = 'list';
+  const CONTEXT_PANEL = 'panel';
 
   public function setViewer(PhabricatorUser $viewer) {
     $this->viewer = $viewer;
@@ -35,6 +39,15 @@ abstract class PhabricatorApplicationSearchEngine {
     return $this->viewer;
   }
 
+  public function setContext($context) {
+    $this->context = $context;
+    return $this;
+  }
+
+  public function isPanelContext() {
+    return ($this->context == self::CONTEXT_PANEL);
+  }
+
   public function saveQuery(PhabricatorSavedQuery $query) {
     $query->setEngineClassName(get_class($this));