Replace Differential hard-coded status "<select />" with tokenizer

Summary:
Ref T2543. This updates the UI control in the web UI. Also:

  - This implicitly makes this queryable with the API (`differential.revision.search`); it previously was not.
  - This does NOT migrate existing saved queries. I'll do those in the next change, and hold this until it happens.
  - This will break some existing `/differential/?status=XYZ` links. For example, `status=open` now needs to be `status=open()`. I couldn't find any of these in the upstream, and I suspect these are rare in the wild (users would normally link directly to saved queries, not use URI query construction).

Test Plan: {F5093611}

Reviewers: chad

Reviewed By: chad

Maniphest Tasks: T2543

Differential Revision: https://secure.phabricator.com/D18393

src/applications/differential/constants/DifferentialLegacyQuery.php

@@ -28,8 +28,12 @@ final class DifferentialLegacyQuery
           $status));
     }
 
+    return self::getLegacyValues($map[$status]);
+  }
+
+  public static function getLegacyValues(array $modern_values) {
     $values = array();
-    foreach ($map[$status] as $status_constant) {
+    foreach ($modern_values as $status_constant) {
       $status_object = DifferentialRevisionStatus::newForStatus(
         $status_constant);
 

src/applications/differential/query/DifferentialRevisionQuery.php

@@ -25,6 +25,7 @@ final class DifferentialRevisionQuery
   private $repositoryPHIDs;
   private $updatedEpochMin;
   private $updatedEpochMax;
+  private $statuses;
 
   const ORDER_MODIFIED      = 'order-modified';
   const ORDER_CREATED       = 'order-created';
@@ -146,6 +147,11 @@ final class DifferentialRevisionQuery
     return $this;
   }
 
+  public function withStatuses(array $statuses) {
+    $this->statuses = $statuses;
+    return $this;
+  }
+
 
   /**
    * Filter results to revisions on given branches.
@@ -705,6 +711,13 @@ final class DifferentialRevisionQuery
         $statuses);
     }
 
+    if ($this->statuses !== null) {
+      $where[] = qsprintf(
+        $conn_r,
+        'r.status in (%Ls)',
+        DifferentialLegacyQuery::getLegacyValues($this->statuses));
+    }
+
     $where[] = $this->buildWhereClauseParts($conn_r);
     return $this->formatWhereClause($where);
   }

src/applications/differential/query/DifferentialRevisionSearchEngine.php

@@ -41,8 +41,8 @@ final class DifferentialRevisionSearchEngine
       $query->withRepositoryPHIDs($map['repositoryPHIDs']);
     }
 
-    if ($map['status']) {
-      $query->withStatus($map['status']);
+    if ($map['statuses']) {
+      $query->withStatuses($map['statuses']);
     }
 
     return $query;
@@ -77,10 +77,11 @@ final class DifferentialRevisionSearchEngine
         ->setDatasource(new DiffusionRepositoryFunctionDatasource())
         ->setDescription(
           pht('Find revisions from specific repositories.')),
-      id(new PhabricatorSearchSelectField())
-        ->setLabel(pht('Status'))
-        ->setKey('status')
-        ->setOptions($this->getStatusOptions())
+      id(new PhabricatorSearchDatasourceField())
+        ->setLabel(pht('Statuses'))
+        ->setKey('statuses')
+        ->setAliases(array('status'))
+        ->setDatasource(new DifferentialRevisionStatusFunctionDatasource())
         ->setDescription(
           pht('Find revisions with particular statuses.')),
     );
@@ -115,7 +116,7 @@ final class DifferentialRevisionSearchEngine
 
         return $query
           ->setParameter('responsiblePHIDs', array($viewer->getPHID()))
-          ->setParameter('status', DifferentialLegacyQuery::STATUS_OPEN)
+          ->setParameter('statuses', array('open()'))
           ->setParameter('bucket', $bucket_key);
       case 'authored':
         return $query