Show first 10 branches, then "More Branches" for commits on huge numbers of branches

Summary: Fixes T9562. We already do this for tags, but didn't have similar logic for branches. Implement that logic.

Test Plan:
- Set limit to 1, saw "More branches", clicked it, got the correct results.
- Verified that branch table with no specified commit still works properly.

Reviewers: chad

Reviewed By: chad

Maniphest Tasks: T9562

Differential Revision: https://secure.phabricator.com/D15284

src/applications/diffusion/controller/DiffusionBranchTableController.php

···
     $pager = id(new PHUIPagerView())
       ->readFromRequest($request);
 
-    // TODO: Add support for branches that contain commit
+    $params = array(
+      'offset' => $pager->getOffset(),
+      'limit' => $pager->getPageSize() + 1,
+    );
+
+    $contains = $drequest->getSymbolicCommit();
+    if (strlen($contains)) {
+      $params['contains'] = $contains;
+    }
+
     $branches = $this->callConduitWithDiffusionRequest(
       'diffusion.branchquery',
-      array(
-        'offset' => $pager->getOffset(),
-        'limit' => $pager->getPageSize() + 1,
-      ));
+      $params);
     $branches = $pager->sliceResults($branches);
 
     $branches = DiffusionRepositoryRef::loadAllFromDictionaries($branches);

src/applications/diffusion/controller/DiffusionCommitBranchesController.php

···
     $drequest = $this->getDiffusionRequest();
     $repository = $drequest->getRepository();
 
-    switch ($repository->getVersionControlSystem()) {
-      case PhabricatorRepositoryType::REPOSITORY_TYPE_SVN:
-        $branches = array();
-        break;
-      default:
-        $branches = $this->callConduitWithDiffusionRequest(
-          'diffusion.branchquery',
-          array(
-            'contains' => $drequest->getCommit(),
-          ));
-        break;
-    }
+    $branch_limit = 10;
+    $branches = DiffusionRepositoryRef::loadAllFromDictionaries(
+      $this->callConduitWithDiffusionRequest(
+        'diffusion.branchquery',
+        array(
+          'contains' => $drequest->getCommit(),
+          'limit' => $branch_limit + 1,
+        )));
 
-    $branches = DiffusionRepositoryRef::loadAllFromDictionaries($branches);
+    $has_more_branches = (count($branches) > $branch_limit);
+    $branches = array_slice($branches, 0, $branch_limit);
+
     $branch_links = array();
     foreach ($branches as $branch) {
       $branch_links[] = phutil_tag(
···
             )),
         ),
         $branch->getShortName());
+    }
+
+    if ($has_more_branches) {
+      $branch_links[] = phutil_tag(
+        'a',
+        array(
+          'href' => $drequest->generateURI(
+            array(
+              'action'  => 'branches',
+            )),
+        ),
+        pht("More Branches\xE2\x80\xA6"));
     }
 
     return id(new AphrontAjaxResponse())

src/applications/diffusion/controller/DiffusionCommitTagsController.php

···
     $repository = $drequest->getRepository();
 
     $tag_limit = 10;
-    switch ($repository->getVersionControlSystem()) {
-      case PhabricatorRepositoryType::REPOSITORY_TYPE_SVN:
-        $tags = array();
-        break;
-      default:
-        $tags = DiffusionRepositoryTag::newFromConduit(
-          $this->callConduitWithDiffusionRequest(
-            'diffusion.tagsquery',
-            array(
-              'commit' => $drequest->getCommit(),
-              'limit' => $tag_limit + 1,
-            )));
-        break;
-    }
+    $tags = DiffusionRepositoryTag::newFromConduit(
+      $this->callConduitWithDiffusionRequest(
+        'diffusion.tagsquery',
+        array(
+          'commit' => $drequest->getCommit(),
+          'limit' => $tag_limit + 1,
+        )));
+
     $has_more_tags = (count($tags) > $tag_limit);
     $tags = array_slice($tags, 0, $tag_limit);