Show open Differential revisions in Diffusion browse views

Summary:
Still some rough edges, but this adds a table of open revisions to Diffusion.
See T262.

I'll make this a little better (e.g., "see all.." instead of arbitrary 10 cap,
or maybe move to top-level nav?) but I think I have to refactor some other stuff
first. This should let us root out any major issues, at least.

NOTE: You must associate Arcanist Projects with Repositories (in Repositories ->
Arcanist Projects -> Edit) for this to work!

Also made paths include all parent paths so that browse views of directories
will work.

Test Plan: Uploaded a diff which affected "/blah", it appeared when browsing "/"
and "/blah".

Reviewers: jungejason, nh, tuomaspelkonen, aran

Reviewed By: jungejason

CC: aran, jungejason

Differential Revision: 979

src/applications/diffusion/controller/base/DiffusionController.php

@@ -108,6 +108,44 @@ abstract class DiffusionController extends PhabricatorController {
     return $crumbs;
   }
 
+  protected function buildOpenRevisions() {
+    $drequest = $this->getDiffusionRequest();
+    $repository = $drequest->getRepository();
+    $path = $drequest->getPath();
+
+    $path_map = id(new DiffusionPathIDQuery(array($path)))->loadPathIDs();
+    $path_id = idx($path_map, $path);
+    if (!$path_id) {
+      return null;
+    }
+
+    $revisions = id(new DifferentialRevisionQuery())
+      ->withPath($repository->getID(), $path_id)
+      ->withStatus(DifferentialRevisionQuery::STATUS_OPEN)
+      ->setOrder(DifferentialRevisionQuery::ORDER_PATH_MODIFIED)
+      ->setLimit(10)
+      ->needRelationships(true)
+      ->execute();
+
+    if (!$revisions) {
+      return null;
+    }
+
+    $view = id(new DifferentialRevisionListView())
+      ->setRevisions($revisions)
+      ->setUser($this->getRequest()->getUser());
+
+    $phids = $view->getRequiredHandlePHIDs();
+    $handles = id(new PhabricatorObjectHandleData($phids))->loadHandles();
+    $view->setHandles($handles);
+
+    $panel = new AphrontPanelView();
+    $panel->setHeader('Pending Differential Revisions');
+    $panel->appendChild($view);
+
+    return $panel;
+  }
+
   private function buildCrumbList(array $spec = array()) {
     $drequest = $this->getDiffusionRequest();
 

src/applications/diffusion/controller/base/__init__.php

@@ -8,10 +8,15 @@
 
 phutil_require_module('phabricator', 'aphront/response/webpage');
 phutil_require_module('phabricator', 'applications/base/controller/base');
+phutil_require_module('phabricator', 'applications/differential/query/revision');
+phutil_require_module('phabricator', 'applications/differential/view/revisionlist');
+phutil_require_module('phabricator', 'applications/diffusion/query/pathid/base');
 phutil_require_module('phabricator', 'applications/diffusion/request/base');
 phutil_require_module('phabricator', 'applications/diffusion/view/base');
+phutil_require_module('phabricator', 'applications/phid/handle/data');
 phutil_require_module('phabricator', 'infrastructure/env');
 phutil_require_module('phabricator', 'view/layout/crumbs');
+phutil_require_module('phabricator', 'view/layout/panel');
 phutil_require_module('phabricator', 'view/layout/sidenav');
 
 phutil_require_module('phutil', 'markup');