Allow the users to view their unsubmitted inline comments in one view

Summary:
1. Created a filter for user comments that are not submitted yet
2. surface this information to the user by providing a "Draft revisions" link on the differential home page.

Test Plan: tested on one of the diffs

Reviewers: nh, epriestley

Reviewed By: epriestley

CC: aran, epriestley, jungejason

Differential Revision: https://secure.phabricator.com/D1927

src/applications/differential/controller/revisionlist/DifferentialRevisionListController.php

@@ -219,6 +219,7 @@ final class DifferentialRevisionListController extends DifferentialController {
       array('revisions',  'Revisions'),
       array('reviews',    'Reviews'),
       array('subscribed', 'Subscribed'),
+      array('drafts',     'Draft Reviews'),
       array(null,         'All Revisions'),
       array('all',        'All'),
     );
@@ -248,6 +249,7 @@ final class DifferentialRevisionListController extends DifferentialController {
       'revisions'   => true,
       'reviews'     => true,
       'subscribed'  => true,
+      'drafts'      => true,
       'all'         => false,
     );
     if (!isset($requires[$filter])) {
@@ -262,6 +264,7 @@ final class DifferentialRevisionListController extends DifferentialController {
       'revisions'   => true,
       'reviews'     => true,
       'subscribed'  => true,
+      'drafts'      => true,
       'all'         => true,
     );
     if (!isset($allows[$filter])) {
@@ -276,6 +279,7 @@ final class DifferentialRevisionListController extends DifferentialController {
       'revisions'   => array('phid', 'status', 'order'),
       'reviews'     => array('phid', 'status', 'order'),
       'subscribed'  => array('phid', 'status', 'order'),
+      'drafts'      => array('phid', 'status', 'order'),
       'all'         => array('status', 'order'),
     );
     if (!isset($controls[$filter])) {
@@ -304,6 +308,9 @@ final class DifferentialRevisionListController extends DifferentialController {
       case 'subscribed':
         $query->withSubscribers(array($user_phid));
         break;
+      case 'drafts':
+        $query->withDraftRepliesByAuthors(array($user_phid));
+        break;
       case 'all':
         break;
       default:
@@ -416,6 +423,7 @@ final class DifferentialRevisionListController extends DifferentialController {
       case 'revisions':
       case 'reviews':
       case 'subscribed':
+      case 'drafts':
       case 'all':
         $titles = array(
           'revisions'   => 'Revisions by Author',

src/applications/differential/query/revision/DifferentialRevisionQuery.php

@@ -42,6 +42,7 @@ final class DifferentialRevisionQuery {
   const STATUS_ABANDONED  = 'status-abandoned';
 
   private $authors = array();
+  private $draftAuthors = array();
   private $ccs = array();
   private $reviewers = array();
   private $revIDs = array();
@@ -107,6 +108,18 @@ final class DifferentialRevisionQuery {
     return $this;
   }
 
+  /**
+   * Filter results to revisions with comments authored bythe given PHIDs
+   *
+   * @param array List of PHIDs of authors
+   * @return this
+   * @task config
+   */
+  public function withDraftRepliesByAuthors(array $author_phids) {
+    $this->draftAuthors = $author_phids;
+    return $this;
+  }
+
   /**
    * Filter results to revisions which CC one of the listed people. Calling this
    * function will clear anything set by previous calls to @{method:withCCs}.
@@ -561,6 +574,14 @@ final class DifferentialRevisionQuery {
         $this->responsibles);
     }
 
+    if ($this->draftAuthors) {
+      $joins[] = qsprintf(
+        $conn_r,
+        'JOIN %T inline_comment ON inline_comment.revisionID = r.id '.
+        'AND inline_comment.commentID is NULL',
+        id(new DifferentialInlineComment())->getTableName());
+    }
+
     $joins = implode(' ', $joins);
 
     return $joins;
@@ -594,6 +615,12 @@ final class DifferentialRevisionQuery {
         $this->authors);
     }
 
+    if ($this->draftAuthors) {
+      $where[] = qsprintf(
+        $conn_r,
+        'inline_comment.authorPHID IN (%Ls)',
+        $this->draftAuthors);
+    }
     if ($this->revIDs) {
       $where[] = qsprintf(
         $conn_r,

src/applications/differential/query/revision/__init__.php

@@ -11,6 +11,7 @@ phutil_require_module('arcanist', 'differential/constants/revisionstatus');
 
 phutil_require_module('phabricator', 'applications/differential/storage/affectedpath');
 phutil_require_module('phabricator', 'applications/differential/storage/diff');
+phutil_require_module('phabricator', 'applications/differential/storage/inlinecomment');
 phutil_require_module('phabricator', 'applications/differential/storage/revision');
 phutil_require_module('phabricator', 'storage/qsprintf');
 phutil_require_module('phabricator', 'storage/queryfx');