Prevent users from hiding unpublished inlines

Summary: Fixes T9135. This is (probably) never intended and can be confusing.

Test Plan: Saw no hide button on unpublished inlines. Saw hide button on published inlines. Clicked hide button.

Reviewers: chad

Reviewed By: chad

Maniphest Tasks: T9135

Differential Revision: https://secure.phabricator.com/D14014

src/infrastructure/diff/view/PHUIDiffInlineCommentDetailView.php

@@ -211,6 +211,7 @@ final class PHUIDiffInlineCommentDetailView
         ->addSigil('differential-inline-next')
         ->setMustCapture(true);
 
+      if ($this->canHide()) {
         $hide = id(new PHUIButtonView())
           ->setTag('a')
           ->setTooltip(pht('Hide Comment'))
@@ -218,7 +219,6 @@ final class PHUIDiffInlineCommentDetailView
           ->addSigil('hide-inline')
           ->setMustCapture(true);
 
-      if ($viewer_phid && $inline->getID() && $inline->supportsHiding()) {
         $nextprev->addButton($hide);
       }
 
@@ -456,4 +456,27 @@ final class PHUIDiffInlineCommentDetailView
     return $markup;
   }
 
+  private function canHide() {
+    $inline = $this->inlineComment;
+
+    if ($inline->isDraft()) {
+      return false;
+    }
+
+    if (!$inline->getID()) {
+      return false;
+    }
+
+    $viewer = $this->getUser();
+    if (!$viewer->isLoggedIn()) {
+      return false;
+    }
+
+    if (!$inline->supportsHiding()) {
+      return false;
+    }
+
+    return true;
+  }
+
 }