From 1d0609d386cbaeb986cd14bbd849940052dba39b Mon Sep 17 00:00:00 2001
From: Marc Blank <mblank@google.com>
Date: Sun, 17 Jul 2011 17:24:51 -0700
Subject: [PATCH] Don't allow actions on empty sets

* Not sure how this could have happened, except possibly for some
  race condition
* Let's make sure it's impossible

Bug: 5032454
Change-Id: Ibd4de22dc5298fbaaf224cf4286f63bdc50aa7b9
---
 src/com/android/email/activity/MessageListFragment.java | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/com/android/email/activity/MessageListFragment.java b/src/com/android/email/activity/MessageListFragment.java
index a426af7b4..12a9650f0 100644
--- a/src/com/android/email/activity/MessageListFragment.java
+++ b/src/com/android/email/activity/MessageListFragment.java
@@ -1375,6 +1375,7 @@ public class MessageListFragment extends ListFragment
         @Override
         public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
             Set<Long> selectedConversations = mListAdapter.getSelectedSet();
+            if (selectedConversations.isEmpty()) return true;
             switch (item.getItemId()) {
                 case R.id.mark_read:
                     // Note - marking as read does not trigger auto-advance.