Disable candidate pane controller just after suggestions are set

Change-Id: I62e24bc39e80e2b51d1a29d093a96a8480254da2
diff --git a/java/src/com/android/inputmethod/latin/CandidateView.java b/java/src/com/android/inputmethod/latin/CandidateView.java
index 01b1dd6..e9bc0e8 100644
--- a/java/src/com/android/inputmethod/latin/CandidateView.java
+++ b/java/src/com/android/inputmethod/latin/CandidateView.java
@@ -371,6 +371,7 @@
         if (suggestions == null)
             return;
         mSuggestions = suggestions;
+        mExpandCandidatesPane.setEnabled(false);
         if (mShowingAutoCorrectionInverted) {
             mHandler.postUpdateSuggestions();
         } else {
@@ -428,6 +429,7 @@
         } else {
             mCandidatesPaneControl.setVisibility(VISIBLE);
             mExpandCandidatesPane.setVisibility(VISIBLE);
+            mExpandCandidatesPane.setEnabled(true);
         }
 
         final int countInStrip = params.mCountInStrip;