Prepare supporting n-gram for user history dictionary.

Bug:17097992
Change-Id: Ic8bfde3d4cc0e720bf7681e08e16fb2ad94d5670

1 files changed, 7 insertions, 0 deletions

diff --git a/java/src/com/android/inputmethod/latin/PrevWordsInfo.java b/java/src/com/android/inputmethod/latin/PrevWordsInfo.java
index 76d4f57da..1b7e8f96d 100644
--- a/java/src/com/android/inputmethod/latin/PrevWordsInfo.java
+++ b/java/src/com/android/inputmethod/latin/PrevWordsInfo.java
@@ -126,6 +126,13 @@ public class PrevWordsInfo {
         }
     }
 
+    public PrevWordsInfo getTrimmedPrevWordsInfo(final int maxPrevWordCount) {
+        final int newSize = Math.min(maxPrevWordCount, mPrevWordsInfo.length);
+        // TODO: Quit creating a new array.
+        final WordInfo[] prevWordsInfo = Arrays.copyOf(mPrevWordsInfo, newSize);
+        return new PrevWordsInfo(prevWordsInfo);
+    }
+
     public int getPrevWordCount() {
         return mPrevWordsInfo.length;
     }