Use Set to group Keys in Keyboard instead of List

In deriving various shift stated alphabet keyboards from base/main
keyboard, almost all keys should be shared among variants.  Grouping
keys in Set instead of List is a essential refactor to have.

Bug: 5002108
Bug: 5679585
Change-Id: Idd5644d1c45a3276a24b61c984619c03d4e4c54c

1 files changed, 2 insertions, 4 deletions

diff --git a/java/src/com/android/inputmethod/keyboard/internal/KeyboardParams.java b/java/src/com/android/inputmethod/keyboard/internal/KeyboardParams.java
index 64cd37c4b..5248016f1 100644
--- a/java/src/com/android/inputmethod/keyboard/internal/KeyboardParams.java
+++ b/java/src/com/android/inputmethod/keyboard/internal/KeyboardParams.java
@@ -23,10 +23,8 @@ import com.android.inputmethod.keyboard.Keyboard;
 import com.android.inputmethod.keyboard.KeyboardId;
 import com.android.inputmethod.latin.LatinImeLogger;
 
-import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.HashSet;
-import java.util.List;
 import java.util.Map;
 import java.util.Set;
 
@@ -59,8 +57,8 @@ public class KeyboardParams {
     public int GRID_WIDTH;
     public int GRID_HEIGHT;
 
-    public final List<Key> mKeys = new ArrayList<Key>();
-    public final List<Key> mShiftKeys = new ArrayList<Key>();
+    public final Set<Key> mKeys = new HashSet<Key>();
+    public final Set<Key> mShiftKeys = new HashSet<Key>();
     public final Set<Key> mShiftLockKeys = new HashSet<Key>();
     public final Map<Key, Drawable> mShiftedIcons = new HashMap<Key, Drawable>();
     public final Map<Key, Drawable> mUnshiftedIcons = new HashMap<Key, Drawable>();