Home | History | Annotate | Download | only in internal
      1 /*
      2  * Copyright (C) 2012 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.android.inputmethod.keyboard.internal;
     18 
     19 import com.android.inputmethod.keyboard.Key;
     20 import com.android.inputmethod.latin.utils.CollectionUtils;
     21 
     22 import java.util.HashMap;
     23 
     24 public final class KeysCache {
     25     private final HashMap<Key, Key> mMap = CollectionUtils.newHashMap();
     26 
     27     public void clear() {
     28         mMap.clear();
     29     }
     30 
     31     public Key get(final Key key) {
     32         final Key existingKey = mMap.get(key);
     33         if (existingKey != null) {
     34             // Reuse the existing element that equals to "key" without adding "key" to the map.
     35             return existingKey;
     36         }
     37         mMap.put(key, key);
     38         return key;
     39     }
     40 }
     41