1 /* 2 * Copyright (C) 2012 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); you may not 5 * use this file except in compliance with the License. You may obtain a copy of 6 * 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, WITHOUT 12 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the 13 * License for the specific language governing permissions and limitations under 14 * 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.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
