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.gallery3d.app; 18 19 import java.util.HashMap; 20 21 public class TransitionStore { 22 private HashMap<Object, Object> mStorage = new HashMap<Object, Object>(); 23 24 public void put(Object key, Object value) { 25 mStorage.put(key, value); 26 } 27 28 public <T> void putIfNotPresent(Object key, T valueIfNull) { 29 mStorage.put(key, get(key, valueIfNull)); 30 } 31 32 @SuppressWarnings("unchecked") 33 public <T> T get(Object key) { 34 return (T) mStorage.get(key); 35 } 36 37 @SuppressWarnings("unchecked") 38 public <T> T get(Object key, T valueIfNull) { 39 T value = (T) mStorage.get(key); 40 return value == null ? valueIfNull : value; 41 } 42 43 public void clear() { 44 mStorage.clear(); 45 } 46 } 47
