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 
put(Object key, Object value)24     public void put(Object key, Object value) {
25         mStorage.put(key, value);
26     }
27 
putIfNotPresent(Object key, T valueIfNull)28     public <T> void putIfNotPresent(Object key, T valueIfNull) {
29         mStorage.put(key, get(key, valueIfNull));
30     }
31 
32     @SuppressWarnings("unchecked")
get(Object key)33     public <T> T get(Object key) {
34         return (T) mStorage.get(key);
35     }
36 
37     @SuppressWarnings("unchecked")
get(Object key, T valueIfNull)38     public <T> T get(Object key, T valueIfNull) {
39         T value = (T) mStorage.get(key);
40         return value == null ? valueIfNull : value;
41     }
42 
clear()43     public void clear() {
44         mStorage.clear();
45     }
46 }
47