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
17package com.android.gallery3d.app;
18
19import java.util.HashMap;
20
21public 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