/*
 * Copyright (C) 2012 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.android.gallery3d.app;

import java.util.HashMap;

public class TransitionStore {
    private HashMap<Object, Object> mStorage = new HashMap<Object, Object>();

    public void put(Object key, Object value) {
        mStorage.put(key, value);
    }

    public <T> void putIfNotPresent(Object key, T valueIfNull) {
        mStorage.put(key, get(key, valueIfNull));
    }

    @SuppressWarnings("unchecked")
    public <T> T get(Object key) {
        return (T) mStorage.get(key);
    }

    @SuppressWarnings("unchecked")
    public <T> T get(Object key, T valueIfNull) {
        T value = (T) mStorage.get(key);
        return value == null ? valueIfNull : value;
    }

    public void clear() {
        mStorage.clear();
    }
}