1/*
2 * Copyright (C) 2014 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.camera.async;
18
19import javax.annotation.Nonnull;
20
21/**
22 * This provides empty, NoOp implementation of generic updateable objects.
23 */
24public final class Updatables {
25    private static final Updatable NOOP = new Updatable() {
26        @Override
27        public void update(@Nonnull Object o) {
28            // Do nothing.
29        }
30    };
31
32    private Updatables() {
33    }
34
35    public static <T> Updatable<T> getNoOp() {
36        return NOOP;
37    }
38}
39