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 
17 package com.android.camera.async;
18 
19 import javax.annotation.Nonnull;
20 
21 /**
22  * This provides empty, NoOp implementation of generic updateable objects.
23  */
24 public 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 
Updatables()32     private Updatables() {
33     }
34 
getNoOp()35     public static <T> Updatable<T> getNoOp() {
36         return NOOP;
37     }
38 }
39