1 /*
2  * Copyright (C) 2011 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 package android.animation;
17 
18 import com.google.common.util.concurrent.AbstractFuture;
19 
20 /**
21  * Simple extension of {@link com.google.common.util.concurrent.AbstractFuture} which exposes a new
22  * release() method which calls the protected
23  * {@link com.google.common.util.concurrent.AbstractFuture#set(Object)} method internally. It
24  * also exposes the protected {@link AbstractFuture#setException(Throwable)} method.
25  */
26 public class FutureWaiter extends AbstractFuture<Boolean> {
27 
28     /**
29      * Release the Future currently waiting on
30      * {@link com.google.common.util.concurrent.AbstractFuture#get()}.
31      */
release()32     public void release() {
33         super.set(true);
34     }
35 
36     /**
37      * Used to indicate failure (when the result value is false).
38      */
set(boolean result)39     public void set(boolean result) {
40         super.set(result);
41     }
42 
43     @Override
setException(Throwable throwable)44     public boolean setException(Throwable throwable) {
45         return super.setException(throwable);
46     }
47 }
48