Puneet Lall | 9c94ab3 | 2014-12-02 13:12:53 -0800 | [diff] [blame] | 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 com.android.camera.util.Callback; |
| 20 | |
| 21 | /** |
| 22 | * Note: This interface, alone, does not provide a means of guaranteeing which |
| 23 | * thread the callback will be invoked on. Use |
| 24 | * {@link com.android.camera.async.ConcurrentState}, {@link BufferQueue}, or |
| 25 | * {@link java.util.concurrent.Future} instead to guarantee thread-safety. |
| 26 | */ |
| 27 | public interface Listenable<T> extends SafeCloseable { |
| 28 | /** |
| 29 | * Sets the callback, removing any existing callback first. |
| 30 | */ |
| 31 | public void setCallback(Callback<T> callback); |
| 32 | |
| 33 | /** |
| 34 | * Removes any existing callback. |
| 35 | */ |
| 36 | @Override |
| 37 | public void close(); |
| 38 | } |