Chris Wren | 470c1ac | 2014-05-21 15:28:10 -0400 | [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 | package com.android.server.notification; |
| 17 | |
Chris Wren | 470c1ac | 2014-05-21 15:28:10 -0400 | [diff] [blame] | 18 | import java.util.concurrent.TimeUnit; |
| 19 | |
| 20 | /** |
| 21 | * Represents future work required to extract signals from notifications for ranking. |
| 22 | * |
| 23 | * {@hide} |
| 24 | */ |
| 25 | public abstract class RankingReconsideration implements Runnable { |
| 26 | private static final long IMMEDIATE = 0l; |
| 27 | |
| 28 | private static final int START = 0; |
| 29 | private static final int RUNNING = 1; |
| 30 | private static final int DONE = 2; |
| 31 | private static final int CANCELLED = 3; |
| 32 | |
| 33 | private int mState; |
| 34 | private long mDelay; |
| 35 | protected String mKey; |
| 36 | |
| 37 | public RankingReconsideration(String key) { |
| 38 | this(key, IMMEDIATE); |
| 39 | } |
| 40 | |
| 41 | public RankingReconsideration(String key, long delay) { |
| 42 | mDelay = delay; |
| 43 | mKey = key; |
| 44 | mState = START; |
| 45 | } |
| 46 | |
| 47 | public String getKey() { |
| 48 | return mKey; |
| 49 | } |
| 50 | |
| 51 | public void run() { |
| 52 | if (mState == START) { |
| 53 | mState = RUNNING; |
| 54 | |
| 55 | work(); |
| 56 | |
| 57 | mState = DONE; |
| 58 | synchronized (this) { |
| 59 | notifyAll(); |
| 60 | } |
| 61 | } |
| 62 | } |
| 63 | |
| 64 | public long getDelay(TimeUnit unit) { |
| 65 | return unit.convert(mDelay, TimeUnit.MILLISECONDS); |
| 66 | } |
| 67 | |
| 68 | public boolean cancel(boolean mayInterruptIfRunning) { |
| 69 | if (mState == START) { // can't cancel if running or done |
| 70 | mState = CANCELLED; |
| 71 | return true; |
| 72 | } |
| 73 | return false; |
| 74 | } |
| 75 | |
| 76 | public boolean isCancelled() { |
| 77 | return mState == CANCELLED; |
| 78 | } |
| 79 | |
| 80 | public boolean isDone() { |
| 81 | return mState == DONE; |
| 82 | } |
| 83 | |
| 84 | /** |
| 85 | * Analyse the notification. This will be called on a worker thread. To |
| 86 | * avoid concurrency issues, do not use held references to modify the |
| 87 | * {@link NotificationRecord}. |
| 88 | */ |
| 89 | public abstract void work(); |
| 90 | |
| 91 | /** |
| 92 | * Apply any computed changes to the notification record. This method will be |
| 93 | * called on the main service thread, synchronized on he mNotificationList. |
| 94 | * @param record The locked record to be updated. |
| 95 | */ |
| 96 | public abstract void applyChangesLocked(NotificationRecord record); |
| 97 | } |