1 /* 2 * Copyright (C) 2019 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.systemui; 18 19 import android.annotation.NonNull; 20 import android.app.Notification; 21 import android.os.Handler; 22 import android.os.Looper; 23 import android.util.ArraySet; 24 25 import com.android.internal.annotations.VisibleForTesting; 26 import com.android.systemui.statusbar.NotificationInteractionTracker; 27 import com.android.systemui.statusbar.NotificationLifetimeExtender; 28 import com.android.systemui.statusbar.notification.collection.NotificationEntry; 29 import com.android.systemui.util.time.SystemClock; 30 31 import javax.inject.Inject; 32 33 /** 34 * Extends the lifetime of foreground notification services such that they show for at least 35 * five seconds 36 */ 37 public class ForegroundServiceLifetimeExtender implements NotificationLifetimeExtender { 38 39 private static final String TAG = "FGSLifetimeExtender"; 40 @VisibleForTesting 41 static final int MIN_FGS_TIME_MS = 5000; 42 43 private NotificationSafeToRemoveCallback mNotificationSafeToRemoveCallback; 44 private ArraySet<NotificationEntry> mManagedEntries = new ArraySet<>(); 45 private Handler mHandler = new Handler(Looper.getMainLooper()); 46 private final SystemClock mSystemClock; 47 private final NotificationInteractionTracker mInteractionTracker; 48 49 @Inject ForegroundServiceLifetimeExtender( NotificationInteractionTracker interactionTracker, SystemClock systemClock)50 public ForegroundServiceLifetimeExtender( 51 NotificationInteractionTracker interactionTracker, 52 SystemClock systemClock) { 53 mSystemClock = systemClock; 54 mInteractionTracker = interactionTracker; 55 } 56 57 @Override setCallback(@onNull NotificationSafeToRemoveCallback callback)58 public void setCallback(@NonNull NotificationSafeToRemoveCallback callback) { 59 mNotificationSafeToRemoveCallback = callback; 60 } 61 62 @Override shouldExtendLifetime(@onNull NotificationEntry entry)63 public boolean shouldExtendLifetime(@NonNull NotificationEntry entry) { 64 if ((entry.getSbn().getNotification().flags 65 & Notification.FLAG_FOREGROUND_SERVICE) == 0) { 66 return false; 67 } 68 69 // Entry has triggered a HUN or some other interruption, therefore it has been seen and the 70 // interrupter might be retaining it anyway. 71 if (entry.hasInterrupted()) { 72 return false; 73 } 74 75 boolean hasInteracted = mInteractionTracker.hasUserInteractedWith(entry.getKey()); 76 long aliveTime = mSystemClock.uptimeMillis() - entry.getCreationTime(); 77 return aliveTime < MIN_FGS_TIME_MS && !hasInteracted; 78 } 79 80 @Override shouldExtendLifetimeForPendingNotification( @onNull NotificationEntry entry)81 public boolean shouldExtendLifetimeForPendingNotification( 82 @NonNull NotificationEntry entry) { 83 return shouldExtendLifetime(entry); 84 } 85 86 @Override setShouldManageLifetime( @onNull NotificationEntry entry, boolean shouldManage)87 public void setShouldManageLifetime( 88 @NonNull NotificationEntry entry, boolean shouldManage) { 89 if (!shouldManage) { 90 mManagedEntries.remove(entry); 91 return; 92 } 93 94 mManagedEntries.add(entry); 95 96 Runnable r = () -> { 97 if (mManagedEntries.contains(entry)) { 98 mManagedEntries.remove(entry); 99 if (mNotificationSafeToRemoveCallback != null) { 100 mNotificationSafeToRemoveCallback.onSafeToRemove(entry.getKey()); 101 } 102 } 103 }; 104 long delayAmt = MIN_FGS_TIME_MS 105 - (mSystemClock.uptimeMillis() - entry.getCreationTime()); 106 mHandler.postDelayed(r, delayAmt); 107 } 108 } 109 110