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/*
* Copyright (C) 2017 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License
*/
package com.android.dialer.notification;
import android.app.Notification;
import android.app.NotificationManager;
import android.content.Context;
import android.service.notification.StatusBarNotification;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v4.os.BuildCompat;
import android.text.TextUtils;
import android.util.Pair;
import com.android.dialer.common.Assert;
import com.android.dialer.common.LogUtil;
/**
* Wrapper around the notification manager APIs. The wrapper ensures that channels are set and that
* notifications are limited to 10 per group.
*/
public final class DialerNotificationManager {
public static void notify(@NonNull Context context, int id, @NonNull Notification notification) {
Assert.isNotNull(context);
Assert.isNotNull(notification);
throw Assert.createUnsupportedOperationFailException("all notifications must have tags");
}
public static void notify(
@NonNull Context context, @NonNull String tag, int id, @NonNull Notification notification) {
Assert.isNotNull(context);
Assert.isNotNull(notification);
Assert.checkArgument(!TextUtils.isEmpty(tag));
if (BuildCompat.isAtLeastO()) {
Assert.checkArgument(!TextUtils.isEmpty(notification.getChannelId()));
}
getNotificationManager(context).notify(tag, id, notification);
NotificationThrottler.throttle(context, notification);
}
public static void cancel(@NonNull Context context, int id) {
Assert.isNotNull(context);
throw Assert.createUnsupportedOperationFailException(
"notification IDs are not unique across the app, a tag must be specified");
}
public static void cancel(@NonNull Context context, @NonNull String tag, int id) {
Assert.isNotNull(context);
Assert.checkArgument(!TextUtils.isEmpty(tag));
NotificationManager notificationManager = getNotificationManager(context);
StatusBarNotification[] notifications = notificationManager.getActiveNotifications();
String groupKey = findGroupKey(notifications, tag, id);
if (!TextUtils.isEmpty(groupKey)) {
Pair<StatusBarNotification, Integer> groupSummaryAndCount =
getGroupSummaryAndCount(notifications, groupKey);
if (groupSummaryAndCount.first != null && groupSummaryAndCount.second <= 1) {
LogUtil.i(
"DialerNotificationManager.cancel",
"last notification in group (%s) removed, also removing group summary",
groupKey);
notificationManager.cancel(
groupSummaryAndCount.first.getTag(), groupSummaryAndCount.first.getId());
}
}
notificationManager.cancel(tag, id);
}
public static void cancelAll(Context context, String prefix) {
NotificationManager notificationManager = getNotificationManager(context);
StatusBarNotification[] notifications = notificationManager.getActiveNotifications();
for (StatusBarNotification notification : notifications) {
if (notification.getTag() != null && notification.getTag().startsWith(prefix)) {
notificationManager.cancel(notification.getTag(), notification.getId());
}
}
}
public static StatusBarNotification[] getActiveNotifications(@NonNull Context context) {
Assert.isNotNull(context);
return getNotificationManager(context).getActiveNotifications();
}
@Nullable
private static String findGroupKey(
@NonNull StatusBarNotification[] notifications, @NonNull String tag, int id) {
for (StatusBarNotification notification : notifications) {
if (TextUtils.equals(tag, notification.getTag()) && id == notification.getId()) {
return notification.getNotification().getGroup();
}
}
return null;
}
@NonNull
private static Pair<StatusBarNotification, Integer> getGroupSummaryAndCount(
@NonNull StatusBarNotification[] notifications, @NonNull String groupKey) {
StatusBarNotification groupSummaryNotification = null;
int groupCount = 0;
for (StatusBarNotification notification : notifications) {
if (TextUtils.equals(groupKey, notification.getNotification().getGroup())) {
if ((notification.getNotification().flags & Notification.FLAG_GROUP_SUMMARY) != 0) {
groupSummaryNotification = notification;
} else {
groupCount++;
}
}
}
return new Pair<>(groupSummaryNotification, groupCount);
}
@NonNull
private static NotificationManager getNotificationManager(@NonNull Context context) {
return context.getSystemService(NotificationManager.class);
}
private DialerNotificationManager() {}
}
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