1 /*
2  * Copyright (C) 2024 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 
18 import java.util.Comparator;
19 
20 /**
21  * Sorts notifications by stabilised recency.
22  */
23 public class NotificationTimeComparator implements Comparator<NotificationRecord> {
24     /**
25      * Sorts by time, with some stability being applied to updates
26      *
27      * Time stability logic lives in NotificationRecord.
28      */
29     @Override
compare(NotificationRecord left, NotificationRecord right)30     public int compare(NotificationRecord left, NotificationRecord right) {
31         // earliest first
32         return -1 * Long.compare(left.getRankingTimeMs(), right.getRankingTimeMs());
33     }
34 }
35