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 
18 import android.util.Slog;
19 
20 import java.util.Comparator;
21 
22 /**
23  * Sorts notifications by their global sort key.
24  */
25 public class GlobalSortKeyComparator implements Comparator<NotificationRecord> {
26     private final static String TAG = "GlobalSortComp";
27 
28     @Override
compare(NotificationRecord left, NotificationRecord right)29     public int compare(NotificationRecord left, NotificationRecord right) {
30         if (left.getGlobalSortKey() == null) {
31             Slog.wtf(TAG, "Missing left global sort key: " + left);
32             return 1;
33         }
34         if (right.getGlobalSortKey() == null) {
35             Slog.wtf(TAG, "Missing right global sort key: " + right);
36             return  -1;
37         }
38         return left.getGlobalSortKey().compareTo(right.getGlobalSortKey());
39     }
40 }
41