Christoph Studer | cd4adf8 | 2014-08-19 17:50:49 +0200 | [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 | |
| 18 | import java.util.Comparator; |
| 19 | |
| 20 | /** |
| 21 | * Sorts notifications by their global sort key. |
| 22 | */ |
| 23 | public class GlobalSortKeyComparator implements Comparator<NotificationRecord> { |
| 24 | @Override |
| 25 | public int compare(NotificationRecord left, NotificationRecord right) { |
| 26 | if (left.getGlobalSortKey() == null) { |
| 27 | throw new IllegalStateException("Missing left global sort key: " + left); |
| 28 | } |
| 29 | if (right.getGlobalSortKey() == null) { |
| 30 | throw new IllegalStateException("Missing right global sort key: " + right); |
| 31 | } |
| 32 | return left.getGlobalSortKey().compareTo(right.getGlobalSortKey()); |
| 33 | } |
| 34 | } |