NotificationComparator.java revision 54bbef435ed857fc68941672799fc8001c101119
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 */ 16package com.android.server.notification; 17 18import java.util.Comparator; 19 20/** 21 * Sorts notificaitons into attention-relelvant order. 22 */ 23public class NotificationComparator 24 implements Comparator<NotificationRecord> { 25 26 @Override 27 public int compare(NotificationRecord lhs, NotificationRecord rhs) { 28 if (lhs.isRecentlyIntrusive() != rhs.isRecentlyIntrusive()) { 29 return lhs.isRecentlyIntrusive() ? -1 : 1; 30 } 31 final int leftPackagePriority = lhs.getPackagePriority(); 32 final int rightPackagePriority = rhs.getPackagePriority(); 33 if (leftPackagePriority != rightPackagePriority) { 34 // by priority, high to low 35 return -1 * Integer.compare(leftPackagePriority, rightPackagePriority); 36 } 37 final int leftScore = lhs.sbn.getScore(); 38 final int rightScore = rhs.sbn.getScore(); 39 if (leftScore != rightScore) { 40 // by priority, high to low 41 return -1 * Integer.compare(leftScore, rightScore); 42 } 43 final float leftPeple = lhs.getContactAffinity(); 44 final float rightPeople = rhs.getContactAffinity(); 45 if (leftPeple != rightPeople) { 46 // by contact proximity, close to far 47 return -1 * Float.compare(leftPeple, rightPeople); 48 } 49 // then break ties by time, most recent first 50 return -1 * Long.compare(lhs.getRankingTimeMs(), rhs.getRankingTimeMs()); 51 } 52} 53