1 /* 2 * Copyright (C) 2015 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.launcher3.allapps; 17 18 import android.content.Context; 19 import android.os.Process; 20 import android.os.UserHandle; 21 import android.text.TextUtils; 22 23 import com.android.launcher3.model.data.AppInfo; 24 import com.android.launcher3.pm.UserCache; 25 import com.android.launcher3.util.LabelComparator; 26 27 import java.util.Comparator; 28 29 /** 30 * A comparator to arrange items based on user profiles. 31 */ 32 public class AppInfoComparator implements Comparator<AppInfo> { 33 34 private final UserCache mUserManager; 35 private final UserHandle mMyUser; 36 private final LabelComparator mLabelComparator; 37 AppInfoComparator(Context context)38 public AppInfoComparator(Context context) { 39 mUserManager = UserCache.INSTANCE.get(context); 40 mMyUser = Process.myUserHandle(); 41 mLabelComparator = new LabelComparator(); 42 } 43 44 @Override compare(AppInfo a, AppInfo b)45 public int compare(AppInfo a, AppInfo b) { 46 // Order by the title in the current locale 47 int result = mLabelComparator.compare(getSortingTitle(a), getSortingTitle(b)); 48 if (result != 0) { 49 return result; 50 } 51 52 // If labels are same, compare component names 53 result = a.componentName.compareTo(b.componentName); 54 if (result != 0) { 55 return result; 56 } 57 58 if (mMyUser.equals(a.user)) { 59 return -1; 60 } else { 61 Long aUserSerial = mUserManager.getSerialNumberForUser(a.user); 62 Long bUserSerial = mUserManager.getSerialNumberForUser(b.user); 63 return aUserSerial.compareTo(bUserSerial); 64 } 65 } 66 getSortingTitle(AppInfo info)67 private String getSortingTitle(AppInfo info) { 68 if (!TextUtils.isEmpty(info.appTitle)) { 69 return info.appTitle.toString(); 70 } 71 if (info.title != null) { 72 return info.title.toString(); 73 } 74 return ""; 75 } 76 } 77