| /* |
| * Copyright (C) 2015 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package com.android.launcher3.model; |
| |
| import android.content.Context; |
| |
| import com.android.launcher3.ItemInfo; |
| import com.android.launcher3.compat.UserHandleCompat; |
| import com.android.launcher3.compat.UserManagerCompat; |
| |
| import java.util.Comparator; |
| |
| /** |
| * A comparator to arrange items based on user profiles. |
| */ |
| public abstract class AbstractUserComparator<T extends ItemInfo> implements Comparator<T> { |
| |
| private final UserManagerCompat mUserManager; |
| private final UserHandleCompat mMyUser; |
| |
| public AbstractUserComparator(Context context) { |
| mUserManager = UserManagerCompat.getInstance(context); |
| mMyUser = UserHandleCompat.myUserHandle(); |
| } |
| |
| @Override |
| public int compare(T lhs, T rhs) { |
| if (mMyUser.equals(lhs.user)) { |
| return -1; |
| } else { |
| Long aUserSerial = mUserManager.getSerialNumberForUser(lhs.user); |
| Long bUserSerial = mUserManager.getSerialNumberForUser(rhs.user); |
| return aUserSerial.compareTo(bUserSerial); |
| } |
| } |
| } |