1 /* 2 * Copyright (C) 2018 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 17 package com.android.car.carlauncher; 18 19 import com.android.car.carlauncher.LauncherItemProto.LauncherItemListMessage; 20 import com.android.car.carlauncher.LauncherItemProto.LauncherItemMessage; 21 22 import java.util.ArrayList; 23 import java.util.Collections; 24 import java.util.Comparator; 25 import java.util.List; 26 27 /** 28 * Helper class that provides method used by LauncherModel 29 */ 30 public class LauncherItemHelper { 31 private static final String TAG = "LauncherItemHelper"; 32 33 /** 34 * This method is used to convert a list of launcher items into protobuf class 35 */ launcherList2Msg(List<LauncherItem> launcherItemList)36 public LauncherItemListMessage launcherList2Msg(List<LauncherItem> launcherItemList) { 37 List<LauncherItemMessage> msgList = new ArrayList<LauncherItemMessage>(); 38 if (launcherItemList == null) { 39 return null; 40 } else { 41 for (int i = 0; i < launcherItemList.size(); i++) { 42 msgList.add(launcherItemList.get(i).launcherItem2Msg(i, -1)); 43 } 44 } 45 LauncherItemListMessage.Builder builder = 46 LauncherItemListMessage.newBuilder().addAllLauncherItemMessage(msgList); 47 return builder.build(); 48 } 49 50 /** 51 * This method converts sort the LauncherItemList based on their 52 * relative order in the proto file 53 */ sortLauncherItemListMsg( LauncherItemListMessage launcherItemListMsg)54 public List<LauncherItemMessage> sortLauncherItemListMsg( 55 LauncherItemListMessage launcherItemListMsg) { 56 List<LauncherItemMessage> itemListMsg = launcherItemListMsg.getLauncherItemMessageList(); 57 List<LauncherItemMessage> items = new ArrayList<>(); 58 if (!itemListMsg.isEmpty() && itemListMsg.size() > 0) { 59 //Need to create a new list for sorting purposes since ProtobufArrayList is not mutable 60 items.addAll(itemListMsg); 61 Collections.sort(items, 62 Comparator.comparingInt(LauncherItemMessage::getRelativePosition)); 63 } 64 return items; 65 } 66 } 67 68