1 /* 2 * Copyright (C) 2021 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.settings.applications; 18 19 import android.app.usage.UsageStats; 20 import android.car.drivingstate.CarUxRestrictions; 21 import android.content.Context; 22 23 import androidx.preference.Preference; 24 25 import com.android.car.settings.R; 26 import com.android.car.settings.common.FragmentController; 27 import com.android.car.settings.common.PreferenceController; 28 29 import java.util.List; 30 31 /** 32 * Controller that shows when there is no recently used apps. 33 * Sets availability based on if there are recent apps and sets summary depending on number of 34 * non-system apps. 35 */ 36 public class AllAppsPreferenceController extends PreferenceController<Preference> implements 37 RecentAppsItemManager.RecentAppStatsListener, 38 InstalledAppCountItemManager.InstalledAppCountListener { 39 40 // In most cases, device has recently opened apps. So, assume true by default. 41 private boolean mAreThereRecentlyUsedApps = true; 42 AllAppsPreferenceController(Context context, String preferenceKey, FragmentController fragmentController, CarUxRestrictions uxRestrictions)43 public AllAppsPreferenceController(Context context, String preferenceKey, 44 FragmentController fragmentController, CarUxRestrictions uxRestrictions) { 45 super(context, preferenceKey, fragmentController, uxRestrictions); 46 } 47 48 @Override getPreferenceType()49 protected Class<Preference> getPreferenceType() { 50 return Preference.class; 51 } 52 53 @Override getAvailabilityStatus()54 public int getAvailabilityStatus() { 55 return mAreThereRecentlyUsedApps ? CONDITIONALLY_UNAVAILABLE : AVAILABLE; 56 } 57 58 @Override onRecentAppStatsLoaded(List<UsageStats> recentAppStats)59 public void onRecentAppStatsLoaded(List<UsageStats> recentAppStats) { 60 mAreThereRecentlyUsedApps = !recentAppStats.isEmpty(); 61 refreshUi(); 62 } 63 64 @Override onInstalledAppCountLoaded(int appCount)65 public void onInstalledAppCountLoaded(int appCount) { 66 getPreference().setSummary(getContext().getResources().getString( 67 R.string.apps_view_all_apps_title, appCount)); 68 } 69 } 70