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.launcher3.model; 18 19 import android.content.Context; 20 import android.os.UserHandle; 21 22 import com.android.launcher3.icons.ComponentWithLabel; 23 import com.android.launcher3.LauncherAppState; 24 import com.android.launcher3.util.PackageUserKey; 25 import com.android.launcher3.widget.WidgetListRowEntry; 26 27 import java.util.ArrayList; 28 import java.util.Collections; 29 import java.util.List; 30 import java.util.Set; 31 32 import androidx.annotation.Nullable; 33 34 /** 35 * Widgets data model that is used by the adapters of the widget views and controllers. 36 * 37 * <p> The widgets and shortcuts are organized using package name as its index. 38 */ 39 public class WidgetsModel { 40 private static final ArrayList<WidgetListRowEntry> EMPTY_WIDGET_LIST = new ArrayList<>(); 41 42 /** 43 * Returns a list of {@link WidgetListRowEntry}. All {@link WidgetItem} in a single row 44 * are sorted (based on label and user), but the overall list of {@link WidgetListRowEntry}s 45 * is not sorted. This list is sorted at the UI when using 46 * {@link com.android.launcher3.widget.WidgetsDiffReporter} 47 * 48 * @see com.android.launcher3.widget.WidgetsListAdapter#setWidgets(ArrayList) 49 */ getWidgetsList(Context context)50 public synchronized ArrayList<WidgetListRowEntry> getWidgetsList(Context context) { 51 return EMPTY_WIDGET_LIST; 52 } 53 54 /** 55 * @param packageUser If null, all widgets and shortcuts are updated and returned, otherwise 56 * only widgets and shortcuts associated with the package/user are. 57 */ update(LauncherAppState app, @Nullable PackageUserKey packageUser)58 public List<ComponentWithLabel> update(LauncherAppState app, 59 @Nullable PackageUserKey packageUser) { 60 return Collections.emptyList(); 61 } 62 63 onPackageIconsUpdated(Set<String> packageNames, UserHandle user, LauncherAppState app)64 public void onPackageIconsUpdated(Set<String> packageNames, UserHandle user, 65 LauncherAppState app) { 66 } 67 }