content: /*
   * Copyright (C) 2018 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 android.os.UserHandle;
  
  import com.android.launcher3.icons.ComponentWithLabel;
  import com.android.launcher3.LauncherAppState;
  import com.android.launcher3.util.PackageUserKey;
  import com.android.launcher3.widget.WidgetListRowEntry;
  
  import java.util.ArrayList;
  import java.util.Collections;
  import java.util.List;
  import java.util.Set;
  
  import androidx.annotation.Nullable;
  
  /**
   * Widgets data model that is used by the adapters of the widget views and controllers.
   *
   * <p> The widgets and shortcuts are organized using package name as its index.
   */
  public class WidgetsModel {
      private static final ArrayList<WidgetListRowEntry> EMPTY_WIDGET_LIST = new ArrayList<>();
  
      /**
       * Returns a list of {@link WidgetListRowEntry}. All {@link WidgetItem} in a single row
       * are sorted (based on label and user), but the overall list of {@link WidgetListRowEntry}s
       * is not sorted. This list is sorted at the UI when using
       * {@link com.android.launcher3.widget.WidgetsDiffReporter}
       *
       * @see com.android.launcher3.widget.WidgetsListAdapter#setWidgets(ArrayList)
       */
      public synchronized ArrayList<WidgetListRowEntry> getWidgetsList(Context context) {
          return EMPTY_WIDGET_LIST;
      }
  
      /**
       * @param packageUser If null, all widgets and shortcuts are updated and returned, otherwise
       *                    only widgets and shortcuts associated with the package/user are.
       */
      public List<ComponentWithLabel> update(LauncherAppState app,
              @Nullable PackageUserKey packageUser) {
          return Collections.emptyList();
      }
  
  
      public void onPackageIconsUpdated(Set<String> packageNames, UserHandle user,
              LauncherAppState app) {
      }
  }