| /* |
| * Copyright (C) 2021 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.car.settings.datausage; |
| |
| import android.content.Context; |
| import android.net.NetworkTemplate; |
| import android.os.Bundle; |
| |
| import androidx.annotation.NonNull; |
| import androidx.annotation.VisibleForTesting; |
| import androidx.loader.app.LoaderManager; |
| import androidx.loader.content.Loader; |
| |
| import com.android.settingslib.net.NetworkCycleChartData; |
| import com.android.settingslib.net.NetworkCycleChartDataLoader; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| /** |
| * Class to manage the callbacks needed to calculate data usage cycles. |
| */ |
| public class DataUsageCycleManager { |
| |
| /** |
| * Callback for when NetworkDataCycles is loaded. |
| */ |
| public interface DataUsageCycleLoaderCallback { |
| /** |
| * Called when the data is successfully loaded from |
| * {@link DataUsageCycleManager.NetworkDataCyclesResult}. |
| */ |
| void onDataLoaded(List<NetworkCycleChartData> networkCycleChartData); |
| } |
| |
| @VisibleForTesting |
| static final int NETWORK_CYCLE_LOADER_ID = 11; |
| |
| private final Context mContext; |
| private final NetworkTemplate mNetworkTemplate; |
| private final List<DataUsageCycleManager.DataUsageCycleLoaderCallback> mListeners = |
| new ArrayList<>(); |
| |
| DataUsageCycleManager(Context context, NetworkTemplate networkTemplate) { |
| mContext = context; |
| mNetworkTemplate = networkTemplate; |
| } |
| |
| /** |
| * Registers a listener that will be notified once the data is loaded. |
| */ |
| public void registerListener(DataUsageCycleManager.DataUsageCycleLoaderCallback listener) { |
| if (!mListeners.contains(listener)) { |
| mListeners.add(listener); |
| } |
| } |
| |
| /** |
| * Unregisters the listener. |
| */ |
| public void unregisterListener(DataUsageCycleManager.DataUsageCycleLoaderCallback listener) { |
| mListeners.remove(listener); |
| } |
| |
| /** |
| * Start calculating the storage stats. |
| */ |
| public void startLoading(LoaderManager loaderManager) { |
| loaderManager.restartLoader(NETWORK_CYCLE_LOADER_ID, null, new NetworkDataCyclesResult()); |
| } |
| |
| private void onReceive(List<NetworkCycleChartData> networkCycleDataLoaderList) { |
| for (DataUsageCycleManager.DataUsageCycleLoaderCallback listener : mListeners) { |
| listener.onDataLoaded(networkCycleDataLoaderList); |
| } |
| } |
| |
| /** |
| * Callback to calculate network data cycles. |
| */ |
| private class NetworkDataCyclesResult implements LoaderManager.LoaderCallbacks |
| <List<NetworkCycleChartData>> { |
| @Override |
| public Loader<List<NetworkCycleChartData>> onCreateLoader(int id, Bundle args) { |
| return NetworkCycleChartDataLoader.builder(mContext) |
| .setNetworkTemplate(mNetworkTemplate) |
| .build(); |
| } |
| |
| @Override |
| public void onLoadFinished(@NonNull Loader<List<NetworkCycleChartData>> loader, |
| List<NetworkCycleChartData> networkCycleDataLoaderList) { |
| onReceive(networkCycleDataLoaderList); |
| } |
| |
| @Override |
| public void onLoaderReset(Loader<List<NetworkCycleChartData>> loader) {} |
| } |
| } |