| /* |
| * Copyright (C) 2019 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.storage; |
| |
| import android.annotation.NonNull; |
| import android.annotation.Nullable; |
| import android.content.Context; |
| import android.content.pm.ApplicationInfo; |
| import android.os.Bundle; |
| import android.os.UserHandle; |
| |
| import androidx.loader.app.LoaderManager; |
| import androidx.loader.content.Loader; |
| |
| import com.android.settingslib.applications.StorageStatsSource; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| /** |
| * Class to manage the callbacks needed to calculate storage stats for an application. |
| */ |
| public class AppsStorageStatsManager { |
| |
| /** |
| * Callback that is called once the AppsStorageStats is loaded. |
| */ |
| public interface Callback { |
| /** |
| * Called when the data is successfully loaded from {@link AppsStorageStatsResult}. The |
| * result can be {@link null} if the package is removed during loading. Also notifies if |
| * this callback was initiated when cache or data is cleared or not. |
| */ |
| void onDataLoaded(StorageStatsSource.AppStorageStats data, boolean cacheCleared, |
| boolean dataCleared); |
| } |
| |
| private final Context mContext; |
| private ApplicationInfo mInfo; |
| private int mUserId; |
| private boolean mCacheCleared; |
| private boolean mDataCleared; |
| private List<Callback> mAppsStorageStatsListeners = new ArrayList<>(); |
| |
| AppsStorageStatsManager(Context context) { |
| mContext = context; |
| } |
| |
| /** |
| * Registers a listener that will be notified once the data is loaded. |
| */ |
| public void registerListener(Callback appsStorageStatsListener) { |
| if (!mAppsStorageStatsListeners.contains(appsStorageStatsListener)) { |
| mAppsStorageStatsListeners.add(appsStorageStatsListener); |
| } |
| } |
| |
| /** |
| * Unregisters the listener. |
| */ |
| public void unregisterListener(Callback appsStorageStatsListener) { |
| mAppsStorageStatsListeners.remove(appsStorageStatsListener); |
| } |
| |
| /** |
| * Start calculating the storage stats. |
| */ |
| public void startLoading(LoaderManager loaderManager, ApplicationInfo info, int userId, |
| boolean cacheCleared, boolean dataCleared) { |
| mInfo = info; |
| mUserId = userId; |
| mCacheCleared = cacheCleared; |
| mDataCleared = dataCleared; |
| loaderManager.restartLoader(/* id= */ 1, Bundle.EMPTY, new AppsStorageStatsResult()); |
| } |
| |
| private void onAppsStorageStatsLoaded(StorageStatsSource.AppStorageStats data) { |
| for (Callback listener : mAppsStorageStatsListeners) { |
| listener.onDataLoaded(data, mCacheCleared, mDataCleared); |
| } |
| } |
| |
| /** |
| * Callback to calculate applications storage stats. |
| */ |
| private class AppsStorageStatsResult implements |
| LoaderManager.LoaderCallbacks<StorageStatsSource.AppStorageStats> { |
| |
| @NonNull |
| @Override |
| public Loader<StorageStatsSource.AppStorageStats> onCreateLoader(int id, |
| @Nullable Bundle args) { |
| return new FetchPackageStorageAsyncLoader( |
| mContext, new StorageStatsSource(mContext), mInfo, UserHandle.of(mUserId)); |
| } |
| |
| @Override |
| public void onLoadFinished( |
| @NonNull Loader<StorageStatsSource.AppStorageStats> loader, |
| StorageStatsSource.AppStorageStats data) { |
| onAppsStorageStatsLoaded(data); |
| } |
| |
| @Override |
| public void onLoaderReset( |
| @NonNull Loader<StorageStatsSource.AppStorageStats> loader) { |
| } |
| } |
| } |