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/*
* 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.settings.datausage;
import static com.android.settingslib.RestrictedLockUtilsInternal.checkIfMeteredDataUsageUserControlDisabled;
import android.app.Application;
import android.app.settings.SettingsEnums;
import android.content.Context;
import android.os.UserHandle;
import androidx.annotation.VisibleForTesting;
import androidx.preference.Preference;
import androidx.preference.PreferenceScreen;
import com.android.settings.R;
import com.android.settings.applications.AppStateBaseBridge;
import com.android.settings.core.BasePreferenceController;
import com.android.settings.dashboard.DashboardFragment;
import com.android.settings.overlay.FeatureFactory;
import com.android.settingslib.applications.AppUtils;
import com.android.settingslib.applications.ApplicationsState;
import com.android.settingslib.applications.ApplicationsState.AppEntry;
import com.android.settingslib.applications.ApplicationsState.AppFilter;
import com.android.settingslib.core.lifecycle.Lifecycle;
import com.android.settingslib.core.lifecycle.LifecycleObserver;
import com.android.settingslib.core.lifecycle.events.OnDestroy;
import com.android.settingslib.core.lifecycle.events.OnStart;
import com.android.settingslib.core.lifecycle.events.OnStop;
import java.util.ArrayList;
import java.util.Set;
import java.util.TreeSet;
public class UnrestrictedDataAccessPreferenceController extends BasePreferenceController implements
LifecycleObserver, OnStart, OnStop, OnDestroy, ApplicationsState.Callbacks,
AppStateBaseBridge.Callback, Preference.OnPreferenceChangeListener {
private final ApplicationsState mApplicationsState;
private final AppStateDataUsageBridge mDataUsageBridge;
private final DataSaverBackend mDataSaverBackend;
private ApplicationsState.Session mSession;
private AppFilter mFilter;
private DashboardFragment mParentFragment;
private PreferenceScreen mScreen;
private boolean mExtraLoaded;
public UnrestrictedDataAccessPreferenceController(Context context, String key) {
super(context, key);
mApplicationsState = ApplicationsState.getInstance(
(Application) context.getApplicationContext());
mDataSaverBackend = new DataSaverBackend(context);
mDataUsageBridge = new AppStateDataUsageBridge(mApplicationsState, this, mDataSaverBackend);
}
public void setFilter(AppFilter filter) {
mFilter = filter;
}
public void setParentFragment(DashboardFragment parentFragment) {
mParentFragment = parentFragment;
}
public void setSession(Lifecycle lifecycle) {
mSession = mApplicationsState.newSession(this, lifecycle);
}
@Override
public void displayPreference(PreferenceScreen screen) {
super.displayPreference(screen);
mScreen = screen;
}
@Override
public int getAvailabilityStatus() {
return mContext.getResources().getBoolean(R.bool.config_show_data_saver)
? AVAILABLE_UNSEARCHABLE
: UNSUPPORTED_ON_DEVICE;
}
@Override
public void onStart() {
mDataUsageBridge.resume(true /* forceLoadAllApps */);
}
@Override
public void onStop() {
mDataUsageBridge.pause();
}
@Override
public void onDestroy() {
mDataUsageBridge.release();
}
@Override
public void onExtraInfoUpdated() {
mExtraLoaded = true;
rebuild();
}
@Override
public void onRunningStateChanged(boolean running) {
}
@Override
public void onPackageListChanged() {
}
@Override
public void onRebuildComplete(ArrayList<AppEntry> apps) {
if (apps == null) {
return;
}
// Preload top visible icons of app list.
AppUtils.preloadTopIcons(mContext, apps,
mContext.getResources().getInteger(R.integer.config_num_visible_app_icons));
// Create apps key set for removing useless preferences
final Set<String> appsKeySet = new TreeSet<>();
// Add or update preferences
final int N = apps.size();
for (int i = 0; i < N; i++) {
final AppEntry entry = apps.get(i);
if (!shouldAddPreference(entry)) {
continue;
}
final String prefkey = UnrestrictedDataAccessPreference.generateKey(entry);
appsKeySet.add(prefkey);
UnrestrictedDataAccessPreference preference =
(UnrestrictedDataAccessPreference) mScreen.findPreference(prefkey);
if (preference == null) {
preference = new UnrestrictedDataAccessPreference(mScreen.getContext(), entry,
mApplicationsState, mDataSaverBackend, mParentFragment);
preference.setOnPreferenceChangeListener(this);
mScreen.addPreference(preference);
} else {
preference.setDisabledByAdmin(checkIfMeteredDataUsageUserControlDisabled(mContext,
entry.info.packageName, UserHandle.getUserId(entry.info.uid)));
preference.checkEcmRestrictionAndSetDisabled(entry.info.packageName);
preference.updateState();
}
preference.setOrder(i);
}
// Remove useless preferences
removeUselessPrefs(appsKeySet);
}
@Override
public void onPackageIconChanged() {
}
@Override
public void onPackageSizeChanged(String packageName) {
}
@Override
public void onAllSizesComputed() {
}
@Override
public void onLauncherInfoChanged() {
}
@Override
public void onLoadEntriesCompleted() {
}
@Override
public boolean onPreferenceChange(Preference preference, Object newValue) {
if (preference instanceof UnrestrictedDataAccessPreference) {
final UnrestrictedDataAccessPreference
accessPreference = (UnrestrictedDataAccessPreference) preference;
boolean allowlisted = newValue == Boolean.TRUE;
logSpecialPermissionChange(allowlisted, accessPreference.getEntry().info.packageName);
mDataSaverBackend.setIsAllowlisted(accessPreference.getEntry().info.uid,
accessPreference.getEntry().info.packageName, allowlisted);
if (accessPreference.getDataUsageState() != null) {
accessPreference.getDataUsageState().isDataSaverAllowlisted = allowlisted;
}
return true;
}
return false;
}
public void rebuild() {
if (!mExtraLoaded) {
return;
}
final ArrayList<AppEntry> apps = mSession.rebuild(mFilter,
ApplicationsState.ALPHA_COMPARATOR);
if (apps != null) {
onRebuildComplete(apps);
}
}
private void removeUselessPrefs(final Set<String> appsKeySet) {
final int prefCount = mScreen.getPreferenceCount();
String prefKey;
if (prefCount > 0) {
for (int i = prefCount - 1; i >= 0; i--) {
Preference pref = mScreen.getPreference(i);
prefKey = pref.getKey();
if (!appsKeySet.isEmpty() && appsKeySet.contains(prefKey)) {
continue;
}
mScreen.removePreference(pref);
}
}
}
@VisibleForTesting
void logSpecialPermissionChange(boolean allowlisted, String packageName) {
final int logCategory = allowlisted ? SettingsEnums.APP_SPECIAL_PERMISSION_UNL_DATA_ALLOW
: SettingsEnums.APP_SPECIAL_PERMISSION_UNL_DATA_DENY;
FeatureFactory.getFeatureFactory().getMetricsFeatureProvider().action(mContext,
logCategory, packageName);
}
@VisibleForTesting
static boolean shouldAddPreference(AppEntry app) {
return app != null && UserHandle.isApp(app.info.uid);
}
}