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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.development;
import static android.os.UserHandle.USER_SYSTEM;
import android.content.Context;
import android.content.om.IOverlayManager;
import android.content.om.OverlayInfo;
import android.content.pm.PackageManager;
import android.os.AsyncTask;
import android.os.RemoteException;
import android.os.ServiceManager;
import android.text.TextUtils;
import android.util.Log;
import android.widget.Toast;
import androidx.annotation.VisibleForTesting;
import androidx.preference.ListPreference;
import androidx.preference.Preference;
import androidx.preference.PreferenceScreen;
import com.android.settings.R;
import com.android.settings.core.PreferenceControllerMixin;
import com.android.settingslib.development.DeveloperOptionsPreferenceController;
import java.util.ArrayList;
import java.util.Comparator;
import java.util.List;
/**
* Preference controller to allow users to choose an overlay from a list for a given category.
* The chosen overlay is enabled exclusively within its category. A default option is also
* exposed that disables all overlays in the given category.
*/
public class OverlayCategoryPreferenceController extends DeveloperOptionsPreferenceController
implements Preference.OnPreferenceChangeListener, PreferenceControllerMixin {
private static final String TAG = "OverlayCategoryPC";
@VisibleForTesting
static final String PACKAGE_DEVICE_DEFAULT = "package_device_default";
private static final String OVERLAY_TARGET_PACKAGE = "android";
private static final Comparator<OverlayInfo> OVERLAY_INFO_COMPARATOR =
Comparator.comparingInt(a -> a.priority);
private final IOverlayManager mOverlayManager;
private final boolean mAvailable;
private final String mCategory;
private final PackageManager mPackageManager;
private ListPreference mPreference;
@VisibleForTesting
OverlayCategoryPreferenceController(Context context, PackageManager packageManager,
IOverlayManager overlayManager, String category) {
super(context);
mOverlayManager = overlayManager;
mPackageManager = packageManager;
mCategory = category;
mAvailable = overlayManager != null && !getOverlayInfos().isEmpty();
}
public OverlayCategoryPreferenceController(Context context, String category) {
this(context, context.getPackageManager(), IOverlayManager.Stub
.asInterface(ServiceManager.getService(Context.OVERLAY_SERVICE)), category);
}
@Override
public boolean isAvailable() {
return mAvailable;
}
@Override
public String getPreferenceKey() {
return mCategory;
}
@Override
public void displayPreference(PreferenceScreen screen) {
super.displayPreference(screen);
setPreference(screen.findPreference(getPreferenceKey()));
}
@VisibleForTesting
void setPreference(ListPreference preference) {
mPreference = preference;
}
@Override
public boolean onPreferenceChange(Preference preference, Object newValue) {
return setOverlay((String) newValue);
}
private boolean setOverlay(String packageName) {
final String currentPackageName = getOverlayInfos().stream()
.filter(info -> info.isEnabled())
.map(info -> info.packageName)
.findFirst()
.orElse(null);
if (PACKAGE_DEVICE_DEFAULT.equals(packageName) && TextUtils.isEmpty(currentPackageName)
|| TextUtils.equals(packageName, currentPackageName)) {
// Already set.
return true;
}
new AsyncTask<Void, Void, Boolean>() {
@Override
protected Boolean doInBackground(Void... params) {
try {
if (PACKAGE_DEVICE_DEFAULT.equals(packageName)) {
return mOverlayManager.setEnabled(currentPackageName, false, USER_SYSTEM);
} else {
return mOverlayManager.setEnabledExclusiveInCategory(packageName,
USER_SYSTEM);
}
} catch (SecurityException | IllegalStateException | RemoteException e) {
Log.w(TAG, "Error enabling overlay.", e);
return false;
}
}
@Override
protected void onPostExecute(Boolean success) {
updateState(mPreference);
if (!success) {
Toast.makeText(
mContext, R.string.overlay_toast_failed_to_apply, Toast.LENGTH_LONG)
.show();
}
}
}.execute();
return true; // Assume success; toast on failure.
}
@Override
public void updateState(Preference preference) {
final List<String> pkgs = new ArrayList<>();
final List<String> labels = new ArrayList<>();
String selectedPkg = PACKAGE_DEVICE_DEFAULT;
String selectedLabel = mContext.getString(R.string.overlay_option_device_default);
// Add the default package / label before all of the overlays
pkgs.add(selectedPkg);
labels.add(selectedLabel);
for (OverlayInfo overlayInfo : getOverlayInfos()) {
pkgs.add(overlayInfo.packageName);
try {
labels.add(mPackageManager.getApplicationInfo(overlayInfo.packageName, 0)
.loadLabel(mPackageManager).toString());
} catch (PackageManager.NameNotFoundException e) {
labels.add(overlayInfo.packageName);
}
if (overlayInfo.isEnabled()) {
selectedPkg = pkgs.get(pkgs.size() - 1);
selectedLabel = labels.get(labels.size() - 1);
}
}
mPreference.setEntries(labels.toArray(new String[labels.size()]));
mPreference.setEntryValues(pkgs.toArray(new String[pkgs.size()]));
mPreference.setValue(selectedPkg);
mPreference.setSummary(selectedLabel);
}
private List<OverlayInfo> getOverlayInfos() {
final List<OverlayInfo> filteredInfos = new ArrayList<>();
try {
List<OverlayInfo> overlayInfos = mOverlayManager
.getOverlayInfosForTarget(OVERLAY_TARGET_PACKAGE, USER_SYSTEM);
for (OverlayInfo overlayInfo : overlayInfos) {
if (mCategory.equals(overlayInfo.category)) {
filteredInfos.add(overlayInfo);
}
}
} catch (RemoteException re) {
throw re.rethrowFromSystemServer();
}
filteredInfos.sort(OVERLAY_INFO_COMPARATOR);
return filteredInfos;
}
@Override
protected void onDeveloperOptionsSwitchDisabled() {
super.onDeveloperOptionsSwitchDisabled();
// TODO b/133222035: remove these developer settings when the
// Settings.Secure.THEME_CUSTOMIZATION_OVERLAY_PACKAGES setting is used
setOverlay(PACKAGE_DEVICE_DEFAULT);
updateState(mPreference);
}
}
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