/*
* Copyright (C) 2015 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.notification;
import android.annotation.Nullable;
import android.app.AlertDialog;
import android.app.Dialog;
import android.app.DialogFragment;
import android.app.NotificationManager;
import android.content.ComponentName;
import android.content.Context;
import android.content.DialogInterface;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageItemInfo;
import android.content.pm.PackageManager;
import android.database.ContentObserver;
import android.net.Uri;
import android.os.AsyncTask;
import android.os.Bundle;
import android.os.Handler;
import android.os.Looper;
import android.provider.Settings;
import android.provider.Settings.Secure;
import android.support.v14.preference.SwitchPreference;
import android.support.v7.preference.Preference;
import android.support.v7.preference.Preference.OnPreferenceChangeListener;
import android.support.v7.preference.PreferenceScreen;
import android.text.TextUtils;
import android.util.ArraySet;
import android.view.View;
import android.widget.Toast;
import com.android.internal.logging.MetricsProto.MetricsEvent;
import com.android.settings.R;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
public class ZenAccessSettings extends EmptyTextSettings {
private final SettingObserver mObserver = new SettingObserver();
private static final String ENABLED_SERVICES_SEPARATOR = ":";
private Context mContext;
private PackageManager mPkgMan;
private NotificationManager mNoMan;
@Override
protected int getMetricsCategory() {
return MetricsEvent.NOTIFICATION_ZEN_MODE_ACCESS;
}
@Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
mContext = getActivity();
mPkgMan = mContext.getPackageManager();
mNoMan = mContext.getSystemService(NotificationManager.class);
setPreferenceScreen(getPreferenceManager().createPreferenceScreen(mContext));
}
@Override
public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
setEmptyText(R.string.zen_access_empty_text);
}
@Override
public void onResume() {
super.onResume();
reloadList();
getContentResolver().registerContentObserver(
Secure.getUriFor(Secure.ENABLED_NOTIFICATION_POLICY_ACCESS_PACKAGES), false,
mObserver);
getContentResolver().registerContentObserver(
Secure.getUriFor(Secure.ENABLED_NOTIFICATION_LISTENERS), false,
mObserver);
}
@Override
public void onPause() {
super.onPause();
getContentResolver().unregisterContentObserver(mObserver);
}
private void reloadList() {
final PreferenceScreen screen = getPreferenceScreen();
screen.removeAll();
final ArrayList<ApplicationInfo> apps = new ArrayList<>();
final ArraySet<String> requesting = mNoMan.getPackagesRequestingNotificationPolicyAccess();
if (!requesting.isEmpty()) {
final List<ApplicationInfo> installed = mPkgMan.getInstalledApplications(0);
if (installed != null) {
for (ApplicationInfo app : installed) {
if (requesting.contains(app.packageName)) {
apps.add(app);
}
}
}
}
ArraySet<String> autoApproved = getEnabledNotificationListeners();
requesting.addAll(autoApproved);
Collections.sort(apps, new PackageItemInfo.DisplayNameComparator(mPkgMan));
for (ApplicationInfo app : apps) {
final String pkg = app.packageName;
final CharSequence label = app.loadLabel(mPkgMan);
final SwitchPreference pref = new SwitchPreference(getPrefContext());
pref.setPersistent(false);
pref.setIcon(app.loadIcon(mPkgMan));
pref.setTitle(label);
pref.setChecked(hasAccess(pkg));
if (autoApproved.contains(pkg)) {
pref.setEnabled(false);
pref.setSummary(getString(R.string.zen_access_disabled_package_warning));
}
pref.setOnPreferenceChangeListener(new OnPreferenceChangeListener() {
@Override
public boolean onPreferenceChange(Preference preference, Object newValue) {
final boolean access = (Boolean) newValue;
if (access) {
new ScaryWarningDialogFragment()
.setPkgInfo(pkg, label)
.show(getFragmentManager(), "dialog");
} else {
new FriendlyWarningDialogFragment()
.setPkgInfo(pkg, label)
.show(getFragmentManager(), "dialog");
}
return false;
}
});
screen.addPreference(pref);
}
}
private ArraySet<String> getEnabledNotificationListeners() {
ArraySet<String> packages = new ArraySet<>();
String settingValue = Settings.Secure.getString(getContext().getContentResolver(),
Settings.Secure.ENABLED_NOTIFICATION_LISTENERS);
if (!TextUtils.isEmpty(settingValue)) {
String[] restored = settingValue.split(ENABLED_SERVICES_SEPARATOR);
for (int i = 0; i < restored.length; i++) {
ComponentName value = ComponentName.unflattenFromString(restored[i]);
if (null != value) {
packages.add(value.getPackageName());
}
}
}
return packages;
}
private boolean hasAccess(String pkg) {
return mNoMan.isNotificationPolicyAccessGrantedForPackage(pkg);
}
private static void setAccess(final Context context, final String pkg, final boolean access) {
AsyncTask.execute(new Runnable() {
@Override
public void run() {
final NotificationManager mgr = context.getSystemService(NotificationManager.class);
mgr.setNotificationPolicyAccessGranted(pkg, access);
}
});
}
private static void deleteRules(final Context context, final String pkg) {
AsyncTask.execute(new Runnable() {
@Override
public void run() {
final NotificationManager mgr = context.getSystemService(NotificationManager.class);
mgr.removeAutomaticZenRules(pkg);
}
});
}
private final class SettingObserver extends ContentObserver {
public SettingObserver() {
super(new Handler(Looper.getMainLooper()));
}
@Override
public void onChange(boolean selfChange, Uri uri) {
reloadList();
}
}
/**
* Warning dialog when allowing zen access warning about the privileges being granted.
*/
public static class ScaryWarningDialogFragment extends DialogFragment {
static final String KEY_PKG = "p";
static final String KEY_LABEL = "l";
public ScaryWarningDialogFragment setPkgInfo(String pkg, CharSequence label) {
Bundle args = new Bundle();
args.putString(KEY_PKG, pkg);
args.putString(KEY_LABEL, TextUtils.isEmpty(label) ? pkg : label.toString());
setArguments(args);
return this;
}
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
final Bundle args = getArguments();
final String pkg = args.getString(KEY_PKG);
final String label = args.getString(KEY_LABEL);
final String title = getResources().getString(R.string.zen_access_warning_dialog_title,
label);
final String summary = getResources()
.getString(R.string.zen_access_warning_dialog_summary);
return new AlertDialog.Builder(getContext())
.setMessage(summary)
.setTitle(title)
.setCancelable(true)
.setPositiveButton(R.string.allow,
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
setAccess(getContext(), pkg, true);
}
})
.setNegativeButton(R.string.deny,
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
// pass
}
})
.create();
}
}
/**
* Warning dialog when revoking zen access warning that zen rule instances will be deleted.
*/
public static class FriendlyWarningDialogFragment extends DialogFragment {
static final String KEY_PKG = "p";
static final String KEY_LABEL = "l";
public FriendlyWarningDialogFragment setPkgInfo(String pkg, CharSequence label) {
Bundle args = new Bundle();
args.putString(KEY_PKG, pkg);
args.putString(KEY_LABEL, TextUtils.isEmpty(label) ? pkg : label.toString());
setArguments(args);
return this;
}
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
final Bundle args = getArguments();
final String pkg = args.getString(KEY_PKG);
final String label = args.getString(KEY_LABEL);
final String title = getResources().getString(
R.string.zen_access_revoke_warning_dialog_title, label);
final String summary = getResources()
.getString(R.string.zen_access_revoke_warning_dialog_summary);
return new AlertDialog.Builder(getContext())
.setMessage(summary)
.setTitle(title)
.setCancelable(true)
.setPositiveButton(R.string.okay,
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
deleteRules(getContext(), pkg);
setAccess(getContext(), pkg, false);
}
})
.setNegativeButton(R.string.cancel,
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
// pass
}
})
.create();
}
}
}