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/*
* 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.settings.notification;
import static android.app.admin.DevicePolicyManager.KEYGUARD_DISABLE_SECURE_NOTIFICATIONS;
import static android.app.admin.DevicePolicyManager.KEYGUARD_DISABLE_UNREDACTED_NOTIFICATIONS;
import static android.provider.Settings.Secure.LOCK_SCREEN_ALLOW_PRIVATE_NOTIFICATIONS;
import android.app.KeyguardManager;
import android.content.Context;
import android.database.ContentObserver;
import android.os.Handler;
import android.os.Looper;
import android.os.UserHandle;
import android.os.UserManager;
import android.provider.Settings;
import androidx.preference.PreferenceScreen;
import com.android.internal.widget.LockPatternUtils;
import com.android.settings.core.TogglePreferenceController;
import com.android.settings.overlay.FeatureFactory;
import com.android.settingslib.RestrictedLockUtils;
import com.android.settingslib.RestrictedLockUtilsInternal;
import com.android.settingslib.RestrictedSwitchPreference;
import com.android.settingslib.core.lifecycle.LifecycleObserver;
import com.android.settingslib.core.lifecycle.events.OnStart;
import com.android.settingslib.core.lifecycle.events.OnStop;
/**
* The controller of the sensitive notifications.
*/
public class RedactNotificationPreferenceController extends TogglePreferenceController implements
LifecycleObserver, OnStart, OnStop {
private static final String TAG = "LockScreenNotifPref";
static final String KEY_LOCKSCREEN_REDACT = "lock_screen_redact";
static final String KEY_LOCKSCREEN_WORK_PROFILE_REDACT = "lock_screen_work_redact";
private UserManager mUm;
private KeyguardManager mKm;
int mProfileUserId;
private RestrictedSwitchPreference mPreference;
private ContentObserver mContentObserver =
new ContentObserver(new Handler(Looper.getMainLooper())) {
@Override
public void onChange(boolean selfChange) {
if (mPreference != null) {
mPreference.setEnabled(
getAvailabilityStatus() != DISABLED_DEPENDENT_SETTING);
}
}
};
public RedactNotificationPreferenceController(Context context, String settingKey) {
super(context, settingKey);
mUm = context.getSystemService(UserManager.class);
mKm = context.getSystemService(KeyguardManager.class);
mProfileUserId = UserHandle.myUserId();
final int[] profileIds = mUm.getProfileIdsWithDisabled(UserHandle.myUserId());
for (int profileId : profileIds) {
if (profileId != UserHandle.myUserId()) {
mProfileUserId = profileId;
}
}
}
@Override
public void displayPreference(PreferenceScreen screen) {
super.displayPreference(screen);
mPreference = screen.findPreference(getPreferenceKey());
int userId = KEY_LOCKSCREEN_REDACT.equals(getPreferenceKey())
? UserHandle.myUserId() : mProfileUserId;
if (userId != UserHandle.USER_NULL) {
mPreference.setDisabledByAdmin(getEnforcedAdmin(userId));
}
}
@Override
public boolean isChecked() {
int userId = KEY_LOCKSCREEN_REDACT.equals(getPreferenceKey())
? UserHandle.myUserId() : mProfileUserId;
return getAllowPrivateNotifications(userId);
}
@Override
public boolean setChecked(boolean isChecked) {
int userId = KEY_LOCKSCREEN_REDACT.equals(getPreferenceKey())
? UserHandle.myUserId() : mProfileUserId;
Settings.Secure.putIntForUser(mContext.getContentResolver(),
Settings.Secure.LOCK_SCREEN_ALLOW_PRIVATE_NOTIFICATIONS, isChecked ? 1 : 0, userId);
return true;
}
@Override
public int getAvailabilityStatus() {
// hide work profile setting if no work profile
if (KEY_LOCKSCREEN_WORK_PROFILE_REDACT.equals(getPreferenceKey())
&& mProfileUserId == UserHandle.myUserId()) {
return CONDITIONALLY_UNAVAILABLE;
}
int userId = KEY_LOCKSCREEN_REDACT.equals(getPreferenceKey())
? UserHandle.myUserId() : mProfileUserId;
// hide if lockscreen isn't secure for this user
final LockPatternUtils utils = FeatureFactory.getFactory(mContext)
.getSecurityFeatureProvider()
.getLockPatternUtils(mContext);
if (!utils.isSecure(userId)) {
return CONDITIONALLY_UNAVAILABLE;
}
// all notifs hidden? disabled
if (!getLockscreenNotificationsEnabled(userId)) {
return DISABLED_DEPENDENT_SETTING;
}
// specifically the work profile setting requires the work profile to be unlocked
if (KEY_LOCKSCREEN_WORK_PROFILE_REDACT.equals(getPreferenceKey())) {
if (mKm.isDeviceLocked(mProfileUserId)) {
return DISABLED_DEPENDENT_SETTING;
}
}
return AVAILABLE;
}
@Override
public void onStart() {
mContext.getContentResolver().registerContentObserver(
Settings.Secure.getUriFor(Settings.Secure.LOCK_SCREEN_SHOW_NOTIFICATIONS),
false /* notifyForDescendants */, mContentObserver);
}
@Override
public void onStop() {
mContext.getContentResolver().unregisterContentObserver(mContentObserver);
}
private RestrictedLockUtils.EnforcedAdmin getEnforcedAdmin(int userId) {
RestrictedLockUtils.EnforcedAdmin admin =
RestrictedLockUtilsInternal.checkIfKeyguardFeaturesDisabled(
mContext, KEYGUARD_DISABLE_SECURE_NOTIFICATIONS, userId);
if (admin != null) {
return admin;
}
admin = RestrictedLockUtilsInternal.checkIfKeyguardFeaturesDisabled(
mContext, KEYGUARD_DISABLE_UNREDACTED_NOTIFICATIONS, userId);
return admin;
}
private boolean getAllowPrivateNotifications(int userId) {
return Settings.Secure.getIntForUser(mContext.getContentResolver(),
LOCK_SCREEN_ALLOW_PRIVATE_NOTIFICATIONS, 1, userId) != 0;
}
private boolean getLockscreenNotificationsEnabled(int userId) {
return Settings.Secure.getIntForUser(mContext.getContentResolver(),
Settings.Secure.LOCK_SCREEN_SHOW_NOTIFICATIONS, 1, userId) != 0;
}
}
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