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/*
* Copyright (C) 2016 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.content.Context;
import android.content.pm.PackageManager;
import android.os.UserHandle;
import android.os.UserManager;
import androidx.annotation.VisibleForTesting;
import androidx.preference.Preference;
import com.android.internal.telephony.CellBroadcastUtils;
import com.android.settings.accounts.AccountRestrictionHelper;
import com.android.settings.core.PreferenceControllerMixin;
import com.android.settingslib.RestrictedPreference;
import com.android.settingslib.core.AbstractPreferenceController;
/**
* Base class for preference controller that handles preference that enforce adjust volume
* restriction
*/
public class EmergencyBroadcastPreferenceController extends AbstractPreferenceController
implements PreferenceControllerMixin {
private final String mPrefKey;
private AccountRestrictionHelper mHelper;
private UserManager mUserManager;
private PackageManager mPm;
public EmergencyBroadcastPreferenceController(Context context, String prefKey) {
this(context, new AccountRestrictionHelper(context), prefKey);
}
@VisibleForTesting(otherwise = VisibleForTesting.NONE)
EmergencyBroadcastPreferenceController(Context context, AccountRestrictionHelper helper,
String prefKey) {
super(context);
mPrefKey = prefKey;
mHelper = helper;
mUserManager = (UserManager) context.getSystemService(Context.USER_SERVICE);
mPm = mContext.getPackageManager();
}
@Override
public void updateState(Preference preference) {
if (!(preference instanceof RestrictedPreference)) {
return;
}
((RestrictedPreference) preference).checkRestrictionAndSetDisabled(
UserManager.DISALLOW_CONFIG_CELL_BROADCASTS);
}
@Override
public boolean handlePreferenceTreeClick(Preference preference) {
return false;
}
@Override
public String getPreferenceKey() {
return mPrefKey;
}
@Override
public boolean isAvailable() {
return mUserManager.isAdminUser() && isCellBroadcastAppLinkEnabled()
&& !mHelper.hasBaseUserRestriction(
UserManager.DISALLOW_CONFIG_CELL_BROADCASTS, UserHandle.myUserId());
}
private boolean isCellBroadcastAppLinkEnabled() {
// Enable link to CMAS app settings depending on the value in config.xml.
boolean enabled = mContext.getResources().getBoolean(
com.android.internal.R.bool.config_cellBroadcastAppLinks) &&
// For data-only tablet devices which need to not forwarding any WEA-alert and hide from
// settings menu.
!mContext.getResources().getBoolean(
com.android.internal.R.bool.config_disable_all_cb_messages);
if (enabled) {
try {
String packageName = CellBroadcastUtils
.getDefaultCellBroadcastReceiverPackageName(mContext);
if (packageName == null || mPm.getApplicationEnabledSetting(packageName)
== PackageManager.COMPONENT_ENABLED_STATE_DISABLED) {
enabled = false; // CMAS app disabled
}
} catch (IllegalArgumentException ignored) {
enabled = false; // CMAS app not installed
}
}
return enabled;
}
}