1 /* 2 * Copyright (C) 2016 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.settings.notification; 18 19 import android.content.Context; 20 import android.content.IntentFilter; 21 import android.media.AudioManager; 22 import android.os.UserHandle; 23 import android.os.UserManager; 24 25 import androidx.annotation.VisibleForTesting; 26 import androidx.preference.Preference; 27 28 import com.android.settings.accounts.AccountRestrictionHelper; 29 import com.android.settings.core.SliderPreferenceController; 30 import com.android.settingslib.RestrictedPreference; 31 32 /** 33 * Base class for preference controller that handles preference that enforce adjust volume 34 * restriction 35 */ 36 public abstract class AdjustVolumeRestrictedPreferenceController extends 37 SliderPreferenceController { 38 39 private AccountRestrictionHelper mHelper; 40 AdjustVolumeRestrictedPreferenceController(Context context, String key)41 public AdjustVolumeRestrictedPreferenceController(Context context, String key) { 42 this(context, new AccountRestrictionHelper(context), key); 43 } 44 45 @VisibleForTesting AdjustVolumeRestrictedPreferenceController(Context context, AccountRestrictionHelper helper, String key)46 AdjustVolumeRestrictedPreferenceController(Context context, AccountRestrictionHelper helper, 47 String key) { 48 super(context, key); 49 mHelper = helper; 50 } 51 52 @Override updateState(Preference preference)53 public void updateState(Preference preference) { 54 if (!(preference instanceof RestrictedPreference)) { 55 return; 56 } 57 mHelper.enforceRestrictionOnPreference((RestrictedPreference) preference, 58 UserManager.DISALLOW_ADJUST_VOLUME, UserHandle.myUserId()); 59 } 60 61 @Override getIntentFilter()62 public IntentFilter getIntentFilter() { 63 final IntentFilter filter = new IntentFilter(); 64 filter.addAction(AudioManager.VOLUME_CHANGED_ACTION); 65 filter.addAction(AudioManager.STREAM_MUTE_CHANGED_ACTION); 66 filter.addAction(AudioManager.MASTER_MUTE_CHANGED_ACTION); 67 return filter; 68 } 69 } 70