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      1 /*
      2  * Copyright (C) 2017 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.development;
     18 
     19 import android.content.Context;
     20 import android.os.SystemProperties;
     21 import android.support.annotation.VisibleForTesting;
     22 import android.support.v14.preference.SwitchPreference;
     23 import android.support.v7.preference.Preference;
     24 
     25 import com.android.settings.core.PreferenceControllerMixin;
     26 import com.android.settingslib.development.DeveloperOptionsPreferenceController;
     27 
     28 public class BluetoothSnoopLogPreferenceController extends DeveloperOptionsPreferenceController
     29         implements Preference.OnPreferenceChangeListener, PreferenceControllerMixin {
     30 
     31     private static final String PREFERENCE_KEY = "bt_hci_snoop_log";
     32     @VisibleForTesting
     33     static final String BLUETOOTH_BTSNOOP_ENABLE_PROPERTY =
     34             "persist.bluetooth.btsnoopenable";
     35 
     36     public BluetoothSnoopLogPreferenceController(Context context) {
     37         super(context);
     38     }
     39 
     40     @Override
     41     public String getPreferenceKey() {
     42         return PREFERENCE_KEY;
     43     }
     44 
     45     @Override
     46     public boolean onPreferenceChange(Preference preference, Object newValue) {
     47         final boolean enableBtSnoopLog = (Boolean) newValue;
     48         SystemProperties.set(BLUETOOTH_BTSNOOP_ENABLE_PROPERTY, Boolean.toString(enableBtSnoopLog));
     49         return true;
     50     }
     51 
     52     @Override
     53     public void updateState(Preference preference) {
     54         super.updateState(preference);
     55         final boolean enableBtSnoopLog = SystemProperties.getBoolean(
     56                 BLUETOOTH_BTSNOOP_ENABLE_PROPERTY, false /* def */);
     57         ((SwitchPreference) mPreference).setChecked(enableBtSnoopLog);
     58     }
     59 
     60     @Override
     61     protected void onDeveloperOptionsSwitchDisabled() {
     62         super.onDeveloperOptionsSwitchDisabled();
     63         SystemProperties.set(BLUETOOTH_BTSNOOP_ENABLE_PROPERTY, Boolean.toString(false));
     64         ((SwitchPreference) mPreference).setChecked(false);
     65     }
     66 }
     67