1 /* 2 * Copyright (C) 2014 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.systemui.qs; 18 19 import android.content.Context; 20 import android.database.ContentObserver; 21 import android.os.Handler; 22 import android.provider.Settings.Global; 23 24 import com.android.systemui.statusbar.policy.Listenable; 25 26 /** Helper for managing a global setting. **/ 27 public abstract class GlobalSetting extends ContentObserver implements Listenable { 28 private final Context mContext; 29 private final String mSettingName; 30 31 protected abstract void handleValueChanged(int value); 32 33 public GlobalSetting(Context context, Handler handler, String settingName) { 34 super(handler); 35 mContext = context; 36 mSettingName = settingName; 37 } 38 39 public int getValue() { 40 return Global.getInt(mContext.getContentResolver(), mSettingName, 0); 41 } 42 43 public void setValue(int value) { 44 Global.putInt(mContext.getContentResolver(), mSettingName, value); 45 } 46 47 @Override 48 public void setListening(boolean listening) { 49 if (listening) { 50 mContext.getContentResolver().registerContentObserver( 51 Global.getUriFor(mSettingName), false, this); 52 } else { 53 mContext.getContentResolver().unregisterContentObserver(this); 54 } 55 } 56 57 @Override 58 public void onChange(boolean selfChange) { 59 handleValueChanged(getValue()); 60 } 61 } 62
