| /* |
| * Copyright (C) 2014 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.systemui.qs; |
| |
| import android.app.ActivityManager; |
| import android.content.Context; |
| import android.database.ContentObserver; |
| import android.os.Handler; |
| import android.provider.Settings.Secure; |
| |
| import com.android.systemui.statusbar.policy.Listenable; |
| |
| /** Helper for managing a secure setting. **/ |
| public abstract class SecureSetting extends ContentObserver implements Listenable { |
| private static final int DEFAULT = 0; |
| |
| private final Context mContext; |
| private final String mSettingName; |
| |
| private boolean mListening; |
| private int mUserId; |
| private int mObservedValue = DEFAULT; |
| |
| protected abstract void handleValueChanged(int value, boolean observedChange); |
| |
| protected SecureSetting(Context context, Handler handler, String settingName) { |
| this(context, handler, settingName, ActivityManager.getCurrentUser()); |
| } |
| |
| public SecureSetting(Context context, Handler handler, String settingName, int userId) { |
| super(handler); |
| mContext = context; |
| mSettingName = settingName; |
| mUserId = userId; |
| } |
| |
| public int getValue() { |
| return Secure.getIntForUser(mContext.getContentResolver(), mSettingName, DEFAULT, mUserId); |
| } |
| |
| public void setValue(int value) { |
| Secure.putIntForUser(mContext.getContentResolver(), mSettingName, value, mUserId); |
| } |
| |
| @Override |
| public void setListening(boolean listening) { |
| if (listening == mListening) return; |
| mListening = listening; |
| if (listening) { |
| mObservedValue = getValue(); |
| mContext.getContentResolver().registerContentObserver( |
| Secure.getUriFor(mSettingName), false, this, mUserId); |
| } else { |
| mContext.getContentResolver().unregisterContentObserver(this); |
| mObservedValue = DEFAULT; |
| } |
| } |
| |
| @Override |
| public void onChange(boolean selfChange) { |
| final int value = getValue(); |
| handleValueChanged(value, value != mObservedValue); |
| mObservedValue = value; |
| } |
| |
| public void setUserId(int userId) { |
| mUserId = userId; |
| if (mListening) { |
| setListening(false); |
| setListening(true); |
| } |
| } |
| |
| public int getCurrentUser() { |
| return mUserId; |
| } |
| |
| public String getKey() { |
| return mSettingName; |
| } |
| |
| public boolean isListening() { |
| return mListening; |
| } |
| } |