/*
|
* 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);
|
|
public SecureSetting(Context context, Handler handler, String settingName) {
|
super(handler);
|
mContext = context;
|
mSettingName = settingName;
|
mUserId = ActivityManager.getCurrentUser();
|
}
|
|
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);
|
}
|
}
|
}
|
