| /* |
| * Copyright (C) 2016 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.statusbar.policy; |
| |
| import android.content.Context; |
| import android.net.INetworkPolicyListener; |
| import android.net.NetworkPolicyManager; |
| import android.os.Handler; |
| import android.os.Looper; |
| import android.os.RemoteException; |
| |
| import java.util.ArrayList; |
| |
| public class DataSaverController { |
| |
| private final Handler mHandler = new Handler(Looper.getMainLooper()); |
| private final ArrayList<Listener> mListeners = new ArrayList<>(); |
| private final NetworkPolicyManager mPolicyManager; |
| |
| public DataSaverController(Context context) { |
| mPolicyManager = NetworkPolicyManager.from(context); |
| } |
| |
| private void handleRestrictBackgroundChanged(boolean isDataSaving) { |
| synchronized (mListeners) { |
| for (int i = 0; i < mListeners.size(); i++) { |
| mListeners.get(i).onDataSaverChanged(isDataSaving); |
| } |
| } |
| } |
| |
| public void addListener(Listener listener) { |
| synchronized (mListeners) { |
| mListeners.add(listener); |
| if (mListeners.size() == 1) { |
| mPolicyManager.registerListener(mPolicyListener); |
| } |
| } |
| listener.onDataSaverChanged(isDataSaverEnabled()); |
| } |
| |
| public void remListener(Listener listener) { |
| synchronized (mListeners) { |
| mListeners.remove(listener); |
| if (mListeners.size() == 0) { |
| mPolicyManager.unregisterListener(mPolicyListener); |
| } |
| } |
| } |
| |
| public boolean isDataSaverEnabled() { |
| return mPolicyManager.getRestrictBackground(); |
| } |
| |
| public void setDataSaverEnabled(boolean enabled) { |
| mPolicyManager.setRestrictBackground(enabled); |
| try { |
| mPolicyListener.onRestrictBackgroundChanged(enabled); |
| } catch (RemoteException e) { |
| } |
| } |
| |
| private final INetworkPolicyListener mPolicyListener = new INetworkPolicyListener.Stub() { |
| @Override |
| public void onUidRulesChanged(int uid, int uidRules) throws RemoteException { |
| } |
| |
| @Override |
| public void onMeteredIfacesChanged(String[] strings) throws RemoteException { |
| } |
| |
| @Override |
| public void onRestrictBackgroundChanged(final boolean isDataSaving) throws RemoteException { |
| mHandler.post(new Runnable() { |
| @Override |
| public void run() { |
| handleRestrictBackgroundChanged(isDataSaving); |
| } |
| }); |
| } |
| |
| @Override |
| public void onUidPoliciesChanged(int uid, int uidPolicies) throws RemoteException { |
| } |
| }; |
| |
| public interface Listener { |
| void onDataSaverChanged(boolean isDataSaving); |
| } |
| |
| } |