| /* |
| * Copyright (C) 2020 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.settings.network; |
| |
| import android.content.Context; |
| import android.net.EthernetManager; |
| import android.net.TetheringManager; |
| import android.os.Handler; |
| import android.os.Looper; |
| |
| import androidx.lifecycle.Lifecycle; |
| import androidx.lifecycle.OnLifecycleEvent; |
| |
| import com.android.internal.annotations.VisibleForTesting; |
| |
| import java.util.HashSet; |
| |
| /** |
| * This controller helps to manage the switch state and visibility of ethernet tether switch |
| * preference. |
| */ |
| public final class EthernetTetherPreferenceController extends TetherBasePreferenceController { |
| |
| private final HashSet<String> mAvailableInterfaces = new HashSet<>(); |
| private final EthernetManager mEthernetManager; |
| |
| @VisibleForTesting |
| EthernetManager.InterfaceStateListener mEthernetListener; |
| |
| public EthernetTetherPreferenceController(Context context, String preferenceKey) { |
| super(context, preferenceKey); |
| mEthernetManager = context.getSystemService(EthernetManager.class); |
| } |
| |
| @OnLifecycleEvent(Lifecycle.Event.ON_START) |
| public void onStart() { |
| mEthernetListener = (iface, state, role, configuration) -> { |
| if (state == EthernetManager.STATE_LINK_UP) { |
| mAvailableInterfaces.add(iface); |
| } else { |
| mAvailableInterfaces.remove(iface); |
| } |
| updateState(mPreference); |
| }; |
| final Handler handler = new Handler(Looper.getMainLooper()); |
| // Executor will execute to post the updateState event to a new handler which is created |
| // from the main looper when the {@link EthernetManager.Listener.onAvailabilityChanged} |
| // is triggerd. |
| if (mEthernetManager != null) { |
| mEthernetManager.addInterfaceStateListener(r -> handler.post(r), mEthernetListener); |
| } |
| } |
| |
| @OnLifecycleEvent(Lifecycle.Event.ON_STOP) |
| public void onStop() { |
| if (mEthernetManager != null) { |
| mEthernetManager.removeInterfaceStateListener(mEthernetListener); |
| } |
| } |
| |
| @Override |
| public boolean shouldEnable() { |
| ensureRunningOnMainLoopThread(); |
| String[] available = mTm.getTetherableIfaces(); |
| for (String s : available) { |
| if (mAvailableInterfaces.contains(s)) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| @Override |
| public boolean shouldShow() { |
| return mEthernetManager != null; |
| } |
| |
| @Override |
| public int getTetherType() { |
| return TetheringManager.TETHERING_ETHERNET; |
| } |
| |
| private void ensureRunningOnMainLoopThread() { |
| if (Looper.getMainLooper().getThread() != Thread.currentThread()) { |
| throw new IllegalStateException( |
| "Not running on main loop thread: " |
| + Thread.currentThread().getName()); |
| } |
| } |
| } |