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/*
* 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.server.wifi;
import android.annotation.NonNull;
import android.net.wifi.IStaStateCallback;
import android.os.Handler;
import android.os.IBinder;
import android.os.Looper;
import android.os.RemoteException;
import android.util.Log;
import com.android.server.wifi.util.ExternalCallbackTracker;
public class WifiStaStateNotifier {
private final ExternalCallbackTracker<IStaStateCallback> mRegisteredCallbacks;
private static WifiInjector mWifiInjector;
private static final String TAG = "WifiStaStateNotifier";
private static final boolean DEBUG = false;
WifiStaStateNotifier(@NonNull Looper looper, WifiInjector wifiInjector) {
mRegisteredCallbacks = new ExternalCallbackTracker<IStaStateCallback>(new Handler(looper));
mWifiInjector = wifiInjector;
}
public void addCallback(IBinder binder, IStaStateCallback callback,
int callbackIdentifier) {
if (DEBUG) Log.d(TAG, "addCallback");
if (mRegisteredCallbacks.getNumCallbacks() > 0) {
if (DEBUG) Log.e(TAG, "Failed to add callback, only support single request!");
return;
}
if (!mRegisteredCallbacks.add(binder, callback, callbackIdentifier)) {
if (DEBUG) Log.e(TAG, "Failed to add callback");
return;
}
mWifiInjector.getActiveModeWarden().registerStaEventCallback();
}
public void removeCallback(int callbackIdentifier) {
if (DEBUG) Log.d(TAG, "removeCallback");
mRegisteredCallbacks.remove(callbackIdentifier);
mWifiInjector.getActiveModeWarden().unregisterStaEventCallback();
}
public void onStaToBeOff() {
if (DEBUG) Log.d(TAG, "onStaToBeOff");
for (IStaStateCallback callback : mRegisteredCallbacks.getCallbacks()) {
try {
if (DEBUG) Log.d(TAG, "callback onStaToBeOff");
callback.onStaToBeOff();
} catch (RemoteException e) {
// do nothing
}
}
}
}
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