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//
// Copyright 2018 Filippo "Fil" Bergamo <fil.bergamo@riseup.net>
//
// This file is part of RepWifiApp.
//
// RepWifiApp is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// RepWifiApp is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with RepWifiApp. If not, see <http://www.gnu.org/licenses/>.
//
// ********************************************************************
package fil.libre.repwifiapp.service;
import android.os.Handler;
import fil.libre.repwifiapp.helpers.Logger;
import fil.libre.repwifiapp.network.ConnectionStatus;
import fil.libre.repwifiapp.network.IEngine;
public class StatusManager {
public interface ConnectionStatusChangeListener {
public void onConnectionStatusChange(ConnectionStatus status);
}
private Handler handler;
private Runnable runnable;
private boolean isStarted = false;
private int interval = 30000;
private ConnectionStatus currentStatus;
private IEngine eng = null;
private ConnectionStatusChangeListener listener = null;
public StatusManager(IEngine engine, ConnectionStatusChangeListener listener) {
this.listener = listener;
handler = new Handler();
currentStatus = ConnectionStatus.getDummyDisconnected();
eng = engine;
}
public ConnectionStatus getConnectionStatus() {
updateStatus();
return currentStatus;
}
private void updateStatus() {
synchronized (currentStatus) {
ConnectionStatus nextStatus = eng.getConnectionStatus();
if (nextStatus == null) {
nextStatus = ConnectionStatus.getDummyDisconnected();
}
if (! currentStatus.equals(nextStatus) && listener != null) {
listener.onConnectionStatusChange(nextStatus);
}
this.currentStatus = nextStatus;
}
}
public void startPolling(int intervalMs) {
synchronized (this) {
if (isStarted) {
Logger.logDebug("Called StatusMonitor.start() but monitor already started.. ignoring..");
return;
}
isStarted = true;
this.interval = intervalMs;
runnable = new Runnable() {
@Override
public void run() {
try {
Logger.logDebug("Polling enabled, connection status update triggered.");
updateStatus();
} catch (Exception e) {
Logger.logError("Exception while executing recurring network status update..",
e);
}
handler.postDelayed(this, interval);
}
};
Logger.logDebug("Starting recurring network status update every " + interval + " ms");
handler.postDelayed(runnable, interval);
}
}
public void stopPolling() {
synchronized (this) {
if (!isStarted) {
Logger.logDebug("Called StatusMonitor.stop() but already stopped.. ignoring..");
return;
}
try {
handler.removeCallbacks(runnable);
Logger.logDebug("Stopped recurring network status update.");
} finally {
isStarted = false;
}
}
}
public void unsetListener(){
stopPolling();
this.listener = null;
}
}
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