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/*
* Jitsi, the OpenSource Java VoIP and Instant Messaging client.
*
* Copyright @ 2015 Atlassian Pty Ltd
*
* 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 net.java.sip.communicator.impl.sysactivity;
import net.java.sip.communicator.service.sysactivity.event.*;
import net.java.sip.communicator.util.*;
import org.freedesktop.*;
import org.freedesktop.dbus.*;
import org.freedesktop.dbus.exceptions.*;
/**
* Responsible for subscribe and dispatch signals from NetworkManager.
* Uses dbus to connect.
*
* @author Damian Minkov
*/
@SuppressWarnings("rawtypes")
public class NetworkManagerListenerImpl
implements DBusSigHandler,
SystemActivityManager
{
/**
* The logger.
*/
private Logger logger = Logger.getLogger(
NetworkManagerListenerImpl.class.getName());
/**
* Dbus connection we use.
*/
private DBusConnection dbusConn;
/**
* Make only one instance.
*/
public NetworkManagerListenerImpl()
{
try
{
dbusConn = DBusConnection.getConnection(DBusConnection.SYSTEM);
}
catch(DBusException e)
{
logger.error("Cannot obtain dbus connection", e);
}
}
/**
* Starts
*/
@SuppressWarnings("unchecked")
public void start()
{
// on error connecting to dbus do nothing
if(dbusConn == null)
return;
try
{
dbusConn.addSigHandler(DBus.NameOwnerChanged.class, this);
dbusConn.addSigHandler(DBusNetworkManager.StateChange.class, this);
dbusConn.addSigHandler(DBusNetworkManager.StateChanged.class, this);
}
catch(DBusException e)
{
logger.error("Error adding dbus signal handlers", e);
}
}
/**
* Stops.
*/
@SuppressWarnings("unchecked")
public void stop()
{
// on error connecting to dbus do nothing
if(dbusConn == null)
return;
try
{
dbusConn.removeSigHandler(DBus.NameOwnerChanged.class, this);
dbusConn.removeSigHandler(
DBusNetworkManager.StateChange.class, this);
dbusConn.removeSigHandler(
DBusNetworkManager.StateChanged.class, this);
}
catch(DBusException e)
{
logger.error("Error removing dbus signal handlers", e);
}
}
/**
* Receives signals and dispatch them.
* @param dBusSignal signal to handle.
*/
public void handle(DBusSignal dBusSignal)
{
if(dBusSignal instanceof DBus.NameOwnerChanged)
{
DBus.NameOwnerChanged nameOwnerChanged =
(DBus.NameOwnerChanged)dBusSignal;
if(nameOwnerChanged.name.equals("org.freedesktop.NetworkManager"))
{
boolean b1 = nameOwnerChanged.old_owner != null
&& nameOwnerChanged.old_owner.length() > 0;
boolean b2 = nameOwnerChanged.new_owner != null
&& nameOwnerChanged.new_owner.length() > 0;
if(b1 && !b2)
{
SystemActivityEvent evt = new SystemActivityEvent(
SysActivityActivator.getSystemActivityService(),
SystemActivityEvent.EVENT_NETWORK_CHANGE);
SysActivityActivator.getSystemActivityService()
.fireSystemActivityEvent(evt);
}
}
}
else if(dBusSignal instanceof DBusNetworkManager.StateChange)
{
DBusNetworkManager.StateChange stateChange =
(DBusNetworkManager.StateChange)dBusSignal;
SystemActivityEvent evt = null;
switch(stateChange.getStatus())
{
case DBusNetworkManager.NM_STATE_CONNECTED:
case DBusNetworkManager.NM_STATE_DISCONNECTED:
case DBusNetworkManager.NM9_STATE_DISCONNECTED:
case DBusNetworkManager.NM9_STATE_CONNECTED_LOCAL:
case DBusNetworkManager.NM9_STATE_CONNECTED_SITE:
case DBusNetworkManager.NM9_STATE_CONNECTED_GLOBAL:
evt = new SystemActivityEvent(
SysActivityActivator.getSystemActivityService(),
SystemActivityEvent.EVENT_NETWORK_CHANGE);
break;
case DBusNetworkManager.NM_STATE_ASLEEP:
case DBusNetworkManager.NM9_STATE_ASLEEP:
evt = new SystemActivityEvent(
SysActivityActivator.getSystemActivityService(),
SystemActivityEvent.EVENT_SLEEP);
break;
}
if(evt != null)
SysActivityActivator.getSystemActivityService()
.fireSystemActivityEvent(evt);
}
}
/**
* Whether we are connected to the network manager through dbus.
* @return whether we are connected to the network manager.
*/
public boolean isConnected()
{
return dbusConn != null;
}
}
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