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/**
* A network library for processing which supports UDP, TCP and Multicast.
*
* (c) 2004-2012
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General
* Public License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307 USA
*
* @author Andreas Schlegel http://www.sojamo.de
* @modified 12/23/2012
* @version 0.9.9
*/
package netP5;
import java.lang.reflect.Method;
import java.lang.reflect.InvocationTargetException;
import java.net.DatagramPacket;
import java.util.Vector;
class NetPlug {
protected boolean isEventMethod = false;
protected Method _myEventMethod;
protected String _myEventMethodName = "netEvent";
protected boolean isStatusMethod = false;
protected Method _myStatusMethod;
protected String _myStatusMethodName = "netStatus";
protected Class _myParentClass;
protected Object _myParent;
protected Vector _myNetListeners;
protected boolean isNetListener;
protected NetPlug(Object theObject) {
_myParent = theObject;
_myNetListeners = new Vector();
checkMethod();
}
protected void invoke(final Object theObject, final Method theMethod,
final Object[] theArgs) {
try {
theMethod.invoke(theObject, theArgs);
} catch (IllegalArgumentException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
} catch (InvocationTargetException e) {
System.out
.println("NetP5 ClassCastException. parsing failed for NetMessage "
+ e);
}
}
protected void checkMethod() {
try {
checkEventMethod();
checkStatusMethod();
} catch (Exception e) {
}
}
private boolean checkEventMethod() {
_myParentClass = _myParent.getClass();
if (_myEventMethodName != null) {
try {
_myEventMethod = _myParentClass.getDeclaredMethod(
_myEventMethodName, new Class[] { NetMessage.class });
isEventMethod = true;
_myEventMethod.setAccessible(true);
return true;
} catch (SecurityException e1) {
e1.printStackTrace();
} catch (NoSuchMethodException e1) {
System.out
.println("### NOTE. no netEvent(NetMessage theMessage) method available.");
}
}
if (_myEventMethod != null) {
return true;
}
return false;
}
private boolean checkStatusMethod() {
_myParentClass = _myParent.getClass();
if (_myStatusMethodName != null) {
try {
_myStatusMethod = _myParentClass.getDeclaredMethod(
_myStatusMethodName, new Class[] { NetStatus.class });
isStatusMethod = true;
_myStatusMethod.setAccessible(true);
return true;
} catch (SecurityException e1) {
e1.printStackTrace();
} catch (NoSuchMethodException e1) {
// System.out.println("### NOTE. no netStatus(NetStatus
// theMessage) method available.");
}
}
if (_myStatusMethod != null) {
return true;
}
return false;
}
/**
*
* @param theDatagramPacket
* DatagramPacket
* @param thePort
* int
* @invisible
*/
public void process(final DatagramPacket theDatagramPacket,
final int thePort) {
if (isNetListener || isEventMethod) {
NetMessage n = new NetMessage(theDatagramPacket);
for (int i = 0; i < _myNetListeners.size(); i++) {
getListener(i).netEvent(n);
}
if (isEventMethod) {
try {
invoke(_myParent, _myEventMethod, new Object[] { n });
} catch (ClassCastException e) {
System.out
.println("ChatP5.callMessage ClassCastException. failed to forward ChatMessage.");
}
}
}
}
/**
* @invisible
* @param theIndex
*/
public void status(int theIndex) {
if (isNetListener || isEventMethod) {
NetStatus n = new NetStatus(theIndex);
for (int i = 0; i < _myNetListeners.size(); i++) {
getListener(i).netStatus(n);
}
if (isStatusMethod) {
try {
invoke(_myParent, _myStatusMethod, new Object[] { n });
} catch (ClassCastException e) {
System.out
.println("ChatP5.callMessage ClassCastException. failed to forward ChatMessage.");
}
}
}
}
/**
*
* @param theTcpPacket
* TcpPacket
* @param thePort
* int
* @invisible
*/
public void process(final TcpPacket theTcpPacket, final int thePort) {
if (isNetListener || isEventMethod) {
NetMessage n = new NetMessage(theTcpPacket);
for (int i = 0; i < _myNetListeners.size(); i++) {
getListener(i).netEvent(n);
}
if (isEventMethod) {
try {
invoke(_myParent, _myEventMethod, new Object[] { n });
} catch (ClassCastException e) {
System.out
.println("NetP5.callMessage ClassCastException. failed to forward ChatMessage.");
}
}
}
}
protected void addListener(NetListener theListener) {
_myNetListeners.add(theListener);
isNetListener = true;
}
protected void removeListener(NetListener theListener) {
_myNetListeners.remove(theListener);
isNetListener = (_myNetListeners.size() > 0) ? true : false;
}
protected NetListener getListener(int theIndex) {
return ((NetListener) _myNetListeners.get(theIndex));
}
protected Vector getListeners() {
return _myNetListeners;
}
}
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