Fixes further smaller Bugs

* Fixes PortEditorPanel status selector not working when status == port
* Fixes Simulation running past endTime
* Fixes more ConcurrentModificationExceptions

src/main/java/de/tu_darmstadt/tk/SmartHomeNetworkSim/core/ConnectionImplementation.java

@@ -45,6 +45,7 @@ public class ConnectionImplementation implements Connection {
 		boolean removed = participants.remove(sd);
 		if(removed)
 			removedParticipants.add(sd);
+		if(participants.size()<2)setStatus(Connection.TERMINATED);
 		return removed;
 	}
 
@@ -72,6 +73,7 @@ public class ConnectionImplementation implements Connection {
 	public Collection<Packet> getTerminationPackages(long startTime) {
 		changed=!removedParticipants.isEmpty();
 		removedParticipants.clear();
+		if(status==TERMINATED)status = DONE;
 		return protocol.generateNextPakets(null, startTime, false);
 	}
 

src/main/java/de/tu_darmstadt/tk/SmartHomeNetworkSim/view/PortEditorPanel.java

@@ -274,7 +274,7 @@ public class PortEditorPanel extends JPanel
 		}
 		
 		//Edit Status
-		if(cmbStatus.getSelectedIndex()!=toChange.getPortNumber())
+		if(cmbStatus.getSelectedIndex()!=toChange.getStatus())
 			toChange.setStatus((short) cmbStatus.getSelectedIndex());
 		
 		//Edit trigger Interval

src/main/java/de/tu_darmstadt/tk/SmartHomeNetworkSim/view/SimulationConfigurator.java

@@ -155,10 +155,11 @@ public class SimulationConfigurator extends JFrame {
 	}
 	
 	private void simulateTimeStep(){
-		if(currentTime>endTime){
+		if(currentTime>=endTime){
 			timer.stop();
 			return;
 		}
+		duration = currentTime + duration > endTime ? endTime-currentTime : duration;
 		sim.simulateTimeIntervall(currentTime,duration);
 		currentTime += duration;
 		progressBar.setValue((int)((currentTime-startTime)*10000/(endTime-startTime)));

src/main/java/de/tu_darmstadt/tk/SmartHomeNetworkSim/view/VisualisationPanel.java

@@ -107,7 +107,12 @@ public class VisualisationPanel extends JPanel implements Observer {
 	public void paintDevices(Graphics g) {
 
 		for (Iterator<SmartDevice> it = model.getDevices().iterator();it.hasNext();) {
-			SmartDevice s = it.next();
+			SmartDevice s;
+			try {
+				s = it.next();
+			} catch (Exception e) {
+				continue;
+			}
 			int x = s.getX();
 			int y = s.getY();
 			if (s == interactor.dragged) {