angepasst an Lehners UML,

Transmitterinterface raus, nur noch ein Controller und ein Chatmodel
mit GrafikDaten anstatt GrafikModel
das einzige was noch nicht so ist wie in seinem UML ist, dass das 
Chatmodel kein Subscriber ist sondern immernoch der Transmitter

src/ChatProgramm/Start.java

 package ChatProgramm;
 
 import ChatProgramm.controller.CommandController;
-import ChatProgramm.controller.GrafikController;
-import ChatProgramm.model.GrafikModel;
+import ChatProgramm.model.ChatModel;
 import ChatProgramm.view.ChatView;
-import ChatProgramm.view.GrafikView;
 import javax.swing.JOptionPane;
 import javax.swing.UIManager;
 
 {
   public Start()
   {
-    GrafikModel model = new GrafikModel();
     ChatView view = new ChatView();
-    GrafikView zeichenflaeche = view.getGvZeichenflaeche();
-    zeichenflaeche.setModel(model);
-    
-    GrafikController controller = new GrafikController(zeichenflaeche, model);
-    controller.registerEvents();
-    
-    CommandController controller_commands = new CommandController(view, model, controller, zeichenflaeche);
+    ChatModel model = new ChatModel(view);
+    view.getGvZeichenflaeche().setModel(model.getGrafikDaten());
+    CommandController controller_commands = new CommandController(view, model);
     controller_commands.registerEvents();
     controller_commands.registerCommands();
-    
-    
-    
-    
     view.setVisible(true);
   }
 

src/ChatProgramm/controller/CommandController.java

 import ChatProgramm.controller.commands.CommandConnect;
 import ChatProgramm.controller.commands.CommandInvoker;
 import ChatProgramm.controller.commands.CommandSend;
-import ChatProgramm.model.GrafikModel;
+import ChatProgramm.model.ChatModel;
 import ChatProgramm.view.ChatView;
-import ChatProgramm.view.GrafikView;
 import java.awt.Component;
+import java.awt.Point;
 import java.awt.event.ActionEvent;
 import java.awt.event.ActionListener;
+import java.awt.event.MouseAdapter;
+import java.awt.event.MouseEvent;
+import static java.awt.event.MouseEvent.MOUSE_RELEASED;
+import java.awt.event.MouseMotionListener;
 
 /**
  *
  * @author ahren
  */
-public class CommandController implements ActionListener{
+public class CommandController extends MouseAdapter implements MouseMotionListener, ActionListener{
     
     private ChatView view;
-    private GrafikModel model;
-    private GrafikView gView;
+    private ChatModel model;
     private CommandInvoker invoker;
-    private GrafikController controller;
         
-public CommandController(ChatView view, GrafikModel model, GrafikController controller, GrafikView gView){
+public CommandController(ChatView view, ChatModel model){
         this.view = view;
         this.model = model;
-        this.gView = gView;
         this.invoker = new CommandInvoker();
-        this.controller = controller;
     }
     
     public void registerEvents(){
-        view.getBtnConnect().addActionListener(this); 
+        view.getBtnConnect().addActionListener(this);
+        view.addMouseMotionListener(this);
+        view.addMouseListener(this);
     }
     
     public void registerCommands(){
-        CommandSend commandSend = new CommandSend(view.getGvZeichenflaeche(), model);
-        invoker.addCommand(view.getBtnConnect(), new CommandConnect(view, commandSend, model, gView));
-        this.controller.setCommand(commandSend);
+      invoker.addCommand(view.getBtnConnect(), new CommandConnect(view, model));
+      
+      invoker.addCommand(view.getGvZeichenflaeche(), new CommandSend(view, model));
     }
-
+     
     /**
      * Ausführen des jeweiligen Kommandos
      * @param e Referenz auf das Event
         invoker.executeCommand(key);
 
     }
+     @Override
+     public void mouseDragged(MouseEvent evt)
+  {
+    Point p = evt.getPoint();
+    model.getGrafikDaten().addPoint(p);
+    view.getGvZeichenflaeche().drawPoint();
+  }
+    @Override
+  public void mouseReleased(MouseEvent evt)
+  {
+      model.getGrafikDaten().endShape();
+      invoker.executeCommand(view.getGvZeichenflaeche());
+
+  }
     
 }
 

src/ChatProgramm/controller/GrafikController.java

-/*
- * Click nbfs://nbhost/SystemFileSystem/Templates/Licenses/license-default.txt to change this license
- * Click nbfs://nbhost/SystemFileSystem/Templates/Classes/Class.java to edit this template
- */
-
-package ChatProgramm.controller;
-
-import ChatProgramm.controller.commands.CommandSend;
-import java.awt.Point;
-import java.awt.event.MouseAdapter;
-import java.awt.event.MouseEvent;
-import java.awt.event.MouseMotionListener;
-import ChatProgramm.model.GrafikModel;
-import ChatProgramm.view.GrafikView;
-
-/**
- *
- * @author le
- */
-public class GrafikController extends MouseAdapter implements MouseMotionListener
-{
-  private GrafikView view;
-  private GrafikModel model;
-  private CommandSend commandSend;
-  
-  public GrafikController(GrafikView view, GrafikModel model)
-  {
-    this.view = view;
-    this.model = model;
-    commandSend = null;
-  }
-  
-  void setCommand(CommandSend command){
-      this.commandSend = command;
-  }
-  
-  public void registerEvents()
-  {
-    view.addMouseMotionListener(this);
-    view.addMouseListener(this);
-  }
-
-
-
-  @Override
-  public void mouseDragged(MouseEvent evt)
-  {
-    Point p = evt.getPoint();
-    model.addPoint(p);
-    view.drawPoint();
-  }
-
-  @Override
-  public void mouseMoved(MouseEvent e)
-  {
-  }
-  
-  @Override
-  public void mouseReleased(MouseEvent evt)
-  {
-      model.endShape();
-      if(commandSend != null){
-        commandSend.execute();   
-      }
-
-  }
-}

src/ChatProgramm/controller/commands/CommandConnect.java

 
 package ChatProgramm.controller.commands;
 
+import ChatProgramm.model.ChatModel;
 import ChatProgramm.model.Client;
-import ChatProgramm.model.GrafikModel;
+import ChatProgramm.model.GrafikDaten;
 import ChatProgramm.model.Server;
+import ChatProgramm.model.Transmitter;
 import ChatProgramm.util.OhmLogger;
 import ChatProgramm.view.ChatView;
 import ChatProgramm.view.GrafikView;
     private JRadioButton rBtnClient;
     private JDialog dialogFenster;
     private static Logger lg = OhmLogger.getLogger();
-    private CommandSend commandSend;
     private ChatView view;
-    private GrafikModel model;
-    private GrafikView gView;
+    private ChatModel model;
     
-    public CommandConnect(ChatView view, CommandInterface value, GrafikModel model, GrafikView gView)
+    public CommandConnect(ChatView view, ChatModel model)
   {
       rBtnServer = view.getBtnServer();
       rBtnClient = view.getBtnClient();
       dialogFenster = view.getjDialog1();
-
-      commandSend = (CommandSend) value;
-
       this.view = view;
       this.model = model;
-      this.gView = gView;
   }
 
   @Override
       if(rBtnServer.isSelected()){
           lg.info("Server ausgewählt");
           try {
-              commandSend.setTransmitter(new Server(view, model, gView));
+              model.setTransmitterToServer();
           } catch (IOException ex) {
               lg.info("Die Verbindung zum Server ist Fehlgeschlagen");
           }
       if(rBtnClient.isSelected()){
           lg.info("Client ausgewählt");
           try {
-              commandSend.setTransmitter(new Client(view, model, gView));
+              model.setTransmitterToClient(); 
           } catch (IOException ex) {
               lg.info("Die Verbindung zum Client ist Fehlgeschlagen");
 
           }
       }
-      
       dialogFenster.setVisible(false);
   }
 

src/ChatProgramm/controller/commands/CommandSend.java

 
 package ChatProgramm.controller.commands;
 
-import ChatProgramm.model.Client;
+import ChatProgramm.model.ChatModel;
 import ChatProgramm.model.Figur;
-import ChatProgramm.model.GrafikModel;
-import ChatProgramm.model.Server;
-import ChatProgramm.model.TransmitterInterface;
 import ChatProgramm.util.OhmLogger;
 import ChatProgramm.view.ChatView;
 import java.util.logging.Logger;
-import javax.swing.JTextField;
-import ChatProgramm.view.GrafikView;
 
 /**
  *
 {
   private static Logger lg = OhmLogger.getLogger();
   
-  private GrafikView view;
-  private GrafikModel model;
+  private ChatView view;
+  private ChatModel model;
   
-  public TransmitterInterface transmitterInterface;
-  public Server server;
-  public Client client;
-
-
-  
-    
-  public CommandSend(GrafikView view, GrafikModel model)
+  public CommandSend(ChatView view, ChatModel model)
   {
       this.view = view;
       this.model = model;
-      //ToDo: Hier muss auch der gFrame referenziert werden
-      //this.eingabeFeld = view.getTfNachricht();
-      transmitterInterface = null;
   }
 
   @Override
   public void execute()
   {
-    Figur aktuelleFigur = model.getFiguren().getLast();
+    Figur aktuelleFigur = model.getGrafikDaten().getFiguren().getLast();
     try
     {
-        transmitterInterface.send(aktuelleFigur);
-        
+        model.getTransmitter().send(aktuelleFigur);
     }
     catch(Exception NullPointerExeption)
     {
     }
   }
 
-
   @Override
   public boolean isUndoable()
   {
   public void undo()
   {
   }
-
-    void setTransmitter(TransmitterInterface transmitter) {
-        lg.info("Transmitter wird gesetzt");
-        if(transmitter != null){
-            this.transmitterInterface = transmitter;
-            
-        }
-        else{
-            lg.info("der transmitter kommt hier als null an");
-        }
-    }
 }

src/ChatProgramm/model/ChatModel.java

+/*
+ * Click nbfs://nbhost/SystemFileSystem/Templates/Licenses/license-default.txt to change this license
+ * Click nbfs://nbhost/SystemFileSystem/Templates/Classes/Class.java to edit this template
+ */
+
+package ChatProgramm.model;
+
+import ChatProgramm.util.OhmLogger;
+import ChatProgramm.view.ChatView;
+import java.io.IOException;
+import java.util.logging.Logger;
+
+/**
+ *
+ * @author ahren
+ */
+public class ChatModel 
+{
+  
+  private Transmitter transmitter;
+  private static Logger lg = OhmLogger.getLogger();  
+  private GrafikDaten grafikdaten = new GrafikDaten();
+  private ChatView view;
+  
+  public ChatModel(ChatView view)
+  {
+    this.view = view;
+  }
+
+  public GrafikDaten getGrafikDaten()
+  {
+    return grafikdaten;
+  }
+
+  public void setTransmitterToClient() throws IOException
+  {
+    transmitter = new Client(view, this);
+  }
+
+  public void setTransmitterToServer()throws IOException
+  {
+    transmitter = new Server(view, this);
+  }
+
+  public Transmitter getTransmitter()
+  {
+    return transmitter;
+  }
+}

src/ChatProgramm/model/Client.java

 
     private static Logger lg = OhmLogger.getLogger();
     private static final int PORT = 35000; //lt. iana port > 2¹⁵
-    private static final String IP = "100.83.18.179";
+    private static final String IP = "127.0.0.1";
     
 
-    public Client(ChatView view, GrafikModel model, GrafikView gView) throws IOException {
-        super(view, model, gView);
+    public Client(ChatView view, ChatModel model) throws IOException {
+        super(view, model);
         connect();
         initIO();
     }

src/ChatProgramm/model/GrafikModel.java → src/ChatProgramm/model/GrafikDaten.java

  *
  * @author le
  */
-public class GrafikModel {
+public class GrafikDaten {
 
     private Figur aktuelleFigur;
     private ArrayList<Figur> figuren;
     private Preferences pref;
     private static Logger lg = OhmLogger.getLogger();
 
-    public GrafikModel() {
+    public GrafikDaten() {
         aktuelleFigur = new Figur();
         figuren = new ArrayList<>();
     }

src/ChatProgramm/model/ReceiveAdapter.java

     private static Logger lg = OhmLogger.getLogger();
 
     private ChatView view;
-    private GrafikModel model;
-    private GrafikView gView;
+    private ChatModel model;
     private Flow.Subscription subscription;
 
-    public ReceiveAdapter(ChatView view, GrafikModel model, GrafikView gView) {
+    public ReceiveAdapter(ChatView view, ChatModel model) {
         this.view = view;
         this.model = model;
-        this.gView = gView;
     }
 
     @Override
     }
 
     public void onNext(Figur item) {
-        model.addFigure(item);
-        gView.drawFigur();
+        model.getGrafikDaten().addFigure(item);
+        view.getGvZeichenflaeche().drawFigur();
         lg.info("Figur wurde dem Grafikmodel hinzugefügt");
         this.subscription.request(1);
     }

src/ChatProgramm/model/Server.java

   private static Logger lg = OhmLogger.getLogger();  
   private static final int PORT = 35000; //lt. iana port > 2¹⁵
   
-    public Server(ChatView view, GrafikModel model, GrafikView gView) throws IOException {
-        super(view, model, gView);
+    public Server(ChatView view, ChatModel model) throws IOException {
+        super(view, model);
         connect();
         initIO();
   } 

src/ChatProgramm/model/Transmitter.java

 package ChatProgramm.model;
 
 import ChatProgramm.view.ChatView;
-import ChatProgramm.view.GrafikView;
-import java.io.BufferedInputStream;
-import java.io.BufferedOutputStream;
-import java.io.BufferedReader;
 import java.io.IOException;
 import java.io.InputStream;
-import java.io.InputStreamReader;
 import java.io.ObjectInputStream;
 import java.io.ObjectOutputStream;
 import java.io.OutputStream;
-import java.io.OutputStreamWriter;
-import java.io.PrintWriter;
 import java.io.UnsupportedEncodingException;
 import java.net.Socket;
 import java.util.concurrent.ExecutorService;
  *
  * @author ahren
  */
-public abstract class Transmitter implements Runnable, Subscriber<Figur>, TransmitterInterface {
+public abstract class Transmitter implements Runnable, Subscriber<Figur> {
 
     static final int timeout = 60000;
     private static final int PORT = 35000;
     private ExecutorService eService;
     private String receivedString;
     private ChatView view;
-    private GrafikModel model;
+    private ChatModel model;
     private ReceiveAdapter receiveAdapter;
     
-    public Transmitter(ChatView view, GrafikModel model, GrafikView gView)
+    public Transmitter(ChatView view, ChatModel model)
     {
       socket = new Socket();
       eService = null;
-      receiveAdapter = new ReceiveAdapter(view, model, gView);
+      receiveAdapter = new ReceiveAdapter(view, model);
       figurPublisher = new SubmissionPublisher<>();
       this.view = view;
       addWertSubscription(receiveAdapter);
    * @param figur
    * @throws IOException
    */
-  @Override
     public void send(Figur figur){
       try
       {

src/ChatProgramm/model/TransmitterInterface.java

-/*
- * Click nbfs://nbhost/SystemFileSystem/Templates/Licenses/license-default.txt to change this license
- * Click nbfs://nbhost/SystemFileSystem/Templates/Classes/Interface.java to edit this template
- */
-package ChatProgramm.model;
-
-/**
- *
- * @author ahren
- */
-public interface TransmitterInterface
-{
-    public void send(Figur figur);
-    public Figur receive();
-
-}

src/ChatProgramm/view/GrafikView.java

 import javax.print.attribute.standard.DialogTypeSelection;
 import javax.swing.JComponent;
 import javax.swing.JOptionPane;
-import ChatProgramm.model.GrafikModel;
+import ChatProgramm.model.GrafikDaten;
 import ChatProgramm.util.OhmLogger;
 
 
   private static Dimension EINS = new Dimension(1, 1); // Dimension ist eine Klasse die width udn height hält
   private Rectangle2D.Float pixel;
   private Line2D.Float line;
-  private GrafikModel model;
+  private GrafikDaten model;
   
   private Point from = null;
   private Point to = null;
     line = new Line2D.Float();
   }
 
-  public void setModel(GrafikModel model)
+  public void setModel(GrafikDaten model)
   {
     this.model = model;
   }