Init mit Aufgabe10

src/ChatProgramm/controller/CommandController.java

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+/*
+ * 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.CommandConnect;
+import ChatProgramm.controller.commands.CommandInvoker;
+import ChatProgramm.controller.commands.CommandSend;
+import ChatProgramm.view.ChatView;
+import java.awt.Component;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+
+/**
+ *
+ * @author ahren
+ */
+public class CommandController implements ActionListener{
+    
+    private ChatView view;
+    private CommandInvoker invoker;
+        
+    public CommandController(ChatView view){
+        this.view = view;
+        this.invoker = new CommandInvoker();
+    }
+    
+    public void registerEvents(){
+        view.getBtnConnect().addActionListener(this); 
+        view.getTfNachricht().addActionListener(this);
+    }
+    
+    public void registerCommands(){
+        CommandSend commandSend = new CommandSend(view);
+        invoker.addCommand(view.getBtnConnect(), new CommandConnect(view, commandSend));
+        invoker.addCommand(view.getTfNachricht(), commandSend);
+    }
+
+    /**
+     * Ausführen des jeweiligen Kommandos
+     * @param e Referenz auf das Event
+     */
+    @Override
+    public void actionPerformed(ActionEvent e) {
+        Component key = (Component)e.getSource();
+        invoker.executeCommand(key);
+//        if(key == view.getBtnOpen()|| key==view.getMiOpen())
+//          invoker.deleteStack();
+//        }
+    }
+    
+}
+
+

src/ChatProgramm/controller/commands/CommandConnect.java

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+/*
+ * 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.commands;
+
+import ChatProgramm.model.Client;
+import ChatProgramm.model.Server;
+import ChatProgramm.util.OhmLogger;
+import ChatProgramm.view.ChatView;
+import java.io.IOException;
+import java.util.logging.Logger;
+import javax.swing.JDialog;
+import javax.swing.JRadioButton;
+
+/**
+ *
+ * @author ahren
+ */
+public class CommandConnect implements CommandInterface
+{
+    private JRadioButton rBtnServer;
+    private JRadioButton rBtnClient;
+    private JDialog dialogFenster;
+    private static Logger lg = OhmLogger.getLogger();
+    private CommandSend commandSend;
+    private ChatView view;
+    
+    public CommandConnect(ChatView view, CommandInterface value)
+  {
+      rBtnServer = view.getBtnServer();
+      rBtnClient = view.getBtnClient();
+      dialogFenster = view.getjDialog1();
+
+      commandSend = (CommandSend) value;
+
+      this.view = view;
+  }
+
+  @Override
+  public void execute()
+  {
+      if(rBtnServer.isSelected()){
+          lg.info("Server ausgewählt");
+          try {
+             commandSend.transmitterInterface =  new Server(view);
+          } catch (IOException ex) {
+              lg.info("Die Verbindung zum Server ist Fehlgeschlagen");
+          }
+      }
+      
+      if(rBtnClient.isSelected()){
+          lg.info("Client ausgewählt");
+          try {
+              commandSend.transmitterInterface =  new Client(view);
+          } catch (IOException ex) {
+              lg.info("Die Verbindung zum Client ist Fehlgeschlagen");
+
+          }
+      }
+      
+      dialogFenster.setVisible(false);
+  }
+
+  @Override
+  public boolean isUndoable()
+  {
+    return false;
+  }
+
+  @Override
+  public void undo()
+  {
+  }
+}

src/ChatProgramm/controller/commands/CommandInterface.java

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+/*
+ * 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.commands;
+
+/**
+ *
+ * @author ahren
+ */
+public interface CommandInterface
+{
+  public void execute();
+  public void undo();
+  public boolean isUndoable();
+}

src/ChatProgramm/controller/commands/CommandInvoker.java

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+/*
+ * 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.commands;
+
+import java.awt.Component;
+import java.util.HashMap;
+import java.util.Stack;
+
+/**
+ *
+ * @author ahren
+ */
+public class CommandInvoker {
+    
+    private HashMap<Component, CommandInterface> commands;
+    private Stack <CommandInterface> undoStack;
+    
+    public CommandInvoker(){
+        commands = new HashMap<>();
+        undoStack = new Stack();  
+    }
+    
+    /**
+    * Fügt ein Kommando zur Kommando-"Datenbank" = HashMap hinzu
+    * @param key Quelle des Events
+    * @param value Referenz auf das zugehörige Kommando-Objekt
+    */
+    public void addCommand(Component key, CommandInterface value){
+        commands.put(key, value);
+    }
+    
+    /**
+    * Führt Kommando der Eventquelle "key" aus und legt die Referenz
+    * des Kommando in den Undo-Stack
+    * @param key Referenz auf die Eventquelle
+    */
+    public void executeCommand(Component key){
+      CommandInterface command = commands.get(key);
+      command.execute();
+      if (command.isUndoable())
+      {
+        undoStack.push(command);
+      }
+    }
+    /**
+    * Falls der Stack Elemente enthält, wird das oberste Element geholt
+    * und die Methode "undo" des Commands aufgerufen
+    */
+    public void undoCommand()
+    {
+      if (!undoStack.isEmpty())
+      {
+        undoStack.pop().undo();
+      }
+    }
+
+    /**
+     * Löscht bei Öffnen einer neuen Datei den Stack
+     */
+    public void deleteStack()
+    {
+      while(!undoStack.isEmpty())
+        undoStack.pop();
+    }
+    
+}

src/ChatProgramm/controller/commands/CommandSend.java

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+/*
+ * 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.commands;
+
+import ChatProgramm.model.Client;
+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.model.Nachricht;
+
+/**
+ *
+ * @author ahren
+ */
+public class CommandSend implements CommandInterface
+{
+  private static Logger lg = OhmLogger.getLogger();
+  private JTextField eingabeFeld;
+  private String nachricht;
+  private ChatView view;
+  public TransmitterInterface transmitterInterface;
+  public Server server;
+  public Client client;
+
+
+  
+    
+  public CommandSend(ChatView view)
+  {
+      this.view = view;
+      this.eingabeFeld = view.getTfNachricht();
+      transmitterInterface = null;
+  }
+
+  @Override
+  public void execute()
+  {
+      if(transmitterInterface != null && !eingabeFeld.getText().isEmpty()){
+          transmitterInterface.send(eingabeFeld.getText());
+          eingabeFeld.setText("");
+      }
+  }
+
+
+  @Override
+  public boolean isUndoable()
+  {
+    return false;
+  }
+
+  @Override
+  public void undo()
+  {
+  }
+}