2 - The real one

src/Model/AdressverwaltungModel.java

@@ -1,120 +0,0 @@
-/*
- * To change this license header, choose License Headers in Project Properties.
- * To change this template file, choose Tools | Templates
- * and open the template in the editor.
- */
-
-package adressverwaltung.model;
-
-import java.io.BufferedInputStream;
-import java.io.BufferedOutputStream;
-import java.io.File;
-import java.io.FileInputStream;
-import java.io.FileNotFoundException;
-import java.io.FileOutputStream;
-import java.io.IOException;
-import java.io.ObjectInputStream;
-import java.io.ObjectOutputStream;
-import java.util.ArrayList;
-import javax.swing.table.AbstractTableModel;
-
-/**
- *
- * @author le
- */
-public class AdressverwaltungModel extends AbstractTableModel
-{
-  private ArrayList<ArrayList<String>> daten;
-  private ArrayList<String> adressEintraegeDaten;
-  private ArrayList<String> adressEintraegeNamen;
-  
-  public AdressverwaltungModel()
-  {
-    adressEintraegeDaten = new ArrayList<>();
-    adressEintraegeNamen = new ArrayList<>();
-    daten = new ArrayList<>();
-    adressEintraegeNamen.add("Name");
-    adressEintraegeDaten.add("Lehner");
-    adressEintraegeNamen.add("Telefon");
-    adressEintraegeDaten.add("122345");
-    daten.add(adressEintraegeDaten);
-  }
-
-  @Override
-  public int getRowCount()
-  {
-    return daten.size();
-  }
-
-  @Override
-  public int getColumnCount()
-  {
-    return adressEintraegeDaten.size();
-  }
-
-  @Override
-  public Object getValueAt(int row, int col)
-  {
-    return daten.get(row).get(col);
-  }
-  @Override
-  public void setValueAt(Object value, int row, int col)
-  {
-    daten.get(row).set(col, (String)value);
-  }
-  
-  @Override
-  public boolean isCellEditable(int row, int col)
-  {
-    return true;
-  }
-  
-  @Override
-  public String getColumnName(int col)
-  {
-    return adressEintraegeNamen.get(col);
-  }
-  
-  public void eintragHinzufuegen()
-  {
-    adressEintraegeDaten = new ArrayList<>();
-    adressEintraegeNamen.forEach(s -> adressEintraegeDaten.add(s));
-    daten.add(adressEintraegeDaten);
-    this.fireTableDataChanged();
-  }
-  
-  public void eintragLoeschen(int row)
-  {
-    daten.remove(row);
-    this.fireTableDataChanged();
-  }
-  
-  public void spalteHinzufuegen(String name)
-  {
-    adressEintraegeNamen.add(name);
-  }
-  
-  public void datenSpeichern(File datei) throws FileNotFoundException, IOException
-  {
-    FileOutputStream fos = new FileOutputStream(datei);
-    BufferedOutputStream bos = new BufferedOutputStream(fos);
-    ObjectOutputStream oos = new ObjectOutputStream(bos);
-    oos.writeObject(daten);
-    oos.writeObject(adressEintraegeNamen);
-    oos.flush();
-    oos.close();
-  }
-  
-  public void datenLesen(File datei) throws FileNotFoundException, IOException, ClassNotFoundException
-  {
-    FileInputStream fis = new FileInputStream(datei);
-    BufferedInputStream bis = new BufferedInputStream(fis);
-    ObjectInputStream ois = new ObjectInputStream(bis);
-    daten = (ArrayList<ArrayList<String>>)ois.readObject();
-    adressEintraegeNamen = (ArrayList<String>)ois.readObject();
-    adressEintraegeDaten = daten.get(daten.size()-1);
-    ois.close();
-    this.fireTableDataChanged();
-  }
-  
-}

src/controller/Controller.java

@@ -6,10 +6,13 @@
 
 package controller;
 
-import adressverwaltung.model.AdressverwaltungModel;
+import controller.commands.CommandAddRow;
+import controller.commands.CommandDeleteRow;
 import controller.commands.CommandOpen;
+import controller.commands.CommandSave;
 import java.awt.event.ActionEvent;
 import java.awt.event.ActionListener;
+import model.AdressverwaltungModel;
 import prfourgui.View.AdressbuchView;
 
 /**
@@ -32,16 +35,30 @@ public class Controller implements ActionListener
    */
   public void registerEvents(){
     view.getMnuOpen().addActionListener(this);
+    view.getToolAdd().addActionListener(this);
+    view.getToolRemove().addActionListener(this);
+    view.getMnuSave().addActionListener(this);
+    view.getAdressTable2().getDeleteItem().addActionListener(this);
+    view.getToolUndo().addActionListener(this);
   }
   
   public void registerCommands(){
     invoker.addCommand(view.getMnuOpen(), new CommandOpen(view, model));
+    invoker.addCommand(view.getToolAdd(), new CommandAddRow(view, model));
+    invoker.addCommand(view.getToolRemove(), new CommandDeleteRow(view, model));
+    invoker.addCommand(view.getMnuSave(), new CommandSave(view, model));
+    invoker.addCommand(view.getAdressTable2().getDeleteItem(), new CommandDeleteRow(view, model));
   }
   
   @Override
   public void actionPerformed(ActionEvent ae)
   {
     Object key = ae.getSource();
-    invoker.executeCommand(key);
+    if (key == view.getToolUndo()){
+        invoker.undo(key);
+    }
+    else{
+        invoker.executeCommand(key);
+    }
   }
 }

src/controller/ControllerOeffnen.java

@@ -1,45 +0,0 @@
-/*
- * To change this license header, choose License Headers in Project Properties.
- * To change this template file, choose Tools | Templates
- * and open the template in the editor.
- */
-
-package controller;
-
-import java.awt.event.ActionEvent;
-import java.awt.event.ActionListener;
-import java.io.File;
-import javax.swing.JFileChooser;
-import prfourgui.View.AdressbuchView;
-
-/**
- *
- * @author baumannan68085
- */
-public class ControllerOeffnen implements ActionListener
-{
-  private AdressbuchView view;
-  
-  public ControllerOeffnen(AdressbuchView view)
-  {
-    this.view = view;
-  }
-  
-  public void registerEvents(){
-    view.getMnuOpen().addActionListener(this);
-  }
-
-  @Override
-  public void actionPerformed(ActionEvent ae)
-  {
-    JFileChooser fc = view.getjFileChooser1();
-    int wahl = fc.showOpenDialog(view);
-    if(wahl == JFileChooser.APPROVE_OPTION){
-      File datei = fc.getSelectedFile();
-      String dateiname = datei.getAbsolutePath();
-      view.getTxtStatus().setText("Dateipfad:" + dateiname);
-      
-    }
-    
-  }
-}

src/controller/Invoker.java

@@ -7,6 +7,7 @@
 package controller;
 
 import java.util.HashMap;
+import java.util.Stack;
 
 /**
  *
@@ -15,10 +16,12 @@ import java.util.HashMap;
 public class Invoker
 {
   private HashMap<Object, Interface> commands;
+  private Stack commandHistory;
   
   public Invoker()
   {
     commands = new HashMap<>();
+    commandHistory = new Stack();
   }
   
   /**
@@ -31,6 +34,14 @@ public class Invoker
   }
   
   public void executeCommand(Object key){
+    commandHistory.push(key);
     commands.get(key).execute();
   }
+  
+  public void undo(Object key){
+      if (commandHistory.isEmpty()){
+          return;
+      }
+      commands.get(commandHistory.pop()).undo();
+  }
 }

src/controller/commands/CommandAddRow.java

@@ -0,0 +1,38 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+
+package controller.commands;
+
+import model.AdressverwaltungModel;
+import controller.Interface;
+import prfourgui.View.AdressbuchView;
+
+/**
+ *
+ * @author jechowma68968
+ */
+public class CommandAddRow implements Interface
+{
+  private final AdressbuchView view;
+  private final AdressverwaltungModel model;
+  
+  public CommandAddRow(AdressbuchView view, AdressverwaltungModel model)
+  {
+    this.view = view;
+    this.model = model;
+  }
+
+  @Override
+  public void execute()
+  {
+      model.eintragHinzufuegen();
+  }
+
+  @Override
+  public void undo()
+  {
+  }
+}

src/controller/commands/CommandDeleteRow.java

@@ -0,0 +1,59 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+
+package controller.commands;
+
+import model.AdressverwaltungModel;
+import controller.Interface;
+import java.util.Stack;
+import javax.swing.JOptionPane;
+import prfourgui.CommandDeleteRowDataContainer;
+import prfourgui.View.AdressbuchView;
+
+/**
+ *
+ * @author jechowma68968
+ */
+public class CommandDeleteRow implements Interface
+{
+  private final AdressbuchView view;
+  private final AdressverwaltungModel model;
+  private final Stack<CommandDeleteRowDataContainer> deleteHistory;
+  
+  
+  public CommandDeleteRow(AdressbuchView view, AdressverwaltungModel model)
+  {
+    this.view = view;
+    this.model = model;
+    this.deleteHistory = new Stack();
+  }
+
+  @Override
+  public void execute()
+  {
+      int rowCount = view.getAdressTable2().getTblAdressbuch().getSelectedRowCount();
+      if (rowCount != 1){
+        JOptionPane.showMessageDialog(view, "Genau eine Zeile auswählen zum löschen.", "Ein Satz mit x, das war wohl nox...", JOptionPane.INFORMATION_MESSAGE);
+      }
+      else{
+          int row = view.getAdressTable2().getTblAdressbuch().getSelectedRow();
+          deleteHistory.push(new CommandDeleteRowDataContainer(model.getValueAt(row, 0).toString(), model.getValueAt(row, 1).toString()));
+          model.eintragLoeschen(row);
+      }
+  }
+
+  @Override
+  public void undo()
+  {
+       CommandDeleteRowDataContainer c = deleteHistory.pop();
+       model.eintragHinzufuegen();
+       System.out.println(c.name);
+       System.out.println(c.telephone);
+       System.out.println(model.getRowCount());               
+       model.setValueAt(c.name, model.getRowCount()-1, 0);
+       model.setValueAt(c.telephone, model.getRowCount()-1, 1);
+  }
+}

src/controller/commands/CommandOpen.java

@@ -6,12 +6,13 @@
 
 package controller.commands;
 
-import adressverwaltung.model.AdressverwaltungModel;
+import model.AdressverwaltungModel;
 import controller.Interface;
 import java.io.File;
 import java.io.FileNotFoundException;
 import java.io.IOException;
 import javax.swing.JFileChooser;
+import prfourgui.Constants;
 import prfourgui.View.AdressbuchView;
 
 /**
@@ -32,8 +33,10 @@ public class CommandOpen implements Interface
   @Override
   public void execute()
   {
+    String default_file = model.getPref(Constants.PREF_KEY_DIR);
     File datei;
     JFileChooser fc = view.getjFileChooser1();
+    fc.setCurrentDirectory(new File(default_file));
     int wahl = fc.showOpenDialog(view);
     if(wahl == JFileChooser.APPROVE_OPTION){
       datei = fc.getSelectedFile();

src/controller/commands/CommandSave.java

@@ -0,0 +1,61 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+
+package controller.commands;
+
+import model.AdressverwaltungModel;
+import controller.Interface;
+import java.io.File;
+import java.io.FileNotFoundException;
+import java.io.IOException;
+import javax.swing.JFileChooser;
+import prfourgui.Constants;
+import prfourgui.View.AdressbuchView;
+
+/**
+ *
+ * @author jechowma68968
+ */
+public class CommandSave implements Interface
+{
+  private final AdressbuchView view;
+  private final AdressverwaltungModel model;
+  
+  public CommandSave(AdressbuchView view, AdressverwaltungModel model)
+  {
+    this.view = view;
+    this.model = model;
+  }
+
+  @Override
+  public void execute()
+  {
+    File datei;
+    JFileChooser fc = view.getjFileChooser1();
+    int wahl = fc.showOpenDialog(view);
+    if(wahl == JFileChooser.APPROVE_OPTION){
+      datei = fc.getSelectedFile();
+      String dateiname = datei.getAbsolutePath();
+      model.setPref(Constants.PREF_KEY_DIR, dateiname);
+      view.getTxtStatus().setText("Dateipfad:" + dateiname);
+      
+      try{
+        model.datenSpeichern(datei);
+      }
+      catch(FileNotFoundException e){
+        System.out.println("File not Found Error");
+      }
+      catch(IOException e){
+        System.out.println("Reading Error");
+      }
+    }
+  }
+
+  @Override
+  public void undo()
+  {
+  }
+}

src/prfourgui/CommandDeleteRowDataContainer.java

@@ -0,0 +1,20 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package prfourgui;
+
+/**
+ *
+ * @author marku
+ */
+public class CommandDeleteRowDataContainer {
+    public String name;
+    public String telephone;
+    
+    public CommandDeleteRowDataContainer(String name, String telephone){
+        this.name = name;
+        this.telephone = telephone;
+    }
+}

src/prfourgui/Constants.java

@@ -0,0 +1,14 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package prfourgui;
+
+/**
+ *
+ * @author marku
+ */
+public class Constants{
+    public static final String PREF_KEY_DIR = "PREF_KEY_DIR";
+}

src/prfourgui/Start.java

@@ -6,7 +6,7 @@
 
 package prfourgui;
 
-import adressverwaltung.model.AdressverwaltungModel;
+import model.AdressverwaltungModel;
 import controller.Controller;
 import prfourgui.View.AdressbuchView;
 

src/prfourgui/View/AdressTable.form

@@ -2,13 +2,13 @@
 
 <Form version="1.5" maxVersion="1.9" type="org.netbeans.modules.form.forminfo.JPanelFormInfo">
   <NonVisualComponents>
-    <Container class="javax.swing.JPopupMenu" name="jPopupMenu1">
+    <Container class="javax.swing.JPopupMenu" name="popupMenu">
 
       <Layout class="org.netbeans.modules.form.compat2.layouts.DesignAbsoluteLayout">
         <Property name="useNullLayout" type="boolean" value="true"/>
       </Layout>
       <SubComponents>
-        <MenuItem class="javax.swing.JMenuItem" name="jMenuItem1">
+        <MenuItem class="javax.swing.JMenuItem" name="deleteItem">
           <Properties>
             <Property name="icon" type="javax.swing.Icon" editor="org.netbeans.modules.form.editors2.IconEditor">
               <Image iconType="3" name="/prfourgui/Icons/Delete24.gif"/>
@@ -76,7 +76,7 @@
               </TableColumnModel>
             </Property>
             <Property name="componentPopupMenu" type="javax.swing.JPopupMenu" editor="org.netbeans.modules.form.ComponentChooserEditor">
-              <ComponentRef name="jPopupMenu1"/>
+              <ComponentRef name="popupMenu"/>
             </Property>
             <Property name="tableHeader" type="javax.swing.table.JTableHeader" editor="org.netbeans.modules.form.editors2.JTableHeaderEditor">
               <TableHeader reorderingAllowed="true" resizingAllowed="true"/>

src/prfourgui/View/AdressTable.java

@@ -41,45 +41,49 @@ public class AdressTable extends javax.swing.JPanel
    * regenerated by the Form Editor.
    */
   @SuppressWarnings("unchecked")
-  // <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents
-  private void initComponents()
-  {
+    // <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents
+    private void initComponents() {
 
-    jPopupMenu1 = new javax.swing.JPopupMenu();
-    jMenuItem1 = new javax.swing.JMenuItem();
-    jScrollPane1 = new javax.swing.JScrollPane();
-    tblAdressbuch = new javax.swing.JTable();
+        popupMenu = new javax.swing.JPopupMenu();
+        deleteItem = new javax.swing.JMenuItem();
+        jScrollPane1 = new javax.swing.JScrollPane();
+        tblAdressbuch = new javax.swing.JTable();
 
-    jMenuItem1.setIcon(new javax.swing.ImageIcon(getClass().getResource("/prfourgui/Icons/Delete24.gif"))); // NOI18N
-    jMenuItem1.setText("Remove");
-    jPopupMenu1.add(jMenuItem1);
+        deleteItem.setIcon(new javax.swing.ImageIcon(getClass().getResource("/prfourgui/Icons/Delete24.gif"))); // NOI18N
+        deleteItem.setText("Remove");
+        popupMenu.add(deleteItem);
 
-    setLayout(new javax.swing.BoxLayout(this, javax.swing.BoxLayout.LINE_AXIS));
+        setLayout(new javax.swing.BoxLayout(this, javax.swing.BoxLayout.LINE_AXIS));
 
-    tblAdressbuch.setModel(new javax.swing.table.DefaultTableModel(
-      new Object [][]
-      {
-        {null, null, null, null},
-        {null, null, null, null},
-        {null, null, null, null},
-        {null, null, null, null}
-      },
-      new String []
-      {
-        "Name", "Telefon", "Mobil", "E-Mail"
-      }
-    ));
-    tblAdressbuch.setComponentPopupMenu(jPopupMenu1);
-    jScrollPane1.setViewportView(tblAdressbuch);
+        tblAdressbuch.setModel(new javax.swing.table.DefaultTableModel(
+            new Object [][] {
+                {null, null, null, null},
+                {null, null, null, null},
+                {null, null, null, null},
+                {null, null, null, null}
+            },
+            new String [] {
+                "Name", "Telefon", "Mobil", "E-Mail"
+            }
+        ));
+        tblAdressbuch.setComponentPopupMenu(popupMenu);
+        jScrollPane1.setViewportView(tblAdressbuch);
 
-    add(jScrollPane1);
-  }// </editor-fold>//GEN-END:initComponents
+        add(jScrollPane1);
+    }// </editor-fold>//GEN-END:initComponents
 
 
-  // Variables declaration - do not modify//GEN-BEGIN:variables
-  private javax.swing.JMenuItem jMenuItem1;
-  private javax.swing.JPopupMenu jPopupMenu1;
-  private javax.swing.JScrollPane jScrollPane1;
-  private javax.swing.JTable tblAdressbuch;
-  // End of variables declaration//GEN-END:variables
+    // Variables declaration - do not modify//GEN-BEGIN:variables
+    private javax.swing.JMenuItem deleteItem;
+    private javax.swing.JScrollPane jScrollPane1;
+    private javax.swing.JPopupMenu popupMenu;
+    private javax.swing.JTable tblAdressbuch;
+    // End of variables declaration//GEN-END:variables
+
+    /**
+     * @return the deleteItem
+     */
+    public javax.swing.JMenuItem getDeleteItem() {
+        return deleteItem;
+    }
 }

src/prfourgui/View/AdressbuchView.form

@@ -109,6 +109,7 @@
             <Property name="icon" type="javax.swing.Icon" editor="org.netbeans.modules.form.editors2.IconEditor">
               <Image iconType="3" name="/prfourgui/Icons/Undo24.gif"/>
             </Property>
+            <Property name="toolTipText" type="java.lang.String" value="Undo"/>
             <Property name="focusable" type="boolean" value="false"/>
             <Property name="horizontalTextPosition" type="int" value="0"/>
             <Property name="verticalTextPosition" type="int" value="3"/>

src/prfourgui/View/AdressbuchView.java

@@ -12,6 +12,20 @@ package prfourgui.View;
 public class AdressbuchView extends javax.swing.JFrame
 {
 
+    /**
+     * @return the toolUndo
+     */
+    public javax.swing.JButton getToolUndo() {
+        return toolUndo;
+    }
+
+    /**
+     * @param toolUndo the toolUndo to set
+     */
+    public void setToolUndo(javax.swing.JButton toolUndo) {
+        this.toolUndo = toolUndo;
+    }
+
   /**
    * Creates new form AdressbuchView
    */
@@ -26,87 +40,85 @@ public class AdressbuchView extends javax.swing.JFrame
    * regenerated by the Form Editor.
    */
   @SuppressWarnings("unchecked")
-  // <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents
-  private void initComponents()
-  {
+    // <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents
+    private void initComponents() {
 
-    jFileChooser1 = new javax.swing.JFileChooser();
-    toolBar = new javax.swing.JToolBar();
-    toolAdd = new javax.swing.JButton();
-    toolRemove = new javax.swing.JButton();
-    toolUndo = new javax.swing.JButton();
-    adressTable2 = new prfourgui.View.AdressTable();
-    pnStatus = new javax.swing.JScrollPane();
-    txtStatus = new javax.swing.JTextArea();
-    mnuMain = new javax.swing.JMenuBar();
-    mnuDatei = new javax.swing.JMenu();
-    mnuOpen = new javax.swing.JMenuItem();
-    mnuSave = new javax.swing.JMenuItem();
+        jFileChooser1 = new javax.swing.JFileChooser();
+        toolBar = new javax.swing.JToolBar();
+        toolAdd = new javax.swing.JButton();
+        toolRemove = new javax.swing.JButton();
+        toolUndo = new javax.swing.JButton();
+        adressTable2 = new prfourgui.View.AdressTable();
+        pnStatus = new javax.swing.JScrollPane();
+        txtStatus = new javax.swing.JTextArea();
+        mnuMain = new javax.swing.JMenuBar();
+        mnuDatei = new javax.swing.JMenu();
+        mnuOpen = new javax.swing.JMenuItem();
+        mnuSave = new javax.swing.JMenuItem();
 
-    setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
+        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
 
-    toolBar.setRollover(true);
+        toolBar.setRollover(true);
 
-    toolAdd.setIcon(new javax.swing.ImageIcon(getClass().getResource("/prfourgui/Icons/New24.gif"))); // NOI18N
-    toolAdd.setMnemonic('A');
-    toolAdd.setToolTipText("Add Address");
-    toolAdd.setFocusable(false);
-    toolAdd.setHorizontalTextPosition(javax.swing.SwingConstants.CENTER);
-    toolAdd.setVerticalTextPosition(javax.swing.SwingConstants.BOTTOM);
-    toolBar.add(toolAdd);
+        toolAdd.setIcon(new javax.swing.ImageIcon(getClass().getResource("/prfourgui/Icons/New24.gif"))); // NOI18N
+        toolAdd.setMnemonic('A');
+        toolAdd.setToolTipText("Add Address");
+        toolAdd.setFocusable(false);
+        toolAdd.setHorizontalTextPosition(javax.swing.SwingConstants.CENTER);
+        toolAdd.setVerticalTextPosition(javax.swing.SwingConstants.BOTTOM);
+        toolBar.add(toolAdd);
 
-    toolRemove.setIcon(new javax.swing.ImageIcon(getClass().getResource("/prfourgui/Icons/Delete24.gif"))); // NOI18N
-    toolRemove.setMnemonic('R');
-    toolRemove.setToolTipText("Remove Address");
-    toolRemove.setFocusable(false);
-    toolRemove.setHorizontalTextPosition(javax.swing.SwingConstants.CENTER);
-    toolRemove.setVerticalTextPosition(javax.swing.SwingConstants.BOTTOM);
-    toolBar.add(toolRemove);
+        toolRemove.setIcon(new javax.swing.ImageIcon(getClass().getResource("/prfourgui/Icons/Delete24.gif"))); // NOI18N
+        toolRemove.setMnemonic('R');
+        toolRemove.setToolTipText("Remove Address");
+        toolRemove.setFocusable(false);
+        toolRemove.setHorizontalTextPosition(javax.swing.SwingConstants.CENTER);
+        toolRemove.setVerticalTextPosition(javax.swing.SwingConstants.BOTTOM);
+        toolBar.add(toolRemove);
 
-    toolUndo.setIcon(new javax.swing.ImageIcon(getClass().getResource("/prfourgui/Icons/Undo24.gif"))); // NOI18N
-    toolUndo.setFocusable(false);
-    toolUndo.setHorizontalTextPosition(javax.swing.SwingConstants.CENTER);
-    toolUndo.setVerticalTextPosition(javax.swing.SwingConstants.BOTTOM);
-    toolBar.add(toolUndo);
+        toolUndo.setIcon(new javax.swing.ImageIcon(getClass().getResource("/prfourgui/Icons/Undo24.gif"))); // NOI18N
+        toolUndo.setToolTipText("Undo");
+        toolUndo.setFocusable(false);
+        toolUndo.setHorizontalTextPosition(javax.swing.SwingConstants.CENTER);
+        toolUndo.setVerticalTextPosition(javax.swing.SwingConstants.BOTTOM);
+        toolBar.add(toolUndo);
 
-    getContentPane().add(toolBar, java.awt.BorderLayout.NORTH);
-    getContentPane().add(adressTable2, java.awt.BorderLayout.CENTER);
+        getContentPane().add(toolBar, java.awt.BorderLayout.NORTH);
+        getContentPane().add(adressTable2, java.awt.BorderLayout.CENTER);
 
-    txtStatus.setColumns(20);
-    txtStatus.setRows(5);
-    pnStatus.setViewportView(txtStatus);
+        txtStatus.setColumns(20);
+        txtStatus.setRows(5);
+        pnStatus.setViewportView(txtStatus);
 
-    getContentPane().add(pnStatus, java.awt.BorderLayout.PAGE_END);
+        getContentPane().add(pnStatus, java.awt.BorderLayout.PAGE_END);
 
-    mnuDatei.setMnemonic('D');
-    mnuDatei.setText("Datei");
+        mnuDatei.setMnemonic('D');
+        mnuDatei.setText("Datei");
 
-    mnuOpen.setAccelerator(javax.swing.KeyStroke.getKeyStroke(java.awt.event.KeyEvent.VK_O, java.awt.event.InputEvent.CTRL_MASK));
-    mnuOpen.setIcon(new javax.swing.ImageIcon(getClass().getResource("/prfourgui/Icons/Open24.gif"))); // NOI18N
-    mnuOpen.setMnemonic('O');
-    mnuOpen.setText("Open");
-    mnuOpen.addActionListener(new java.awt.event.ActionListener()
-    {
-      public void actionPerformed(java.awt.event.ActionEvent evt)
-      {
-        mnuOpenActionPerformed(evt);
-      }
-    });
-    mnuDatei.add(mnuOpen);
+        mnuOpen.setAccelerator(javax.swing.KeyStroke.getKeyStroke(java.awt.event.KeyEvent.VK_O, java.awt.event.InputEvent.CTRL_MASK));
+        mnuOpen.setIcon(new javax.swing.ImageIcon(getClass().getResource("/prfourgui/Icons/Open24.gif"))); // NOI18N
+        mnuOpen.setMnemonic('O');
+        mnuOpen.setText("Open");
+        mnuOpen.addActionListener(new java.awt.event.ActionListener() {
+            public void actionPerformed(java.awt.event.ActionEvent evt) {
+                mnuOpenActionPerformed(evt);
+            }
+        });
+        mnuDatei.add(mnuOpen);
 
-    mnuSave.setAccelerator(javax.swing.KeyStroke.getKeyStroke(java.awt.event.KeyEvent.VK_S, java.awt.event.InputEvent.CTRL_MASK));
-    mnuSave.setIcon(new javax.swing.ImageIcon(getClass().getResource("/prfourgui/Icons/Save24.gif"))); // NOI18N
-    mnuSave.setMnemonic('S');
-    mnuSave.setText("Save");
-    mnuSave.setToolTipText("");
-    mnuDatei.add(mnuSave);
+        mnuSave.setAccelerator(javax.swing.KeyStroke.getKeyStroke(java.awt.event.KeyEvent.VK_S, java.awt.event.InputEvent.CTRL_MASK));
+        mnuSave.setIcon(new javax.swing.ImageIcon(getClass().getResource("/prfourgui/Icons/Save24.gif"))); // NOI18N
+        mnuSave.setMnemonic('S');
+        mnuSave.setText("Save");
+        mnuSave.setToolTipText("");
+        mnuDatei.add(mnuSave);
 
-    mnuMain.add(mnuDatei);
+        mnuMain.add(mnuDatei);
 
-    setJMenuBar(mnuMain);
+        setJMenuBar(mnuMain);
 
-    pack();
-  }// </editor-fold>//GEN-END:initComponents
+        pack();
+    }// </editor-fold>//GEN-END:initComponents
 
   private void mnuOpenActionPerformed(java.awt.event.ActionEvent evt)//GEN-FIRST:event_mnuOpenActionPerformed
   {//GEN-HEADEREND:event_mnuOpenActionPerformed
@@ -162,20 +174,20 @@ public class AdressbuchView extends javax.swing.JFrame
     });
   }
 
-  // Variables declaration - do not modify//GEN-BEGIN:variables
-  private prfourgui.View.AdressTable adressTable2;
-  private javax.swing.JFileChooser jFileChooser1;
-  private javax.swing.JMenu mnuDatei;
-  private javax.swing.JMenuBar mnuMain;
-  private javax.swing.JMenuItem mnuOpen;
-  private javax.swing.JMenuItem mnuSave;
-  private javax.swing.JScrollPane pnStatus;
-  private javax.swing.JButton toolAdd;
-  private javax.swing.JToolBar toolBar;
-  private javax.swing.JButton toolRemove;
-  private javax.swing.JButton toolUndo;
-  private javax.swing.JTextArea txtStatus;
-  // End of variables declaration//GEN-END:variables
+    // Variables declaration - do not modify//GEN-BEGIN:variables
+    private prfourgui.View.AdressTable adressTable2;
+    private javax.swing.JFileChooser jFileChooser1;
+    private javax.swing.JMenu mnuDatei;
+    private javax.swing.JMenuBar mnuMain;
+    private javax.swing.JMenuItem mnuOpen;
+    private javax.swing.JMenuItem mnuSave;
+    private javax.swing.JScrollPane pnStatus;
+    private javax.swing.JButton toolAdd;
+    private javax.swing.JToolBar toolBar;
+    private javax.swing.JButton toolRemove;
+    private javax.swing.JButton toolUndo;
+    private javax.swing.JTextArea txtStatus;
+    // End of variables declaration//GEN-END:variables
 
   /**
    * @return the mnuOpen