/** Install Add and Remove Buttons into the toolbar */
  private void installAddRemovePointButtons() {
    URL imgURL = ClassLoader.getSystemResource("ch/tbe/pics/plus.gif");
    ImageIcon plus = new ImageIcon(imgURL);
    imgURL = ClassLoader.getSystemResource("ch/tbe/pics/minus.gif");
    ImageIcon minus = new ImageIcon(imgURL);
    add = new JButton(plus);
    rem = new JButton(minus);
    add.setToolTipText(workingViewLabels.getString("plus"));
    rem.setToolTipText(workingViewLabels.getString("minus"));
    add.addActionListener(
        new ActionListener() {
          public void actionPerformed(ActionEvent e) {
            WorkingView.this.addRemovePoint(true);
          }
        });
    rem.addActionListener(
        new ActionListener() {
          public void actionPerformed(ActionEvent e) {
            WorkingView.this.addRemovePoint(false);
          }
        });

    add.setContentAreaFilled(false);
    add.setBorderPainted(false);
    rem.setContentAreaFilled(false);
    rem.setBorderPainted(false);
    toolbar.add(add);
    toolbar.add(rem);
  }
  /**
   * Installs a Tool in the Toolbar
   *
   * @param toolbar as JToolbar
   * @param tool, Tool to install
   */
  public void installToolInToolBar(JToolBar toolbar, final Tool tool) {
    final JButton button;
    button = new JButton();

    button.setMargin(new Insets(0, 0, 0, 0));

    if (tool.getItemType() != null) {
      button.setIcon(tool.getItemType().getIcon());
      button.setToolTipText(tool.getItemType().getDescription());

    } else {
      button.setText("Tool"); // For Debugging
    }
    toolbar.add(button);
    toolButtons.add(button);
    button.addActionListener(
        new ActionListener() {
          public void actionPerformed(ActionEvent e) {
            WorkingView.this.setTool(tool, button);
          }
        });
    button.setContentAreaFilled(false);
    button.setBorderPainted(false);
    button.addMouseListener(
        new MouseAdapter() {
          public void mouseEntered(MouseEvent e) {
            ((JButton) e.getSource()).setBorderPainted(true);
          }

          public void mouseExited(MouseEvent e) {
            ((JButton) e.getSource()).setBorderPainted(false);
          }
        });
  }
  /** Install the Rotate-Button into the toolbar */
  private void installRotateButton() {
    URL imgURL = ClassLoader.getSystemResource("ch/tbe/pics/rotate.gif");
    ImageIcon rotateIcon = new ImageIcon(imgURL);
    rotate = new JButton(rotateIcon);
    rotate.setEnabled(false);
    rotatePanel = new JToolBar();
    rotatePanel.setOrientation(1);
    rotatePanel.setLayout(new BorderLayout(0, 1));
    rotateSlider = new JSlider();
    rotateSlider.setMaximum(359);
    rotateSlider.setMinimum(0);
    rotateSlider.setMaximumSize(new Dimension(100, 100));
    rotateSlider.setOrientation(1);
    Box box = Box.createVerticalBox();

    sliderValue.setPreferredSize(new Dimension(30, 20));

    rotateSlider.setAlignmentY(Component.TOP_ALIGNMENT);
    box.add(sliderValue);
    box.add(rotateSlider);
    sliderValue.setAlignmentY(Component.TOP_ALIGNMENT);
    rotatePanel.add(box, BorderLayout.NORTH);

    sliderValue.addFocusListener(
        new FocusListener() {

          private int oldValue = 0;

          public void focusGained(FocusEvent arg0) {
            oldValue = Integer.parseInt(sliderValue.getText());
          }

          public void focusLost(FocusEvent arg0) {
            int newValue = 0;
            try {
              newValue = Integer.parseInt(sliderValue.getText());
            } catch (Exception ex) {
              sliderValue.setText(Integer.toString(oldValue));
            }
            if (newValue >= 0 && newValue <= 359) {

              RotateCommand rc = new RotateCommand(board.getSelectedItems());
              ArrayList<Command> actCommands = new ArrayList<Command>();
              actCommands.add(rc);
              TBE.getInstance().addCommands(actCommands);
              rotateSlider.setValue(newValue);
            } else {
              sliderValue.setText(Integer.toString(oldValue));
            }
          }
        });

    rotateSlider.addChangeListener(
        new ChangeListener() {

          public void stateChanged(ChangeEvent arg0) {

            if (board.getSelectionCount() == 1
                && board.getSelectionCells()[0] instanceof ShapeItem) {
              sliderValue.setText(Integer.toString(rotateSlider.getValue()));
              ShapeItem s = (ShapeItem) board.getSelectionCells()[0];
              board.removeItem(new ItemComponent[] {s});
              s.setRotation(rotateSlider.getValue());
              board.addItem(s);
            }
          }
        });
    rotateSlider.addMouseListener(
        new MouseAdapter() {

          private int value;

          public void mousePressed(MouseEvent e) {
            value = rotateSlider.getValue();
          }

          public void mouseReleased(MouseEvent e) {
            if (value != rotateSlider.getValue()) {
              RotateCommand rc = new RotateCommand(board.getSelectedItems());
              ArrayList<Command> actCommands = new ArrayList<Command>();
              actCommands.add(rc);
              TBE.getInstance().addCommands(actCommands);
              rc.setRotation(value);
            }
          }
        });

    rotate.setToolTipText(workingViewLabels.getString("rotate"));

    rotate.addActionListener(
        new ActionListener() {
          public void actionPerformed(ActionEvent e) {
            if (board.getSelectionCount() == 1
                && board.getSelectedItems()[0] instanceof ShapeItem) {
              rotateSlider.setValue(((ShapeItem) board.getSelectedItems()[0]).getRotation());
            }
            rotatePanel.setVisible(!rotatePanel.isVisible());
            showRotate = !showRotate;
          }
        });

    rotate.setContentAreaFilled(false);
    rotate.setBorderPainted(false);
    toolbar.add(rotate);
    rotatePanel.setVisible(false);
    this.add(rotatePanel, BorderLayout.EAST);
  }