ScrollBar dans JCombobox Personnalisé

la liste a gauche c'est la list du jcombobox ... et comme vous voyer elle n'est pas scrollable... et d'ailleur je ne sais pas le problem est ce que c'est dans la jcombobox ou dans le jpopumenu. voila mon code source

Code:

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/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
 
package de.jugms.sd.components.comboboxes;
 
/**
 *
 * @author hansolo
 */
public class SDComboBox extends javax.swing.JComboBox
{
    private de.jugms.sd.tools.RadiusType radiusType;    
 
    public SDComboBox()
    {
        super();        
        editor = new de.jugms.sd.components.comboboxes.SDComboBoxEditor();        
        setUI(new de.jugms.sd.ui.SDComboBoxUI(this));
        setPreferredSize(new java.awt.Dimension(150, 22));
        this.radiusType = de.jugms.sd.tools.RadiusType.ROUNDED;
    }
 
    public SDComboBox(javax.swing.ComboBoxModel model)
    {
        super(model);
        editor = new de.jugms.sd.components.comboboxes.SDComboBoxEditor();
        setUI(new de.jugms.sd.ui.SDComboBoxUI(this));
        setPreferredSize(new java.awt.Dimension(150, 22));
        this.radiusType = de.jugms.sd.tools.RadiusType.ROUNDED;
    }
 
    public SDComboBox(Object[] items)
    {
        super(items);
        editor = new de.jugms.sd.components.comboboxes.SDComboBoxEditor();
        setUI(new de.jugms.sd.ui.SDComboBoxUI(this));
        setPreferredSize(new java.awt.Dimension(150, 22));
        this.radiusType = de.jugms.sd.tools.RadiusType.ROUNDED;
    }
 
    public SDComboBox(java.util.Vector<?> items)
    {
        super(items);
        editor = new de.jugms.sd.components.comboboxes.SDComboBoxEditor();
        setUI(new de.jugms.sd.ui.SDComboBoxUI(this));
        setPreferredSize(new java.awt.Dimension(150, 22));
        this.radiusType = de.jugms.sd.tools.RadiusType.ROUNDED;
    }
 
    @Override
    public void setEditable(boolean editable)
    {
        super.setEditable(editable);
    }
 
    public void setRadiusType(de.jugms.sd.tools.RadiusType radiusType)
    {
        this.radiusType = radiusType;
        ((de.jugms.sd.components.comboboxes.SDComboBoxEditor) getEditor()).setRadiusType(radiusType);
        ((de.jugms.sd.ui.SDComboBoxUI) getUI()).getArrowButton().setRadiusType(radiusType);
        ((de.jugms.sd.components.comboboxes.SDComboBoxCellRenderer) getRenderer()).setRadiusType(radiusType);
    }
 
    public de.jugms.sd.tools.RadiusType getRadiusType()
    {
        return this.radiusType;
    }
 
    @Override
    public String toString()
    {
        return "SDComboBox";
    }
}

Code:

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/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package de.jugms.sd.components.comboboxes;
 
import java.awt.event.ActionListener;
 
import javax.swing.JScrollPane;
import javax.swing.plaf.basic.BasicComboPopup;
 
 
/**
 *
 * @author hansolo
 */
public class SDComboPopup extends BasicComboPopup implements ActionListener
{
    private javax.swing.JPopupMenu popupMenu = new javax.swing.JPopupMenu();
    private static final int LEFT_SHIFT = 22;
 
    public SDComboPopup(javax.swing.JComboBox combo)
    {
        super(combo);        
        popupMenu.setUI(new de.jugms.sd.ui.SDPopupMenuUI());
        this.comboBox = combo;
        comboBox.addActionListener(this);
    }
 
    private void clearAndFillMenu()
    {
 
        popupMenu.removeAll();
 
        javax.swing.ButtonGroup buttonGroup = new javax.swing.ButtonGroup();
 
        // add the given items to the popup menu.
        for (int i = 0; i < comboBox.getModel().getSize(); i++)
        {
            Object item = comboBox.getModel().getElementAt(i);
            de.jugms.sd.components.misc.SDMenuItem menuItem = new de.jugms.sd.components.misc.SDMenuItem(item.toString());
            menuItem.addActionListener(createMenuItemListener(item));                        
            buttonGroup.add(menuItem);
            popupMenu.add(menuItem);
 
            // if the current item is selected, make the menu item reflect that.
            if (item.equals(comboBox.getModel().getSelectedItem()))
            {
                menuItem.setSelected(true);
                popupMenu.setSelected(menuItem);
            }
        }
 
        popupMenu.pack();
        int popupWidth = comboBox.getWidth() + 5;
        int popupHeight = popupMenu.getPreferredSize().height;
        popupMenu.setPreferredSize(new java.awt.Dimension(popupWidth, popupHeight));
    }
 
    private java.awt.event.ActionListener createMenuItemListener(final Object comboBoxItem)
    {
        return new java.awt.event.ActionListener()
        {
            @Override
            public void actionPerformed(java.awt.event.ActionEvent event)
            {
                comboBox.setSelectedItem(comboBoxItem);
            }
        };
    }
 
    @Override
    public void show()
    {
        clearAndFillMenu();
        java.awt.Rectangle popupBounds = calculateInitialPopupBounds();
 
        popupMenu.show(comboBox, popupBounds.x, popupBounds.y);
    }
 
    @Override
    public void hide()
    {
        popupMenu.setVisible(false);
    }
 
    @Override
    public boolean isVisible()
    {
        return popupMenu.isVisible();
    }
 
    private java.awt.Rectangle calculateInitialPopupBounds()
    {
        // grab the right most location of the button.
        int comboBoxRightEdge = comboBox.getWidth();
 
        // figure out how the height of a menu item.
        java.awt.Insets insets = popupMenu.getInsets();
 
        // calculate the x and y value at which to place the popup menu. by
        // default, this will place the selected menu item in the popup item
        // directly over the button.
        int x = comboBoxRightEdge - popupMenu.getPreferredSize().width - LEFT_SHIFT;
        int selectedItemIndex = popupMenu.getSelectionModel().getSelectedIndex();        
        int componentCenter = comboBox.getHeight() / 2;        
        int menuItemHeight = popupMenu.getComponent(selectedItemIndex).getPreferredSize().height;
        int menuItemCenter = insets.top + (selectedItemIndex * menuItemHeight) + menuItemHeight / 2;
        int y = componentCenter - menuItemCenter;
 
        return new java.awt.Rectangle(new java.awt.Point(x, y), popupMenu.getPreferredSize());
    }
 
    @Override
    public void actionPerformed(java.awt.event.ActionEvent event)
    {
        int popupWidth;
        int popupHeight;
 
        switch (comboBox.getSelectedIndex())
        {
            case -1:
                comboBox.addItem(comboBox.getSelectedItem().toString());
                popupWidth = comboBox.getWidth() + 5;
                popupHeight = popupMenu.getSize().height + popupMenu.getSubElements()[0].getComponent().getHeight();
                popupMenu.setPreferredSize(new java.awt.Dimension(popupWidth, popupHeight));
                break;
            default:
                if (comboBox.getSelectedItem().toString().isEmpty())
                {
                    comboBox.removeItemAt(comboBox.getSelectedIndex());
                    popupWidth = comboBox.getWidth() + 5;
                    popupHeight = popupMenu.getSize().height + popupMenu.getSubElements()[0].getComponent().getHeight();
                    popupMenu.setPreferredSize(new java.awt.Dimension(popupWidth, popupHeight));
                }
                break;
        }
    }
 
    @Override
    public String toString()
    {
        return "SDComboPopup";
    }
}

Code:

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/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package de.jugms.sd.ui;
 
import de.jugms.sd.components.comboboxes.SDComboBoxCellRenderer;
import de.jugms.sd.components.comboboxes.SDComboBoxEditor;
 
 
/**
 *
 * @author hansolo
 */
public class SDComboBoxUI extends javax.swing.plaf.basic.BasicComboBoxUI implements javax.swing.SwingConstants
{
    private de.jugms.sd.tools.RadiusType radiusType;    
    de.jugms.sd.components.buttons.SDArrowButton button;
 
    public SDComboBoxUI(javax.swing.JComboBox comboBox)
    {
        super();
        super.comboBox = comboBox;
 
        comboBox.setOpaque(false);
        comboBox.setForeground(new java.awt.Color(1.0f, 1.0f, 1.0f, 0.6f));
        comboBox.setFont(new java.awt.Font("Verdana", 0, 12));
        this.radiusType = de.jugms.sd.tools.RadiusType.ROUNDED;
 
        if (comboBox.isEditable())
        {
            comboBox.setEditor(new SDComboBoxEditor());
        }
        else
        {            
            comboBox.setRenderer(new SDComboBoxCellRenderer(comboBox));
        }
    }
 
    public de.jugms.sd.components.buttons.SDArrowButton getArrowButton()
    {
        return this.button;
    }
 
    @Override
    protected javax.swing.plaf.basic.ComboPopup createPopup()
    {
        popup = new de.jugms.sd.components.comboboxes.SDComboPopup(comboBox);        
        return popup;
    }
 
    @Override
    protected javax.swing.JButton createArrowButton()
    {
        button = new de.jugms.sd.components.buttons.SDArrowButton(SOUTH, EAST);
        button.setRadiusType(this.radiusType);
        button.setName("ComboBox.arrowButton");
        return button;
    }
 
    public void setRadiusType(de.jugms.sd.tools.RadiusType radiusType)
    {
        this.radiusType = radiusType;
    }
 
    public de.jugms.sd.tools.RadiusType getRadiusType()
    {
        return this.radiusType;
    }
 
    @Override
    public String toString()
    {
        return "SDComboBoxUI";
    }
}