Problem with scroll tab layout in JtabbedPane

Question

Pls. if anyone know this, help me
I have a problem, my scroll tab layout policy does not working when I set it to UI.
import javax.swing.*;
import javax.swing.plaf.basic.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.event.*;
import javax.swing.plaf.*;
public class Components_Area extends JFrame{
     JTabbedPane tab = new JTabbedPane(JTabbedPane.TOP,JTabbedPane.SCROLL_TAB_LAYOUT);
     JLabel l[] = new JLabel[5];
    public Components_Area() {
          tab.setUI(new TestPlaf());
          tab.addTab("Untitled",l[0]);
          tab.addTab("Untitled",l[1]);
          tab.addTab("Untitled",l[2]);
          tab.addTab("Untitled",l[3]);
          tab.addTab("Untitled",l[4]);
          getContentPane().add(tab);
    public static void main(String args []) {
         Components_Area frame = new Components_Area();
         frame.setSize(200,200);
         frame.show();
     static class TestPlaf extends BasicTabbedPaneUI {
          protected LayoutManager createLayoutManager() {
               return new TestPlafLayout();
          protected Insets getTabInsets(int tabPlacement,int tabIndex) {               
               Insets defaultInsets = (Insets)super.getTabInsets(tabPlacement,tabIndex).clone();
               defaultInsets.right += 50;
               defaultInsets.top += 2;                
               return defaultInsets;
          class TestPlafLayout extends TabbedPaneLayout {
               //a list of our close buttons
               java.util.ArrayList closeButtons = new java.util.ArrayList();
               public void layoutContainer(Container parent) {
                    super.layoutContainer(parent);
                    //ensure that there are at least as many close buttons as tabs
                    while(tabPane.getTabCount() > closeButtons.size()) {
                         closeButtons.add(new CloseButton(closeButtons.size()));
                    tabPane.setTabLayoutPolicy(JTabbedPane.SCROLL_TAB_LAYOUT);
                    Rectangle rect = new Rectangle();
                    int i;
                    for(i = 0; i < tabPane.getTabCount();i++) {
                         rect = getTabBounds(i,rect);
                         JButton closeButton = (JButton)closeButtons.get(i);
                         //shift the close button 3 down from the top of the pane and 20 to the left
                         closeButton.setLocation(rect.x+rect.width-20,rect.y+4);
                         closeButton.setSize(15,15);
                         tabPane.add(closeButton);
                    for(;i < closeButtons.size();i++) {
                         //remove any extra close buttons
                         tabPane.remove((JButton)closeButtons.get(i));
               // implement UIResource so that when we add this button to the 
               // tabbedpane, it doesn't try to make a tab for it!
               class CloseButton extends JButton implements javax.swing.plaf.UIResource {
                    public CloseButton(int index) {
                         super(new CloseButtonAction(index));
                         setBorder( BorderFactory.createEmptyBorder() );
                    setToolTipText("Close this tab");
                         //remove the typical padding for the button
                         setMargin(new Insets(0,0,0,0));
                    addMouseListener(new MouseAdapter() {
                              public void mouseEntered(MouseEvent e) {                           
                               setBorder( BorderFactory.createLineBorder(Color.black, 1 ));
                             public void mouseExited(MouseEvent e) {                                
                                  setBorder( BorderFactory.createEmptyBorder() );
               class CloseButtonAction extends AbstractAction {
                    int index;
                    public CloseButtonAction(int index)     {
                         super("x");
                         this.index = index;
                    public void actionPerformed(ActionEvent e) {
                         tabPane.remove(index);
}     Message was edited by:
henyo

Answer 1

If someone knows this, help me!