Name: skT45625 Date: 08/15/2000


java version "1.2.2"
Classic VM (build JDK-1.2.2-001, native threads, symcjit)

After adding some tabs to a TabbedPane, a call to getTabRunCount() returns the
same value as a previous call ( before adding), even if the added tabs must be
(and are) placed on multiple lines. The JDK1.2.2 docs states that
getTabRunCount() returns the number of rows/columns or 0 if there is no UI set.
      The correct value is returned if getTabRunCount() is called some time
after the adding.

       The following application demonstrates this:

import javax.swing.*;
import java.awt.event.*;

public class PaneTest implements WindowListener{
    static JFrame frame;
    static public void main( String args[]) {
        frame= new JFrame("tst");
        
        frame.setBounds( 100,100,300,300);
        frame.addWindowListener( new PaneTest());
        
        JTabbedPane pane= new JTabbedPane();
        JButton b1= new JButton("button one");
        JButton b2= new JButton("button two");
        JButton b3= new JButton("button three");
        
        pane.add( "one 1111111111111111", b1);
        System.out.println("the UI is set (not null): "+ pane.getUI());
        System.out.println("No. of rows: " +pane.getTabRunCount() +" <-
should be 1 row");
        
        frame.getContentPane().add( pane);
        frame.show();

        System.out.println("No. of rows: "+ pane.getTabRunCount() +" <-
there is 1 row");
        pane.add( "two 2222222222222222222222", b2);
        pane.add( "three 3333333333333333333333", b3);


//***************************************************
// A possible workaround
//
// pane.validate();
//
//***************************************************

        System.out.println("No. of rows: "+ pane.getTabRunCount() +" <-
should be 3 rows");
        System.out.println("the UI is set (not null): "+ pane.getUI());
     }
     
    public void windowActivated(WindowEvent e) {
  }

  public void windowClosed(WindowEvent e) {
  }
  
  public void windowClosing(WindowEvent e) {
    frame.dispose();
    System.exit( 0);
  }

  public void windowDeactivated(WindowEvent e) {
  }

  public void windowDeiconified(WindowEvent e) {
  }import javax.swing.*;
import java.awt.event.*;

public class PaneTest implements WindowListener{
    static JFrame frame;
    static public void main( String args[]) {
        frame= new JFrame("tst");
        
        frame.setBounds( 100,100,300,300);
        frame.addWindowListener( new PaneTest());
        
        JTabbedPane pane= new JTabbedPane();
        JButton b1= new JButton("button one");
        JButton b2= new JButton("button two");
        JButton b3= new JButton("button three");
        
        pane.add( "one 1111111111111111", b1);
        System.out.println("the UI is set (not null): "+ pane.getUI());
        System.out.println("No. of rows: " +pane.getTabRunCount() +" <-
should be 1 row");
        
        frame.getContentPane().add( pane);
        frame.show();

        System.out.println("No. of rows: "+ pane.getTabRunCount() +" <-
there is 1 row");
        pane.add( "two 2222222222222222222222", b2);
        pane.add( "three 3333333333333333333333", b3);


//***************************************************
// A possible workaround
//
// pane.validate();
//
//***************************************************

        System.out.println("No. of rows: "+ pane.getTabRunCount() +" <-
should be 3 rows");
        System.out.println("the UI is set (not null): "+ pane.getUI());
     }
     
    public void windowActivated(WindowEvent e) {
  }

  public void windowClosed(WindowEvent e) {
  }
  
  public void windowClosing(WindowEvent e) {
    frame.dispose();
    System.exit( 0);
  }


  public void windowIconified(WindowEvent e) {
  }

  public void windowOpened(WindowEvent e) {
  }
}
(Review ID: 108450)
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