JDialog: Repaint does not work as wanted when called a second time
Hi,
I have created a JDialog with a More/Less Details button which, when invoked, shows or not shows a JScrollPane with a JEditorPane and resizes the dialog window to make space for that extra component or to take away that space.
It works fine thefirst time I invoke the JDialog (see main method). But if I invoke it a second time and want to see the details the details JScrollPane is not fully shown.
I have experimented with repaint and revalidate on different panels but to no avail.
I am quite new to Swing, what am I misunderstanding? Is my Close-button not tidying up properly?
import javax.swing.*;
import javax.swing.border.*;
import java.awt.event.*;
import javax.swing.event.*;
import java.awt.*;
class Testerextends JDialog{
privatestaticint totalWidth = 200;
privatestaticint totalHeight = 100;
privatestaticint detailsPanelHeight = 200;
public Tester(){
super();
}
publicstaticint createAndShowGUI(){
Tester td =new Tester();
return td.doGUI();
}
publicint doGUI(){
//Create and set up the window.
setPreferredSize(new Dimension(totalWidth, totalHeight+detailsPanelHeight));
setModal(true);
setResizable(false);
setTitle("Tester");
setAlwaysOnTop(true);
final Container mainPane = getContentPane();
mainPane.setLayout(new FlowLayout());
// *** Panel for details
final JEditorPane detailsText =new JEditorPane("text/html","<HTML>Some <i>html</i>.</HTML>");
final JScrollPane detailsPanel =new JScrollPane(detailsText);
detailsPanel.setBorder(new TitledBorder("Details"));
detailsText.setEditable(false);
detailsPanel.setPreferredSize(new Dimension(totalWidth-100, detailsPanelHeight));
detailsPanel.setVisible(false);
// *** Panel for Info
final JToggleButton detailsBtn =new JToggleButton("More Details");
detailsBtn.addActionListener(new ActionListener(){
publicvoid actionPerformed(ActionEvent e){
if (detailsBtn.isSelected()){
detailsBtn.setText("Less Details");
detailsBtn.repaint();
detailsPanel.setVisible(true);
setBounds(getX(), getY(),
getWidth(), getHeight()+detailsPanelHeight);
// Also tried detailsPanel.revalidate(), mainPane.revalidate/repaint()
// to no avail
detailsPanel.repaint();
}
else{
detailsBtn.setText("More Details");
detailsBtn.repaint();
detailsPanel.setVisible(false);
setBounds(getX(), getY(),
getWidth(), getHeight()-detailsPanelHeight);
detailsPanel.repaint();
}
}
});
// *** Panel for buttons
JPanel btnPanel =new JPanel();
mainPane.add(btnPanel);
mainPane.add(detailsPanel);
// Allow Button
JButton allowBtn =new JButton("Close");
allowBtn.addActionListener(new ActionListener(){
publicvoid actionPerformed(ActionEvent e){
setVisible(false);
dispose();
}
});
btnPanel.add(allowBtn);
btnPanel.add(detailsBtn);
//Display the window.
pack();
setBounds(getX(), getY(), totalWidth, totalHeight);
setVisible(true);
return 1;
}
publicstaticvoid main(String[] args){
javax.swing.SwingUtilities.invokeLater(new Runnable(){
publicvoid run(){
// Run once and you can see details in nice window
System.err.println(Tester.createAndShowGUI());
// Run twice and switching on details shows an empty space
System.err.println(Tester.createAndShowGUI());
}
});
}
}
