Dialog can be closed by pressing the escape key
// TDialog
// Copyright (C) by Andrea Carboni.
// This file may be distributed under the terms of the LGPL license.
//
import java.awt.Frame;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import javax.swing.JComponent;
import javax.swing.JDialog;
import javax.swing.JRootPane;
import javax.swing.KeyStroke;
/** This dialog can be closed by pressing the escape key
*/
public class TDialog extends JDialog
{
private boolean bCancel;
//---------------------------------------------------------------------------
public TDialog(Frame f, String title, boolean modal)
{
super(f, title, modal);
bCancel = false;
addWindowListener(new WindowAdapter()
{
public void windowClosing(WindowEvent e)
{
bCancel = true;
}
}
);
}
//---------------------------------------------------------------------------
protected JRootPane createRootPane()
{
ActionListener al = new ActionListener()
{
public void actionPerformed(ActionEvent ae)
{
hide();
bCancel = true;
}
};
KeyStroke stroke = KeyStroke.getKeyStroke(KeyEvent.VK_ESCAPE, 0);
JRootPane rootPane = super.createRootPane();
rootPane.registerKeyboardAction(al, stroke, JComponent.WHEN_IN_FOCUSED_WINDOW);
return rootPane;
}
//---------------------------------------------------------------------------
/** Packs the dialog, centers it on its parent, shows it and disposes it on exit
*/
public void showDialog()
{
bCancel = false;
pack();
setLocationRelativeTo(getParent());
show();
}
//---------------------------------------------------------------------------
public void setCancelled()
{
bCancel = true;
}
//---------------------------------------------------------------------------
public void clearCancelled()
{
bCancel = false;
}
//---------------------------------------------------------------------------
public boolean isCancelled()
{
return bCancel;
}
}
Related examples in the same category
