TDialog.java Source code

Introduction

Here is the source code for TDialog.java

Source

//   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;
    }
}