import java.awt.BorderLayout;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.*;
import org.jvnet.substance.SubstanceLookAndFeel;
/**
* Test application that shows the use of the
* {@link SubstanceLookAndFeel#permanentlyHideHeapStatusPanel(JRootPane)} and
* {@link SubstanceLookAndFeel#permanentlyShowHeapStatusPanel(JRootPane)} API.
*
* @author Kirill Grouchnikov
* @see SubstanceLookAndFeel#permanentlyHideHeapStatusPanel(JRootPane)
* @see SubstanceLookAndFeel#permanentlyShowHeapStatusPanel(JRootPane)
*/
public class PermanentlyHideShowHeapStatusPanel extends JFrame {
/**
* Creates the main frame for <code>this</code> sample.
*/
public PermanentlyHideShowHeapStatusPanel() {
super("Permanently hide / show heap status panel");
this.setLayout(new BorderLayout());
JPanel controls = new JPanel(new FlowLayout(FlowLayout.RIGHT));
controls.add(new JLabel("Permanent status of heap status panel"));
final JButton permanentlyShow = new JButton("Show");
final JButton permanentlyHide = new JButton("Hide");
permanentlyHide.setEnabled(false);
permanentlyShow.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
SubstanceLookAndFeel
.permanentlyShowHeapStatusPanel(getRootPane());
permanentlyShow.setEnabled(false);
permanentlyHide.setEnabled(true);
}
});
permanentlyHide.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
SubstanceLookAndFeel
.permanentlyHideHeapStatusPanel(getRootPane());
permanentlyHide.setEnabled(false);
permanentlyShow.setEnabled(true);
}
});
controls.add(permanentlyShow);
controls.add(permanentlyHide);
this.add(controls, BorderLayout.SOUTH);
this.setSize(400, 200);
this.setLocationRelativeTo(null);
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
/**
* The main method for <code>this</code> sample. The arguments are
* ignored.
*
* @param args
* Ignored.
* @throws Exception
* If some exception occured. Note that there is no special
* treatment of exception conditions in <code>this</code>
* sample code.
*/
public static void main(String[] args) throws Exception {
if (System.getProperty("substancelaf.heapStatusPanel") == null) {
System.err
.println("Please run with -Dsubstancelaf.heapStatusPanel");
System.exit(-1);
}
UIManager.setLookAndFeel(new SubstanceLookAndFeel());
JFrame.setDefaultLookAndFeelDecorated(true);
SwingUtilities.invokeLater(new Runnable() {
public void run() {
new PermanentlyHideShowHeapStatusPanel().setVisible(true);
}
});
}
}
The screenshot below shows application frame run under
-Dsubstancelaf.heapStatusPanel VM flag
when this API is not called. Note the menu item entry in the application (system)
menu that allows toggling the heap status panel:
The screenshot below shows application frame run under
-Dsubstancelaf.heapStatusPanel VM flag
after this API has not called. Note that the above-mentioned menu item is gone
and the heap status panel is not showing:
|