private static JSheet createSheet(final JOptionPane pane, Component parentComponent, int style) {
Window window = getWindowForComponent(parentComponent);
final JSheet sheet;
if (window instanceof Frame) {
sheet = new JSheet((Frame) window);
} else {
sheet = new JSheet((Dialog) window);
}
JComponent contentPane = (JComponent) sheet.getContentPane();
contentPane.setLayout(new BorderLayout());
if (isNativeSheetSupported()) {
contentPane.setBorder(new EmptyBorder(12, 0, 0, 0));
}
contentPane.add(pane, BorderLayout.CENTER);
sheet.setResizable(false);
sheet.addWindowListener(
new WindowAdapter() {
private boolean gotFocus = false;
@Override
public void windowClosing(WindowEvent we) {
pane.setValue(null);
}
@Override
public void windowClosed(WindowEvent we) {
if (pane.getValue() == JOptionPane.UNINITIALIZED_VALUE) {
sheet.fireOptionSelected(pane);
}
}
@Override
public void windowGainedFocus(WindowEvent we) {
// Once window gets focus, set initial focus
if (!gotFocus) {
// Ugly dirty hack: JOptionPane.selectInitialValue() is protected.
// So we call directly into the UI. This may cause mayhem,
// because we override the encapsulation.
// pane.selectInitialValue();
OptionPaneUI ui = pane.getUI();
if (ui != null) {
ui.selectInitialValue(pane);
}
gotFocus = true;
}
}
});
sheet.addComponentListener(
new ComponentAdapter() {
@Override
public void componentShown(ComponentEvent ce) {
// reset value to ensure closing works properly
pane.setValue(JOptionPane.UNINITIALIZED_VALUE);
}
});
pane.addPropertyChangeListener(
new PropertyChangeListener() {
public void propertyChange(PropertyChangeEvent event) {
// Let the defaultCloseOperation handle the closing
// if the user closed the window without selecting a button
// (newValue = null in that case). Otherwise, close the sheet.
if (sheet.isVisible()
&& event.getSource() == pane
&& (event.getPropertyName().equals(JOptionPane.VALUE_PROPERTY))
&& event.getNewValue() != null
&& event.getNewValue() != JOptionPane.UNINITIALIZED_VALUE) {
sheet.setVisible(false);
sheet.fireOptionSelected(pane);
}
}
});
sheet.pack();
return sheet;
}
