<Swing Dev> JSplitPane / heavyweight vs. lightweight components

[Johannes.Lichtenberger]

Hello,

I'm adding a JSplitPane to a JPanel within a frame, and the frame has a
JMenuBar added. I'm now adding a JPanel component which embeds a PApplet
component (processing from processing.org) which extends Applet to the
JSplitPane. It doesn't seem to work even though I've added

    /**
     * Handle mix of heavyweight ({@link PApplet}) and leightweight (
{@link JMenuBar}) components.
     */
    public void handleHLWeight() {
        final Container parent = mView.component().getParent();
        if (parent instanceof JComponent) {
            ((JComponent)parent).revalidate();
        }
        final Window window = SwingUtilities.getWindowAncestor(this);
        if (window != null) {
            window.validate();
        }
    }

to the embedded view which is for instance called within draw(), a
method which is called frameRate(int)-times per second.

Without the JSplitPane it seems fine, but now I'm adding another view
side by side and it doesn't work anymore :(

Well to recap the setup:

View extends JPane => is inserted in a JSplitPane.
View embeds a PApplet instance via (add(Component)).
JSplitPane is inserted in a JPane and added to the contentPane of a
JFrame instance together with a JMenuBar instance (via
setJMenuBar(JMenuBar)).

I'm using Java7.

johannes at luna:~/workspace/treetank$ java -version
java version "1.7.0"
Java(TM) SE Runtime Environment (build 1.7.0-b147)
Java HotSpot(TM) 64-Bit Server VM (build 21.0-b17, mixed mode)

The setup of the JSplitPane is as follows:

    /**
     * Setup of the {@link JSplitPane} reference.
     *
     * @param paramPane
     *            {@link JSplitPane} reference
     * @param paramTmpView
     *            {@link JComponent} reference to the left
     * @param paramView
     *            {@link JComponent} reference to the right
     */
    private void
        setupPane(final JSplitPane paramPane, final JComponent
paramTmpView, final JComponent paramView) {
        assert paramPane != null;
        assert paramTmpView != null;
        assert paramView != null;
        paramPane.setSize(new Dimension(mGUI.getWidth(), mGUI.getHeight()));
        paramPane.setAlignmentX(mGUI.getWidth() / 2f);
        paramPane.setAlignmentY(mGUI.getHeight() / 2f);
        paramPane.setDividerLocation(0.5);
        paramPane.setContinuousLayout(true);
        paramPane.setLeftComponent(paramTmpView);
        paramPane.setRightComponent(paramView);

paramPane.addPropertyChangeListener(JSplitPane.DIVIDER_LOCATION_PROPERTY, new
Listener(paramPane));
        final Container parent = paramPane.getParent();
        if (parent instanceof JComponent) {
            ((JComponent)parent).revalidate();
        }
        final Window window = SwingUtilities.getWindowAncestor(this);
        if (window != null) {
            window.validate();
        }
    }

I'm not sure, I thing the final code is useless with revalidate() and so on.

kind regards,
Johannes