Re: JSplitPane / heavyweight vs. lightweight components

[Pavel Porvatov]

Hi Johannes,

Could you please provide a small test that can be run and which shows 
the problem?

Thanks, Pavel
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@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