Resize Listener in JFrame

[GoogleCodeExporter]

The resize listener for JFrame is not working properly, because it is called at 
the end of an resize event (and not continously while resizing).

Solution:
The ComponentListener (ComponentAdapter) has to be added to the ContentPane of 
the JFrame. This Listener will only receive resize events, because the 
ContentPane will never be moved relative to the JFrame.

Suggestion:

// in SwingComponent
final Component resizeListenerComponent;  // may be replaced by method
if (getUiReference() instanceof JFrame) {
    resizeListenerComponent = ((JFrame) getUiReference()).getContentPane();
}
else {
    resizeListenerComponent = getUiReference();
}
resizeListenerComponent.addComponentListener(new ComponentAdapter() {
    @Override
    public void componentResized(final ComponentEvent e) {
        componentObservable.fireSizeChanged();
    }
});

getUiReference().addComponentListener(new ComponentAdapter() {

    @Override
    public void componentMoved(final ComponentEvent e) {
        componentObservable.firePositionChanged();
    }
});

Original issue reported on code.google.com by googlec...@dev.nikolaus-moll.de on 22 Apr 2011 at 1:29