I have a question about the render method. Why, before rendering, instead of
checking isVisibleInHierarchy(), isVisible() is called?
public final void render(final MarkupStream markupStream)
{
setMarkupStream(markupStream);
setFlag(FLAG_IS_RENDERED_ONCE, true);
// Determine if component is visible using it's authorization
status
// and the isVisible property.
if (isRenderAllowed() && isVisible()) //why not
isVisibleInHierarchy() ??
{
//etc...
}
//more code.
}
I am asking because I suspect a bug with the following StackTrace:
Caused by: java.lang.NullPointerException
at wicket.markup.html.list.ListView.renderItem(ListView.java:676)
at wicket.markup.html.list.ListView.onRender(ListView.java:637)
I happens when an AjaxTabbedPanel is updated via ajax. The tabbedPanel
contains a holder Panel with a ListView child component. The visibility of
the holder Panel is decided dynamicaly by overriding isVisible method.
Maybe later I will try to isolate this situation and to make it more clear.
Still, I would like to know if you've encountered something like this.
Thank you!
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