The panel is not rendered when you call setVisible(false). So the
subsequent ajax update has no dom element to replace. You can call
panel.setOutputMarkupPlaceholderTag(true) to work around it.
-Matej
On 9/14/07, Kirk Israel [EMAIL PROTECTED] wrote:
I looked over a lot of the usual examples but didn't quite find what I
was looking for... I also tried looking for more information inside of
Pro Wicket. As always, pointers to useful examples and documentation
appreciated.
My overall task is to make a dropdown menu, one that appears under a
graphical More Ajax Link, some kind of Panel containing clickable
links.
First question on visibility: in the Java i had something like
moreMenuPanel = new WebMarkupContainer(moreMenu);
moreMenuPanel.setVisible(false);
moreMenuPanel.setOutputMarkupId(true);
add(moreMenuPanel);
against html
div wicket:id=moreMenuHey there/div
And then there was an AjaxFallbackLink with
public void onClick(AjaxRequestTarget ajaxTarget) {
moreMenuPanel.setVisible(true);
ajaxTarget.addComponent(moreMenuPanel);
}
This didn't do what i expected, the panel didn't appear. The Ajax console
shows
ERROR: Component with id [[moreMenu72]] a was not found while trying
to perform markup update. Make sure you called
component.setOutputMarkupId(true) on the component whose markup you
are trying to update.
Is the initial invisibility messing things up? I think I've heard that
Wicket will sometimes not display any markup for things where
isVisible is false? Though in this case in the page source I see
div id=moreMenu72Hey there/div
We have a work around of having an AttributeModifier to set the
visibility, but it seems rather crude... or am i missing the point of
how visibility is used in Wicket?
And once that's solved, there's still the problem of positioning...
ideally this panel is floating, and can be passed a component on the
Java that will determine where it appears. Is this something that
needs to be built from a fairly low level w/ behaviors and custom
javascript, or is there something closer to ready to go?
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