Overriding isVisible can be quite evil. The problem is that it is called
also in the detach phase. When isVisible depends on the model, your
model is often reloaded!
There are 2 solutions:
- within method isVisible cache the result, clear the cache in the onDetach.
- (recommended) don't override isVisible but do:
@Override void onBeforeRender() {
setVisible(.....);
}
@Override boolean callOnBeforeRenderIfNotVisible() {
return true;
}
Regards,
Erik.
Markus Haspl wrote:
hi,
i have a WebPage with a lot of Panels on it. Each Panel overrides the
isVisible() method because not every Panel should be displayed on the page.
The Problem is: the constructor of each Panel (also which aren't visible) is
called and i have a lot of load on the server. So i tried to make a init()
method (add's all components to the panel) wich is only called when
isVisible==true, but then i get the errors that it couldn't find the
components on panelXX.
thanks
markus
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