Hide component when instantiating component not authorized to

[Kees van Dieren]

Hi all,

We would like to hide a Panel marked with
@AuthorizeInstantiation("RoleNotAuthorizedTo");

The default behaviour is that wicket sends AccessDeniedPage.

We are using wicket 1.3.7.

I implemented the desired solution by duplicating the complete
org.apache.wicket.authentication.AuthenticatedWebApplication class in our
source tree, and changing the onUnauthorizedInstantiation method to:

    public final void onUnauthorizedInstantiation(final Component component)
    {
        // If there is a sign in page class declared, and the unauthorized
        // component is a page, but it's not the sign in page
        if (component instanceof Page)
        {
            if (!AuthenticatedWebSession.get().isSignedIn())
            {
                // Redirect to intercept page to let the user sign in
                throw new
RestartResponseAtInterceptPageException(getSignInPageClass());
            }
            else
            {
                onUnauthorizedPage((Page)component);
            }
        }
        else
        {
            // Kees /  IOO change: delegate to new onUnAuthorizedComponent
            onUnautorizedComponent(component);
        }
    }

    /**
     *  Kees / IOO change: created delegate method
     * @param component
     *        a (non-page) component that user is not authorized to to
construct.
     */
    protected void onUnautorizedComponent(final Component component) {
        // The component was not a page, so throw an exception
        throw new UnauthorizedInstantiationException(component.getClass());
    }

Our WicketApplication subclass overrides the onUnautorizedComponent with:
    protected void onUnautorizedComponent(final Component component) {
        component.setVisible(false);
    }

Is this the only way to achieve this? I'd like to not duplicate the complete
class, but some kind of hook where I can implement this in.

Is that possible?

Thanks in advance!

Best regards,

Kees van Dieren
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