Do you want the "configuration" code to run each time before the component
your behavior is attached to renders?
Then go ahead and place your code there, otherwise if you only want the
"configuration" code to run only once see the onConfigure() method:
/**
* Called immediately after the onConfigure method in a component. Since
this is before the
* rendering cycle has begun, the behavior can modify the configuration of
the component (i.e.
* setVisible(false))
*
* @param component
* the component being configured
*/
public void onConfigure(Component component)
{
}
On Thu, Jan 2, 2014 at 4:00 AM, Per Newgro <per.new...@gmx.ch> wrote:
> Hi,
>
> we have an admin menu in our menu bar. All items in admin menu are
> configured by @AuthorizeAction.
> I would like to hide the admin item in main menu if no menu item is
> visible in the admin menu (e.g. user is not an admin).
>
> To avoid repeating myself in every onBeforeRender method of the included
> components i've tried to use a behavior.
> It tries to hide parent by checking if all items are invisible and
> configure the parent's visibility.
>
> But this is not working (configure(component) and beforeRender(component)).
> Configure is not usable because the render permission (setRenderAllowed)
> is determined after the Behavior.onConfigure was called.
> So the action takes place before the child is authorized.
>
> Then i thaught let's do it in beforeRender. But there we got a message
>
> org.apache.wicket.WicketRuntimeException: Cannot modify component
> hierarchy after render phase has started (page version cant change then
> anymore)
> at org.apache.wicket.Component.checkHierarchyChange(Component.java:3595)
> at org.apache.wicket.Component.addStateChange(Component.java:3524)
> at org.apache.wicket.Component.setVisible(Component.java:3213)
>
> This is comprehensible for me so far. No change after rendering started.
> But how shall i hide the parent without repeating myself in
> every Component.onBeforeRender method? This is working. But i have to
> duplicate my code for ListItem, ListView and AdminPanel.
>
> We use wicket-6.11
>
> Thanks for helping me out of the wood.
> Per
>
> Here some markup of my admin menu markup.
> <code>
> <html xmlns:wicket>
> <wicket:panel>
> <a href="#" data-dropdown-toggle="#admin-navigation"
> wicket:message="title:navigation.fullHeading.administration">
> <i class="icon-admin">?</i>
> </a>
> <div id="admin-navigation">
> <ul>
> <wicket:container wicket:id="items">
> <wicket:enclosure child="menu-item">
> <li>
> <a wicket:id="menu-item">
> <span>
> <wicket:container
> wicket:id="short-title">Short title</wicket:container>
> </span>
> </a>
> </li>
> </wicket:enclosure>
> </wicket:container>
> <wicket:enclosure child="reindexSearch">
> <li>
> <a wicket:id="reindexSearch"
> onclick="alert('Rebuild initiated'); return true;">
> <wicket:message
> key="navigation.fullHeading.reindex">Reindex
> Search Server</wicket:message>
> </a>
> </li>
> </wicket:enclosure>
> </ul>
> </div>
> </wicket:panel>
> </html>
> <code>
>
> In page menu is included this way:
> <code>
> ...
> <ul class="button-toolbar" id="main-navigation">
> <wicket:container wicket:id="buttonMenu"></wicket:container>
> <wicket:enclosure child="adminNavigation">
> <li wicket:id="adminNavigation"></li>
> </wicket:enclosure>
> </ul>
> ...
> </code>
>
>
> ---
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