Re: Integration with WebWork

Is that hook to tell the ServletDispatcher not to clean up the ValueStack in
the WW 1.x Codebase? or did you make a mod to the WW that JIRA uses?

I only ask because I did not see it in CVS (at least I dont think I did
;-)).

----- Original Message ----- 
From: "Mike Cannon-Brookes" <[email protected]>
To: <[email protected]>
Sent: Tuesday, March 09, 2004 6:44 AM
Subject: Re: [Opensymphony-sitemesh] Integration with WebWork


> Juergen,
>
> There are two approaches to this really.
>
> 1) Putting the menus within the decorated page (how Confluence does it)
>
> In your HTML, put something like this:
> <content tag="menu">
> ... menu HTML here using WW tags, i18n etc...
> </content>
>
> Now in your decorator you can just use:
> <decorator:getProperty name="page.menu" /> (I think)
>
> or in Velocity:
>
> $page.getProperty('page.menu')
>
> 2. Alter WW2 (how JIRA does it with WW1)
>
> This is a more generic approach which allows you to use any WW tag, the
> value stack etc within your decorator.
>
> The problem here (as you've found) is that the value stack is no longer
> present in the decorator. Basically, the control flow is something like
> this:
>
> 1. SiteMesh Filter starts gathering the request stream
> 2. WW ServletDispatcher runs, executes action and dispatches to view
> 3. View runs
> 4. ServletDispatcher cleans up the value stack
> 5. SiteMesh filter finishes gathering the request, and dispatches to
> the decorator
> 6. Decorator runs and complete result is returned
>
> This is a problem, because in step 4 the value stack is cleaned up,
> therefore in step 6 the decorator doesn't have the value stack to use.
>
> The way to get around this is to wrap a filter around the whole chain
> (ie above SM filter in the filter stack) which adds a request attribute
> to tell WW _not_ to clean up the value stack. Step 4 then doesn't
> happen, and instead you clean up the value stack in your filter during
> step 6.5.
>
> Does that make sense? :) (apologies - almost 11pm here)
>
> Any questions, please ask.
>
> Cheers,
> Mike
>
> On 09/03/2004, at 6:39 PM, Donnerstag, Juergen wrote:
>
> >
> > I've just started using webwork2 and sitemesh. If the following is a
> > stupid
> > question, please apologize.
> >
> > I've create a page layout using sitemesh with header, left menu and
> > main
> > area. Because there is meant to be always a menu bar, I put the menu
> > definition into the sitmesh template. That works fine. Next thing was
> > to
> > localize the menu and the tooltips. WebWork provides some simple means
> > to do
> > that: tags (i18n and text) and ActionSupport, a base implementation
> > for most
> > Actions provides similiar methods. Unfortunately, due to the way
> > sitemesh
> > works, the WW2 action instance is no longer available. Lucky me, most
> > of
> > methods required for localization are static methods. But now my
> > template
> > html code does no longer look like typical WW2 html and I always to be
> > aware
> > of that while making changes. That is akward.
> >
> > Next step was to personalize (disable, modify) the menu based on the
> > users
> > role. And the same problem arose. Based on the way sitemesh works there
> > seems to be no way to access the WW2 action object (which is
> > responsible for
> > the main area) from within the sitemesh template. Is that correct? The
> > solution would be to move the menu out of the template and into each
> > and
> > every jsp file? That isn't a very solution too? Any ideas?
> >
> > thanks for your support
> > Juergen
> >
> >
> >
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>
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