Re: Tiles: dynamically adding definitions

[Jim Snyder <js...@copperkey.com>]

----- Original Message ----- 
From: "John Nikolai" <jn...@mac.com>
To: "Struts Users Mailing List" <st...@jakarta.apache.org>
Sent: Thursday, February 27, 2003 2:24 PM
Subject: Re: Tiles: dynamically adding definitions


> Thanks Cedric, I look forward to seeing the document.
> 
> Is this a feature which may be added to Tiles at a future date?
> Or is this too specialized?
> 
> Thanks again,
>   - John
> 
> On Thursday, February 27, 2003, at 10:46 AM, Cedric Dumoulin wrote:
> 
> >
> >  Hi,
> >
> >  The answer is yes, but it need some coding.
> >
> >  The default definition factory doesn't provide a well know API to add 
> > dynamically new definitions.
> >  What you can do is to implement your own definition factory to 
> > provide such functionality. You can extends the existing factory and 
> > add the methods you need.
> >  You have to know that the "extends" mechanism is resolved statically 
> > when the config file is loaded. After that, definitions are stored 
> > resolved. So, you have to resolve yourself your extend. This is 
> > however simple to do: get the definition referenced by "extend", 
> > create a new definition initialized with the previously loaded one, 
> > add your own attributes, store your definition in the factory.
> >  I have a short document describing how to write a factory. I will 
> > make it accessible asap.
> >
> >  Cedric
> >
> > John Nikolai wrote:
> >
> >>
> >> Is it possible to define a few base tiles definitions (loaded using 
> >> TilesPlugin) and, during runtime, read in other definitions which 
> >> extend these base definitions?
> >>
> >> Here is an example use:
> >>
> >> We have an XML file which defines a web site and used to generate the 
> >> web site navigation. If we add a new page to the site we need to 
> >> update this XML file to update the navigation as well. Can I add a 
> >> tiles definition to this XML file and add that definition into tiles 
> >> for processing?
> >>
> >> <nav path="/events" file="events.jsp">
> >>     <leftnav> Events &amp; Activities </leftnav>
> >>     <breadcrumb> Events &amp; Activities </breadcrumb>
> >>     <definition name="events.page" extends="master.page">
> >>         <put name="body" value="/events/events.jsp" />
> >>         ...
> >>     </definition>
> >> </nav>
> >>
> >> NOTE: "master.page" is defined in the default definitions loaded at 
> >> startup using TilesPlugin.
> >>
> >> Doing it this way when I add a new file I only need to update a 
> >> single XML file as opposed to several.
> >>
> >> Thanks for your help!
> >>  - John
> >>
> >>
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> >>
> >
> >
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