[Seaside] Re: #urlForDocument: w/o canvas?

Udo Schneider Udo.Schneider at homeaddress.de
Wed Oct 15 15:37:40 UTC 2008

Hi Sebastian,
> For elegance you can make that dictionary to be in an inst var of your wrapper
> component and in the render method json that instvar (presumably with a proper
> dictionary).
As far as I can see it I can move some of the code to a separate method. 

   super initialize.
   swf := SwfObject new.
     alternativeContent: [:html | html text: 'Flash is being loaded'];
     extent: 640 @ 480;
     url: OFCFileLibrary / #openflashchartSwf

ofcVariables: html
   ^(Dictionary new)
     at: 'data-file' put: (html context urlForDocument: self data);

However I still see a problem: To obtain a URL for the data-file in 
#ofcVariables: I still have to call #urlForDocument. And this is only 
possible to do it by calling the current renderers context and ask it 
for the document URL.

I think what I would need is a way to get a URL for some content which 
is not dependent on the canvas (i.e. initialized /once/ in the 
#initialize method of the parent component). IMHO something between 
using #urlDocument: /which depends/varies on the per render-run canvas) 
and using a static file (using WAFileLibrary and friends.

> That way could potentially be changed in any calback and then render properly
> according to that.
Callback rings a bell for me - is there a way to define a callback (and 
getting it's URL) and to define what kind of content to return?

> PD: that, of course, if I understood you right ;)
You did - I just may have been a bit unclear. It's not that it doesn't 
work right know - it's just that changing a sub-components state during 
a render-run seems wrong to me.



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