Dear all,

I would like to write a plugin that does the following:

1. Provide a Macro [[NarrowPage()]] that marks the current Wiki page as
"narrow".
2. A ITemplateStreamFilter Component that looks for a "narrow" mark on the
current page and adds a "narrow" class to div#content.

I have already figured out how to do (2) but I have so far not found a way
for the Macro to communicate with the ITemplateStreamFilter.

Is this possible at all?

Cheers,
Manuel

Am 04.07.2012 11:12, wrote Manuel Holtgrewe:

You could attach an additional req.args['narrow'] to formatter.req on
macro execution time, that should be available later on in req object
passed in filter_stream method. But I see, that using Request object is
or at least is planned to be depreciated according to the wiki docs [1].

So a more sustainable way leaving the req alone would be to add a
minimal, unique HTML snipped like
 <div id="narrow_marker"></div>
and create a matching XPATH filter like
 xpath_match = "//div[@id='narrow_marker']"
to
 * find it (and possibly remove it)
 * finally add the 'narrow' class to div#content
as you already know how to do by a secondary filter expression, that
should be triggered by the first one.

Sincerely,

Steffen Hoffmann

[1]
http://trac.edgewall.org/wiki/TracDev/PluginDevelopment/ExtensionPoin...

smime.p7s 7K Download

I think that Steffen's suggestion is correct if you are to continue
implementing this by working with ITemplateStreamFilter.

However, I did some experimenting, and from the simple description you
provided and assuming you don't need to do something more complex, I think
this can be implemented without messing with ITemplateStreamFilter. You can
just make a macro that returnd an empty string, and add a stylesheet to the
page in `expand_macro`.

I took that approach in the attached example plugin. It allows
[[NarrowContent]] to be added to the page, and results in:

<https://lh6.googleusercontent.com/-Bz2flnWHNHA/T_TjNUasj8I/AAAAAAAAAX...>

narrowmacro.zip 2K Download

Thanks to both of you! This solves my problem.

I came across #10626 (1) today, which points to (2), which has little
button that narrows/expands the widths of the page content. Thought it
might be interesting to you.

(1) http://trac.edgewall.org/ticket/10626
(2) http://code.optaros.com/trac/oforge/