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Subject: Re: [docbook-apps] Re: How to include a JavaScript snippet into htmlhelp files?
On Wed, Oct 29, 2003 at 07:40:54PM +0100, W. Borgert wrote:
> [sorry, if this mail is duplicated - the reqest/subscribe
> address on the oasis-open web page is wrong, so I'm not sure
> whether my posting has been dropped]
>
> Hello,
>
> I'm using docbook-xsl successfully to generate HTML and CHM.
> Because of problems with the MS help viewer, I had to include
> a JavaScript snippet into every single HTML file that is
> generated. Referencing the JavaScript does not work, because
> the problem has to do with paths (finding external files).
>
> It was not hard to just patch html/chunk-common.xsl (see below)
> to include the JavaScript stuff, but now I have to re-patch
> every new version of docbook-xsl. So I would like to have a
> variable at that place and just assign the complete script to
> that variable.
>
> Two questions:
>
> 1. What would be the correct way and syntax to include the
> script via a variable instead of patching
> html/chunk-common.xsl?
As you discovered, patching the stylesheets
is a maintenance headache. The stylesheets are
designed to be customized using a customization
layer that leaves the stock stylesheets intact.
This is described in:
http://www.sagehill.net/docbookxsl/CustomMethods.html#CustomizationLayer
You can customize the template named 'user.head.content',
which is designed for including extra stuff in each
HTML <head> element. It is defined as empty in the
distribution, and it is called when each <head> element
is generated. So you can customize it as follows:
<xsl:template name="user.head.content">
<xsl:copy-of select="document('myscriptfile.js',/)"/>
</xsl:template>
This uses the document() function to open the file named
myscriptfile.js, and then copy it to the output.
The file must be well-formed xml, which just means
it must all be enclosed in one element, such as <script>.
You can also make the filename argument to the document()
function a parameter value and pass the parameter on the
command line.
> 2. What do I have to do, so that the solution (1.) makes it
> into the official docbook-xsl distribution?
It isn't necessary if you use this customization.
Bob Stayton 400 Encinal Street
Publications Architect Santa Cruz, CA 95060
Technical Publications voice: (831) 427-7796
The SCO Group fax: (831) 429-1887
email: bobs@sco.com
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