Jeremy Quinn wrote:
> I am trying to make a command that will open a related document.
>
> Using this snippet of xml:
>
> <site xl:title="KISS">
> <map default="home" id="linkbase" role="reli" xl:href="/linkbase.xml"
> xml:base="xlink"/>
> <map xml:base="xml/" default="home" id="kiss" role="site">
> <ref xl:label="home" xl:href="home.xml" xl:title="Home Page of the
> KISS Rebreather Users Website">
> <name>KISS</name>
> <ref xl:label="work" xl:href="work/home.xml" xl:title="How the KISS
> Rebreather works">
> <name>Work</name>
> <ref xl:label="schematic" xl:href="work/schematic.xml" xl:title="A
> diagram showing how the unit works">
> <name>Schematic</name>
> </ref>
> . . .
>
> When you select the element r...@xl:label='work'] (above) I would like
> the command to select the value in the @xl:href to use to open that
> particular file:
>
> <command name="link.openDocument">
> <macro>
> <sequence>
> <command name="get" parameter="[implicitElement][URL]
> ./@{http://www.w3.org/1999/xlink}href"; />
> <command name="XXE.open" parameter="%_" />
> </sequence>
> </macro>
> </command>
> <menu label="LinkMap">
> <insert />
> <item label="Open Document" command="link.openDocument"/>
> </menu>
>
> This works fine when I try to use an attribute that does not have a
> namespace prefix, but when I use the xl namespace, the menu item is
> always dimmed.
See my answer about XXE non being namespace aware when the document
conforms to a DTD.
If this is the case, changing "./@{http://www.w3.org/1999/xlink}href"; to
"./@xl:href" should fix the problem[*]
---
[*] After rereading the code of command "get", I've found a bug in the
parser of the subset of XPath. "./@xl:href" should have worked, but will
not work due to the bug. Sorry.
> Furthermore, when I get that selection working, I need to prepend the
> value '../' to the string returned from the attribute, before XXE.open
> is called. How do you do this ?
>
> like this? :
> <command name="XXE.open" parameter='../"%_"' />
>
> or this? :
> <command name="get"
> parameter="[implicitElement][URL]
> concat('../',./@{http://www.w3.org/1999/xlink}href)" />
You'll have to wait for XXE V2.6 which will fully support XPath 1.0 at
various places, one of these places being the "get" command.
XXE V2.5 only supports a very small subset of XPath (the subset needed
to validate XML-Schemas) and this subset does not include "..".
