FrapMenu menu/item ordering

[Erik Harrison]

On 2/22/07, Brian J. Tarricone <bjt23 at cornell.edu> wrote:
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> On Thu, 22 Feb 2007 09:05:16 +0100 Stephan Arts wrote:
>
> >On 2/21/07, Brian J. Tarricone <bjt23 at cornell.edu> wrote:
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> >> On Wed, 21 Feb 2007 20:42:36 +0100 Stefan Stuhr wrote:
> >>
> >> > ons, 21 02 2007 kl. 20:19 +0100, skrev Jannis Pohlmann:
> >> > > They're unsorted as the order is unimportant for internal use.
> >> > > Comparing them by names is really easy with the help of a
> >> > > GCompareFunc as you can see above.
> >> >
> >> > I will admit that I don't know the fd.org menu standard, but if the
> >> > implementation in GNOME follows the standard (I do believe that it
> >> > does), then the order does matter - and not necessary a sorted
> >> > order.
> >>
> >> Agreed.  If FrapMenu can't preserve the order from the .menu file,
> >> that's a *huge* limitation.  How will people make menus with
> >> arbitrarily-ordered items?
> >
> >Sorry to disappoint you there, but the XML standard does not force
> >siblings to be entered in a specific order. As such, there is no XML
> >parser which will guarantee you that xml-nodes are returned in the
> >order they come up in the file. And they do not have too, it is not
> >part of XML-spec itself.
> >
> >As a consequence of this, it is impossible for FrapMenu (or any other
> >application which uses XML) to preserve the order since it is not even
> >certain that the order in which the nodes are presented to him is the
> >order in which they where inside the file.
> >
> >On a side-node, usually it does work this way, but we cannot rely on
> >this.
>
> Er, are you aware of any XML parsers that *don't* return them in
> order?  libxml2 and the gmarkup parser both do, last I checked, and I
> can't see why a parser wouldn't do this.
>
> Regardless: if it is not possible to specify a strict ordering of the
> menu -- whether a limitation of XML itself, or in the menu spec -- I
> consider the spec broken.  The menu spec's <Layout> element (when
> Jannis implements support for it) should work fine, though it *does*
> functionally depend on the XML parser returning elements in order.
>
> If what you say is true, I can think of several other popular
> applications that use XML for ordered lists; I'd be very surprised to
> find out that that method ever breaks.

Like XHTML? If the nodes were unordered. Oh man. That would be awesome


>
>         -brian
>
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-- 
Erik

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