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RE: [platform-swt-dev] possible XML SWT markup language?
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Derek,
Im totally with you. By putting the event code in the XML you are effectively
trying to do stuff you can do in a scripting language, but in a markup
language. If you want markup, do it. If not, use a scripting language where
theoretically you can have debugging tools when you have a problem. How the
hell would you ever track down an exception occuring in code in XML?!?
-jonathan
--- public@xxxxxxxxx wrote:
>
> > I haven't tried JellySWT or XAML myself but I think the
> > concept of an XML GUI markup language would be very helpful.
>
> I agree. Judging by the traffic this thread has generated, I think we've
> struck a chord.
> I've been reading up on the multitude of links, and they look like good
> projects. However they are not what I think would be best for the Eclipse
> community to adopt - let me try and explain why:
>
> Most of these projects seem to be either generic UI descriptors, trying to
> support a multitude of UI frameworks, or Swing UI descriptors, being
> retro-fitted to use SWT.
> Part of the strength SWT has, part of the reason it is as fast and
> reliable as it is, is there is a 1-to-1 mapping in the JNI calls between
> OS calls and their java equivs. A set of more general widgets were then
> built on top, abstracting out the difference between a win32 buttonCreate
> call and a GTK2 buttonCreate call, but the abstraction was kept in only
> one layer.
> This layer already works. There is no need to create another. Trying to
> create another object/API set in XML to enclose Swing/SWT/AWT/etc
> drastically increases the complexity of the task, and creates a lot more
> work for the programmer than it saves (in tracking down performance
> problems, having to look up widgetA->widgetB mappings, etc).
> I say we keep with the Eclipse princple of 1-to-1 mappings outside the
> single layer of abstraction. 1 XML tag to 1 SWT object. 1 property to 1
> method. Let there be different, seperate XML descriptors for
> SWT/Swing/AWT. They will each be simpler, faster, easier to work with.
>
> I'm interested in either contribiting to or starting the SWT component to
> such a project. Chris, (or anyone else), if this is what you are
> currently working on, I'd love to help. :)
>
>
> -- Derek Anderson
> Software Engineer
> http://kered.org
>
>
> P.S. The JellySWT project - I like it, but I noticed a really odd-ball
> element in its example. The java code for the event loop is embedded in
> the XML descriptior of the shell? WTF? :) Even if you, as the comment
> suggests, abstract it out away as a tag, that seems like a very bad idea.
> XML makes a horrible wrapper around source code, and it breaks the nice
> encapsulation you otherwise enforce. I suggest a hard and fast rule of no
> logic operations, instead simply firing off events in actual java code.
> What do you think?
>
>
> > Here's another one: http://jgb.sourceforge.net/
> > See also the XAML work in Longhorn (sorry, no link).
> >
> > The problem is most of these libraries have a license incompatible with
> > Eclipse. I haven't tried JellySWT or XAML myself but I think the
> > concept of an XML GUI markup language would be very helpful. After all,
> > that's essentially what HTML is for web pages, right? Hmmm... maybe a
> > GUI markup language should really start with XHTML.
> >
> >
> > -----Original Message-----
> > From: Dave Orme [mailto:DaveO@xxxxxxxxxxxxxxx]
> > Sent: Thursday, May 22, 2003 10:14 AM
> > To: 'platform-swt-dev@xxxxxxxxxxx'
> > Subject: RE: [platform-swt-dev] SV: [platform-swt-dev] possible XML
> > SWT markup language?
> >
> >
> >
> >
> > > there are some projects beginning to emerge at that front:
> > > Jelly-SWT has it's SWT-binding at
> > > http://jakarta.apache.org/commons/sandbox/jelly/jellyswt.html
> > > <http://jakarta.apache.org/commons/sandbox/jelly/jellyswt.html> but
> > > the authors of that package are working on Xulux and Nyx
> > > now. The thought is very cool ...
> > >
> > > http://nyx.xulux.org/index.html <http://nyx.xulux.org/index.html>
> >
> > I was aware of JellySWT, but not about xylux. Thanks for the links.
> >
> >
>
>
>
> _______________________________________________
> platform-swt-dev mailing list
> platform-swt-dev@xxxxxxxxxxx
> http://dev.eclipse.org/mailman/listinfo/platform-swt-dev
=====
Jonathan Simon
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