[Laszlo-dev] [Laszlo-user] Extending LzDataElement

[Henry Minsky]

[moving this to laszlo-dev]

The error it gets is

extend.lzx:4:56: undefined superclass LzDataElement for class myDataElement

The <class> tag is really only built to make classes which inherit from
LzNode or a subclass of LzNode.

LzDataElement is a subclass of LzDataNode, which doesn't inherit from
LzNode.

I suppose it would be possible to make the LZX <class> tag implementation
support extending classes that were not derived from LzNode. It couldn't
really
know anything about attribute types from the superclass,, but it could
define a new class and skip all the
LzNode-specific stuff.

BTW, as of  OpenLaszlo 4.0, we support the  ECMAScript "class" keyword in
script, so you can  say "class foo extends bar  { ....} "  for arbitrary
classes in our class system.







On 6/5/07, P T Withington <ptw at openlaszlo.org> wrote:
>
> What are the errors?  And, what do you want to do with this class?
>
> On 2007-06-05, at 21:01 EDT, Pablo Kang wrote:
>
> > Can someone explain to me why I get compilation errors when
> > extending LzDataElement? Is there a way I can?
> >
> >   <class name="myDataElement" extends="LzDataElement"/>
> >
> > I'm using OLS 3.4.
> >
> > pablo
> >
>
>


-- 
Henry Minsky
Software Architect
hminsky at laszlosystems.com
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