Try the following code it may yield different results.
But really the best place for an ondata event to keyed from is the
dataset or a datapointer.
<tree name="treeRoot" showroot="false" isleaf="false" >
<datapath xpath="ds:/" ondata="Debug.write('ondata')"/>
<tree isleaf="false" datapath="foo/bar">
<tree datapath="*"/>
</tree>
<tree isleaf="false" datapath="baz/bar">
<tree datapath="*"/>
</tree>
</tree>
If that doesnt work then try using a datapointer to trigger the event
firing like
<datapointer xpath="ds:/" ondata="Debug.write('ondata')"/>
z
On 9/25/06, P T Withington <[EMAIL PROTECTED]> wrote:
> I've always been under the impression that events are guaranteed to
> be fired _at_least_ once, hence your event handler has to be
> [idempotent](http://en.wikipedia.org/wiki/Idempotence_%
> 28computer_science%29). In particular, it may be that when you
> register an event at init time, it is fired immediately (in case the
> event you wanted has already happened).
>
> If my impression is true, I hope it is documented. If not, I am at a
> loss to explain the behaviour you are seeing.
>
> On 2006-09-25, at 16:07 EDT, James Howe wrote:
>
> > In my application I've set up a tree which looks roughly like this:
> >
> > <tree name="treeRoot" showroot="false" isleaf="false" datapath="ds:/">
> > <tree isleaf="false" datapath="foo/bar">
> > <tree datapath="*"/>
> > </tree>
> > <tree isleaf="false" datapath="baz/bar">
> > <tree datapath="*"/>
> > </tree>
> > </tree>
> >
> > The dataset contains other elements which I don't want to be in the
> > tree
> > which is why I have the two subtrees setup to use a specific datapath
> > instead of simply using "*". I want the root tree to do something
> > when
> > new data arrives. My assumption was that whenever I requested data
> > from the dataset (ds) I would receive an ondata event at my root tree.
> > I added a method to "treeRoot" which does this:
> >
> > <method event="ondata>
> > Data.write("On data");
> > </method>
> >
> > When I start my application, I immediately get the 'On data' message,
> > even though I haven't requested any data from my dataset. However,
> > when
> > I actually do request data from the dataset, my ondata event
> > doesn't get
> > called. The tree, however, displays correctly. I'm sure I'm doing
> > something stupid, but can anyone offer ideas on what I might be doing
> > wrong?
> >
> > Thanks!
> > --
> > James Howe
> >
> >
> >
> > _______________________________________________
> > Laszlo-user mailing list
> > [email protected]
> > http://www.openlaszlo.org/mailman/listinfo/laszlo-user
>
>
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