Do script-only stacks support "chained" behaviors?

Mike Kerner MikeKerner at
Mon Jan 22 09:10:21 EST 2018

Since Trevor didn't answer the Levure question,
The way he suggested structuring the projects was putting the ui elements
and their behaviors into /ui/stackName (and then the behaviors for that
stack into /ui/stackName/behaviors/).  As for naming the stacks,
Scriptifier does it one (long) way in an attempt to make all the names
unique.  Trevor had suggested objectType<sp>objectName<sp>"behavior", but
of course there is no reason why you would would have to be held to that.

It's not that you can't have scripts all over the Levure project, because
you will with libraries, components, etc. but those aren't the major PITA,
and that isn't what you're trying to address with Navigator.

SO, if I was going to convert a stack automagically, I would want to
1) make a copy of the stackfile, placing it in the /ui/stackname folder and
work on the copy
2) pull the various behaviors and put them in the /ui/stackfile/behaviors
>From there, we can argue a lot about the structure of the behaviors
folder.  On the one hand, if you keep everything in there together, then
you can kind-of use the names to keep everything straight, because as long
as you don't change the names of the SOS's, it doesn't matter if you move
the objects they are tied to from one card to another.  It's just that the
/behaviors folder can become the storage for hundreds of SOS's.  On the
other, it might be good to give the developer an option to have subfolders
for each card, but as soon as they move an object from one card to another
you have a gigantic mess of the developer wanting the SOS's to move, but
that will break the references, etc.

I'm glad you're working on this!  Now I can stop thinking about working on
it and go do something else.

On Mon, Jan 22, 2018 at 6:38 AM, Trevor DeVore via use-livecode <
use-livecode at> wrote:

> On Mon, Jan 22, 2018 at 12:20 AM Geoff Canyon via use-livecode <
> use-livecode at> wrote:
> > It occurs to me that this isn't as much of a problem as I thought -- any
> > button being converted to a stack is highly unlikely to have an openstack
> > handler already in it, and therefore it would be safe to add one and
> > include setting the behavior of the script-only stack to the appropriate
> > stack up the chain. If there were already an openstack handler in the
> > chain, then the conversion process could stop at that point, or perhaps
> log
> > the error to the user. Unless I'm missing something?
> Geoff,
> Keep in mind that script only stacks that are loaded into memory by the
> engine because they are referenced in the stackfiles of another stack won’t
> be sent any messages.
> You have to complete the behavior chain in the openStack handler of the
> stack that is being opened. I think in your case you would process the
> openStack message in the stack you are setting the stackFiles on.
> Trevor DeVore
> ScreenSteps
> >
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