[kepler-dev] Disabling run....

[Edward A Lee]

At 08:39 AM 9/23/2004 -0500, Rod Spears wrote:
>Is there a way to actually stop or delay a model from running when all the 
>actors are not yet ready?

Sure... Write the actor so it doesn't return from initialize() until
it's ready... Each run of a model proceeds in an independent thread,
so this shouldn't hang up the UI.  You probably want to time out,
however, and also check for the stop button being pushed (the
protected variable _stopRequested from ptolemy.actor.AtomicActor
is available to all atomic actors...


>Also, (just so the question doesn't get lost) is there an example of an 
>actor interacting with the progress meter? Or is that not possible because 
>of your previous statment.

I don't know of such an example, but I'm sure it's possible.
The hard part is going to be to obtain somehow a reference to the
progress meter.  The actor by default has no references that lead
to the UI, since this will create a dependence in the Java code.

Looking at the following actor will show how you can
get a reference to the TableauFrame, which is the top-level window
displaying the actor:

   ptolemy.vergil.actor.lib.VisualModelReference

The TableauFrame is a subclass of ptolemy.gui.Top, which contains
an instance of ptolemy.gui.StatusBar, which contains the progress
bar...

On quick glance, however, I'm not sure the API of Top is rich enough
to give access to the StatusBar... It probably needs one or more
methods to control what is displayed there... If you suggest changes,
I'll gladly fold them in (assuming they conform with our style guide ;-)

Edward



------------
Edward A. Lee, Professor
518 Cory Hall, UC Berkeley, Berkeley, CA 94720
phone: 510-642-0455, fax: 510-642-2739
eal at eecs.Berkeley.EDU, http://ptolemy.eecs.berkeley.edu/~eal