[Ctk-developers] Another ctkWorkflow thingie: goToStep(..) goes always back to starting step

[Danielle Pace]

Hi Daniel,

CanGoToStep checks to see if a path exists between two steps - so it is not
helpful in your case.

Right now, there is no method to go to a specific step without transitioning
back.  We could add a property that dictates whether to go back to the
starting step after successfully getting to a 'finish' step...

Thanks,

Danielle





On Fri, Jun 3, 2011 at 3:45 PM, Daniel Haehn <haehn at bwh.harvard.edu> wrote:

> Hi Danielle,
>
> hm this does not make totally sense to me. What about the canGoToStep
> method - this only checks for next step?
>
> Wouldn't it make more sense to have the behavior I observed and you
> described for the canGoToStep call and do not go back when you call
> goToStep?
>
> Or is there another method I could use to go from step 1 to step 4, f.e.?
>
> Thanks
> Daniel
>
> On Fri, Jun 3, 2011 at 3:40 PM, Danielle Pace <danielle.pace at kitware.com>
> wrote:
> > Hi Daniel,
> > This is the intended behavior when using 'goToStep'.
> > The idea is that, partway through the workflow, you could execute the
> steps
> > until a 'finish step' was reached - using the default parameters for
> those
> > steps.  Then you can evaluate the results that occur with default
> > parameters.  If you get to the 'finish' step successfully, it puts you
> back
> > where you started - so that you can continue to step through and alter
> > parameters if you like.
> > If you do not get to the 'finish' step successfully (i.e. default
> parameters
> > produce errors on your data or because of the parameters you set in prior
> > steps), it will stop at the error.
> > Hope that helps,
> >
> > Danielle
> >
> >
> >
> >
> > On Fri, Jun 3, 2011 at 3:34 PM, Daniel Haehn <haehn at bwh.harvard.edu>
> wrote:
> >>
> >> Hi guys,
> >>
> >> if I use ctkWorkflow.goToStep(x), the workflow goes to the step x
> >> along the workflow (according to onEntry, validate and onExit calls).
> >>
> >> But then, after reaching step x, it goes directly back to where I am
> >> coming from - again along the workflow. This goes so fast so it seems
> >> there is no movement at all.
> >>
> >> I digged a little and it seems line 1035 in ctkWorkflow.cpp is not
> >> right? After reaching the 'finish step' (which in my understanding is
> >> the target step), it goes back to the starting step.
> >>
> >>
> >> 1019 //
> >>
> --------------------------------------------------------------------------
> >> 1020 void ctkWorkflow::goToStepSucceeded()
> >> 1021 {
> >> 1022   Q_D(ctkWorkflow);
> >> 1023
> >> 1024   logger.debug("goToStepSucceeded");
> >> 1025
> >> 1026   // after success, go back to the step at which we begin looking
> for
> >> 1027   // the finish step (will exit the current step and enter the
> >> starting step)
> >> 1028
> >> 1029   d->createTransitionToPreviousStartingStep(d->StartingStep,
> >> d->CurrentStep);
> >> 1030
> >> 1031   d->GoToStep = 0;
> >> 1032   d->StartingStep->setStatusText("Attempt to go to the finish
> >> step succeeded");
> >> 1033   d->StartingStep = 0;
> >> 1034
> >> 1035   this->goFromGoToStepToStartingStep();
> >> 1036 }
> >> 1037
> >>
> >> Is this correct behavior and I understand the goToStep(x) call wrong
> >> or is this a bug?
> >>
> >> Cheers,
> >> Daniel
> >> _______________________________________________
> >> Ctk-developers mailing list
> >> Ctk-developers at commontk.org
> >> http://public.kitware.com/cgi-bin/mailman/listinfo/ctk-developers
> >
> >
> >
> > --
> > Danielle Pace, M.ESc.
> > Research and Development Engineer
> > Kitware Inc.,
> > North Carolina Office
> > www.kitware.com
> > 919-969-6990 X 319
> >
>



-- 
Danielle Pace, M.ESc.
Research and Development Engineer
Kitware Inc.,
North Carolina Office

www.kitware.com
919-969-6990 X 319
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