[umbrello] [Bug 53369] composite (nested) states in state diagrams

[Carsten Behling]

https://bugs.kde.org/show_bug.cgi?id=53369

--- Comment #13 from Carsten Behling <carsten.behling at gmail.com> ---
(In reply to Ralf Habacker from comment #12)
> (In reply to Carsten Behling from comment #11)
> > Hi Ralf, nice idea to basically add a statechart to a state. Does your
> > solution consider that a Transition from outside a state may lead to an
> > inner state or history? Further, basically modelling concurrency with dashed
> > lines should be possible (see attached image). 
> > Are we still open for adding this feature with your solution for nested
> > states?
> What alternatives do you think are possible?

For concurrency/orthogonal states we could allow to assign multiple statecharts
adding a new 'partial area' with dashed lines to the state and render very new
statechart into the new area.

For transitions crossing state borders it may be  inevitable introduce
parent/child relations. Since I don't know the Umbrello Code very well yet, I
can't judge if that would be a painful task.

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