[Uml-devel] usability problems

Stefan Klett s_teve at ira.uka.de
Mon Jan 27 09:18:05 UTC 2003


On Mon, 27 Jan 2003, Jonathan Riddell wrote:

>
> On Fri, 10 Jan 2003, Stefan Klett wrote:
> > The second problem is founded in the way umbrello makes the descision
> > whether a message is intended to be sent to the object itself or to
> > another object. AFAIK there is no way to make this  decision
> > intensionally, but is left to the modeler (I guess the intention was to make this by a
> > kind of "mouse-gesture"- the way an object is touched by the mouse while
> > dragging ) - but unfortunately this in most of the cases did not work- the
> > results were that i only was able to send self references, but found no
> > way to express that i wanted to send a message to a different object in
> > the diagram(of course resulting in many surplus "loops" which could not be
> > deleted due to the problem described above). Therefore i am begging you to
> > to include a possibility to influence  this behaviour - the "right mouse
> > down" menue would be a good place to say: loop or straight).
>
> Sorry for the late reply.  I don't quite understand this point.  To send a
> message from one object to another you click on the first then on the
> second.  To send a message from one object to itself you click on the
> object then on the object again.  Are you getting confused by having two
> clicks rather than a drag (something I'd like to change)?

The point is, that if i once activate the function "send a message to the
object itself" it keeps going on every first click (before i had sent some
messages from one object to another - then click the same object twice
-allright- the self reference shows up , but after every first click means
a self reference) that means i'm no
more able to give an alternative destination but the object i first do a click
on.  To handle this ,sort of failsafe ,i would  suggest an additional menu
entry (right button pressed)o control the type of reference/message by
explicit selection.

 Keep hacking :-)

Stefan Klett

   > Jonathan Riddell
>
>
>






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