Re: R: R: [gef-dev] How to redraw a Connection

["Siddharth Shankar" <siddharth.star@xxxxxxxxx>]

What exactly are you doing in your repaint method which u say is not getting updated?
I'll try that stuff for a model change in one of my own PolyLineConnection and let you know if I was able to do it successfully but any more replies from me only tomorrow now:-)

On 9/21/06, Alessandro Negri <negri@xxxxxxxxxxx> wrote:

Thanks Siddharth, all works fine as you say...but not the last point.
In refreshVisuals I call getFigure().repaint() (the TransitionEditPart), but
nothing happens to the view. How can I "update" it?

Sorry, but I tried every method with any result...

-----Messaggio originale-----
Da: gef-dev-bounces@xxxxxxxxxxx [mailto: gef-dev-bounces@xxxxxxxxxxx] Per
conto di Siddharth Shankar
Inviato: giovedì 21 settembre 2006 15.30
A: GEF development
Oggetto: Re: R: [gef-dev] How to redraw a Connection

Hi,
Well some how i cant comprehend why making the changes in refreshVisuals is
not working out for you. Try one other way out though I am not sure if that
is the best possible way but this would work.
Whenever you make change in the model, make a call to
firePropertyChange(propname, oldValue, newValue) [Here I am assuming your
model has a PropertyChangeSupport attached to it]. Now in your edit part's
propertyChange method when the designated prop name is fired, conditionally
call refreshVisuals and this should work. In refreshVisuals do a getFigure
and update whichever view level components u have. It definitely works for
me and hope it does for you too.:-)

Thanks,
Siddharth


On 9/21/06, Alessandro Negri < negri@xxxxxxxxxxx> wrote:

        I'm just doing like this: in my refreshVisuals method I change the
aspect of
        the PolylineConnection associated to the EditPart, but this doesn't
reflect
        in a visual change of the line. I need to force a redraw of the
view, but I
        don't know how. I tried getFigure().repaint or
getFigure().revalidate(), but
        nothing changes.
        So, the model is updated, the line associated to the Edit Part is
updated,
        but the line doesn't change its aspect. I think I need to
delete/add/refresh
        the part but I don't know how!?!?

        Regards,
                Alessandro

        -----Messaggio originale-----
        Da: gef-dev-bounces@xxxxxxxxxxx [mailto: gef-dev-bounces@xxxxxxxxxxx
<mailto: gef-dev-bounces@xxxxxxxxxxx> ] Per
        conto di Siddharth Shankar
        Inviato: giovedì 21 settembre 2006 10.27
        A: GEF development
        Oggetto: Re: [gef-dev] How to redraw a Connection

        Hi,

        I guess you can try out the following if you haven't already given
it a
        shot.
        In the propertyChange method of transition edit part depending upon
the
        property change call the refreshVisuals method. Override the method
        refreshVisuals in transition edit part and make whatever viewer
level
        changes you wish to make, It should work out.

        On a very high level you can take a leaf out of how bendpoints are
reflected
        on the UI wherein setting the Routing Constraint in refresh Visuals
with the
        latest list of bendpoints reflects the newly added/ deleted
bendpoints.

        Thanks and Regards,
        Siddharth

        On 9/21/06, Alessandro Negri <negri@xxxxxxxxxxx> wrote:

                Hi all,
                i'm developing a multipage Editor using GEF.
                I have some blocks connected through standard Connection
objects, in
                particular I have a TransitionEditPart that extends
                AbstractConnectionEditPart.
                The TransitionEditPart draws a Polyline connection as
follows:

                PolylineConnection c = new PolylineConnection();
                setLineAppearence(c);
                c.setConnectionRouter(new ManhattanConnectionRouter());
                // Creates a tooltip with the transition ID
                tooltip = new Label("  "+host.getID()+"  ");
                tooltip.setOpaque(true);
                c.setToolTip(tooltip);
                c.setTargetDecoration(new PolylineDecoration());
                return c;

                The problem is that I have 5 types of transitions and
everyone has
        its own
                color and appearence (I set this with the setLineAppearence
method).
        The
                TransitionEditPart is associated to a PropertySheet that
shows its
        type.
                When I change the type in the Property View, I update the
model and
        then
                fire a property change event, caught by the propertyChange
method of
        my
                TransitionEditPart.
                So...the question: how can I force the Connection to be
redrawn? I
        tried all
                the repaint, revalidate, refresh methods, but the visual
aspect of
        the edit
                part never changes according to the the modified property. I
think
        that a
                solution could be to delete the Connection and then redraw
it, but
        I'm not
                able to do that...

                Any suggestion?

                In general which is the best way to do a graphical refresh
of an
        Edit Part
                after a property change event? My solution in other cases
was to
                delete/add/refresh the part...

                Thanks in advance,
                        Alessandro

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        --
        Thanks,
        Siddharth

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Thanks,
Siddharth

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-- 
Thanks,
Siddharth