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Re: R: R: R: [gef-dev] How to redraw a Connection
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Hi,
You don't ned to have your own repaint method. I'll try to give you a step by step account of how can you go ahead and make the changes in the connection model reflect on to the connection figure (say a polyline connection)
Make the change in the Model (typically change the model in a Command)
The model method having this change should have its own fire property change method
now this property change event should be caught in Connection Edit part
In Connection Edit Part depending on the property change do a getFigure and make whatever view level changes u want to make. Don't do anything else
example
say your model fires a event CHANGE_CONN_COLOR
In your edit part propertyChange method do a
getFigure.setForegroundColor(fg) where "fg" is the changed color
when the property name is CHANGE_CONN_COLOR
Does the above steps work differenly for you?
Thanks,
Siddharth
On 9/22/06, Alessandro Negri <negri@xxxxxxxxxxx> wrote:
Thank you so much for your help...I call the superclass repaint method by
this way: getFigure().repaint()!
Do you think I need to do my own repaint method? What I need to do in my
repaint method to correctly redraw my PolyLineConnection?
Thanks in advance, this is very important for me :-)
-----Messaggio originale-----
Da: gef-dev-bounces@xxxxxxxxxxx [mailto:
gef-dev-bounces@xxxxxxxxxxx] Per
conto di Siddharth Shankar
Inviato: giovedì 21 settembre 2006 15.50
A: GEF development
Oggetto: Re: R: R: [gef-dev] How to redraw a Connection
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
<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
<mailto:
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
<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
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Thanks,
Siddharth
