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RE: [ve-dev] IContainmentHandler and IConstraintHandler
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Hi
Rich,
In
Swing VE, the same class implements IContainmenthandler and
IConstraintHandler.
Can I
have separate classes for above?
I
tried this: ModelAdapter class implements IContainmentHandler. An iner class of
ULCComponentGraphicalEditPart implements IConstraintHandler and getAdapter()
method returns this object whenever the framework needs an
IConstraintHandler.
But I
have a problem:
Suppose I add a button to a frame. The button has text defined from
contributeToDropRequest. Then I drag the button out of the frame on to the
canvas. Two things happen:
1. The
button loses the text that was set on it.
2. As
a result its size shrinks
3. I
can no longer resize the button on the canvas (seems like I am losing some
adapters too).
Can
you tell me what is wrong? Why should the button lose its text? Can you please
give me a bigger picture of what has changed in this context w.r.t
1.1?
Thanks
and regards,
Janak
Hi,
On a drop there is no
graphical edit part yet, it hasn't been dropped yet to have a graphical
editpart (size on drop happens BEFORE the part is actually added to the
model). Because of that there is no editpart to ask to get the
IConstraintHandler, so it must instead ask the model adapter which is based
upon the type of the child. The jfc.AbstractComponentModelContainmentHandler already implements IConstraintHandler. If you have
your own version of jfc.AbstractComponentModelContainmentHandler then you should take a look at the jfc one to see what
you need.
Thanks,
Rich
"Janak Mulani"
<janak.mulani@xxxxxxxxx>
Sent by: ve-dev-bounces@xxxxxxxxxxx
11/14/2006 11:26 AM
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Subject
| [ve-dev] IContainmentHandler and
IConstraintHandler |
|
Hi VE Team,
In VE 1.1:
1. I was defining creation policy
in override file to set title on Frame,
text on button etc. on drop on the
canvas.
2. For resize on drop, I had a IConstraintHandler
implementation in
ULCComponentGraphicalEditPart to contributSizeCommand()
etc. The
getAdapter() method of ULCComponentGraphicalEditpart used to
return that
object.
In VE 1.2:
I now define:
1.
ULCVEContainmentHandler extends
AbstractComponentModelContainmentHandler
which is specified in override as
:
modelAdapterClassname="com.canoo.ulc.visualeditor/com.canoo.ulc.visualedi
tor.propertysheet.ULCVEContainmentHandler"
This class now sets title on Frame, text on button etc. on drop on
the
canvas.
2. Now when I resize on drop, VE expects this class
to
contributeSizeCommand(). My old IConstraintHandler
in
ULCComponetGraphicalEditPart is not called any
more.
Question:
1.Should I now implement all the methods of
IConstrainHandler in
ULCVEContainmentHandler?
Basically the same
class implements IContainmentHandler and
IConstraintHandler. Is this
correct?
2. What should I now return in
ULCComponentGraphicalEditPart.getAdapter()
for
IConstraintHandler?
Thanks and
regards,
Janak
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