Re: [gef-dev] Drop EditPart from TreeViewer

[Anthony Hunter <anthonyh@xxxxxxxxxx>]

Hi Francisco,
this question can be asked on the GEF newsgroup news://news.eclipse.org/eclipse.tools.gef


Cheers...
Anthony
--
Anthony Hunter mailto:anthonyh@xxxxxxxxxx
Software Development Manager: Eclipse Open Source Components
IBM Rational Software: Aurora / Modeling Tools 
Phone: 613-591-7037

From:	Francisco P Maturana <fpmaturana@xxxxxxxxxxxxxxx>
To:	gef-dev@xxxxxxxxxxx
Date:	01/02/2007 09:07 AM
Subject:	[gef-dev] Drop EditPart from TreeViewer

---

Hello, 

I am new to this portal and trying to obtain some information about EditPart
creation. 

I have a GEF Graphical Editor with a palette and several entries. I create
the parts by selecting entries from the palette and then dropping it into
the editor. 

I would like to by pass the palette by dragging an element from a SWT TreeViewer
and dropping the element into the editor. So far, I have created a drop
listener in the GraphicalViewer component of my editor using my 'ObjectTransferDropTargetListener'
class. 

public class ObjectTransferDropTargetListener 
  extends AbstractTransferDropTargetListener  {}

I followed the LogicLabel drag and drop example to implement the factory.
However, here is where I have the problem. All my EditPart require a View
object to be passed as a parameter into the constructor.


public class ChassisShapeEditPart extends ShapeNodeEditPart {
... 
public ChassisShapeEditPart(View view) { 
               super(view);
} 
... 

} 

I do not know how to create the view object to create the EditPart. In
addition, I have read several examples about EdiPart factories and getNewObject
() use. I am confused about it use. 

Therefore, essentially, can someone help me with this problem? I would
like to catch the drop action when the mouse enters into the editor view.
I would like to extract the name of the object to be created and then create
the corresponding EditPart. The name of the EditPart is the text to be
dragged from the TreeViewer. 

I appreciate your patience reading the long message. Your help is greatly
appreciated. 

Thank you. 
Francisco_______________________________________________
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