[news.eclipse.modeling.gmf] Re: LifeLine Figure - Sequence Diagram

[Alex Shatalin <vano@xxxxxxxxxxx>]

Hello Danilo,

> java.lang.ClassCastException: org.eclipse.draw2d.geometry.Rectangle cannot 
be cast to java.lang.Integer
> 	at org.eclipse.draw2d.BorderLayout.setConstraint(BorderLayout.java:273)
The problem is â you are trying to add child element into the figure with 
BorderLayout (âGeralâ rectangle). 

By default Rectangle instance is used as a constraint in 	
> at org.eclipse.gmf.runtime.diagram.ui.editparts.ShapeEditPart.refreshBounds(ShapeEditPart.java:177)

So, you have to either modify refreshBounds() of the EditPart representing 
parent element (object on sequence diagram) or specify no layout managers 
for the figure used as a container of child elements (I think you can compose 
âlifelineâ from several transparent rectangles securing the line drawn in 
the center of figure and providing one more empty rectangle filling whole 
space without any layout manager inside to be used as a child container).

-----------------
Alex Shatalin