Comment 1 Vincent Lorenzo 2010-11-19 05:31:55 EST

To provide this action, we need to modify the template.
Change in YourLinkEditPart : 
	@Override
	protected void handleNotificationEvent(Notification notification) {
		Object feature = notification.getFeature();
		if(NotationPackage.Literals.LINE_STYLE__LINE_WIDTH.equals(feature)) {
			refreshLineWidth();
		} else {
			super.handleNotificationEvent(notification);
		}
	}
/**
* to set the width defined in the notation file after opening the diagram
*/
	@Override
	public void refresh() {
		super.refresh();
		refreshLineWidth();
	}

	@Override
	protected void setLineWidth(int width) {
		((GeneralizationFigure)figure).setLineWidth(width);
		figure.repaint();
	}
	
	
In your UMLViewProvider.createYourLink_ID, adds the line : edge.setLineWidth(1);  //this action specifies the line width in the notation. It's needed!!!

In your Figure (like GeneralizationFigure), it seems me that you can delete the line setLineWidth(1); which is not useful;

Comment 2 Vincent Lorenzo 2010-11-19 05:37:16 EST

Created attachment 183459 [details]
width of Links Illustration

This is the widths provided by GMF, It's possible to have other widths easily.
The width is represented by an Integer.

Comment 3 Toni Siljamäki 2013-10-08 09:39:39 EDT

For certain DSL's a line style would also be needed,
such as dashed line or not.

Comment 4 Camille Letavernier 2014-07-22 10:29:32 EDT

This feature is now supported. If some specific links don't support it, specific bugs should be reported against each

I close the task