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Non-selectable connections? [message #754382]

Wed, 02 November 2011 11:50

Christian B

Messages: 68
Registered: August 2011

Member

Hi,

How can i achieve that connections are not selectable?

I tried the following, but nothing works:

connection.setActive(false) --> nothing changed
override getSelection() in ToolBehaviourProvider and return null if connection is selected --> does not work, because method is not called for selecting connections...
override getClickArea() in ToolBehaviourProvider and return null for connections --> nothing changed

thanks in advance!

[Updated on: Wed, 02 November 2011 11:50]

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Re: Non-selectable connections? [message #754466 is a reply to message #754382]

Wed, 02 November 2011 15:52

Joerg Reichert

Messages: 80
Registered: July 2009
Location: Leipzig

Member

Hi,

the getSelection() in ToolBehaviourProvider is called by org.eclipse.graphiti.ui.internal.parts.ShapeEditPart.getTargetEditPart(Request request), this is the code

	@Override
	public EditPart getTargetEditPart(Request request) {
		IConfigurationProvider configurationProvider = getConfigurationProvider();

		PictogramElement alternativeSelection = configurationProvider.getDiagramTypeProvider().getCurrentToolBehaviorProvider()
				.getSelection(getPictogramElement(), configurationProvider.getDiagramEditor().getSelectedPictogramElements());
		if (alternativeSelection != null && request instanceof SelectionRequest) {
			Object object = configurationProvider.getDiagramEditor().getGraphicalViewer().getEditPartRegistry().get(alternativeSelection);
			if (object instanceof EditPart) {
				return (EditPart) object;
			}
		}

		return super.getTargetEditPart(request);
	}

The purpose of getConnection is to return an alternative selection. If null is passed, then the actual selection is used. So a (dirty) work around would be to pass an object that is not null and no EditPart.

Regards,
Joerg

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Re: Non-selectable connections? [message #755409 is a reply to message #754466]

Tue, 08 November 2011 11:44

Christian B

Messages: 68
Registered: August 2011

Member

thanks!

Problem is getSelection doesn't work on Connections. I tried overwriting getSelection() in ToolBehaviourProvider as you proposed:

@Override
public PictogramElement getSelection(PictogramElement originalPe,
		PictogramElement[] oldSelection) {
	if(originalPe instanceof Connection)
		return Graphiti.getCreateService().createContainerShape(null, false);
	// TODO Auto-generated method stub
	return super.getSelection(originalPe, oldSelection);
}

originalPE is never a Connection, only Diagram, ContainerShapes etc.

The method getSelectionInfoForConnection(Connection connection) is responsible for Connections.
Any ideas how to get non-selectable Connections with this method?

One further requirement:
Connections should not be directly selectable by the user, but adding an element per drag and drop from the palette to an existing connection has to be possible (and in this context, the connections shall be highlighted in orange and dotted as always.

[Updated on: Tue, 08 November 2011 11:45]

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