[news.eclipse.tools.gef] selectAddedObject() throws NullPointerException

[Barry Andrews <bandrews@xxxxxxxxxxxxxxxx>]

Hello,
	I think this is probably a bug, but I would like to confirm with the 
experts here before logging. I have overridden CreationTool to provide 
additional functionality to performCreation() method. My class looks 
like this:

public class DECreationTool extends CreationTool
{
    /**
     *
     */
    public DECreationTool()
    {
        super();
    }

    /**
     * @param aFactory
     */
    public DECreationTool(CreationFactory aFactory)
    {
        super(aFactory);
    }


    /* (non-Javadoc)
     * @see org.eclipse.gef.tools.CreationTool#performCreation(int)
     */
    protected void performCreation(int button)
    {
        CreateCommand command = (CreateCommand)this.getCommand(); 

        if(command.preExecute())
        {
            this.setCurrentCommand(command);
            try
            {
                super.performCreation(button);
            }
            catch(NullPointerException $ne)
            {
                //TODO I only get this problem on Linux. It happens when
                // selectAddedObject() is called.
                ;
            }
        }
    }
}

All the preExecute() method does is gets some information from the user 
via a dialog and returns true/false based on whether or not the 
information was valid.

The problem is when selectAddedObject() method is called, the 
EditPartViewer from getCurrentViewer() is null.

This only happens on Linux. It works fine on Windows. Is it obvious I am 
doing something wrong here, or is it a bug in the framework?

many thanks,

Barry