In addition, this controller provides graph-wide operations that allow nodes to be moved and context menus to be created. It does not provide interaction for adding or removing nodes; those are provided by a derived class. If does provide toolbar buttons for executing the model (or if this is not the top level, delegating to the top level to execute). Right-clicking on the background will create a context-sensitive menu for the graph. @author Steve Neuendorffer, Contributor: Edward A. Lee @version $Id: ActorViewerGraphController.java,v 1.40 2006/02/12 17:43:38 cxh Exp $ @since Ptolemy II 2.0 @Pt.ProposedRating Red (eal) @Pt.AcceptedRating Red (johnr)
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