Examples of ptolemy.kernel.undo.UndoChangeRequest

ptolemy.kernel.undo.UndoChangeRequest
A change request to undo. When executed, this change request will identify the undo stack associated with the specified context, and it will execute the top undo action on that stack, if there is one.
@author Edward A. Lee and Neil Smyth @version $Id: UndoChangeRequest.java,v 1.12 2005/07/08 19:59:14 cxh Exp $ @since Ptolemy II 3.1 @Pt.ProposedRating Green (eal) @Pt.AcceptedRating Green (hyzheng)

    public void undo() {
        GraphModel model = _getGraphModel();


        try {
            NamedObj toplevel = (NamedObj) model.getRoot();
            UndoChangeRequest change = new UndoChangeRequest(this, toplevel);
            toplevel.requestChange(change);
        } catch (Exception ex) {
            MessageHandler.error("Undo failed", ex);
        }
    }

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Related Classes of ptolemy.kernel.undo.UndoChangeRequest

ptolemy.vergil.basic.BasicGraphFrame

ptolemy.kernel.util.InternalErrorException

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