Examples of diva.graph.GraphEvent

diva.graph.GraphEvent
A graph event that is emitted when anything interesting happens inside a graph by way of a GraphModel. The source of a graph event is the object which caused the change to the graph model, such as a particular controller of the graph or a user algorithm.
Each graph event contains an ID and a previous value for all changes and deletions, the specifics of which are described on a case-by-case basis below. @see GraphModel @author Michael Shilman @author John Reekie @version $Id: GraphEvent.java,v 1.16 2005/07/08 19:55:01 cxh Exp $ @Pt.AcceptedRating Yellow

        } catch (Exception ex) {
            MessageHandler
                    .error("Delete failed, changeRequest was:" + moml, ex);
        }


        graphModel.dispatchGraphEvent(new GraphEvent(this,
                GraphEvent.STRUCTURE_CHANGED, graphModel.getRoot()));
    }

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                while (frames.hasNext()) {
                    BasicGraphFrame frame = (BasicGraphFrame) frames.next();
                    GraphModel graphModel = frame._getGraphController()
                            .getGraphModel();
                    graphModel
                            .dispatchGraphEvent(new GraphEvent(this,
                                    GraphEvent.STRUCTURE_CHANGED, graphModel
                                            .getRoot()));


                    if (frame._graphPanner != null) {
                        frame._graphPanner.repaint();

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            } catch (Exception ex) {
                // The link is bad... remove it.
                _linkSet.remove(link);
                link.setHead(null);
                link.setTail(null);
                dispatchGraphEvent(new GraphEvent(ActorGraphModel.this,
                        GraphEvent.STRUCTURE_CHANGED, getRoot()));
            }


            moml.append("</group>\n");
            failmoml.append("</group>\n");

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            } catch (Exception ex) {
                // The link is bad... remove it.
                _linkSet.remove(link);
                link.setHead(null);
                link.setTail(null);
                dispatchGraphEvent(new GraphEvent(ActorGraphModel.this,
                        GraphEvent.STRUCTURE_CHANGED, getRoot()));
            }


            moml.append("</group>\n");
            failmoml.append("</group>\n");

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                // Note that there is no GraphEvent dispatched here
                // if the edge is not fully connected.  This is to
                // prevent rerendering while
                // an edge is being created.
                if ((_link.getHead() != null) && (_link.getTail() != null)) {
                    dispatchGraphEvent(new GraphEvent(ActorGraphModel.this,
                            GraphEvent.STRUCTURE_CHANGED, getRoot()));
                }
            }

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        Object tail = model.getTail(edge);
        model.setTail(edge, null);
        model.setHead(edge, null);


        if (head != null) {
            GraphEvent e = new GraphEvent(eventSource,
                    GraphEvent.EDGE_HEAD_CHANGED, edge, head);
            dispatchGraphEvent(e);
        }


        if (tail != null) {
            GraphEvent e = new GraphEvent(eventSource,
                    GraphEvent.EDGE_TAIL_CHANGED, edge, tail);
            dispatchGraphEvent(e);
        }
    }

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        // update the graph model.
        if (_update()) {
            // Notify any graph listeners
            // that the graph might have
            // completely changed.
            dispatchGraphEvent(new GraphEvent(this,
                    GraphEvent.STRUCTURE_CHANGED, getRoot()));
        }
    }

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            MessageHandler.error("Change failed", exception);
        }


        // update the graph model.
        if (_update()) {
            dispatchGraphEvent(new GraphEvent(this,
                    GraphEvent.STRUCTURE_CHANGED, getRoot()));
        }
    }

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        Object head = model.getHead(edge);
        Object tail = model.getTail(edge);
        model.removeEdge(edge);


        if (head != null) {
            GraphEvent e = new GraphEvent(eventSource,
                    GraphEvent.EDGE_HEAD_CHANGED, edge, head);
            dispatchGraphEvent(e);
        }


        if (tail != null) {
            GraphEvent e = new GraphEvent(eventSource,
                    GraphEvent.EDGE_TAIL_CHANGED, edge, tail);
            dispatchGraphEvent(e);
        }
    }

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            request.setUndoable(true);
            request.addChangeListener(new ChangeListener() {
                public void changeFailed(ChangeRequest change,
                        Exception exception) {
                    // If we fail, then issue structureChanged.
                    dispatchGraphEvent(new GraphEvent(eventSource,
                            GraphEvent.STRUCTURE_CHANGED, getRoot()));
                }


                public void changeExecuted(ChangeRequest change) {
                    // If we succeed, then issue structureChanged, since
                    // this is likely connected to something.
                    dispatchGraphEvent(new GraphEvent(eventSource,
                            GraphEvent.STRUCTURE_CHANGED, getRoot()));
                }
            });
            request.setUndoable(true);
            container.requestChange(request);

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Related Classes of diva.graph.GraphEvent

diva.graph.modular.MutableModularGraphModel

ptolemy.vergil.actor.ActorGraphModel

ptolemy.vergil.actor.ActorGraphModel$LinkModel

ptolemy.vergil.actor.ActorGraphModel$LinkModel$LinkChangeListener

ptolemy.vergil.basic.AbstractBasicGraphModel

ptolemy.vergil.basic.BasicGraphFrame

ptolemy.vergil.basic.BasicGraphFrame$EditPreferencesAction

ptolemy.vergil.fsm.FSMGraphModel

ptolemy.vergil.fsm.FSMGraphModel$PortModel

ptolemy.vergil.fsm.FSMGraphModel$StateModel

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