#2 Graph models should use java.util.Iterator

[S Phelps]

The design of the Graph2DModel interface does not allow
multiple clients to get access to series data unless
the client classes coordinate their access so that
client A does not call firstSeries() whilst client B is
calling nextSeries() (Ideally the model interface
should return an instance of java.util.Iterator that
the client class can use to iterate over the serieses)

[Mark Hale]

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See 764666. All updates should be coordinated via
SwingUtilities.invokeLater(). This will be treated as a
feature request for Graph2DModel to support the Iterator
interface.

[Mark Hale]

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Moved to feature requests.

[Mark Hale]

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Possible design:
Single unified GraphModel interface {
addGraphDataListener(GraphDataListener l);
removeGraphDataListener(GraphDataListener l);
Enumeration/Iterator series();
}
With separate Data2DSeries, Data3DSeries, CategoryDataSeries
interfaces, returned by the series iterator.

Disadvantages: possible performance decrease: requires extra
object creation and casting operations.

[Mark Hale]

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Java Generics would make the Iterator run-time safe.