Re: [Openjgraph-development] Node selection events?

[Jesus M. S. Jr. <jm...@ih...>]

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The way it works is that GraphPanel implements the MouseListener and
MouseMotionListener interfaces. Thus, you will see the mouseXXX() methods on
the GraphPanel class. These methods simply delegates the actual action
depending on the state ( as in the state pattern on the GoF book ) of the
GraphPanel class.

The states are Normal, Vertex, and Edge states. These states correspond to
the three buttons ( save for the Layout button ) that you see using
GraphEditor. These states correspond to the classes GraphPanelNormalState,
GraphPanelVertexState, GraphPanelEdgeState ... all of which inherit from
GraphPanel abstract class.

Finally, these state classes passes on the mouse events to the
VisualGraphComponent ( if any ) via the processMouseEvent() and
processMouseMotionEvent() methods of the VisualGraphComponent interface.

GraphPanel ---( delegates to ) --- > state class ---- ( passes event to )
- ---> VisualGraphComponent


HTH,

John

On Mon, 30 Apr 2001 09:41, Patrick Hartling wrote:
> I am just getting started with OpenJGraph, and I was wondering if it is
> possible to know when a node in a graph is selected.  For the project I
> am working on, I would like to be able to select a node in the graph and
> have a JTable be updated based on the selection.  Thanks.
>
>  -Patrick
>
>
> Patrick L. Hartling			| Research Assistant, VRAC
> pa...@13...				| 2624 Howe Hall -- (515)294-4916
> http://www.137.org/patrick/		| http://www.vrac.iastate.edu/
>
> _______________________________________________
> Openjgraph-development mailing list
> Ope...@li...
> http://lists.sourceforge.net/lists/listinfo/openjgraph-development
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