[Jung-support] [jung - Open Discussion] JUNG2 tutorial and menu mouse plugin...

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By: gregbern

Hi folks I've updated/added more stuff to the running JUNG2 tutorial at
http://www.grotto-networking.com/JUNG/
In addition, based on Tom's suggestion (but probably needing a bunch of polishing)
I worked though an example with context sensitive mouse menus.  This means that
I wrote a fairly generic graph mouse plugin whose function is to bring up different
popup menus depending on whether a node or vertex is right clicked.  I copied
several of the notions from other JUNG2 code so the good ideas are from JUNG
the bad ideas are from me ;-)

Pictures of the output are given in section 5.5 of the JUNG2 (unofficial) tutorial
(pdf or odt format).

How this works is that you feed two JPopupMenus to the constructor for the new
menu mouse plugin thingy. Under the appropriate mouse click the plugin is activated
if a vertex is selected the vertex popup will be brought up, similarly for the
edge popup.  Prior to actually showing the popup the components of the popup
are scanned to see if they implement a simple "edge listener" or "vertex listener"
interface, if so they are fed the selected edge or vertex (and some support
info). Note that because mouse menus are also used for deleting edges and vertices,
I also implemented to generic (works with user defined edge/vertex) deletion
menu items that can be added to the users edge and vertex popups.

The code for this more elaborate example is in the directory
http://www.grotto-networking.com/JUNG/MouseMenu/
The one example dialog was developed with swing layout extensions (aka Netbeans).
This can be changed for more portability if there is sufficient interest in
this example/application.

Regards

Greg B.

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