Thanks Torsten for your input. Indeed, many expressed a similar interest: being able to graphically edit a graph. Cheers, Alexandre On Sep 26, 2012, at 11:03 AM, Torsten Bergmann <astares@gmx.de> wrote:

I just wonder what is necessary to use Roassal not only as a visualization engine of existing data but to give it more interactivity to create new data/shapes/connections.

An example: one can build a UML class shape and visualize the existing class hierarchy of Pharo with the current engine.

But is it possible to also hook into the engine so one can have a palette and by visually adding new nodes (here UML classes) and wire them visually to create new classes in the system and use it as a modeling tool too?

Simply said: whats required to additionally transform it into a universal diagram tool with palette for custom shapes and connections, outline, custom menues on shapes/nodes/connections to open dialogs, properties page ...

Something similar to GEF from Eclipse http://www.eclipse.org/gef/ http://www.eclipse.org/articles/Article-GEF-diagram-editor/shape.html

I'm sure this would open up lots of opportunities to build graphical applications with Pharo.

Thx T.

-- _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel http://www.bergel.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;.