[Moose-dev] Design in Mondrian

Hi! One strong principle in Mondrian is to have graph elements independent of their representation. A graph element being just a wrapper of the domain object. This is what has been enforced in the VW and Pharo versions. However, this has not been completely nice and clean. For example, MOGraphElement defines #bounds, #absoluteBounds. MONode defines #translatedBy:. Shall these methods be moved into the shape? Currently, we have the following responsibilities: a graph element: - keeping a ref to its shape - managing caches - managing attributes - managing nesting of nodes and edges - layout - supporting announcement a node: - keeping a location - maintaining a zordered-list of elements to display - dedicated caches (e.g., bitmap) - rendering on a canvas an edge: - target and source node - rendering on a canvas a root: - selection box - another event management Clearly, some responsibilities are ill located. I will do soon some cleaning... Cheers, Alexandre -- _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel http://www.bergel.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;.