On Tue, 2011-01-18 at 19:59 -0500, Liam R E Quin wrote: > On Fri, 2011-01-14 at 22:39 +0100, Michael Schumacher wrote: > [...] > > Martin wants to change the Undo system using the Command Pattern (see > > comment 43 of the above report, and > > http://en.wikipedia.org/wiki/Command_Pattern for an explanation of this > > pattern). > > It's a good architecture - I've used a scheme-scriptable editor once > before that had this pattern (before they were called patterns) along > with MVC, and along with scheme access to the menus, keypress events > etc., and it turned out to be very powerful. > > (when I brought it up in IRC some time ago there didn't seem to be much > support, though, so I am not sure there's agreement on it yet) I discussed this with Martin, and the outcome was to have a command layer around the core, and not make it a 1:1 match of undo operations, because undos are very atomic operation, whereas commands rather correspond to undo groups of arbitrary complexity. So there will be a connection between the two, but they can't be "merged" the way Michael's last mail suggests. ciao, --Mitch _______________________________________________ Gimp-developer mailing list Gimp-developer@xxxxxxxxxxxxxxxxxxxxxx https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-developer
