On 19 Jan 2015, at 20:18, Alexandre Bergel <alexandre.bergel(a)me.com> wrote: Hi Natalia, Glad to see you around! Yes, this is easy. You can simply send #remove or #removeWithItsConnectedEdges to an element or an edge to see it removed. You can add it back by adding to the view again. Consider this example: -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= v := RTView new. v @ RTDraggableView. v addMenu: '+ shapes' callback: [ previousElements := v elements. b := RTMondrian new. b view: v. newElements := b nodes: RTShape withAllSubclasses. b edges connectFrom: #superclass. b layout tree. b build. v signalUpdate. TRConstraint move: newElements onTheRightOf: previousElements. ]. v addMenu: '+ layouts' callback: [ previousElements := v elements. b := RTMondrian new. b view: v. newElements := b nodes: RTLayout withAllSubclasses. b edges connectFrom: #superclass. b layout tree. b build. v signalUpdate. TRConstraint move: newElements onTheRightOf: previousElements. ]. v addMenu: '- layouts' callback: [ (v elements select: [ :el | el model == RTLayout or: [ el model inheritsFrom: RTLayout ] ]) do: #removeWithItsConnectedEdges. v signalUpdate ]. v addMenu: '- shapes' callback: [ (v elements select: [ :el | el model == RTShape or: [ el model inheritsFrom: RTShape ] ]) do: #removeWithItsConnectedEdges. v signalUpdate ]. v -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Cheers, Alexandre -- _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel http://www.bergel.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;. _______________________________________________ Moose-dev mailing list Moose-dev(a)iam.unibe.ch https://www.iam.unibe.ch/mailman/listinfo/moose-dev