[Moose-dev] new Mondrian example 'changing subview layout interactively'

Just sharing a cool result of some experimentation with Mondrian. I was pleasantly surprised with what I ended up with. Contents of attached text file can be copied to Workspace. Also I've uploaded this for Mondrian Easel as Mondrian-Example-BenComan.44. cheers -ben | view b actionBlock makeMenu | view := MOViewRenderer new. "Define shape such that the MOLayout name is displayed above the subview children" b := MOFormsBuilder new. b column; fill; row; fill; row; fill . b x:1 y:1 add: ( MORectangleShape new text: [ :value | (view nodeForDomainValue: value) layout. ]; textAlignment: #center; borderColor: Color white ) . b x:1 y:2 add: ( MORectangleShape new ) . b x:1 y:2 add: ( MOChildrenShape new ) . view shape: b shape. "Define menus for setting the layouts of subviews" actionBlock := [ :selectedValue :newLayout | | element position | element := view nodeForDomainValue: selectedValue. position := element bounds origin. element layout: newLayout. element applyLayout. element resetFormCacheUpToTheRoot. element translateBy: position. view updateWindow. ]. makeMenu := [ :layout | view interaction item: (layout class name asString) action: [ :selectedValue | actionBlock value: selectedValue value: layout ]. ]. makeMenu value: (MOGridLayout new). makeMenu value: (MOBottomFlowLayout new). makeMenu value: (MOBulletTreeLayout new). makeMenu value: (MOCircleLayout new scaleBy: 6). makeMenu value: (MODominanceTreeLayout new). makeMenu value: (MOFADELayout new). makeMenu value: (MOFlowLayout new). makeMenu value: (MOForceBasedLayout new). makeMenu value: (MOHorizontalDominanceTreeLayout new). makeMenu value: (MOFlowLayout new). makeMenu value: (MODominanceTreeLayout new). makeMenu value: (MOHorizontalLineLayout new). makeMenu value: (MOHorizontalNarrowTreeLayout new). makeMenu value: (MOHorizontalTreeLayout new). makeMenu value: (MOMinimumGridLayout new). makeMenu value: (MOVerticalNarrowTreeLayout new). makeMenu value: (MORadialTreeLayout new). makeMenu value: (MOSpringLayout new). makeMenu value: (MOSugiyamaLayout new). makeMenu value: (MOTreeLayout new). makeMenu value: (MOVerticalLineLayout new). "Define some nodes and edges" view nodes: (10 to: 70 by: 10) forEach: [ :each | view shape rectangle size: 20; withText. view nodes: ( each+1 to: each+9). view edge: each+1 from: each+1 to: each+2. view edge: each+1 from: each+1 to: each+3. view edge: each+1 from: each+1 to: each+4. view edge: each+2 from: each+2 to: each+5. view edge: each+2 from: each+2 to: each+6. view edge: each+2 from: each+2 to: each+7. view edge: each+3 from: each+3 to: each+7. view edge: each+3 from: each+3 to: each+8. view edge: each+3 from: each+3 to: each+9. view circleLayout scaleBy: 6. ]. view circleLayout scaleBy: 25. view open