Test purpose
- Add a new cell to a canvas
- Add some entitys to the new Cell
- Setup a drag zone using the new Cell as the zone's coordinate source
- Check that we can drag-and-drop the entitys across the new Cell
- Check that we can update the position the new Cell in the canvas display: start; handles; offset; dimensions; roll; scale; flip
- Check that we can still drag-and-drop the entitys across the new Cell
Touch test: should work as expected. TODO: not working on Samsung browser (and probably other touch devices)
Annotated code