public class DasCanvasStateSupport
extends java.lang.Object
DasCanvasStateSupport is a registery where objects can tell the canvas they
intend to mutate the canvas, so canvas clients should know that its result
may be incomplete. This is first introduced to support server-side
processing, where in Autoplot the Autolayout feature knows then layout is
going to be adjusted, but doesn't have enough information to perform the
function.
Also, this may be used to address bugs like
https://bugs-pw.physics.uiowa.edu/mantis/view.php?id=303,
"strange intermediate states in transitions," since canvas painting can
be halted while the change is being performed.