This delegate is called if you call Element.computedStyle to attach an object to the element
that holds stylesheet information. You can rebind it to something else to return a subclass
if you want to hold more per-element extension data than the normal computed style object holds
(e.g. layout info as well).
The default is return new CssStyle(null, element.style);
This delegate is called if you call Element.computedStyle to attach an object to the element that holds stylesheet information. You can rebind it to something else to return a subclass if you want to hold more per-element extension data than the normal computed style object holds (e.g. layout info as well).
The default is return new CssStyle(null, element.style);