byang wrote: > So, do Gecko use different rendering tree for different media?
Yes. > If so, we can just use the same document without any clone. We do that right now, but the problem is that printing is not a synchronous operation and problems can arise if the DOM mutates during printing. > pseudo-class such as visited, link, hover and etc. can be dealt on > the DOM tree, I think. Sure. Those aren't really relevant here. > But, pseudo-element indeed cause some problems > because they are not presented in the DOM tree directly like other > real elements. But, I think the nsStyleContext can be placed on the > FrameTree for these pseudo-elements. And right now it's placed on the frametree in all cases... which is conceptually simpler than having it on the DOM tree for some cases and on the frametree in others. In particular, most frame operations don't have to worry about whether the frame represents a pseudo-element or not. -Boris _______________________________________________ dev-tech-layout mailing list [email protected] https://lists.mozilla.org/listinfo/dev-tech-layout
