09.01.2015, 16:42, "Anne van Kesteren" <ann...@annevk.nl>: > I'm wondering if it's feasible to provide developers with the > primitive that the combination of Shadow DOM and CSS Scoping provides. > Namely a way to isolate a subtree from selector matching (of document > stylesheets, not necessarily user and user agent stylesheets) and > requiring a special selector, such as >>>, to pierce through the > boundary.
Sounds like a reasonable, and perhaps feasible thing to do, but the obvious question is "why?" The use cases I can think of are to provide the sort of thing we do with BEM today. Is the effort worth it, or are there other things I didn't think of (quite likely, given I spent multiple seconds on the question)? cheers Chaals > This is a bit different from the `all` property as that just changes > the values of all properties, it does not make a selector such as > "div" no longer match. > > So to be clear, the idea is that if you have a tree such as > > <section class=example> > <h1>Example</h1> > <div> ... </div> > </section> > > Then a simple div selector would not match the innermost div if we > isolated the section. Instead you would have to use section >>> div or > some such. Or perhaps associate a set of selectors and style > declarations with that subtree in some manner. > > -- > https://annevankesteren.nl/ -- Charles McCathie Nevile - web standards - CTO Office, Yandex cha...@yandex-team.ru - - - Find more at http://yandex.com