Attach event per react container root, rather than on the document

[chenglou]

@nathansobo will that help your event perf issues a bit? I'm not familiar with atom's plugin infrastructure, But this'll help if you have <Editor/><Plugin1/> (two renderComponents). Doesn't help if you have <Editor><Plugin1/></Editor> though, but I have some ideas to optimize events a bit more.

This is nonetheless an ok idea, I think.
@spicyj

[nathansobo]

@chenglou That would help our situation with the editor a bit, yes. But what's more important for Atom I think is the ability to integrate React with HTML custom elements without requiring the use of the shadow DOM. Seems like #1711 would help that, and it seems like this idea might be necessary to achieve that as well?

[sophiebits]

@nathansobo Can you clarify what you mean, "without requiring the use of the shadow DOM"? I'm a bit uninformed about how HTML custom elements work right now.

[syranide]

@chenglou It seems we have your #2050 to track this. Closing, reopen if you disagree :)

[sophiebits]

@syranide I don't see why we should close issues just because there's a PR open – what if we don't go with that particular implementation? We may still want to make the same fix.

[syranide]

@spicyj Fair enough :)