Intent to Implement and ship : Implement DragEvent and move MouseEvent.dataTransfer to DragEvent

[jinch...@navercorp.com]

Contact emails

jinch...@navercorp.com

Spec

https://html.spec.whatwg.org/multipage/interaction.html#dragevent

Summary

Implement DragEvent and move MouseEvent.dataTransfer to DragEvent.

Motivation

Gecko alreay has the DragEvent interface and has the dataTransfer attribute only on that interface.

Compatibility risk

Gecko is already doing this. So it is unlikely to be problematic.

Ongoing technical constraints

None.

Will this feature be supported on all six Blink platforms (Windows, Mac, Linux, Chrome OS, Android, and Android WebView)?

Yes.

OWP launch tracking bug?

http://crbug.com/498504

Requesting approval to ship?

Yes

[Rick Byers]

I support this.  It's a nice spec conformance and code clean-up (removes useless 'dataTransfer' attribute from MouseEvent) and brings us into line with Mozilla.  The risk seems very low, but like for other event properties we can't really tell from use counter data.

[Philip Jägenstedt]

LGTM

There is a bit of a spec issue here, around both DragEvent and ClipboardEvent:
https://www.w3.org/Bugs/Public/show_bug.cgi?id=28984
https://github.com/w3c/clipboard-apis/issues/10

If anyone has input please comment on the GitHub issue, but either way
I trust it won't get in the way. A somewhat likely outcome is that the
DragEvent constructor won't change at all.

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[TAMURA, Kent]

LGTM2

--

TAMURA Kent
Software Engineer, Google

[Chris Harrelson]

LGTM3