704423 - mousemove event should be cancelable

Status: RESOLVED FIXED

(Core :: DOM: Events, defect)

Description

[Masayuki Nakano [:masayuki] (he/him)(JST, +0900)]

mousemove event should be cancelable, see D3E spec:
http://dev.w3.org/2006/webapi/DOM-Level-3-Events/html/DOM3-Events.html#event-type-mousemove

Comment 1

[Masayuki Nakano [:masayuki] (he/him)(JST, +0900)]

Attachment: Patch

This patch doesn't change actual behavior, just changes as cancelable.

IE9 and Opera support cancelable mousemove event. However, on both of them, :hover state isn't prevented even if I prevents default of mousemove event.

And also, text selection isn't blocked by the default prevented mousemove event.

WebKit's mousemove event is not cancelable.

Comment 2

[Olli Pettay [:smaug][[e-mail]]]

Btw, I'm not sure if this is just a bug in D3E.
DOM 2 mousemove is not cancelable.

Comment 3

[Olli Pettay [:smaug][[e-mail]]]

Comment on attachment 576366 [details] [diff] [review]
Patch

You did send email to the mailing list, but did you perhaps file a 
spec bug?
Clearing r? until we know what to do with this.

Comment 4

[Masayuki Nakano [:masayuki] (he/him)(JST, +0900)]

I filed a spec bug:
https://www.w3.org/Bugs/Public/show_bug.cgi?id=17626

Comment 5

[Syoichi Tsuyuhara]

In Blink, it seems that this bug is fixed.
https://src.chromium.org/viewvc/blink?revision=157207&view=revision
https://codereview.chromium.org/23463012
https://code.google.com/p/chromium/issues/detail?id=261449

I confimed this in Chromium 31.0.1624.0 (221710)(Blink 537.36 (@157356)).

Comment 6

[Masatoshi Kimura [:emk]]

Also, the spec bug has been resolved from way back.

Comment 7

[Arkadiusz Michalski (Spirit)]

Any progress? Chrome and IE are consistent with D3E, and Firefox still with D2E. Hmm... now I see that Firefox have correct behaviour a long time ago:
https://bugzilla.mozilla.org/show_bug.cgi?id=76929 << contains a good testcase

Comment 8

[Masayuki Nakano [:masayuki] (he/him)(JST, +0900)]

Attachment: Patch

Okay, let's take this into 31 which is next ESR.

Comment 9

[Olli Pettay [:smaug][[e-mail]]]

Why should mousemove be cancelable?

Comment 10

[Olli Pettay [:smaug][[e-mail]]]

Comment on attachment 8411624 [details] [diff] [review]
Patch

Ah, hmm, selection handling might in theory need this.

Comment 11

[Masayuki Nakano [:masayuki] (he/him)(JST, +0900)]

(In reply to Olli Pettay [:smaug] from comment #9)
> Why should mousemove be cancelable?

For the odd spec change... We discussed about this in the last D3E meeting, though.

Comment 12

[Masayuki Nakano [:masayuki] (he/him)(JST, +0900)]

https://hg.mozilla.org/integration/mozilla-inbound/rev/36f02c47f4be

Comment 13

[Ryan VanderMeulen [:RyanVM]]

https://hg.mozilla.org/mozilla-central/rev/36f02c47f4be