1490401 - MediaQueryList::Matches shouldn't need a pres context, but a document instead | matchMedia should work in display:none iframes

Status: RESOLVED FIXED

(Core :: CSS Parsing and Computation, defect, P3)

Comment 1

[Markus Stange [:mstange]]

This is a webcompat issue that causes some tracking scripts to fall into infinite loops, see bug 1519463.

Comment 2

[Emilio Cobos Álvarez [:emilio]]

I guess I should just fix it. I did most of the work in bug 1430608, and the plumbing is pretty annoying but nothing egregious.

Comment 3

[Emilio Cobos Álvarez [:emilio]]

Ah, this is not as easy, I know why... We need a default style to evaluate media queries. And a style right now requires a pres context.

Comment 5

[Emilio Cobos Álvarez [:emilio]]

Finally!

Comment 6

[Emilio Cobos Álvarez [:emilio]]

Attachment: Bug 1490401 - MatchMedia should work inside display: none iframes. r=heycam

Comment 7

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/f98617ff7cf5
MatchMedia should work inside display: none iframes. r=heycam

Comment 8

[Arthur Iakab [arthur_iakab]]

https://hg.mozilla.org/mozilla-central/rev/f98617ff7cf5

Comment 10

[Web Platform Test Sync Bot [:wpt-sync] (Matrix: #interop:mozilla.org)]

Created web-platform-tests PR https://github.com/web-platform-tests/wpt/pull/16488 for changes under testing/web-platform/tests

Comment 11

[Web Platform Test Sync Bot [:wpt-sync] (Matrix: #interop:mozilla.org)]

Upstream PR merged