(Trying to be more disciplined about pinging dev-platform@ about
web-exposed changes, a few other emails will come up in a bit)
Summary:
I plan to add the screenLeft and screenTop properties to the window, as
aliases of screenX and screenY respectively, mostly for compat with
other engines.
See https://github.com/w3c/csswg-drafts/issues/1091 for all the context.
Basically all other engines support it except Gecko.
Bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1498860
It's not in the spec yet, but there's a spec PR adding it waiting on
tests to be merged:
https://github.com/w3c/csswg-drafts/pull/2669
Platform coverage: All
Estimated or target release: 64
Preference behind which this will be implemented: none
Is this feature enabled by default in sandboxed iframes? Yes
DevTools bug: N/A
web-platform-tests: https://github.com/web-platform-tests/wpt/pull/13543
I've verified that my implementation passes them of course, with the fix
to them I've suggested in the review.
Is this feature restricted to secure contexts? No, this is a legacy
interop issue and as such I don't think there's any point in restricting
it to secure contexts since the aliased properties are exposed everywhere.
-- Emilio
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