It is unexpected (see bug) that a -moz-box is affected by baseline alignment.
Make -moz-box be block-outside, and -moz-inline-box be inline-outside, instead
of the bespoke thing we have now.
This is more similar to everything else, and fixes the bug.
Differential Revision: https://phabricator.services.mozilla.com/D58726
This cleans up and also allows us to keep the distinction between content: none
and content: normal, which allows us to fix the computed style we return from
getComputedStyle().
Do this last bit from the resolved value instead of StyleAdjuster, because
otherwise we need to tweak every initial struct for ::before / ::after.
Differential Revision: https://phabricator.services.mozilla.com/D58276
Do the same we do for classes for now. We could be more precise and achieve a
bit more sharing with some more effort (left a comment there), but it seems
unlikely to matter in practice (and if we did that, we'd probably want to do the
same for classes).
Differential Revision: https://phabricator.services.mozilla.com/D58453
This matches the new servo layout engine too, and thus removes some #[cfg]
gunk. Just use `flow` since it doesn't simplify the layout code as much.
Differential Revision: https://phabricator.services.mozilla.com/D45973
Add support for overflow:scroll and overflow:hidden to layout_2020
This adds clipping and interactive scrolling support, but scrolling from
script is still not functional.
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Font code is the only thing that was using Au in the style system without
interfacing with Gecko, and there was no real reason for it to do so.
This slightly simplifies the code.
Differential Revision: https://phabricator.services.mozilla.com/D57248
We need to ensure the rules that override all properties for scrollbar
part elements only apply to those that are NAC (and so will be eligible
for NAC style sharing). We have some uses of non-NAC <scrollbar>
elements that should continue to inherit properties from their parents.
To avoid any changes in rule matching order that come with changing specificity,
we add a new :-moz-native-anonymous-no-specificity pseudo-class.
While we're here, we note :-moz-native-anonymous-no-specificity (and the
regular :-moz-native-anonymous pseudo-class) as not needing style
sharing cache revalidation, as we never share NAC styles.
Differential Revision: https://phabricator.services.mozilla.com/D56154
