We achieve this by making properties that accept a custom-ident value
skip the "someone else's vendor prefix" check for values that start with
a `-` character.
This fixes an issue where e.g `font-family: Arial, -apple-system` would
be rejected by the parser completely. We now treat `-apple-system` like
an identifier in such cases.
Also add `valid-types` metadata for the `font-family` property so this
actually works. :^)
This represents the type of a calculation, which may involve multiplying
or dividing the various numeric types together (eg, length*length, or
length/time, or whatever).
For now, I've made "Return failure" in each algorithm return an empty
Optional. This may or may not be a good solution but we'll see. :^)
All of the following properties in the font shorthand can be `normal`:
- font-style
- font-variant
- font-weight
- font-stretch
This means that we must allow up to four consecutive `normal` at the
start of a font shorthand value.
Anonymous wrapper boxes inherit style from their layout tree parent,
and since style data is per-layout-node, we have to manually sync them
from parent to anonymous children when something changes.
This is not very elegant or efficient, so I've left a FIXME about
solving it in a nicer way.
This fixes horizontal dog alignment on https://waffles.dog/ :^)
`parse_a_calc_function_node()` only detects math functions, but
regularly encounters unrelated functions like `rgba()`. Since we now
support all the math functions, this message is just misleading spam.
The CSS box-shadow property takes 2-4 properties that are `<length>`s,
those being:
- offset-x
- offset-y
- blur-radius
- spread-radius
Previously these were resolved directly to concrete Lengths at parse
time, but now they will be parsed as LengthStyleValues and/or
CalculatedStyleValues and be stored that way until styles are later
resolved.
Instead of a custom struct, use an AK::Variant for flex-basis.
A flex-basis is either `content` or a CSS size value, so we don't need
anything custom for that.
By using a CSS size, we also avoid having to convert in and out of size
in various places, simplifying the code.
This finally gets rid of the "Unsupported main size for flex-basis"
debug spam. :^)
- The check for `local()` sources wasn't working, and output `local()`
every time. Since we don't parse `local()` yet, let's just always
output a regular URL source.
- Put a space between the URL and the `format()`.
- Stop double-quoting the format string.
Previously, using an identifier color like `currentColor` would fail to
parse, since we look at ident tokens (and reject unrecognised ones)
before trying to parse colors.
