Support property aliases
Aliases now get forwarded to their "original" property name at parse time. CSSOM continues to provide access through alias getters.
We'll need to probably add `${"-webkit-foo -moz-foo" if gecko else ""}` all over the place. Might want to come up with a convenient attibute name for that (`gecko_prefix="mw"`) or something.
r? @heycam or @bholley
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animation-iteration-count property is a number instead of integer.
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This is a revised PR for #14732.
@emilio?
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This is necessary for the upcoming work in Stylo, given I plan to make MediaType
different for Servo and Gecko, and the Unknown variant doesn't fit in MediaType
to be fair, the device is never going to have any unknown media type.
Default is top-to-bottom if unset, not bottom-to-top
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Reverse linear gradient direction if not explicitly specified to match expected default behavior
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Fix linear gradient's specified form #13892
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WIP for #13892
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Implement background-position-x/y
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This is a WIP PR. Just HorizontalPosition / VerticalPosition implementations are complete. I would like to get early feedbacks about this architecture. Here's some architectural topics to consider:
- I created `HorizontalPosition` and `VerticalPosition` structs for this and used them in `Position` as well. We have decided to split `Keyword` enum, but we need them as unified for `PositionComponent` enum. So I didn't split but I can split it if we prefer to change PositionComponent as well.
- If we prefer Keyword enum like this, we can create a SubPosition(or something like this) instead of HorizontalPosition/VerticalPosition enums since only difference is 2 lines in `parse` functions. We can create a `parse_horizontal` and `parse_vertical` instead and a lot of code duplication can be cleared.
- I couldn't find a good way to use HorizontalPosition/VerticalPosition's parse functions in `Position`'s parse function. It is a bit more complicated. I'm open to suggestions :)
- I don't know much about logical keywords so do I need to do something different? I placed some comments where logical keywords are processing.
Any advice about these?
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Added image-orientation property
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Implemented as per the MDN documentation—I could not find a current CSS draft. I am not sure if this is the complete correct metadata for the longhand helper:
```
<%helpers:longhand name="image-orientation”
experimental=“True”
animatable=“False”>
```
Also I am not sure how to test this and would appreciate help in creating a testing strategy.
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* `LonghandId` and `ShorthandId` are C-like enums
* `Atom` is used for the name of custom properties.
* `PropertyDeclarationId` is the identifier for `PropertyDeclaration`,
after parsing and shorthand expansion. (Longhand or custom property.)
* `PropertyId` represents any CSS property, e.g. in CSSOM.
(Longhand, shorthand, or custom.)
Using these instead of strings avoids some memory allocations and copies.
Treat top-level number in calc() invalid
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This should probably considered as a temporary fix (for [bug 1321206](https://bugzilla.mozilla.org/show_bug.cgi?id=1321206)), to avoid assertion when trying to serialize calc value with only numbers. Certain properties (e.g. `line-height`) would eventually need to keep numbers inside calc.
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Currently, CalcLengthOrPercentage doesn't actually keep the number value. If we don't treat it invalid, we can end up generating empty `calc()` value when one contains numbers (e.g. `calc(1)`), which would violate assertion elsewhere that `calc` must not be empty.
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Currently, CalcLengthOrPercentage doesn't actually keep the number
value, so if we don't treat it invalid, we can end up generating empty
`calc()` value when one contains top-level numbers (e.g. `calc(1)`),
which would violate assertion elsewhere that `calc` must not be empty.
Convert column-width to use Either
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* Converted column-width to use `Either<Length, Auto>`
* Added gecko glue code
* Cleaned up old column-width glue code
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fix test-tidy errors
fix style unit test
use the Parse trait instead of ParseWithContext
fix stylo test and geckolib build
move all specified url parse code to parse trait and remove refs to unused type
failing test for correct to_css of "width"
separate test for mq and to_css
implement css serialization for Eq
remove PASS test expectation
remove FIXME
simplify serialization
Only allow border-image-outset to use non-negative numbers.
Restricts border-image-outline to only allow positive values.
Fixes#14295
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CSSOM: Make Stylesheet fields have their own synchronization
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r? @upsuper
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