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style: Implement the inset-block/inline shorthands.
Bug: 1520229
Reviewed-by: emilio
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Mats Palmgren authored and emilio committed Jan 20, 2019
1 parent 92b58ad commit 3018437
Showing 1 changed file with 43 additions and 0 deletions.
43 changes: 43 additions & 0 deletions components/style/properties/shorthands/position.mako.rs
Expand Up @@ -762,3 +762,46 @@
}
}
</%helpers:shorthand>

% for axis in ["block", "inline"]:
<%
spec = "https://drafts.csswg.org/css-logical/#propdef-inset-%s" % axis
%>
<%helpers:shorthand
name="inset-${axis}"
sub_properties="${' '.join(
'inset-%s-%s' % (axis, side)
for side in ['start', 'end']
)}"
spec="${spec}">

use crate::parser::Parse;
use crate::values::specified::length::LengthPercentageOrAuto;
pub fn parse_value<'i, 't>(
context: &ParserContext,
input: &mut Parser<'i, 't>,
) -> Result<Longhands, ParseError<'i>> {
let start_value = LengthPercentageOrAuto::parse(context, input)?;
let end_value =
input.try(|input| LengthPercentageOrAuto::parse(context, input)).unwrap_or_else(|_| start_value.clone());

Ok(expanded! {
inset_${axis}_start: start_value,
inset_${axis}_end: end_value,
})
}

impl<'a> ToCss for LonghandsToSerialize<'a> {
fn to_css<W>(&self, dest: &mut CssWriter<W>) -> fmt::Result where W: fmt::Write {
self.inset_${axis}_start.to_css(dest)?;

if self.inset_${axis}_end != self.inset_${axis}_start {
dest.write_str(" ")?;
self.inset_${axis}_end.to_css(dest)?;
}

Ok(())
}
}
</%helpers:shorthand>
% endfor

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