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style: Treat empty root margin as zero as per spec

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Differential Revision: https://phabricator.services.mozilla.com/D130131
This commit is contained in:
Emilio Cobos Álvarez 2023-05-30 20:43:32 +02:00 • committed by Oriol Brufau
parent 285c645b78
commit 04776cd116
1 changed files with 5 additions and 0 deletions
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5
components/style/values/specified/gecko.rs
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@ -49,6 +49,11 @@ impl Parse for IntersectionObserverRootMargin {
context: &ParserContext, context: &ParserContext,
input: &mut Parser<'i, 't>, input: &mut Parser<'i, 't>,
) -> Result<Self, ParseError<'i>> { ) -> Result<Self, ParseError<'i>> {
use crate::Zero;
if input.is_exhausted() {
// If there are zero elements in tokens, set tokens to ["0px"].
return Ok(IntersectionObserverRootMargin(Rect::all(LengthPercentage::zero())));
}
let rect = Rect::parse_with(context, input, parse_pixel_or_percent)?; let rect = Rect::parse_with(context, input, parse_pixel_or_percent)?;
Ok(IntersectionObserverRootMargin(rect)) Ok(IntersectionObserverRootMargin(rect))
} }