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style: Implement label[value] and start/end cropping with CSS rather than XUL layout

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This reduces the weird interactions that can appear on menus.

This also progresses BiDi support, including for accesskeys.

Differential Revision: https://phabricator.services.mozilla.com/D161498
This commit is contained in:
Emilio Cobos Álvarez 2022-11-16 16:27:59 +00:00 • committed by Martin Robinson
parent aee17ed05c
commit 57da2712d0
2 changed files with 14 additions and 4 deletions
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5
components/style/values/generics/counters.rs
View file

@ -264,6 +264,11 @@ pub enum GenericContentItem<I> {
/// `-moz-alt-content`.
#[cfg(feature = "gecko")]
MozAltContent,
/// `-moz-label-content`.
/// This is needed to make `accesskey` work for XUL labels. It's basically
/// attr(value) otherwise.
#[cfg(feature = "gecko")]
MozLabelContent,
/// `attr([namespace? `|`]? ident)`
Attr(Attr),
/// image-set(url) | url(url)

13
components/style/values/specified/counters.rs
View file

@ -198,7 +198,7 @@ impl Parse for Content {
}
let mut content = vec![];
let mut has_alt_content = false;
let mut has_moz_keyword = false;
loop {
{
if let Ok(image) = input.try_parse(|i| Image::parse_only_url(context, i)) {
@ -249,9 +249,13 @@ impl Parse for Content {
"no-close-quote" => generics::ContentItem::NoCloseQuote,
#[cfg(feature = "gecko")]
"-moz-alt-content" => {
has_alt_content = true;
has_moz_keyword = true;
generics::ContentItem::MozAltContent
},
"-moz-label-content" if context.chrome_rules_enabled() => {
has_moz_keyword = true;
generics::ContentItem::MozLabelContent
},
_ =>{
let ident = ident.clone();
return Err(input.new_custom_error(
@ -267,8 +271,9 @@ impl Parse for Content {
},
}
}
// We don't allow to parse `-moz-alt-content in multiple positions.
if content.is_empty() || (has_alt_content && content.len() != 1) {
// We don't allow to parse `-moz-alt/label-content` in multiple
// positions.
if content.is_empty() || (has_moz_keyword && content.len() != 1) {
return Err(input.new_custom_error(StyleParseErrorKind::UnspecifiedError));
}
Ok(generics::Content::Items(content.into()))