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LibWeb: Implement :any-link and :local-link pseudo-class selectors

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`:any-link` matches links, whether they have been visited or not.

`:local-link` matches links to the current URL.
This commit is contained in:
Sam Atkins 2023-08-22 15:24:12 +01:00 committed by Andreas Kling
parent eb8f7b303c
commit 3af8b491b4
Notes: sideshowbarker 2024-07-16 21:42:29 +09:00 
Author: https://github.com/AtkinsSJ
Commit: https://github.com/SerenityOS/serenity/commit/3af8b491b4
Pull-request: https://github.com/SerenityOS/serenity/pull/20713
7 changed files with 41 additions and 0 deletions
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1
Tests/LibWeb/Ref/css-any-link-selector-ref.html Normal file
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@ -0,0 +1 @@
<a href="example.com" style="color: orange">Link</a>

6
Tests/LibWeb/Ref/css-any-link-selector.html Normal file
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@ -0,0 +1,6 @@
<style>
:any-link {
color: orange;
}
</style>
<a href="example.com">Link</a>

2
Tests/LibWeb/Ref/css-local-link-selector-ref.html Normal file
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@ -0,0 +1,2 @@
<a href="" style="color: orange">Local</a>
<a href="example.com">Not local</a>

7
Tests/LibWeb/Ref/css-local-link-selector.html Normal file
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@ -0,0 +1,7 @@
<style>
:local-link {
color: orange;
}
</style>
<a href="">Local</a>
<a href="example.com">Not local</a>

2
Tests/LibWeb/Ref/manifest.json
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@ -5,8 +5,10 @@
"square-flex.html": "square-ref.html",
"separate-borders-inline-table.html": "separate-borders-ref.html",
"opacity-stacking.html": "opacity-stacking-ref.html",
"css-any-link-selector.html": "css-any-link-selector-ref.html",
"css-gradient-currentcolor.html": "css-gradient-currentcolor-ref.html",
"css-lang-selector.html": "css-lang-selector-ref.html",
"css-local-link-selector.html": "css-local-link-selector-ref.html",
"css-gradients.html": "css-gradients-ref.html",
"svg-symbol.html": "svg-symbol-ref.html",
"svg-gradient-spreadMethod.html": "svg-gradient-spreadMethod-ref.html",

6
Userland/Libraries/LibWeb/CSS/PseudoClasses.json
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@ -2,6 +2,9 @@
"active": {
"argument": ""
},
"any-link": {
"argument": ""
},
"buffering": {
"argument": ""
},
@ -62,6 +65,9 @@
"link": {
"argument": ""
},
"local-link": {
"argument": ""
},
"muted": {
"argument": ""
},

17
Userland/Libraries/LibWeb/CSS/SelectorEngine.cpp
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@ -213,7 +213,24 @@ static inline bool matches_pseudo_class(CSS::Selector::SimpleSelector::PseudoCla
{
switch (pseudo_class.type) {
case CSS::PseudoClass::Link:
case CSS::PseudoClass::AnyLink:
// NOTE: AnyLink should match whether the link is visited or not, so if we ever start matching
// :visited, we'll need to handle these differently.
return matches_link_pseudo_class(element);
case CSS::PseudoClass::LocalLink: {
// The :local-link pseudo-class allows authors to style hyperlinks based on the users current location
// within a site. It represents an element that is the source anchor of a hyperlink whose target’s
// absolute URL matches the element’s own document URL. If the hyperlink’s target includes a fragment
// URL, then the fragment URL of the current URL must also match; if it does not, then the fragment
// URL portion of the current URL is not taken into account in the comparison.
if (!matches_link_pseudo_class(element))
return false;
auto document_url = element.document().url();
AK::URL target_url = element.document().parse_url(element.attribute(HTML::AttributeNames::href));
if (target_url.fragment().has_value())
return document_url.equals(target_url, AK::URL::ExcludeFragment::No);
return document_url.equals(target_url, AK::URL::ExcludeFragment::Yes);
}
case CSS::PseudoClass::Visited:
// FIXME: Maybe match this selector sometimes?
return false;