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LibWeb: Parse :before and :after pseudo-elements

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Note that this is the old CSS2 syntax, we don't support the CSS3 syntax
just yet. Also we don't actually implement the pseudo-elements, this is
really just to make the selectors distinct from the same ones without
these pseudo-elements.
This commit is contained in:
Andreas Kling 2020-12-01 15:40:20 +01:00
parent eef30bb05e
commit bbcc71fec4
3 changed files with 21 additions and 0 deletions
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6
Libraries/LibWeb/CSS/Parser/CSSParser.cpp
View file

@ -502,6 +502,7 @@ public:
return CSS::Selector::SimpleSelector { return CSS::Selector::SimpleSelector {
type, type,
CSS::Selector::SimpleSelector::PseudoClass::None, CSS::Selector::SimpleSelector::PseudoClass::None,
CSS::Selector::SimpleSelector::PseudoElement::None,
String(), String(),
CSS::Selector::SimpleSelector::AttributeMatchType::None, CSS::Selector::SimpleSelector::AttributeMatchType::None,
String(), String(),
@ -537,6 +538,7 @@ public:
CSS::Selector::SimpleSelector simple_selector { CSS::Selector::SimpleSelector simple_selector {
type, type,
CSS::Selector::SimpleSelector::PseudoClass::None, CSS::Selector::SimpleSelector::PseudoClass::None,
CSS::Selector::SimpleSelector::PseudoElement::None,
value, value,
CSS::Selector::SimpleSelector::AttributeMatchType::None, CSS::Selector::SimpleSelector::AttributeMatchType::None,
String(), String(),
@ -639,6 +641,10 @@ public:
simple_selector.pseudo_class = CSS::Selector::SimpleSelector::PseudoClass::Empty; simple_selector.pseudo_class = CSS::Selector::SimpleSelector::PseudoClass::Empty;
else if (pseudo_name.equals_ignoring_case("root")) else if (pseudo_name.equals_ignoring_case("root"))
simple_selector.pseudo_class = CSS::Selector::SimpleSelector::PseudoClass::Root; simple_selector.pseudo_class = CSS::Selector::SimpleSelector::PseudoClass::Root;
else if (pseudo_name.equals_ignoring_case("before"))
simple_selector.pseudo_element = CSS::Selector::SimpleSelector::PseudoElement::Before;
else if (pseudo_name.equals_ignoring_case("after"))
simple_selector.pseudo_element = CSS::Selector::SimpleSelector::PseudoElement::After;
} }
if (index == index_at_start) { if (index == index_at_start) {

7
Libraries/LibWeb/CSS/Selector.h
View file

@ -57,6 +57,13 @@ public:
}; };
PseudoClass pseudo_class { PseudoClass::None }; PseudoClass pseudo_class { PseudoClass::None };
enum class PseudoElement {
None,
Before,
After,
};
PseudoElement pseudo_element { PseudoElement::None };
FlyString value; FlyString value;
enum class AttributeMatchType { enum class AttributeMatchType {

8
Libraries/LibWeb/CSS/SelectorEngine.cpp
View file

@ -44,6 +44,14 @@ static bool matches_hover_pseudo_class(const DOM::Element& element)
static bool matches(const CSS::Selector::SimpleSelector& component, const DOM::Element& element) static bool matches(const CSS::Selector::SimpleSelector& component, const DOM::Element& element)
{ {
switch (component.pseudo_element) {
case CSS::Selector::SimpleSelector::PseudoElement::None:
break;
default:
// FIXME: Implement pseudo-elements.
return false;
}
switch (component.pseudo_class) { switch (component.pseudo_class) {
case CSS::Selector::SimpleSelector::PseudoClass::None: case CSS::Selector::SimpleSelector::PseudoClass::None:
break; break;