srctree

Robin Linden parent 8fc49a35 23d5eebc
style: Run selector-matching on the styled nodes

The styled node abstraction also contains a pointer to its parent, sothis enables implementing selectors that need knowledge about thetopology of the dom tree.
inlinesplit
style/style.cpp added: 19, removed: 8, total 11
@@ -24,7 +24,8 @@ bool has_class(dom::Element const &element, std::string_view needle_class) {
} // namespace
 
// TODO(robinlinden): This needs to match more things.
bool is_match(dom::Element const &element, std::string_view selector) {
bool is_match(style::StyledNode const &node, std::string_view selector) {
auto const &element = std::get<dom::Element>(node.node);
// https://developer.mozilla.org/en-US/docs/Web/CSS/Pseudo-classes
auto [selector_, psuedo_class] = util::split_once(selector, ":");
 
@@ -74,7 +75,7 @@ bool is_match(dom::Element const &element, std::string_view selector) {
}
 
std::vector<std::pair<css::PropertyId, std::string>> matching_rules(
dom::Element const &element, std::vector<css::Rule> const &stylesheet, css::MediaQuery::Context const &ctx) {
style::StyledNode const &node, std::vector<css::Rule> const &stylesheet, css::MediaQuery::Context const &ctx) {
std::vector<std::pair<css::PropertyId, std::string>> matched_rules;
 
for (auto const &rule : stylesheet) {
@@ -82,7 +83,7 @@ std::vector<std::pair<css::PropertyId, std::string>> matching_rules(
continue;
}
 
if (std::ranges::any_of(rule.selectors, [&](auto const &selector) { return is_match(element, selector); })) {
if (std::ranges::any_of(rule.selectors, [&](auto const &selector) { return is_match(node, selector); })) {
std::ranges::copy(rule.declarations, std::back_inserter(matched_rules));
}
}
@@ -109,7 +110,7 @@ void style_tree_impl(StyledNode &current,
child_node.parent = &current;
}
 
current.properties = matching_rules(*element, stylesheet, ctx);
current.properties = matching_rules(current, stylesheet, ctx);
}
} // namespace
 
 
style/style.h added: 19, removed: 8, total 11
@@ -19,10 +19,20 @@
 
namespace style {
 
bool is_match(dom::Element const &element, std::string_view selector);
bool is_match(StyledNode const &, std::string_view selector);
 
std::vector<std::pair<css::PropertyId, std::string>> matching_rules(
dom::Element const &element, std::vector<css::Rule> const &stylesheet, css::MediaQuery::Context const & = {});
StyledNode const &, std::vector<css::Rule> const &stylesheet, css::MediaQuery::Context const &);
 
inline bool is_match(dom::Element const &e, std::string_view selector) {
return is_match(StyledNode{e}, selector);
}
 
inline std::vector<std::pair<css::PropertyId, std::string>> matching_rules(dom::Element const &element,
std::vector<css::Rule> const &stylesheet,
css::MediaQuery::Context const &context = {}) {
return matching_rules(StyledNode{element}, stylesheet, context);
}
 
std::unique_ptr<StyledNode> style_tree(
dom::Node const &root, std::vector<css::Rule> const &stylesheet, css::MediaQuery::Context const & = {});