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LibWeb/HTML: Iterate over select options in tree order

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This also saves us from iterating twice over the children, and
instead do it in a single pass.
This commit is contained in:
Shannon Booth
2025-01-26 14:34:12 +13:00
committed by Tim Ledbetter
parent 4f80c7a5f3
commit 802529bafc
3 changed files with 29 additions and 11 deletions
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23
Libraries/LibWeb/HTML/HTMLSelectElement.cpp
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@@ -203,18 +203,19 @@ Vector<GC::Root<HTMLOptionElement>> HTMLSelectElement::list_of_options() const
// and all the option element children of all the optgroup element children of the select element, in tree order.
Vector<GC::Root<HTMLOptionElement>> list;
for_each_child_of_type<HTMLOptionElement>([&](HTMLOptionElement& option_element) {
list.append(GC::make_root(option_element));
return IterationDecision::Continue;
});
for (auto* node = first_child(); node; node = node->next_sibling()) {
if (auto* maybe_option = as_if<HTMLOptionElement>(*node)) {
list.append(GC::make_root(const_cast<HTMLOptionElement&>(*maybe_option)));
continue;
}
for_each_child_of_type<HTMLOptGroupElement>([&](HTMLOptGroupElement const& optgroup_element) {
optgroup_element.for_each_child_of_type<HTMLOptionElement>([&](HTMLOptionElement& option_element) {
list.append(GC::make_root(option_element));
return IterationDecision::Continue;
});
return IterationDecision::Continue;
});
if (auto* maybe_opt_group = as_if<HTMLOptGroupElement>(node)) {
maybe_opt_group->for_each_child_of_type<HTMLOptionElement>([&](HTMLOptionElement& option_element) {
list.append(GC::make_root(option_element));
return IterationDecision::Continue;
});
}
}
return list;
}