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LibWeb: Add activeElement attribute in ShadowRoot

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Feng Yu 2025-02-02 22:04:01 -08:00 • committed by Tim Ledbetter
parent 0989c3cdaf
commit 66d18170c6
Notes: github-actions[bot] 2025-09-10 15:53:47 +00:00
8 changed files with 166 additions and 36 deletions
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37
Libraries/LibWeb/DOM/Document.cpp
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@ -64,6 +64,7 @@
#include <LibWeb/DOM/Document.h>
#include <LibWeb/DOM/DocumentFragment.h>
#include <LibWeb/DOM/DocumentObserver.h>
#include <LibWeb/DOM/DocumentOrShadowRoot.h>
#include <LibWeb/DOM/DocumentType.h>
#include <LibWeb/DOM/EditingHostManager.h>
#include <LibWeb/DOM/Element.h>
@ -2446,43 +2447,9 @@ String const& Document::compat_mode() const
return css1_compat;
}
// https://html.spec.whatwg.org/multipage/interaction.html#dom-documentorshadowroot-activeelement
void Document::update_active_element()
{
// 1. Let candidate be this's node document's focused area's DOM anchor.
Node* candidate = focused_area();
// 2. Set candidate to the result of retargeting candidate against this.
candidate = as<Node>(retarget(candidate, this));
// 3. If candidate's root is not this, then return null.
if (&candidate->root() != this) {
set_active_element(nullptr);
return;
}
// 4. If candidate is not a Document object, then return candidate.
if (!is<Document>(candidate)) {
set_active_element(as<Element>(candidate));
return;
}
auto* candidate_document = static_cast<Document*>(candidate);
// 5. If candidate has a body element, then return that body element.
if (candidate_document->body()) {
set_active_element(candidate_document->body());
return;
}
// 6. If candidate's document element is non-null, then return that document element.
if (candidate_document->document_element()) {
set_active_element(candidate_document->document_element());
return;
}
// 7. Return null.
set_active_element(nullptr);
set_active_element(calculate_active_element(*this));
}
void Document::set_focused_area(GC::Ptr<Node> node)