diff --git a/Userland/Libraries/LibWeb/HTML/BrowsingContext.cpp b/Userland/Libraries/LibWeb/HTML/BrowsingContext.cpp
index 8dd14cffbd..3d075fe0ea 100644
--- a/Userland/Libraries/LibWeb/HTML/BrowsingContext.cpp
+++ b/Userland/Libraries/LibWeb/HTML/BrowsingContext.cpp
@@ -748,6 +748,36 @@ bool BrowsingContext::is_ancestor_of(BrowsingContext const& other) const
return false;
}
+// https://html.spec.whatwg.org/multipage/document-sequences.html#familiar-with
+bool BrowsingContext::is_familiar_with(BrowsingContext const& other) const
+{
+ // A browsing context A is familiar with a second browsing context B if the following algorithm returns true:
+ auto const& A = *this;
+ auto const& B = other;
+
+ // 1. If A's active document's origin is same origin with B's active document's origin, then return true.
+ if (A.active_document()->origin().is_same_origin(B.active_document()->origin()))
+ return true;
+
+ // 2. If A's top-level browsing context is B, then return true.
+ if (A.top_level_browsing_context() == &B)
+ return true;
+
+ // 3. If B is an auxiliary browsing context and A is familiar with B's opener browsing context, then return true.
+ if (B.opener_browsing_context() != nullptr && A.is_familiar_with(*B.opener_browsing_context()))
+ return true;
+
+ // 4. If there exists an ancestor browsing context of B whose active document has the same origin as the active document of A, then return true.
+ // NOTE: This includes the case where A is an ancestor browsing context of B.
+ for (auto ancestor = B.parent(); ancestor; ancestor = ancestor->parent()) {
+ if (ancestor->active_document()->origin().is_same_origin(A.active_document()->origin()))
+ return true;
+ }
+
+ // 5. Return false.
+ return false;
+}
+
// https://html.spec.whatwg.org/multipage/browsing-the-web.html#snapshotting-target-snapshot-params
SandboxingFlagSet determine_the_creation_sandboxing_flags(BrowsingContext const&, JS::GCPtr)
{
diff --git a/Userland/Libraries/LibWeb/HTML/BrowsingContext.h b/Userland/Libraries/LibWeb/HTML/BrowsingContext.h
index e960072815..b731625399 100644
--- a/Userland/Libraries/LibWeb/HTML/BrowsingContext.h
+++ b/Userland/Libraries/LibWeb/HTML/BrowsingContext.h
@@ -55,6 +55,7 @@ public:
JS::GCPtr next_sibling() const;
bool is_ancestor_of(BrowsingContext const&) const;
+ bool is_familiar_with(BrowsingContext const&) const;
template
IterationDecision for_each_in_inclusive_subtree(Callback callback) const
diff --git a/Userland/Libraries/LibWeb/HTML/Navigable.cpp b/Userland/Libraries/LibWeb/HTML/Navigable.cpp
index c97a8599f4..f983d35aa8 100644
--- a/Userland/Libraries/LibWeb/HTML/Navigable.cpp
+++ b/Userland/Libraries/LibWeb/HTML/Navigable.cpp
@@ -304,6 +304,16 @@ void Navigable::set_ongoing_navigation(Variant ongoing
// https://html.spec.whatwg.org/multipage/document-sequences.html#the-rules-for-choosing-a-navigable
Navigable::ChosenNavigable Navigable::choose_a_navigable(StringView name, TokenizedFeature::NoOpener no_opener, ActivateTab)
{
+ // NOTE: Implementation for step 7 here.
+ JS::GCPtr same_name_navigable = nullptr;
+ if (!Infra::is_ascii_case_insensitive_match(name, "_blank"sv)) {
+ for (auto& n : all_navigables()) {
+ if (n->target_name() == name) {
+ same_name_navigable = n;
+ }
+ }
+ }
+
// 1. Let chosen be null.
JS::GCPtr chosen = nullptr;
@@ -333,7 +343,7 @@ Navigable::ChosenNavigable Navigable::choose_a_navigable(StringView name, Tokeni
chosen = traversable_navigable();
}
- // FIXME: 7. Otherwise, if name is not an ASCII case-insensitive match for "_blank",
+ // 7. Otherwise, if name is not an ASCII case-insensitive match for "_blank",
// there exists a navigable whose target name is the same as name, currentNavigable's
// active browsing context is familiar with that navigable's active browsing context,
// and the user agent determines that the two browsing contexts are related enough that
@@ -341,6 +351,11 @@ Navigable::ChosenNavigable Navigable::choose_a_navigable(StringView name, Tokeni
// matching navigables, the user agent should pick one in some arbitrary consistent manner,
// such as the most recently opened, most recently focused, or more closely related, and set
// chosen to it.
+ else if (same_name_navigable != nullptr && (active_browsing_context()->is_familiar_with(*same_name_navigable->active_browsing_context()))) {
+ // FIXME: Handle multiple name-match case
+ // FIXME: When are these contexts 'not related enough' ?
+ chosen = same_name_navigable;
+ }
// 8. Otherwise, a new top-level traversable is being requested, and what happens depends on the
// user agent's configuration and abilities — it is determined by the rules given for the first