LibWeb: Add HTMLAnchorElement.referrerPolicy property

2 files changed, 61 insertions, 0 deletions

diff --git a/Userland/Libraries/LibWeb/ReferrerPolicy/ReferrerPolicy.cpp b/Userland/Libraries/LibWeb/ReferrerPolicy/ReferrerPolicy.cpp
new file mode 100644
index 0000000000..51309409c5
--- /dev/null
+++ b/Userland/Libraries/LibWeb/ReferrerPolicy/ReferrerPolicy.cpp
@@ -0,0 +1,55 @@
+/*
+ * Copyright (c) 2023, Sam Atkins <atkinssj@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <LibWeb/ReferrerPolicy/ReferrerPolicy.h>
+
+namespace Web::ReferrerPolicy {
+
+StringView to_string(ReferrerPolicy referrer_policy)
+{
+    switch (referrer_policy) {
+    case ReferrerPolicy::NoReferrer:
+        return "no-referrer"sv;
+    case ReferrerPolicy::NoReferrerWhenDowngrade:
+        return "no-referrer-when-downgrade"sv;
+    case ReferrerPolicy::SameOrigin:
+        return "same-origin"sv;
+    case ReferrerPolicy::Origin:
+        return "origin"sv;
+    case ReferrerPolicy::StrictOrigin:
+        return "strict-origin"sv;
+    case ReferrerPolicy::OriginWhenCrossOrigin:
+        return "origin-when-cross-origin"sv;
+    case ReferrerPolicy::StrictOriginWhenCrossOrigin:
+        return "strict-origin-when-cross-origin"sv;
+    case ReferrerPolicy::UnsafeURL:
+        return "unsafe-url"sv;
+    }
+    VERIFY_NOT_REACHED();
+}
+
+Optional<ReferrerPolicy> from_string(StringView string)
+{
+    if (string.equals_ignoring_ascii_case("no-referrer"sv))
+        return ReferrerPolicy::NoReferrer;
+    if (string.equals_ignoring_ascii_case("no-referrer-when-downgrade"sv))
+        return ReferrerPolicy::NoReferrerWhenDowngrade;
+    if (string.equals_ignoring_ascii_case("same-origin"sv))
+        return ReferrerPolicy::SameOrigin;
+    if (string.equals_ignoring_ascii_case("origin"sv))
+        return ReferrerPolicy::Origin;
+    if (string.equals_ignoring_ascii_case("strict-origin"sv))
+        return ReferrerPolicy::StrictOrigin;
+    if (string.equals_ignoring_ascii_case("origin-when-cross-origin"sv))
+        return ReferrerPolicy::OriginWhenCrossOrigin;
+    if (string.equals_ignoring_ascii_case("strict-origin-when-cross-origin"sv))
+        return ReferrerPolicy::StrictOriginWhenCrossOrigin;
+    if (string.equals_ignoring_ascii_case("unsafe-url"sv))
+        return ReferrerPolicy::UnsafeURL;
+    return {};
+}
+
+}
diff --git a/Userland/Libraries/LibWeb/ReferrerPolicy/ReferrerPolicy.h b/Userland/Libraries/LibWeb/ReferrerPolicy/ReferrerPolicy.h
index dc440e33d2..6679272e3d 100644
--- a/Userland/Libraries/LibWeb/ReferrerPolicy/ReferrerPolicy.h
+++ b/Userland/Libraries/LibWeb/ReferrerPolicy/ReferrerPolicy.h
@@ -6,6 +6,9 @@
 
 #pragma once
 
+#include <AK/Optional.h>
+#include <AK/StringView.h>
+
 namespace Web::ReferrerPolicy {
 
 // https://w3c.github.io/webappsec-referrer-policy/#enumdef-referrerpolicy
@@ -24,4 +27,7 @@ enum class ReferrerPolicy {
 // The default referrer policy is "strict-origin-when-cross-origin".
 constexpr auto DEFAULT_REFERRER_POLICY = ReferrerPolicy::StrictOriginWhenCrossOrigin;
 
+StringView to_string(ReferrerPolicy);
+Optional<ReferrerPolicy> from_string(StringView);
+
 }