From e26e85a3d24d9e570a35ac20bf043d6df47f3d0f Mon Sep 17 00:00:00 2001
From: Andreas Kling <kling@serenityos.org>
Date: Mon, 27 Sep 2021 16:02:13 +0200
Subject: LibWeb: Support Document.hidden and Document.visibilityState

These just act as if the document is always visible for now.
---
 Userland/Libraries/LibWeb/DOM/Document.cpp | 12 ++++++++++++
 1 file changed, 12 insertions(+)

(limited to 'Userland/Libraries/LibWeb/DOM/Document.cpp')

diff --git a/Userland/Libraries/LibWeb/DOM/Document.cpp b/Userland/Libraries/LibWeb/DOM/Document.cpp
index 3c1dd8a464..875a36e0a4 100644
--- a/Userland/Libraries/LibWeb/DOM/Document.cpp
+++ b/Userland/Libraries/LibWeb/DOM/Document.cpp
@@ -1062,4 +1062,16 @@ Bindings::LocationObject* Document::location()
     return window().wrapper()->location_object();
 }
 
+// https://w3c.github.io/page-visibility/#hidden-attribute
+bool Document::hidden() const
+{
+    return false;
+}
+
+// https://w3c.github.io/page-visibility/#visibilitystate-attribute
+String Document::visibility_state() const
+{
+    return hidden() ? "hidden" : "visible";
+}
+
 }
-- 
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