From ec701ec52748c77951142ff5ec52101e2a9ba440 Mon Sep 17 00:00:00 2001
From: Xidorn Quan <me@upsuper.org>
Date: Mon, 24 Oct 2016 16:10:59 +1100
Subject: [PATCH] Deny request on invisible document

Fixes #58.
---
 fullscreen.bs   | 3 +++
 fullscreen.html | 4 +++-
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/fullscreen.bs b/fullscreen.bs
index 123e230..32c6e1b 100644
--- a/fullscreen.bs
+++ b/fullscreen.bs
@@ -20,6 +20,7 @@ Boilerplate: omit feedback-header, omit conformance, omit index, omit idl-index
 <pre class=link-defaults>
 spec:dom; type:dfn; for:/; text:element
 spec:dom; type:interface; text:Document
+spec:page-visibility; type:dfn; text:hidden
 </pre>
 
 <pre class=anchors>
@@ -194,6 +195,8 @@ if all of the following are true, and false otherwise:
  <li><p><var>element</var>'s <a>node document</a> is <a>allowed to use</a> the feature indicated by
  attribute name <code>allowfullscreen</code>.
  <!-- cross-process, recursive -->
+
+ <li><p><var>element</var>'s <a>node document</a>'s <a>hidden</a> attribute returns false.
 </ul>
 
 <p>The <dfn method for=Element><code>requestFullscreen()</code></dfn> method, when invoked, must run
diff --git a/fullscreen.html b/fullscreen.html
index 623bd1c..288bf6d 100644
--- a/fullscreen.html
+++ b/fullscreen.html
@@ -71,7 +71,7 @@
    <p data-fill-with="logo"><a class="logo" href="https://whatwg.org/"> <img alt="WHATWG" height="100" src="https://resources.whatwg.org/logo-fullscreen.svg"> </a> </p>
    <hgroup>
     <h1 class="p-name no-ref" id="title">Fullscreen API</h1>
-    <h2 class="no-num no-toc no-ref heading settled" id="subtitle"><span class="content">Living Standard — Last Updated <time class="dt-updated" datetime="2016-09-30">30 September 2016</time></span></h2>
+    <h2 class="no-num no-toc no-ref heading settled" id="subtitle"><span class="content">Living Standard — Last Updated <time class="dt-updated" datetime="2016-10-24">24 October 2016</time></span></h2>
    </hgroup>
    <div data-fill-with="spec-metadata">
     <dl>
@@ -219,6 +219,8 @@ <h2 class="heading settled" data-level="4" id="api"><span class="secno">4. </spa
     <li>
      <p><var>element</var>’s <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#concept-node-document">node document</a> is <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/embedded-content.html#allowed-to-use">allowed to use</a> the feature indicated by
  attribute name <code>allowfullscreen</code>. </p>
+    <li>
+     <p><var>element</var>’s <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#concept-node-document">node document</a>’s <a data-link-type="dfn">hidden</a> attribute returns false. </p>
    </ul>
    <p>The <dfn class="idl-code" data-dfn-for="Element" data-dfn-type="method" data-export="" id="dom-element-requestfullscreen"><code>requestFullscreen()</code><a class="self-link" href="#dom-element-requestfullscreen"></a></dfn> method, when invoked, must run
 these steps: </p>