From 4577efd50f8361ffa787d7fcba5f5894438f826c Mon Sep 17 00:00:00 2001
From: janekptacijarabaci <janekptacijarabaci@seznam.cz>
Date: Thu, 17 Aug 2017 20:21:38 +0200
Subject: Implement DOM page onvisibilitychange.

---
 dom/base/nsGkAtomList.h    | 1 +
 dom/events/EventNameList.h | 4 ++++
 dom/webidl/Document.webidl | 3 ++-
 3 files changed, 7 insertions(+), 1 deletion(-)

(limited to 'dom')

diff --git a/dom/base/nsGkAtomList.h b/dom/base/nsGkAtomList.h
index 0b76b2bea..86a6fa99c 100644
--- a/dom/base/nsGkAtomList.h
+++ b/dom/base/nsGkAtomList.h
@@ -950,6 +950,7 @@ GK_ATOM(onupdateready, "onupdateready")
 GK_ATOM(onupgradeneeded, "onupgradeneeded")
 GK_ATOM(onussdreceived, "onussdreceived")
 GK_ATOM(onversionchange, "onversionchange")
+GK_ATOM(onvisibilitychange, "onvisibilitychange")
 GK_ATOM(onvoicechange, "onvoicechange")
 GK_ATOM(onvoiceschanged, "onvoiceschanged")
 GK_ATOM(onvrdisplayconnect, "onvrdisplayconnect")
diff --git a/dom/events/EventNameList.h b/dom/events/EventNameList.h
index b1be6dd76..ba2427623 100644
--- a/dom/events/EventNameList.h
+++ b/dom/events/EventNameList.h
@@ -674,6 +674,10 @@ DOCUMENT_ONLY_EVENT(selectionchange,
                     eSelectionChange,
                     EventNameType_HTMLXUL,
                     eBasicEventClass)
+DOCUMENT_ONLY_EVENT(visibilitychange,
+                    eVisibilityChange,
+                    EventNameType_HTMLXUL,
+                    eBasicEventClass)
 
 NON_IDL_EVENT(MozMouseHittest,
               eMouseHitTest,
diff --git a/dom/webidl/Document.webidl b/dom/webidl/Document.webidl
index c895fad39..f05656e84 100644
--- a/dom/webidl/Document.webidl
+++ b/dom/webidl/Document.webidl
@@ -275,10 +275,11 @@ partial interface Document {
     object registerElement(DOMString name, optional ElementRegistrationOptions options);
 };
 
-// http://dvcs.w3.org/hg/webperf/raw-file/tip/specs/PageVisibility/Overview.html#sec-document-interface
+// https://w3c.github.io/page-visibility/#extensions-to-the-document-interface
 partial interface Document {
   readonly attribute boolean hidden;
   readonly attribute VisibilityState visibilityState;
+           attribute EventHandler onvisibilitychange;
 };
 
 // http://dev.w3.org/csswg/cssom/#extensions-to-the-document-interface
-- 
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