Bug 1791079 - Implement User Activation API r=dom-core,webidl,saschan…

…az,edgar

Rewrote internal user activation tree (spreading state to other elements)
logic to match HTML spec:
https://html.spec.whatwg.org/multipage/interaction.html#user-activation-processing-model

Added navigator.userActivation API to expose internal user activation.

Also fixed a WPT test to conform to spec (siblings are not activated),
see also spec issue: whatwg/html#9831

Co-authored-by: Tom Schuster <evilpiesgmail.com>

Differential Revision: https://phabricator.services.mozilla.com/D185348

UltraBlame original commit: 7c84c5fc7d0002a8bee64ebc66899437638331c6

dom/base/Document.cpp

@@ -79614,169 +79614,144 @@ NotifyUserGestureActivation
 (
 )
 {
-if
-(
 RefPtr
 <
 BrowsingContext
 >
-bc
+currentBC
 =
 GetBrowsingContext
 (
 )
-)
-{
-bc
--
->
-PreOrderWalk
-(
-[
-&
-]
-(
-BrowsingContext
-*
-aBC
-)
-{
-WindowContext
-*
-windowContext
-=
-aBC
--
->
-GetCurrentWindowContext
-(
-)
 ;
 if
 (
 !
-windowContext
+currentBC
 )
 {
 return
 ;
 }
-nsIDocShell
-*
-docShell
-=
-aBC
--
+RefPtr
+<
+WindowContext
 >
-GetDocShell
+currentWC
+=
+GetWindowContext
 (
 )
 ;
-if
-(
-!
-docShell
-)
-{
-return
-;
-}
-Document
-*
-document
-=
-docShell
+currentWC
 -
 >
-GetDocument
+NotifyUserGestureActivation
 (
 )
 ;
-if
+for
 (
-!
-document
-)
-{
-return
+WindowContext
+*
+wc
+=
+currentWC
 ;
-}
-if
-(
-NodePrincipal
-(
-)
+wc
+;
+wc
+=
+wc
 -
 >
-Equals
+GetParentWindowContext
 (
-document
--
->
-NodePrincipal
-(
-)
 )
 )
 {
-windowContext
+wc
 -
 >
 NotifyUserGestureActivation
 (
 )
 ;
 }
-}
-)
-;
-for
+currentBC
+-
+>
+PreOrderWalk
+(
+[
+&
+]
 (
+BrowsingContext
+*
 bc
+)
+{
+WindowContext
+*
+wc
 =
 bc
 -
 >
-GetParent
+GetCurrentWindowContext
 (
 )
 ;
-bc
+if
+(
+!
+wc
+)
+{
+return
 ;
-bc
+}
+WindowGlobalChild
+*
+wgc
 =
-bc
+wc
 -
 >
-GetParent
+GetWindowGlobalChild
 (
 )
-)
-{
+;
 if
 (
-WindowContext
-*
-windowContext
-=
-bc
+!
+wgc
+|
+|
+!
+wgc
 -
 >
-GetCurrentWindowContext
+IsSameOriginWith
 (
+currentWC
 )
 )
 {
-windowContext
+return
+;
+}
+wc
 -
 >
 NotifyUserGestureActivation
 (
 )
 ;
 }
-}
-}
+)
+;
 }
 bool
 Document

dom/base/Navigator.cpp

@@ -432,6 +432,17 @@ mozilla
 /
 dom
 /
+UserActivation
+.
+h
+"
+#
+include
+"
+mozilla
+/
+dom
+/
 VRDisplay
 .
 h
@@ -1021,6 +1032,10 @@ mLocks
 )
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE
 (
+mUserActivation
+)
+NS_IMPL_CYCLE_COLLECTION_TRAVERSE
+(
 mWindow
 )
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE
@@ -1264,6 +1279,10 @@ mLocks
 nullptr
 ;
 }
+mUserActivation
+=
+nullptr
+;
 mSharePromise
 =
 nullptr
@@ -11117,4 +11136,42 @@ aContext
 )
 ;
 }
+already_AddRefed
+<
+UserActivation
+>
+Navigator
+:
+:
+UserActivation
+(
+)
+{
+if
+(
+!
+mUserActivation
+)
+{
+mUserActivation
+=
+new
+dom
+:
+:
+UserActivation
+(
+GetWindow
+(
+)
+)
+;
+}
+return
+do_AddRef
+(
+mUserActivation
+)
+;
+}
 }

dom/base/Navigator.h

@@ -269,6 +269,9 @@ MediaCapabilities
 class
 MediaSession
 ;
+class
+UserActivation
+;
 struct
 ShareData
 ;
@@ -1159,6 +1162,14 @@ AudioContext
 aContext
 )
 ;
+already_AddRefed
+<
+UserActivation
+>
+UserActivation
+(
+)
+;
 private
 :
 void
@@ -1416,6 +1427,15 @@ LockManager
 >
 mLocks
 ;
+RefPtr
+<
+dom
+:
+:
+UserActivation
+>
+mUserActivation
+;
 }
 ;
 }