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 <[email protected]>

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

dom/base/Document.cpp

@@ -16734,36 +16734,46 @@ BrowsingContext* Document::GetBrowsingContext() const {
 }
 
 void Document::NotifyUserGestureActivation() {
-  if (RefPtr<BrowsingContext> bc = GetBrowsingContext()) {
-    bc->PreOrderWalk([&](BrowsingContext* aBC) {
-      WindowContext* windowContext = aBC->GetCurrentWindowContext();
-      if (!windowContext) {
-        return;
-      }
+  // https://html.spec.whatwg.org/multipage/interaction.html#activation-notification
+  // 1. "Assert: document is fully active."
+  RefPtr<BrowsingContext> currentBC = GetBrowsingContext();
+  if (!currentBC) {
+    return;
+  }
 
-      nsIDocShell* docShell = aBC->GetDocShell();
-      if (!docShell) {
-        return;
-      }
+  RefPtr<WindowContext> currentWC = GetWindowContext();
+  if (!currentWC) {
+    return;
+  }
 
-      Document* document = docShell->GetDocument();
-      if (!document) {
-        return;
-      }
+  // 2. "Let windows be « document's relevant global object"
+  // Instead of assembling a list, we just call notify for wanted windows as we
+  // find them
+  currentWC->NotifyUserGestureActivation();
 
-      // XXXedgar we probably could just check `IsInProcess()` after fission
-      // enable.
-      if (NodePrincipal()->Equals(document->NodePrincipal())) {
-        windowContext->NotifyUserGestureActivation();
-      }
-    });
+  // 3. "...windows with the active window of each of document's ancestor
+  // navigables."
+  for (WindowContext* wc = currentWC; wc; wc = wc->GetParentWindowContext()) {
+    wc->NotifyUserGestureActivation();
+  }
 
-    for (bc = bc->GetParent(); bc; bc = bc->GetParent()) {
-      if (WindowContext* windowContext = bc->GetCurrentWindowContext()) {
-        windowContext->NotifyUserGestureActivation();
-      }
+  // 4. "windows with the active window of each of document's descendant
+  // navigables, filtered to include only those navigables whose active
+  // document's origin is same origin with document's origin"
+  currentBC->PreOrderWalk([&](BrowsingContext* bc) {
+    WindowContext* wc = bc->GetCurrentWindowContext();
+    if (!wc) {
+      return;
     }
-  }
+
+    // Check same-origin as current document
+    WindowGlobalChild* wgc = wc->GetWindowGlobalChild();
+    if (!wgc || !wgc->IsSameOriginWith(currentWC)) {
+      return;
+    }
+
+    wc->NotifyUserGestureActivation();
+  });
 }
 
 bool Document::HasBeenUserGestureActivated() {

dom/base/Navigator.cpp

@@ -54,6 +54,7 @@
 #include "mozilla/dom/StorageManager.h"
 #include "mozilla/dom/TCPSocket.h"
 #include "mozilla/dom/URLSearchParams.h"
+#include "mozilla/dom/UserActivation.h"
 #include "mozilla/dom/VRDisplay.h"
 #include "mozilla/dom/VRDisplayEvent.h"
 #include "mozilla/dom/VRServiceTest.h"
@@ -159,6 +160,7 @@ NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(Navigator)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mAddonManager)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mWebGpu)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mLocks)
+  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mUserActivation)
 
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mWindow)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mMediaKeySystemAccessManager)
@@ -245,6 +247,8 @@ void Navigator::Invalidate() {
     mLocks = nullptr;
   }
 
+  mUserActivation = nullptr;
+
   mSharePromise = nullptr;
 }
 
@@ -2288,4 +2292,11 @@ AutoplayPolicy Navigator::GetAutoplayPolicy(AudioContext& aContext) {
   return media::AutoplayPolicy::GetAutoplayPolicy(aContext);
 }
 
+already_AddRefed<UserActivation> Navigator::UserActivation() {
+  if (!mUserActivation) {
+    mUserActivation = new dom::UserActivation(GetWindow());
+  }
+  return do_AddRef(mUserActivation);
+}
+
 }  // namespace mozilla::dom

dom/base/Navigator.h

@@ -85,6 +85,7 @@ class XRSystem;
 class StorageManager;
 class MediaCapabilities;
 class MediaSession;
+class UserActivation;
 struct ShareData;
 class WindowGlobalChild;
 
@@ -249,6 +250,8 @@ class Navigator final : public nsISupports, public nsWrapperCache {
   AutoplayPolicy GetAutoplayPolicy(HTMLMediaElement& aElement);
   AutoplayPolicy GetAutoplayPolicy(AudioContext& aContext);
 
+  already_AddRefed<UserActivation> UserActivation();
+
  private:
   void ValidateShareData(const ShareData& aData, ErrorResult& aRv);
   RefPtr<MediaKeySystemAccessManager> mMediaKeySystemAccessManager;
@@ -296,6 +299,7 @@ class Navigator final : public nsISupports, public nsWrapperCache {
   RefPtr<webgpu::Instance> mWebGpu;
   RefPtr<Promise> mSharePromise;  // Web Share API related
   RefPtr<dom::LockManager> mLocks;
+  RefPtr<dom::UserActivation> mUserActivation;
 };
 
 }  // namespace mozilla::dom

dom/base/UserActivation.cpp

@@ -4,12 +4,50 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
+#include "mozilla/dom/BrowsingContext.h"
 #include "mozilla/dom/UserActivation.h"
+#include "mozilla/dom/UserActivationBinding.h"
+#include "mozilla/dom/WindowGlobalChild.h"
 
 #include "mozilla/TextEvents.h"
 
 namespace mozilla::dom {
 
+NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(UserActivation, mWindow)
+NS_IMPL_CYCLE_COLLECTING_ADDREF(UserActivation)
+NS_IMPL_CYCLE_COLLECTING_RELEASE(UserActivation)
+
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(UserActivation)
+  NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
+  NS_INTERFACE_MAP_ENTRY(nsISupports)
+NS_INTERFACE_MAP_END
+
+UserActivation::UserActivation(nsPIDOMWindowInner* aWindow)
+    : mWindow(aWindow) {}
+
+JSObject* UserActivation::WrapObject(JSContext* aCx,
+                                     JS::Handle<JSObject*> aGivenProto) {
+  return UserActivation_Binding::Wrap(aCx, this, aGivenProto);
+};
+
+// https://html.spec.whatwg.org/multipage/interaction.html#dom-useractivation-hasbeenactive
+bool UserActivation::HasBeenActive() const {
+  // The hasBeenActive getter steps are to return true if this's relevant global
+  // object has sticky activation, and false otherwise.
+
+  WindowContext* wc = mWindow->GetWindowContext();
+  return wc && wc->HasBeenUserGestureActivated();
+}
+
+// https://html.spec.whatwg.org/multipage/interaction.html#dom-useractivation-isactive
+bool UserActivation::IsActive() const {
+  // The isActive getter steps are to return true if this's relevant global
+  // object has transient activation, and false otherwise.
+
+  WindowContext* wc = mWindow->GetWindowContext();
+  return wc && wc->HasValidTransientUserGestureActivation();
+}
+
 namespace {
 
 // The current depth of user and keyboard inputs. sUserInputEventDepth

dom/base/UserActivation.h

@@ -4,16 +4,34 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
-#ifndef mozilla_dom_UserAcitvation_h
-#define mozilla_dom_UserAcitvation_h
+#ifndef mozilla_dom_UserActivation_h
+#define mozilla_dom_UserActivation_h
 
 #include "mozilla/EventForwards.h"
 #include "mozilla/TimeStamp.h"
+#include "nsCycleCollectionParticipant.h"
+#include "nsWrapperCache.h"
+#include "nsPIDOMWindow.h"
 
 namespace mozilla::dom {
 
-class UserActivation final {
+class UserActivation final : public nsISupports, public nsWrapperCache {
  public:
+  // WebIDL UserActivation
+
+  NS_DECL_CYCLE_COLLECTING_ISUPPORTS
+  NS_DECL_CYCLE_COLLECTION_WRAPPERCACHE_CLASS(UserActivation)
+
+  explicit UserActivation(nsPIDOMWindowInner* aWindow);
+
+  nsPIDOMWindowInner* GetParentObject() const { return mWindow; }
+  JSObject* WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) final;
+
+  bool HasBeenActive() const;
+  bool IsActive() const;
+
+  // End of WebIDL UserActivation
+
   enum class State : uint8_t {
     // Not activated.
     None,
@@ -64,6 +82,11 @@ class UserActivation final {
    * the epoch.
    */
   static TimeStamp LatestUserInputStart();
+
+ private:
+  ~UserActivation() = default;
+
+  nsCOMPtr<nsPIDOMWindowInner> mWindow;
 };
 
 /**
@@ -83,4 +106,4 @@ class MOZ_RAII AutoHandlingUserInputStatePusher final {
 
 }  // namespace mozilla::dom
 
-#endif  // mozilla_dom_UserAcitvation_h
+#endif  // mozilla_dom_UserActivation_h

dom/tests/mochitest/general/test_interfaces.js

@@ -1407,6 +1407,8 @@ let interfaceNamesInGlobalScope = [
   // IMPORTANT: Do not change this list without review from a DOM peer!
   { name: "URLSearchParams", insecureContext: true },
   // IMPORTANT: Do not change this list without review from a DOM peer!
+  { name: "UserActivation", insecureContext: true },
+  // IMPORTANT: Do not change this list without review from a DOM peer!
   { name: "UserProximityEvent", insecureContext: true, disabled: true },
   // IMPORTANT: Do not change this list without review from a DOM peer!
   { name: "ValidityState", insecureContext: true },

dom/webidl/Navigator.webidl

@@ -373,3 +373,8 @@ partial interface Navigator {
   [Pref="dom.media.autoplay-policy-detection.enabled"]
   AutoplayPolicy getAutoplayPolicy(AudioContext context);
 };
+
+// https://html.spec.whatwg.org/multipage/interaction.html#the-useractivation-interface
+partial interface Navigator {
+  [SameObject] readonly attribute UserActivation userActivation;
+};

dom/webidl/UserActivation.webidl

@@ -0,0 +1,14 @@
+/* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * The origin of this IDL file is
+ * https://html.spec.whatwg.org/multipage/interaction.html#the-useractivation-interface
+ */
+
+[Exposed=Window]
+interface UserActivation {
+  readonly attribute boolean hasBeenActive;
+  readonly attribute boolean isActive;
+};

dom/webidl/moz.build

@@ -981,6 +981,7 @@ WEBIDL_FILES = [
     "UIEvent.webidl",
     "URL.webidl",
     "URLSearchParams.webidl",
+    "UserActivation.webidl",
     "ValidityState.webidl",
     "VideoColorSpace.webidl",
     "VideoDecoder.webidl",

testing/web-platform/meta/html/dom/idlharness.https.html.ini

@@ -300,36 +300,6 @@ prefs: [dom.security.featurePolicy.experimental.enabled:true, dom.security.featu
   [SVGElement interface: attribute onbeforematch]
     expected: FAIL
 
-  [UserActivation interface: existence and properties of interface object]
-    expected: FAIL
-
-  [UserActivation interface object length]
-    expected: FAIL
-
-  [UserActivation interface object name]
-    expected: FAIL
-
-  [UserActivation interface: existence and properties of interface prototype object]
-    expected: FAIL
-
-  [UserActivation interface: existence and properties of interface prototype object's "constructor" property]
-    expected: FAIL
-
-  [UserActivation interface: existence and properties of interface prototype object's @@unscopables property]
-    expected: FAIL
-
-  [UserActivation interface: attribute hasBeenActive]
-    expected: FAIL
-
-  [UserActivation interface: attribute isActive]
-    expected: FAIL
-
-  [Navigator interface: attribute userActivation]
-    expected: FAIL
-
-  [Navigator interface: window.navigator must inherit property "userActivation" with the proper type]
-    expected: FAIL
-
   [SVGElement interface: attribute onbeforetoggle]
     expected: FAIL
 

testing/web-platform/meta/html/user-activation/activation-trigger-pointerevent.html.ini

@@ -1,12 +1,12 @@
 [activation-trigger-pointerevent.html?touch]
+  # A webdriver bug (Bug 1856991) does not emit touch click events internally as expected
+  bug: 1856991
   expected: TIMEOUT
   [Activation through touch pointerevent click]
     expected: TIMEOUT
 
 
 [activation-trigger-pointerevent.html?pen]
+  # Pen touch type is not supported by webdriver
   [Activation through pen pointerevent click]
     expected: FAIL
-
-
-[activation-trigger-pointerevent.html?mouse]

testing/web-platform/meta/html/user-activation/message-event-init.tentative.html.ini

@@ -2,3 +2,5 @@
   [MessageEventInit user activation not set]
     expected: FAIL
 
+  [MessageEventInit user activation set]
+    expected: FAIL

testing/web-platform/meta/html/user-activation/navigation-state-reset-crossorigin.sub.html.ini

@@ -1,4 +1,4 @@
 [navigation-state-reset-crossorigin.sub.html]
-  expected: TIMEOUT
-  [Post-navigation state reset.]
-    expected: TIMEOUT
+  # There is a webdriver bug (Bug 1856989) which breaks cross-process iframe clicks
+  expected:
+    if fission: TIMEOUT