Bug 1930676 - Part 7: Implement NotificationChild::FrozenCallback r=asuth

Differential Revision: https://phabricator.services.mozilla.com/D228897

dom/notification/NotificationChild.cpp

@@ -15,15 +15,24 @@ namespace mozilla::dom::notification {
 
 using IPCResult = mozilla::ipc::IPCResult;
 
+NS_IMPL_ISUPPORTS(NotificationChild, nsISupports);
+
 NotificationChild::NotificationChild(Notification* aNonPersistentNotification,
                                      WindowGlobalChild* aWindow)
-    : mNonPersistentNotification(aNonPersistentNotification),
-      mWindow(aWindow) {}
+    : mNonPersistentNotification(aNonPersistentNotification), mWindow(aWindow) {
+  if (mWindow) {
+    BindToOwner(mWindow->GetWindowGlobal()->AsGlobal());
+    return;
+  }
+}
 
 // Step 2 of https://notifications.spec.whatwg.org/#activating-a-notification
 // MOZ_CAN_RUN_SCRIPT_BOUNDARY because of DispatchEvent (boundary for now, bug
 // 1748910) and FocusWindow.
 // Bug 1539864 for IPDL not able to handle MOZ_CAN_RUN_SCRIPT.
+//
+// Note that FrozenCallback below makes sure we don't do anything here on
+// bfcached page.
 MOZ_CAN_RUN_SCRIPT_BOUNDARY IPCResult NotificationChild::RecvNotifyClick() {
   // Step 2.1: Let intoFocus be the result of firing an event named click on the
   // Notification object representing notification, with its cancelable
@@ -64,4 +73,14 @@ void NotificationChild::ActorDestroy(ActorDestroyReason aWhy) {
   }
 }
 
+void NotificationChild::FrozenCallback(nsIGlobalObject* aOwner) {
+  // Make sure the closure below won't dispatch close event and still allow
+  // explicit close() call.
+  mNonPersistentNotification = nullptr;
+  // Closing on FrozenCallback makes sure that clicking the notification opens a
+  // new tab instead of pinging an inactive tab
+  Close();
+  DisconnectFreezeObserver();
+}
+
 }  // namespace mozilla::dom::notification

dom/notification/NotificationChild.h

@@ -7,8 +7,10 @@
 #ifndef DOM_NOTIFICATION_NOTIFICATIONCHILD_H_
 #define DOM_NOTIFICATION_NOTIFICATIONCHILD_H_
 
+#include "mozilla/GlobalFreezeObserver.h"
 #include "mozilla/WeakPtr.h"
 #include "mozilla/dom/notification/PNotificationChild.h"
+#include "nsISupportsImpl.h"
 
 namespace mozilla::dom {
 class Notification;
@@ -18,10 +20,11 @@ class WindowGlobalChild;
 namespace mozilla::dom::notification {
 
 class NotificationChild final : public PNotificationChild,
+                                public GlobalFreezeObserver,
                                 public SupportsWeakPtr {
   using IPCResult = mozilla::ipc::IPCResult;
 
-  NS_INLINE_DECL_REFCOUNTING(NotificationChild)
+  NS_DECL_ISUPPORTS
 
  public:
   explicit NotificationChild(Notification* aNonPersistentNotification,
@@ -30,6 +33,7 @@ class NotificationChild final : public PNotificationChild,
   IPCResult RecvNotifyClick();
 
   void ActorDestroy(ActorDestroyReason aWhy) override;
+  void FrozenCallback(nsIGlobalObject* aOwner) override;
 
  private:
   ~NotificationChild() = default;