Adding upstream version 115.7.0esr.upstream/115.7.0esr

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 103 insertions, 0 deletions

diff --git a/toolkit/components/sessionstore/SessionStoreChangeListener.h b/toolkit/components/sessionstore/SessionStoreChangeListener.h
new file mode 100644
index 0000000000..803a2137bd
--- /dev/null
+++ b/toolkit/components/sessionstore/SessionStoreChangeListener.h
@@ -0,0 +1,103 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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/. */
+
+#ifndef mozilla_dom_SessionStoreChangeListener_h
+#define mozilla_dom_SessionStoreChangeListener_h
+
+#include "ErrorList.h"
+
+#include "PLDHashTable.h"
+#include "mozilla/EnumSet.h"
+#include "nsCycleCollectionParticipant.h"
+#include "nsHashKeys.h"
+#include "nsIDOMEventListener.h"
+#include "nsIObserver.h"
+#include "nsISupports.h"
+#include "nsITimer.h"
+#include "nsINamed.h"
+#include "nsHashtablesFwd.h"
+
+#include "mozilla/EnumSet.h"
+#include "mozilla/RefPtr.h"
+#include "mozilla/Result.h"
+
+#include "mozilla/dom/WindowGlobalChild.h"
+
+namespace mozilla::dom {
+
+class BrowsingContext;
+class Element;
+class EventTarget;
+class SessionStoreChild;
+class WindowContext;
+
+class SessionStoreChangeListener final : public nsINamed,
+                                         public nsIObserver,
+                                         public nsITimerCallback,
+                                         public nsIDOMEventListener {
+ public:
+  NS_DECL_NSINAMED
+  NS_DECL_NSIOBSERVER
+  NS_DECL_NSITIMERCALLBACK
+  NS_DECL_NSIDOMEVENTLISTENER
+  NS_DECL_CYCLE_COLLECTING_ISUPPORTS
+  NS_DECL_CYCLE_COLLECTION_CLASS_AMBIGUOUS(SessionStoreChangeListener,
+                                           nsIObserver)
+
+  static already_AddRefed<SessionStoreChangeListener> Create(
+      BrowsingContext* aBrowsingContext);
+
+  void Stop();
+
+  void UpdateEventTargets();
+
+  void FlushSessionStore();
+
+  enum class Change { Input, Scroll, SessionHistory, WireFrame, Resize };
+
+  static SessionStoreChangeListener* CollectSessionStoreData(
+      WindowContext* aWindowContext, const EnumSet<Change>& aChanges);
+
+  void SetActor(SessionStoreChild* aSessionStoreChild);
+
+  void SetEpoch(uint32_t aEpoch) { mEpoch = aEpoch; }
+
+  uint32_t GetEpoch() const { return mEpoch; }
+
+  bool CollectWireframe();
+
+ private:
+  void RecordChange(WindowContext* aWindowContext, EnumSet<Change> aChanges);
+
+ public:
+  using SessionStoreChangeTable =
+      nsTHashMap<RefPtr<WindowContext>, EnumSet<Change>>;
+
+ private:
+  explicit SessionStoreChangeListener(BrowsingContext* aBrowsingContext);
+  ~SessionStoreChangeListener() = default;
+
+  void Init();
+
+  EventTarget* GetEventTarget();
+
+  void AddEventListeners();
+  void RemoveEventListeners();
+
+  void EnsureTimer();
+
+  RefPtr<BrowsingContext> mBrowsingContext;
+  RefPtr<EventTarget> mCurrentEventTarget;
+
+  uint32_t mEpoch;
+  nsCOMPtr<nsITimer> mTimer;
+  RefPtr<SessionStoreChild> mSessionStoreChild;
+  SessionStoreChangeTable mSessionStoreChanges;
+};
+
+}  // namespace mozilla::dom
+
+#endif  // mozilla_dom_SessionStoreChangeListener_h