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/* -*- 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
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