/* -*- 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_SessionStorage_h

#define mozilla_dom_SessionStorage_h

#include "Storage.h"

class nsIPrincipal;

namespace mozilla {

namespace dom {

class SessionStorageCache;

class SessionStorageManager;

class SessionStorage final : public Storage

{

public:

  NS_DECL_ISUPPORTS_INHERITED

  NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(SessionStorage, Storage)

  SessionStorage(nsPIDOMWindowInner* aWindow,

                 nsIPrincipal* aPrincipal,

                 SessionStorageCache* aCache,

                 SessionStorageManager* aManager,

                 const nsAString& aDocumentURI,

                 bool aIsPrivate);

  StorageType Type() const override { return eSessionStorage; }

  SessionStorageManager* Manager() const { return mManager; }

  SessionStorageCache* Cache() const { return mCache; }

  already_AddRefed<SessionStorage>

  Clone() const;

  int64_t GetOriginQuotaUsage() const override;

  bool IsForkOf(const Storage* aStorage) const override;

  // WebIDL

  uint32_t GetLength(nsIPrincipal& aSubjectPrincipal,

                     ErrorResult& aRv) override;

  void Key(uint32_t aIndex, nsAString& aResult,

           nsIPrincipal& aSubjectPrincipal,

           ErrorResult& aRv) override;

  void GetItem(const nsAString& aKey, nsAString& aResult,

               nsIPrincipal& aSubjectPrincipal,

               ErrorResult& aRv) override;

  void GetSupportedNames(nsTArray<nsString>& aKeys) override;

  void SetItem(const nsAString& aKey, const nsAString& aValue,

               nsIPrincipal& aSubjectPrincipal,

               ErrorResult& aRv) override;

  void RemoveItem(const nsAString& aKey,

                  nsIPrincipal& aSubjectPrincipal,

                  ErrorResult& aRv) override;

  void Clear(nsIPrincipal& aSubjectPrincipal,

             ErrorResult& aRv) override;

private:

  ~SessionStorage();

  bool ProcessUsageDelta(int64_t aDelta);

  void

  BroadcastChangeNotification(const nsAString& aKey,

                              const nsAString& aOldValue,

                              const nsAString& aNewValue);

  RefPtr<SessionStorageCache> mCache;

  RefPtr<SessionStorageManager> mManager;

  nsString mDocumentURI;

  bool mIsPrivate;

};

} // dom namespace

} // mozilla namespace

#endif //mozilla_dom_SessionStorage_h