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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_SessionStorageCache_h
#define mozilla_dom_SessionStorageCache_h
#include "mozilla/dom/LSWriteOptimizerImpl.h"
#include "nsTHashMap.h"
namespace mozilla::dom {
class SSSetItemInfo;
class SSWriteInfo;
class SessionStorageCacheChild;
/**
* Coalescing manipulation queue used by `SessionStorageCache`. Used by
* `SessionStorageCache` to buffer and coalesce manipulations before they
* are sent to the parent process.
*/
class SSWriteOptimizer final : public LSWriteOptimizer<nsAString, nsString> {
public:
void Enumerate(nsTArray<SSWriteInfo>& aWriteInfos);
};
class SessionStorageCache final {
public:
NS_INLINE_DECL_REFCOUNTING(SessionStorageCache)
SessionStorageCache();
int64_t GetOriginQuotaUsage();
uint32_t Length();
void Key(uint32_t aIndex, nsAString& aResult);
void GetItem(const nsAString& aKey, nsAString& aResult);
void GetKeys(nsTArray<nsString>& aKeys);
nsresult SetItem(const nsAString& aKey, const nsAString& aValue,
nsString& aOldValue, bool aRecordWriteInfo = true);
nsresult RemoveItem(const nsAString& aKey, nsString& aOldValue,
bool aRecordWriteInfo = true);
void Clear(bool aByUserInteraction = true, bool aRecordWriteInfo = true);
void ResetWriteInfos();
already_AddRefed<SessionStorageCache> Clone() const;
nsTArray<SSSetItemInfo> SerializeData();
nsTArray<SSWriteInfo> SerializeWriteInfos();
void DeserializeData(const nsTArray<SSSetItemInfo>& aData);
void DeserializeWriteInfos(const nsTArray<SSWriteInfo>& aInfos);
void SetActor(SessionStorageCacheChild* aActor);
SessionStorageCacheChild* Actor() const { return mActor; }
void ClearActor();
void SetLoadedOrCloned() { mLoadedOrCloned = true; }
bool WasLoadedOrCloned() const { return mLoadedOrCloned; }
private:
~SessionStorageCache();
struct DataSet {
DataSet() : mOriginQuotaUsage(0) {}
bool ProcessUsageDelta(int64_t aDelta);
nsTHashMap<nsStringHashKey, nsString> mKeys;
SSWriteOptimizer mWriteOptimizer;
int64_t mOriginQuotaUsage;
};
DataSet mDataSet;
SessionStorageCacheChild* mActor;
bool mLoadedOrCloned;
};
} // namespace mozilla::dom
#endif // mozilla_dom_SessionStorageCache_h
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