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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef WEBKIT_DOM_STORAGE_DOM_STORAGE_SESSION_H_
#define WEBKIT_DOM_STORAGE_DOM_STORAGE_SESSION_H_
#include <string>
#include "base/basictypes.h"
#include "base/memory/ref_counted.h"
#include "webkit/storage/webkit_storage_export.h"
namespace dom_storage {
class DomStorageContext;
// This refcounted class determines the lifetime of a session
// storage namespace and provides an interface to Clone() an
// existing session storage namespace. It may be used on any thread.
// See class comments for DomStorageContext for a larger overview.
class WEBKIT_STORAGE_EXPORT DomStorageSession
: public base::RefCountedThreadSafe<DomStorageSession> {
public:
// Constructs a |DomStorageSession| and allocates new IDs for it.
explicit DomStorageSession(DomStorageContext* context);
// Constructs a |DomStorageSession| and assigns |persistent_namespace_id|
// to it. Allocates a new non-persistent ID.
DomStorageSession(DomStorageContext* context,
const std::string& persistent_namespace_id);
int64 namespace_id() const { return namespace_id_; }
const std::string& persistent_namespace_id() const {
return persistent_namespace_id_;
}
void SetShouldPersist(bool should_persist);
bool should_persist() const;
bool IsFromContext(DomStorageContext* context);
DomStorageSession* Clone();
// Constructs a |DomStorageSession| by cloning
// |namespace_id_to_clone|. Allocates new IDs for it.
static DomStorageSession* CloneFrom(DomStorageContext* context,
int64 namepace_id_to_clone);
private:
friend class base::RefCountedThreadSafe<DomStorageSession>;
DomStorageSession(DomStorageContext* context,
int64 namespace_id,
const std::string& persistent_namespace_id);
~DomStorageSession();
scoped_refptr<DomStorageContext> context_;
int64 namespace_id_;
std::string persistent_namespace_id_;
bool should_persist_;
DISALLOW_IMPLICIT_CONSTRUCTORS(DomStorageSession);
};
} // namespace dom_storage
#endif // WEBKIT_DOM_STORAGE_DOM_STORAGE_SESSION_H_
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