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// Copyright (c) 2009 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 CHROME_BROWSER_IN_PROCESS_WEBKIT_STORAGE_AREA_H_
#define CHROME_BROWSER_IN_PROCESS_WEBKIT_STORAGE_AREA_H_
#include "base/hash_tables.h"
#include "base/nullable_string16.h"
#include "base/scoped_ptr.h"
class StorageNamespace;
namespace WebKit {
class WebStorageArea;
}
// Only use on the WebKit thread. StorageNamespace manages our registration
// with DOMStorageContext.
class StorageArea {
public:
StorageArea(const string16& origin, int64 id, StorageNamespace* owner);
~StorageArea();
unsigned Length();
NullableString16 Key(unsigned index);
NullableString16 GetItem(const string16& key);
void SetItem(const string16& key, const string16& value,
bool* quota_xception);
void RemoveItem(const string16& key);
void Clear();
void PurgeMemory();
int64 id() const { return id_; }
private:
// Creates the underlying WebStorageArea on demand.
void CreateWebStorageAreaIfNecessary();
// The origin this storage area represents.
string16 origin_;
// The storage area we wrap.
scoped_ptr<WebKit::WebStorageArea> storage_area_;
// Our storage area id. Unique to our parent WebKitContext.
int64 id_;
// The StorageNamespace that owns us.
StorageNamespace* owner_;
DISALLOW_IMPLICIT_CONSTRUCTORS(StorageArea);
};
#if defined(COMPILER_GCC)
namespace __gnu_cxx {
template<>
struct hash<StorageArea*> {
std::size_t operator()(StorageArea* const& p) const {
return reinterpret_cast<std::size_t>(p);
}
};
} // namespace __gnu_cxx
#endif
#endif // CHROME_BROWSER_IN_PROCESS_WEBKIT_STORAGE_AREA_H_
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