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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_NAMESPACE_H_
#define CHROME_BROWSER_IN_PROCESS_WEBKIT_STORAGE_NAMESPACE_H_
#include "base/string16.h"
#include "base/hash_tables.h"
#include "base/scoped_ptr.h"
#include "chrome/common/dom_storage_type.h"
#include "third_party/WebKit/WebKit/chromium/public/WebString.h"
class DOMStorageContext;
class FilePath;
class StorageArea;
namespace WebKit {
class WebStorageArea;
class WebStorageNamespace;
}
// Only to be used on the WebKit thread.
class StorageNamespace {
public:
static StorageNamespace* CreateLocalStorageNamespace(
DOMStorageContext* dom_storage_context, const FilePath& data_dir_path);
static StorageNamespace* CreateSessionStorageNamespace(
DOMStorageContext* dom_storage_context);
~StorageNamespace();
StorageArea* GetStorageArea(const string16& origin);
StorageNamespace* Copy();
void PurgeMemory();
const DOMStorageContext* dom_storage_context() const {
return dom_storage_context_;
}
int64 id() const { return id_; }
DOMStorageType dom_storage_type() const { return dom_storage_type_; }
// Creates a WebStorageArea for the given origin. This should only be called
// by an owned StorageArea.
WebKit::WebStorageArea* CreateWebStorageArea(const string16& origin);
private:
// Called by the static factory methods above.
StorageNamespace(DOMStorageContext* dom_storage_context,
int64 id,
const WebKit::WebString& data_dir_path,
DOMStorageType storage_type);
// Creates the underlying WebStorageNamespace on demand.
void CreateWebStorageNamespaceIfNecessary();
// All the storage areas we own.
typedef base::hash_map<string16, StorageArea*> OriginToStorageAreaMap;
OriginToStorageAreaMap origin_to_storage_area_;
// The DOMStorageContext that owns us.
DOMStorageContext* dom_storage_context_;
// The WebKit storage namespace we manage.
scoped_ptr<WebKit::WebStorageNamespace> storage_namespace_;
// Our id. Unique to our parent WebKitContext class.
int64 id_;
// The path used to create us, so we can recreate our WebStorageNamespace on
// demand.
WebKit::WebString data_dir_path_;
// SessionStorage vs. LocalStorage.
const DOMStorageType dom_storage_type_;
// The quota for each storage area. Suggested by the spec.
static const unsigned kLocalStorageQuota = 5 * 1024 * 1024;
DISALLOW_IMPLICIT_CONSTRUCTORS(StorageNamespace);
};
#endif // CHROME_BROWSER_IN_PROCESS_WEBKIT_STORAGE_NAMESPACE_H_
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