cef/libcef/dom_storage_namespace.h

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// Copyright (c) 2010 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 CEF_LIBCEF_DOM_STORAGE_NAMESPACE_H_
#define CEF_LIBCEF_DOM_STORAGE_NAMESPACE_H_
#pragma once
#include "libcef/dom_storage_common.h"
#include <vector>
#include "base/hash_tables.h"
#include "base/memory/scoped_ptr.h"
#include "base/string16.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebString.h"
class DOMStorageArea;
class DOMStorageContext;
class FilePath;
namespace WebKit {
class WebStorageArea;
class WebStorageNamespace;
}
// Only to be used on the WebKit thread.
class DOMStorageNamespace {
public:
static DOMStorageNamespace* CreateLocalStorageNamespace(
DOMStorageContext* dom_storage_context, const FilePath& data_dir_path);
static DOMStorageNamespace* CreateSessionStorageNamespace(
DOMStorageContext* dom_storage_context, int64 namespace_id);
~DOMStorageNamespace();
DOMStorageArea* GetStorageArea(const string16& origin,
bool allocation_allowed);
DOMStorageNamespace* Copy(int64 clone_namespace_id);
void GetStorageAreas(std::vector<DOMStorageArea*>& areas,
bool skip_empty) const;
void PurgeMemory();
const DOMStorageContext* dom_storage_context() const {
return dom_storage_context_;
}
int64 id() const { return id_; }
const WebKit::WebString& data_dir_path() const { return data_dir_path_; }
DOMStorageType dom_storage_type() const { return dom_storage_type_; }
// Creates a WebStorageArea for the given origin. This should only be called
// by an owned DOMStorageArea.
WebKit::WebStorageArea* CreateWebStorageArea(const string16& origin);
private:
// Called by the static factory methods above.
DOMStorageNamespace(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, // NOLINT(build/include_what_you_use)
DOMStorageArea*> 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 context 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_;
DISALLOW_IMPLICIT_CONSTRUCTORS(DOMStorageNamespace);
};
#endif // CEF_LIBCEF_DOM_STORAGE_NAMESPACE_H_