88 lines
2.7 KiB
C++
88 lines
2.7 KiB
C++
// Copyright (c) 2010 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef _DOM_STORAGE_NAMESPACE_H
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#define _DOM_STORAGE_NAMESPACE_H
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#include "dom_storage_common.h"
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#include "base/hash_tables.h"
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#include "base/memory/scoped_ptr.h"
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#include "base/string16.h"
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#include "third_party/WebKit/Source/WebKit/chromium/public/WebString.h"
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class DOMStorageArea;
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class DOMStorageContext;
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class FilePath;
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namespace WebKit {
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class WebStorageArea;
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class WebStorageNamespace;
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}
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// Only to be used on the WebKit thread.
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class DOMStorageNamespace {
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public:
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static DOMStorageNamespace* CreateLocalStorageNamespace(
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DOMStorageContext* dom_storage_context, const FilePath& data_dir_path);
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static DOMStorageNamespace* CreateSessionStorageNamespace(
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DOMStorageContext* dom_storage_context, int64 namespace_id);
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~DOMStorageNamespace();
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DOMStorageArea* GetStorageArea(const string16& origin,
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bool allocation_allowed);
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DOMStorageNamespace* Copy(int64 clone_namespace_id);
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void GetStorageAreas(std::vector<DOMStorageArea*>& areas,
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bool skip_empty) const;
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void PurgeMemory();
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const DOMStorageContext* dom_storage_context() const {
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return dom_storage_context_;
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}
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int64 id() const { return id_; }
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const WebKit::WebString& data_dir_path() const { return data_dir_path_; }
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DOMStorageType dom_storage_type() const { return dom_storage_type_; }
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// Creates a WebStorageArea for the given origin. This should only be called
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// by an owned DOMStorageArea.
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WebKit::WebStorageArea* CreateWebStorageArea(const string16& origin);
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private:
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// Called by the static factory methods above.
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DOMStorageNamespace(DOMStorageContext* dom_storage_context,
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int64 id,
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const WebKit::WebString& data_dir_path,
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DOMStorageType storage_type);
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// Creates the underlying WebStorageNamespace on demand.
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void CreateWebStorageNamespaceIfNecessary();
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// All the storage areas we own.
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typedef base::hash_map<string16, DOMStorageArea*> OriginToStorageAreaMap;
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OriginToStorageAreaMap origin_to_storage_area_;
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// The DOMStorageContext that owns us.
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DOMStorageContext* dom_storage_context_;
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// The WebKit storage namespace we manage.
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scoped_ptr<WebKit::WebStorageNamespace> storage_namespace_;
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// Our id. Unique to our parent context class.
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int64 id_;
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// The path used to create us, so we can recreate our WebStorageNamespace on
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// demand.
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WebKit::WebString data_dir_path_;
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// SessionStorage vs. LocalStorage.
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const DOMStorageType dom_storage_type_;
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DISALLOW_IMPLICIT_CONSTRUCTORS(DOMStorageNamespace);
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};
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#endif // _DOM_STORAGE_NAMESPACE_H
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