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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 CONTENT_PUBLIC_BROWSER_DOM_STORAGE_CONTEXT_H_
#define CONTENT_PUBLIC_BROWSER_DOM_STORAGE_CONTEXT_H_
#include <string>
#include <vector>
#include "base/callback.h"
class GURL;
namespace content {
class BrowserContext;
struct LocalStorageUsageInfo;
class SessionStorageNamespace;
struct SessionStorageUsageInfo;
// Represents the per-BrowserContext Local Storage data.
class DOMStorageContext {
public:
typedef base::Callback<
void(const std::vector<LocalStorageUsageInfo>&)>
GetLocalStorageUsageCallback;
typedef base::Callback<
void(const std::vector<SessionStorageUsageInfo>&)>
GetSessionStorageUsageCallback;
// Returns a collection of origins using local storage to the given callback.
virtual void GetLocalStorageUsage(
const GetLocalStorageUsageCallback& callback) = 0;
// Returns a collection of origins using session storage to the given
// callback.
virtual void GetSessionStorageUsage(
const GetSessionStorageUsageCallback& callback) = 0;
// Deletes the local storage data for the given origin.
virtual void DeleteLocalStorage(const GURL& origin) = 0;
// Deletes the session storage data identified by |usage_info|.
virtual void DeleteSessionStorage(
const SessionStorageUsageInfo& usage_info) = 0;
// If this is called, sessionStorage data will be stored on disk, and can be
// restored after a browser restart (with RecreateSessionStorage). This
// function must be called right after DOMStorageContextWrapper is created,
// and before it's used.
virtual void SetSaveSessionStorageOnDisk() = 0;
// Creates a SessionStorageNamespace with the given |persistent_id|. Used
// after tabs are restored by session restore. When created, the
// SessionStorageNamespace with the correct |persistent_id| will be
// associated with the persisted sessionStorage data.
virtual scoped_refptr<SessionStorageNamespace> RecreateSessionStorage(
const std::string& persistent_id) = 0;
// Starts deleting sessionStorages which don't have an associated
// SessionStorageNamespace alive. Called when SessionStorageNamespaces have
// been created after a session restore, or a session restore won't happen.
virtual void StartScavengingUnusedSessionStorage() = 0;
protected:
virtual ~DOMStorageContext() {}
};
} // namespace content
#endif // CONTENT_PUBLIC_BROWSER_DOM_STORAGE_CONTEXT_H_
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