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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 CHROME_BROWSER_EXTENSIONS_EXTENSION_DATA_DELETER_H_
#define CHROME_BROWSER_EXTENSIONS_EXTENSION_DATA_DELETER_H_
#include <string>
#include "base/ref_counted.h"
#include "chrome/browser/chrome_thread.h"
#include "chrome/browser/in_process_webkit/webkit_context.h"
#include "chrome/common/net/url_request_context_getter.h"
#include "googleurl/src/gurl.h"
#include "webkit/database/database_tracker.h"
class Extension;
class Profile;
// A helper class that takes care of removing local storage, databases and
// cookies for a given extension. This is used by
// ExtensionsService::ClearExtensionData() upon uninstalling an extension.
class ExtensionDataDeleter
: public base::RefCountedThreadSafe<ExtensionDataDeleter,
ChromeThread::DeleteOnUIThread> {
public:
ExtensionDataDeleter(Profile* profile, const GURL& extension_url);
// Start removing data. The extension should not be running when this is
// called. Cookies are deleted on the current thread, local storage and
// databases are deleted asynchronously on the webkit and file threads,
// respectively. This function must be called from the UI thread.
void StartDeleting();
private:
// Deletes the cookies for the extension. May only be called on the io
// thread.
void DeleteCookiesOnIOThread();
// Deletes the database for the extension. May only be called on the file
// thread.
void DeleteDatabaseOnFileThread();
// Deletes local storage for the extension. May only be called on the webkit
// thread.
void DeleteLocalStorageOnWebkitThread();
// The database context for deleting the database.
scoped_refptr<webkit_database::DatabaseTracker> database_tracker_;
// Provides access to the extension request context.
scoped_refptr<URLRequestContextGetter> extension_request_context_;
// The URL of the extension we're removing data for.
GURL extension_url_;
// The security origin identifier for which we're deleting stuff.
string16 origin_id_;
// Webkit context for accessing the DOM storage helper.
scoped_refptr<WebKitContext> webkit_context_;
DISALLOW_COPY_AND_ASSIGN(ExtensionDataDeleter);
};
#endif // CHROME_BROWSER_EXTENSIONS_EXTENSION_DATA_DELETER_H_
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