| // Copyright (c) 2011 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_BROWSING_DATA_LOCAL_STORAGE_HELPER_H_ |
| #define CHROME_BROWSER_BROWSING_DATA_LOCAL_STORAGE_HELPER_H_ |
| #pragma once |
| |
| #include <list> |
| #include <set> |
| #include <string> |
| |
| #include "base/callback_old.h" |
| #include "base/file_path.h" |
| #include "base/memory/scoped_ptr.h" |
| #include "base/synchronization/lock.h" |
| #include "base/time.h" |
| #include "chrome/common/url_constants.h" |
| #include "googleurl/src/gurl.h" |
| |
| class Profile; |
| |
| // This class fetches local storage information in the WebKit thread, and |
| // notifies the UI thread upon completion. |
| // A client of this class need to call StartFetching from the UI thread to |
| // initiate the flow, and it'll be notified by the callback in its UI |
| // thread at some later point. |
| // The client must call CancelNotification() if it's destroyed before the |
| // callback is notified. |
| class BrowsingDataLocalStorageHelper |
| : public base::RefCountedThreadSafe<BrowsingDataLocalStorageHelper> { |
| public: |
| // Contains detailed information about local storage. |
| struct LocalStorageInfo { |
| LocalStorageInfo(); |
| LocalStorageInfo( |
| const std::string& protocol, |
| const std::string& host, |
| unsigned short port, |
| const std::string& database_identifier, |
| const std::string& origin, |
| const FilePath& file_path, |
| int64 size, |
| base::Time last_modified); |
| ~LocalStorageInfo(); |
| |
| bool IsFileSchemeData() { |
| return protocol == chrome::kFileScheme; |
| } |
| |
| std::string protocol; |
| std::string host; |
| unsigned short port; |
| std::string database_identifier; |
| std::string origin; |
| FilePath file_path; |
| int64 size; |
| base::Time last_modified; |
| }; |
| |
| explicit BrowsingDataLocalStorageHelper(Profile* profile); |
| |
| // Starts the fetching process, which will notify its completion via |
| // callback. |
| // This must be called only in the UI thread. |
| virtual void StartFetching( |
| Callback1<const std::list<LocalStorageInfo>& >::Type* callback); |
| // Cancels the notification callback (i.e., the window that created it no |
| // longer exists). |
| // This must be called only in the UI thread. |
| virtual void CancelNotification(); |
| // Requests a single local storage file to be deleted in the WEBKIT thread. |
| virtual void DeleteLocalStorageFile(const FilePath& file_path); |
| |
| protected: |
| friend class base::RefCountedThreadSafe<BrowsingDataLocalStorageHelper>; |
| virtual ~BrowsingDataLocalStorageHelper(); |
| |
| // Notifies the completion callback in the UI thread. |
| void NotifyInUIThread(); |
| |
| Profile* profile_; |
| |
| // This only mutates on the UI thread. |
| scoped_ptr<Callback1<const std::list<LocalStorageInfo>& >::Type > |
| completion_callback_; |
| |
| // Indicates whether or not we're currently fetching information: |
| // it's true when StartFetching() is called in the UI thread, and it's reset |
| // after we notified the callback in the UI thread. |
| // This only mutates on the UI thread. |
| bool is_fetching_; |
| |
| // This only mutates in the WEBKIT thread. |
| std::list<LocalStorageInfo> local_storage_info_; |
| |
| private: |
| // Enumerates all local storage files in the WEBKIT thread. |
| void FetchLocalStorageInfoInWebKitThread(); |
| // Delete a single local storage file in the WEBKIT thread. |
| void DeleteLocalStorageFileInWebKitThread(const FilePath& file_path); |
| |
| DISALLOW_COPY_AND_ASSIGN(BrowsingDataLocalStorageHelper); |
| }; |
| |
| // This class is a thin wrapper around BrowsingDataLocalStorageHelper that does |
| // not fetch its information from the local storage tracker, but gets them |
| // passed as a parameter during construction. |
| class CannedBrowsingDataLocalStorageHelper |
| : public BrowsingDataLocalStorageHelper { |
| public: |
| explicit CannedBrowsingDataLocalStorageHelper(Profile* profile); |
| |
| // Return a copy of the local storage helper. Only one consumer can use the |
| // StartFetching method at a time, so we need to create a copy of the helper |
| // everytime we instantiate a cookies tree model for it. |
| CannedBrowsingDataLocalStorageHelper* Clone(); |
| |
| // Add a local storage to the set of canned local storages that is returned |
| // by this helper. |
| void AddLocalStorage(const GURL& origin); |
| |
| // Clear the list of canned local storages. |
| void Reset(); |
| |
| // True if no local storages are currently stored. |
| bool empty() const; |
| |
| // BrowsingDataLocalStorageHelper methods. |
| virtual void StartFetching( |
| Callback1<const std::list<LocalStorageInfo>& >::Type* callback); |
| virtual void CancelNotification() {} |
| |
| private: |
| virtual ~CannedBrowsingDataLocalStorageHelper(); |
| |
| // Convert the pending local storage info to local storage info objects. |
| void ConvertPendingInfoInWebKitThread(); |
| |
| // Used to protect access to pending_local_storage_info_. |
| mutable base::Lock lock_; |
| |
| // May mutate on WEBKIT and UI threads. |
| std::set<GURL> pending_local_storage_info_; |
| |
| Profile* profile_; |
| |
| DISALLOW_COPY_AND_ASSIGN(CannedBrowsingDataLocalStorageHelper); |
| }; |
| |
| #endif // CHROME_BROWSER_BROWSING_DATA_LOCAL_STORAGE_HELPER_H_ |