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| 1 // Copyright (c) 2009 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 #ifndef CHROME_BROWSER_BROWSING_DATA_LOCAL_STORAGE_HELPER_H_ |
| 6 #define CHROME_BROWSER_BROWSING_DATA_LOCAL_STORAGE_HELPER_H_ |
| 7 |
| 8 #include <string> |
| 9 |
| 10 #include "base/file_path.h" |
| 11 #include "base/scoped_ptr.h" |
| 12 #include "base/task.h" |
| 13 |
| 14 class Profile; |
| 15 |
| 16 // This class fetches local storage information in the WebKit thread, and |
| 17 // notifies the UI thread upon completion. |
| 18 // A client of this class need to call StartFetching from the UI thread to |
| 19 // initiate the flow, and it'll be notified by the callback in its UI |
| 20 // thread at some later point. |
| 21 // The client must call CancelNotification() if it's destroyed before the |
| 22 // callback is notified. |
| 23 class BrowsingDataLocalStorageHelper |
| 24 : public base::RefCountedThreadSafe<BrowsingDataLocalStorageHelper> { |
| 25 public: |
| 26 // Contains detailed information about local storage. |
| 27 struct LocalStorageInfo { |
| 28 LocalStorageInfo( |
| 29 const std::string& protocol, |
| 30 const std::string& host, |
| 31 unsigned short port, |
| 32 const std::string& database_identifier, |
| 33 const std::string& origin, |
| 34 const FilePath& file_path, |
| 35 int64 size, |
| 36 base::Time last_modified) |
| 37 : protocol(protocol), |
| 38 host(host), |
| 39 port(port), |
| 40 database_identifier(database_identifier), |
| 41 origin(origin), |
| 42 file_path(file_path), |
| 43 size(size), |
| 44 last_modified(last_modified) { |
| 45 } |
| 46 |
| 47 std::string protocol; |
| 48 std::string host; |
| 49 unsigned short port; |
| 50 std::string database_identifier; |
| 51 std::string origin; |
| 52 FilePath file_path; |
| 53 int64 size; |
| 54 base::Time last_modified; |
| 55 }; |
| 56 |
| 57 explicit BrowsingDataLocalStorageHelper(Profile* profile); |
| 58 |
| 59 // Starts the fetching process, which will notify its completion via |
| 60 // callback. |
| 61 // This must be called only in the UI thread. |
| 62 virtual void StartFetching( |
| 63 Callback1<const std::vector<LocalStorageInfo>& >::Type* callback); |
| 64 // Cancels the notification callback (i.e., the window that created it no |
| 65 // longer exists). |
| 66 // This must be called only in the UI thread. |
| 67 virtual void CancelNotification(); |
| 68 // Requests a single local storage file to be deleted in the WEBKIT thread. |
| 69 virtual void DeleteLocalStorageFile(const FilePath& file_path); |
| 70 // Requests all local storage files to be deleted in the WEBKIT thread. |
| 71 virtual void DeleteAllLocalStorageFiles(); |
| 72 |
| 73 private: |
| 74 // Enumerates all local storage files in the WEBKIT thread. |
| 75 void FetchLocalStorageInfoInWebKitThread(); |
| 76 // Notifies the completion callback in the UI thread. |
| 77 void NotifyInUIThread(); |
| 78 // Delete a single local storage file in the WEBKIT thread. |
| 79 void DeleteLocalStorageFileInWebKitThread(const FilePath& file_path); |
| 80 // Delete all local storage files in the WEBKIT thread. |
| 81 void DeleteAllLocalStorageFilesInWebKitThread(); |
| 82 |
| 83 Profile* profile_; |
| 84 // This only mutates on the UI thread. |
| 85 scoped_ptr<Callback1<const std::vector<LocalStorageInfo>& >::Type > |
| 86 completion_callback_; |
| 87 // Indicates whether or not we're currently fetching information: |
| 88 // it's true when StartFetching() is called in the UI thread, and it's reset |
| 89 // after we notified the callback in the UI thread. |
| 90 // This only mutates on the UI thread. |
| 91 bool is_fetching_; |
| 92 // This only mutates in the WEBKIT thread. |
| 93 std::vector<LocalStorageInfo> local_storage_info_; |
| 94 |
| 95 DISALLOW_COPY_AND_ASSIGN(BrowsingDataLocalStorageHelper); |
| 96 }; |
| 97 |
| 98 #endif // CHROME_BROWSER_BROWSING_DATA_LOCAL_STORAGE_HELPER_H_ |
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