| // 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_INSTALLER_UTIL_DELETE_REG_VALUE_WORK_ITEM_H_ |
| #define CHROME_INSTALLER_UTIL_DELETE_REG_VALUE_WORK_ITEM_H_ |
| |
| #include <windows.h> |
| |
| #include <string> |
| |
| #include "chrome/installer/util/work_item.h" |
| |
| // A WorkItem subclass that deletes a registry value with REG_SZ, REG_DWORD, or |
| // REG_QWORD type at the specified path. The value is only deleted if the target |
| // key exists. |
| class DeleteRegValueWorkItem : public WorkItem { |
| public: |
| virtual ~DeleteRegValueWorkItem(); |
| |
| virtual bool Do(); |
| |
| virtual void Rollback(); |
| |
| private: |
| friend class WorkItem; |
| |
| enum DeletionStatus { |
| // The status before Do is called. |
| DELETE_VALUE, |
| // One possible outcome after Do(). Value is deleted. |
| VALUE_DELETED, |
| // One possible outcome after Do(). Value is not found. |
| VALUE_NOT_FOUND, |
| // The status after Do() and Rollback() is called. |
| VALUE_ROLLED_BACK, |
| // Another possible outcome after Do() (when there is an error). |
| VALUE_UNCHANGED |
| }; |
| |
| DeleteRegValueWorkItem(HKEY predefined_root, const std::wstring& key_path, |
| const std::wstring& value_name); |
| |
| // Root key of the target key under which the value is set. The root key can |
| // only be one of the predefined keys on Windows. |
| HKEY predefined_root_; |
| |
| // Path of the target key under which the value is set. |
| std::wstring key_path_; |
| |
| // Name of the value to be set. |
| std::wstring value_name_; |
| |
| DeletionStatus status_; |
| |
| // Previous value. |
| DWORD previous_type_; |
| std::string previous_value_; |
| }; |
| |
| #endif // CHROME_INSTALLER_UTIL_DELETE_REG_VALUE_WORK_ITEM_H_ |