chrome/installer/util/delete_reg_key_work_item.h

   1 // Copyright (c) 2011 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_INSTALLER_UTIL_DELETE_REG_KEY_WORK_ITEM_H_
   6 #define CHROME_INSTALLER_UTIL_DELETE_REG_KEY_WORK_ITEM_H_
   7
   8 #include <windows.h>
   9
  10 #include <string>
  11
  12 #include "base/basictypes.h"
  13 #include "base/compiler_specific.h"
  14 #include "chrome/installer/util/registry_key_backup.h"
  15 #include "chrome/installer/util/work_item.h"
  16
  17 class RegistryKeyBackup;
  18
  19 // A WorkItem subclass that deletes a registry key at the given path.  Be aware
  20 // that in the event of rollback the key's values and subkeys are restored but
  21 // the key and its subkeys take on their default security descriptors.
  22 class DeleteRegKeyWorkItem : public WorkItem {
  23  public:
  24   virtual ~DeleteRegKeyWorkItem();
  25
  26   virtual bool Do() override;
  27
  28   virtual void Rollback() override;
  29
  30  private:
  31   friend class WorkItem;
  32
  33   DeleteRegKeyWorkItem(HKEY predefined_root,
  34                        const std::wstring& path,
  35                        REGSAM wow64_access);
  36
  37   // Root key from which we delete the key. The root key can only be
  38   // one of the predefined keys on Windows.
  39   HKEY predefined_root_;
  40
  41   // Path of the key to be deleted.
  42   std::wstring path_;
  43
  44   // Whether to force 32-bit or 64-bit view of the target key.
  45   REGSAM wow64_access_;
  46
  47   // Backup of the deleted key.
  48   RegistryKeyBackup backup_;
  49
  50   DISALLOW_COPY_AND_ASSIGN(DeleteRegKeyWorkItem);
  51 };
  52
  53 #endif  // CHROME_INSTALLER_UTIL_DELETE_REG_KEY_WORK_ITEM_H_