chrome/installer/util/app_commands.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_APP_COMMANDS_H_
   6 #define CHROME_INSTALLER_UTIL_APP_COMMANDS_H_
   7
   8 #include <windows.h>
   9
  10 #include <map>
  11 #include <string>
  12 #include <utility>
  13
  14 #include "base/basictypes.h"
  15 #include "chrome/installer/util/app_command.h"
  16
  17 namespace base {
  18 namespace win {
  19 class RegKey;
  20 }
  21 }
  22
  23 namespace installer {
  24
  25 // A collection of AppCommand objects.
  26 class AppCommands {
  27  public:
  28   typedef std::map<std::wstring, AppCommand> CommandMap;
  29   typedef std::pair<CommandMap::const_iterator, CommandMap::const_iterator>
  30       CommandMapRange;
  31
  32   AppCommands();
  33   ~AppCommands();
  34
  35   // Initialize an instance from the set of commands in a given registry key
  36   // (typically the "Commands" subkey of a BrowserDistribution's "version key").
  37   // |key| must have been opened with at least
  38   // KEY_ENUMERATE_SUB_KEYS | KEY_QUERY_VALUE access rights.
  39   bool Initialize(const base::win::RegKey& key);
  40
  41   // Replaces the contents of this object with that of |other|.
  42   AppCommands& CopyFrom(const AppCommands& other);
  43
  44   // Clears this instance.
  45   void Clear();
  46
  47   // Retrieves the command identified by |command_id| from the set, copying it
  48   // into |command| and returning true if present.
  49   bool Get(const std::wstring& command_id, AppCommand* command) const;
  50
  51   // Sets a command in the collection, adding it if it doesn't already exist.
  52   // Returns true if a new command is added; false if |command_id| was already
  53   // present and has been replaced with |command|.
  54   bool Set(const std::wstring& command_id, const AppCommand& command);
  55
  56   // Removes a command from the collection.  Returns false if |command_id| was
  57   // not found.
  58   bool Remove(const std::wstring& command_id);
  59
  60   // Returns a pair of STL iterators defining the range of objects in the
  61   // collection.
  62   CommandMapRange GetIterators() const;
  63
  64  protected:
  65   CommandMap commands_;
  66
  67   DISALLOW_COPY_AND_ASSIGN(AppCommands);
  68 };
  69
  70 }  // namespace installer
  71
  72 #endif  // CHROME_INSTALLER_UTIL_APP_COMMANDS_H_