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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_BROWSER_UI_COCOA_ACCELERATORS_COCOA_H_
6 #define CHROME_BROWSER_UI_COCOA_ACCELERATORS_COCOA_H_
7 #pragma once
8 
9 #include <map>
10 
11 #include "ui/base/models/accelerator_cocoa.h"
12 
13 template <typename T> struct DefaultSingletonTraits;
14 
15 // This class maintains a map of command_ids to AcceleratorCocoa objects (see
16 // chrome/app/chrome_command_ids.h). Currently, this only lists the commands
17 // that are used in the Wrench menu.
18 //
19 // It is recommended that this class be used as a singleton so that the key map
20 // isn't created multiple places.
21 //
22 //   #import "base/memory/singleton.h"
23 //   ...
24 //   AcceleratorsCocoa* keymap = AcceleratorsCocoa::GetInstance();
25 //   return keymap->GetAcceleratorForCommand(IDC_COPY);
26 //
27 class AcceleratorsCocoa {
28  public:
29   typedef std::map<int, ui::AcceleratorCocoa> AcceleratorCocoaMap;
30 
31   // Returns NULL if there is no accelerator for the command.
32   const ui::AcceleratorCocoa* GetAcceleratorForCommand(int command_id);
33 
34   // Returns the singleton instance.
35   static AcceleratorsCocoa* GetInstance();
36 
37  private:
38   friend struct DefaultSingletonTraits<AcceleratorsCocoa>;
39 
40   AcceleratorsCocoa();
41   ~AcceleratorsCocoa();
42 
43   AcceleratorCocoaMap accelerators_;
44 
45   DISALLOW_COPY_AND_ASSIGN(AcceleratorsCocoa);
46 };
47 
48 #endif  // CHROME_BROWSER_UI_COCOA_ACCELERATORS_COCOA_H_
49