accelerators_cocoa.h revision ddb351dbec246cf1fab5ec20d2d5520909041de1 
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
13template <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//
27class 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