OLD | NEW |
---|---|
(Empty) | |
1 // Copyright (c) 2013 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_EXTENSIONS_GLOBAL_SHORTCUT_LISTENER_H_ | |
6 #define CHROME_BROWSER_EXTENSIONS_GLOBAL_SHORTCUT_LISTENER_H_ | |
7 | |
8 #include "base/observer_list.h" | |
9 #include "ui/base/keycodes/keyboard_codes.h" | |
zhchbin
2013/09/20 07:49:23
This file has been moved from base to events. s/ba
| |
10 | |
11 namespace ui { | |
12 class Accelerator; | |
13 } | |
14 | |
15 namespace extensions { | |
16 | |
17 // Platform-neutral implementation of a class that keeps track of observers and | |
18 // monitors keystrokes. It relays messages to the appropriate observers when a | |
19 // global shortcut has been struck by the user. | |
20 class GlobalShortcutListener { | |
21 public: | |
22 class Observer { | |
23 public: | |
24 // Called when your global shortcut (|accelerator|) is struck. | |
25 virtual void OnKeyPressed(const ui::Accelerator& accelerator) = 0; | |
26 }; | |
27 | |
28 virtual ~GlobalShortcutListener(); | |
29 | |
30 static GlobalShortcutListener* GetInstance(); | |
31 | |
32 // Implemented by platform-specific implementations of this class. | |
33 virtual void StartHooking() = 0; | |
34 virtual void StopHooking() = 0; | |
zhchbin
2013/09/20 07:49:23
Hooking seems a little window-specific. How about
Finnur
2013/09/20 13:01:12
Good point.
On 2013/09/20 07:49:23, zhchbin wrote
| |
35 | |
36 // Register an observer for when a certain |accelerator| is struck. | |
37 void RegisterAccelerator( | |
38 const ui::Accelerator& accelerator, Observer* observer); | |
39 // Stop listening for the given |accelerator|. | |
40 void UnregisterAccelerator( | |
41 const ui::Accelerator& accelerator, Observer* observer); | |
42 | |
43 protected: | |
44 GlobalShortcutListener(); | |
45 | |
46 // Called by platform specific implementations of this class whenever a key | |
47 // is struck. Returns true if there are observers listening for the given | |
48 // |accelerator|, false otherwise. | |
49 bool NotifyKeyPressed(const ui::Accelerator& accelerator); | |
50 | |
51 private: | |
52 typedef ObserverList<Observer> Observers; | |
53 typedef std::map< ui::Accelerator, Observers* > AcceleratorMap; | |
54 AcceleratorMap accelerator_map_; | |
55 | |
56 DISALLOW_COPY_AND_ASSIGN(GlobalShortcutListener); | |
57 }; | |
58 | |
59 } // namespace extensions | |
60 | |
61 #endif // CHROME_BROWSER_EXTENSIONS_GLOBAL_SHORTCUT_LISTENER_H_ | |
OLD | NEW |