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1 // Copyright 2016 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 UI_BASE_WIN_OSK_DISPLAY_MANAGER_H_ | |
6 #define UI_BASE_WIN_OSK_DISPLAY_MANAGER_H_ | |
7 | |
8 #include "base/memory/singleton.h" | |
9 #include "base/memory/weak_ptr.h" | |
10 #include "base/observer_list.h" | |
11 #include "base/strings/string16.h" | |
12 #include "ui/base/ui_base_export.h" | |
13 #include "ui/gfx/geometry/rect.h" | |
14 | |
15 namespace ui { | |
16 | |
17 // Implemented by classes who wish to get notified about the on screen keyboard | |
18 // becoming visible/hidden. | |
19 class UI_BASE_EXPORT OnScreenKeyboardObserver { | |
sky
2016/05/19 22:25:08
Move to own header.
ananta
2016/05/19 23:15:40
Done. Was a stale declaration.
| |
20 public: | |
21 virtual ~OnScreenKeyboardObserver() {} | |
22 | |
23 // The |keyboard_rect| parameter contains the bounds of the keyboard in DIPs. | |
24 virtual void OnKeyboardVisible(const gfx::Rect& keyboard_rect_in_dips) {} | |
25 virtual void OnKeyboardHidden(const gfx::Rect& keyboard_rect_in_dips) {} | |
26 }; | |
27 | |
28 class OnScreenKeyboardDetector; | |
29 class OnScreenKeyboardObserver; | |
30 | |
31 // This class provides functionality to display the on screen keyboard on | |
32 // Windows 8+. It optionally notifies observers that the OSK is displayed, | |
33 // hidden, etc. | |
34 class UI_BASE_EXPORT OnScreenKeyboardDisplayManager { | |
35 public: | |
36 static OnScreenKeyboardDisplayManager* GetInstance(); | |
37 | |
38 ~OnScreenKeyboardDisplayManager(); | |
39 | |
40 // Functions to display and dismiss the keyboard. | |
41 // The |observer| parameters allow the caller to optionally set up | |
42 // notification observers for detecting when the keyboard is displayed | |
43 // hidden etc. | |
44 bool DisplayVirtualKeyboard(OnScreenKeyboardObserver* observer); | |
45 bool DismissVirtualKeyboard(); | |
46 | |
47 private: | |
48 OnScreenKeyboardDisplayManager(); | |
49 | |
50 friend struct base::DefaultSingletonTraits<OnScreenKeyboardDisplayManager>; | |
51 | |
52 std::unique_ptr<OnScreenKeyboardDetector> keyboard_detector_; | |
53 | |
54 // The location of TabTip.exe. | |
55 base::string16 osk_path_; | |
56 | |
57 DISALLOW_COPY_AND_ASSIGN(OnScreenKeyboardDisplayManager); | |
58 }; | |
59 | |
60 // Displays the on screen keyboard on Windows 8 and above. Returns true on | |
61 // success. | |
62 UI_BASE_EXPORT bool DisplayVirtualKeyboard(); | |
sky
2016/05/19 22:25:08
Can the single place that calls this be changed to
ananta
2016/05/19 23:15:40
Done.
| |
63 | |
64 // Dismisses the on screen keyboard if it is being displayed on Windows 8 and. | |
65 // above. Returns true on success. | |
66 UI_BASE_EXPORT bool DismissVirtualKeyboard(); | |
67 | |
68 } // namespace ui | |
69 | |
70 #endif // UI_BASE_WIN_OSK_DISPLAY_MANAGER_H_ | |
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