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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 class OnScreenKeyboardDetector; |
| 18 class OnScreenKeyboardObserver; |
| 19 |
| 20 // This class provides functionality to display the on screen keyboard on |
| 21 // Windows 8+. It optionally notifies observers that the OSK is displayed, |
| 22 // hidden, etc. |
| 23 class UI_BASE_EXPORT OnScreenKeyboardDisplayManager { |
| 24 public: |
| 25 static OnScreenKeyboardDisplayManager* GetInstance(); |
| 26 |
| 27 ~OnScreenKeyboardDisplayManager(); |
| 28 |
| 29 // Functions to display and dismiss the keyboard. |
| 30 // The optional |observer| parameter allows callers to be notified when the |
| 31 // keyboard is displayed, dismissed, etc. |
| 32 bool DisplayVirtualKeyboard(OnScreenKeyboardObserver* observer); |
| 33 // When the keyboard is dismissed, the registered observer if any is removed |
| 34 // after notifying it. |
| 35 bool DismissVirtualKeyboard(); |
| 36 |
| 37 // Removes a registered observer. |
| 38 void RemoveObserver(OnScreenKeyboardObserver* observer); |
| 39 |
| 40 private: |
| 41 OnScreenKeyboardDisplayManager(); |
| 42 |
| 43 friend struct base::DefaultSingletonTraits<OnScreenKeyboardDisplayManager>; |
| 44 |
| 45 std::unique_ptr<OnScreenKeyboardDetector> keyboard_detector_; |
| 46 |
| 47 // The location of TabTip.exe. |
| 48 base::string16 osk_path_; |
| 49 |
| 50 DISALLOW_COPY_AND_ASSIGN(OnScreenKeyboardDisplayManager); |
| 51 }; |
| 52 |
| 53 } // namespace ui |
| 54 |
| 55 #endif // UI_BASE_WIN_OSK_DISPLAY_MANAGER_H_ |
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