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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef UI_VIEWS_WIN_HWND_MESSAGE_HANDLER_DELEGATE_H_ | 5 #ifndef UI_VIEWS_WIN_HWND_MESSAGE_HANDLER_DELEGATE_H_ |
6 #define UI_VIEWS_WIN_HWND_MESSAGE_HANDLER_DELEGATE_H_ | 6 #define UI_VIEWS_WIN_HWND_MESSAGE_HANDLER_DELEGATE_H_ |
7 | 7 |
8 #include "ui/views/views_export.h" | 8 #include "ui/views/views_export.h" |
9 | 9 |
10 namespace gfx { | 10 namespace gfx { |
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26 enum class FrameMode { | 26 enum class FrameMode { |
27 SYSTEM_DRAWN, // "glass" frame | 27 SYSTEM_DRAWN, // "glass" frame |
28 SYSTEM_DRAWN_NO_CONTROLS, // "glass" frame but with custom window controls | 28 SYSTEM_DRAWN_NO_CONTROLS, // "glass" frame but with custom window controls |
29 CUSTOM_DRAWN // "opaque" frame | 29 CUSTOM_DRAWN // "opaque" frame |
30 }; | 30 }; |
31 | 31 |
32 // Implemented by the object that uses the HWNDMessageHandler to handle | 32 // Implemented by the object that uses the HWNDMessageHandler to handle |
33 // notifications from the underlying HWND and service requests for data. | 33 // notifications from the underlying HWND and service requests for data. |
34 class VIEWS_EXPORT HWNDMessageHandlerDelegate { | 34 class VIEWS_EXPORT HWNDMessageHandlerDelegate { |
35 public: | 35 public: |
| 36 // For tracking the caret for accessibility. |
| 37 virtual void AddInputMethodObserver() const = 0; |
| 38 virtual void RemoveInputMethodObserver() const = 0; |
| 39 |
36 // True if the widget associated with this window has a non-client view. | 40 // True if the widget associated with this window has a non-client view. |
37 virtual bool HasNonClientView() const = 0; | 41 virtual bool HasNonClientView() const = 0; |
38 | 42 |
39 // Returns who we want to be drawing the frame. Either the system (Windows) | 43 // Returns who we want to be drawing the frame. Either the system (Windows) |
40 // will handle it or Chrome will custom draw it. | 44 // will handle it or Chrome will custom draw it. |
41 virtual FrameMode GetFrameMode() const = 0; | 45 virtual FrameMode GetFrameMode() const = 0; |
42 | 46 |
43 // True if a frame should be drawn. This will return true for some windows | 47 // True if a frame should be drawn. This will return true for some windows |
44 // that don't have a visible frame. Those usually have the WS_POPUP style, for | 48 // that don't have a visible frame. Those usually have the WS_POPUP style, for |
45 // which Windows will remove the frame automatically if the frame mode is | 49 // which Windows will remove the frame automatically if the frame mode is |
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245 // Called when the window scale factor has changed. | 249 // Called when the window scale factor has changed. |
246 virtual void HandleWindowScaleFactorChanged(float window_scale_factor) = 0; | 250 virtual void HandleWindowScaleFactorChanged(float window_scale_factor) = 0; |
247 | 251 |
248 protected: | 252 protected: |
249 virtual ~HWNDMessageHandlerDelegate() {} | 253 virtual ~HWNDMessageHandlerDelegate() {} |
250 }; | 254 }; |
251 | 255 |
252 } // namespace views | 256 } // namespace views |
253 | 257 |
254 #endif // UI_VIEWS_WIN_HWND_MESSAGE_HANDLER_DELEGATE_H_ | 258 #endif // UI_VIEWS_WIN_HWND_MESSAGE_HANDLER_DELEGATE_H_ |
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