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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | 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 | 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_BASE_DRAGDROP_DRAG_SOURCE_WIN_H_ | 5 #ifndef UI_BASE_DRAGDROP_DRAG_SOURCE_WIN_H_ |
6 #define UI_BASE_DRAGDROP_DRAG_SOURCE_WIN_H_ | 6 #define UI_BASE_DRAGDROP_DRAG_SOURCE_WIN_H_ |
7 | 7 |
8 #include <objidl.h> | 8 #include <objidl.h> |
9 | 9 |
10 #include "base/basictypes.h" | 10 #include "base/basictypes.h" |
11 #include "base/memory/ref_counted.h" | 11 #include "base/memory/ref_counted.h" |
12 #include "ui/base/dragdrop/drag_drop_types.h" | |
12 #include "ui/base/ui_export.h" | 13 #include "ui/base/ui_export.h" |
13 | 14 |
14 namespace ui { | 15 namespace ui { |
15 | 16 |
16 // A base IDropSource implementation. Handles notifications sent by an active | 17 // A base IDropSource implementation. Handles notifications sent by an active |
17 // drag-drop operation as the user mouses over other drop targets on their | 18 // drag-drop operation as the user mouses over other drop targets on their |
18 // system. This object tells Windows whether or not the drag should continue, | 19 // system. This object tells Windows whether or not the drag should continue, |
19 // and supplies the appropriate cursors. | 20 // and supplies the appropriate cursors. |
20 class UI_EXPORT DragSourceWin | 21 class UI_EXPORT DragSourceWin |
21 : public IDropSource, | 22 : public IDropSource, |
22 public base::RefCountedThreadSafe<DragSourceWin> { | 23 public base::RefCountedThreadSafe<DragSourceWin> { |
23 public: | 24 public: |
24 DragSourceWin(); | 25 DragSourceWin(); |
26 DragSourceWin(DragDropTypes::DragEventSource event_source); | |
sky
2013/06/07 21:29:50
explicit, and nuke the other constructors.
Hongbo Min
2013/06/08 03:08:49
Done.
| |
25 virtual ~DragSourceWin() {} | 27 virtual ~DragSourceWin() {} |
26 | 28 |
27 // Stop the drag operation at the next chance we get. This doesn't | 29 // Stop the drag operation at the next chance we get. This doesn't |
28 // synchronously stop the drag (since Windows is controlling that), | 30 // synchronously stop the drag (since Windows is controlling that), |
29 // but lets us tell Windows to cancel the drag the next chance we get. | 31 // but lets us tell Windows to cancel the drag the next chance we get. |
30 void CancelDrag() { | 32 void CancelDrag() { |
31 cancel_drag_ = true; | 33 cancel_drag_ = true; |
32 } | 34 } |
33 | 35 |
34 // IDropSource implementation: | 36 // IDropSource implementation: |
35 HRESULT __stdcall QueryContinueDrag(BOOL escape_pressed, DWORD key_state); | 37 HRESULT __stdcall QueryContinueDrag(BOOL escape_pressed, DWORD key_state); |
36 HRESULT __stdcall GiveFeedback(DWORD effect); | 38 HRESULT __stdcall GiveFeedback(DWORD effect); |
37 | 39 |
38 // IUnknown implementation: | 40 // IUnknown implementation: |
39 HRESULT __stdcall QueryInterface(const IID& iid, void** object); | 41 HRESULT __stdcall QueryInterface(const IID& iid, void** object); |
40 ULONG __stdcall AddRef(); | 42 ULONG __stdcall AddRef(); |
41 ULONG __stdcall Release(); | 43 ULONG __stdcall Release(); |
42 | 44 |
43 protected: | 45 protected: |
44 virtual void OnDragSourceCancel() {} | 46 virtual void OnDragSourceCancel() {} |
45 virtual void OnDragSourceDrop() {} | 47 virtual void OnDragSourceDrop() {} |
46 virtual void OnDragSourceMove() {} | 48 virtual void OnDragSourceMove() {} |
47 | 49 |
48 private: | 50 private: |
49 // Set to true if we want to cancel the drag operation. | 51 // Set to true if we want to cancel the drag operation. |
50 bool cancel_drag_; | 52 bool cancel_drag_; |
51 | 53 |
54 // Indicate the drag initiator, mouse or touch. | |
55 const DragDropTypes::DragEventSource event_source_; | |
56 | |
52 DISALLOW_COPY_AND_ASSIGN(DragSourceWin); | 57 DISALLOW_COPY_AND_ASSIGN(DragSourceWin); |
53 }; | 58 }; |
54 | 59 |
55 } // namespace ui | 60 } // namespace ui |
56 | 61 |
57 #endif // UI_BASE_DRAGDROP_DRAG_SOURCE_WIN_H_ | 62 #endif // UI_BASE_DRAGDROP_DRAG_SOURCE_WIN_H_ |
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