OLD | NEW |
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 CONTENT_BROWSER_WEB_CONTENTS_WEB_DRAG_SOURCE_WIN_H_ | 5 #ifndef CONTENT_BROWSER_WEB_CONTENTS_WEB_DRAG_SOURCE_WIN_H_ |
6 #define CONTENT_BROWSER_WEB_CONTENTS_WEB_DRAG_SOURCE_WIN_H_ | 6 #define CONTENT_BROWSER_WEB_CONTENTS_WEB_DRAG_SOURCE_WIN_H_ |
7 | 7 |
8 #include "base/basictypes.h" | 8 #include "base/basictypes.h" |
9 #include "content/public/browser/notification_observer.h" | 9 #include "content/public/browser/notification_observer.h" |
10 #include "content/public/browser/notification_registrar.h" | 10 #include "content/public/browser/notification_registrar.h" |
11 #include "ui/base/dragdrop/drag_source_win.h" | 11 #include "ui/base/dragdrop/drag_source_win.h" |
12 #include "ui/gfx/native_widget_types.h" | 12 #include "ui/gfx/native_widget_types.h" |
13 #include "ui/gfx/point.h" | 13 #include "ui/gfx/point.h" |
14 | 14 |
| 15 namespace ui { |
| 16 class OSExchangeData; |
| 17 } // namespace ui |
| 18 |
15 namespace content { | 19 namespace content { |
16 class RenderViewHost; | 20 class RenderViewHost; |
17 class WebContents; | 21 class WebContents; |
18 | 22 |
19 // An IDropSource implementation for a WebContentsImpl. Handles notifications | 23 // An IDropSource implementation for a WebContentsImpl. Handles notifications |
20 // sent by an active drag-drop operation as the user mouses over other drop | 24 // sent by an active drag-drop operation as the user mouses over other drop |
21 // targets on their system. This object tells Windows whether or not the drag | 25 // targets on their system. This object tells Windows whether or not the drag |
22 // should continue, and supplies the appropriate cursors. | 26 // should continue, and supplies the appropriate cursors. |
23 class WebDragSource : public ui::DragSourceWin, | 27 class WebDragSource : public ui::DragSourceWin, |
24 public NotificationObserver { | 28 public NotificationObserver { |
25 public: | 29 public: |
26 // Create a new DragSource for a given HWND and WebContents. | 30 // Create a new DragSource for a given HWND and WebContents. |
27 WebDragSource(gfx::NativeWindow source_wnd, WebContents* web_contents); | 31 WebDragSource(gfx::NativeWindow source_wnd, WebContents* web_contents); |
28 virtual ~WebDragSource(); | 32 virtual ~WebDragSource(); |
29 | 33 |
30 // NotificationObserver implementation. | 34 // NotificationObserver implementation. |
31 virtual void Observe(int type, | 35 virtual void Observe(int type, |
32 const NotificationSource& source, | 36 const NotificationSource& source, |
33 const NotificationDetails& details); | 37 const NotificationDetails& details); |
34 | 38 |
35 void set_effect(DWORD effect) { effect_ = effect; } | 39 void set_effect(DWORD effect) { effect_ = effect; } |
| 40 // Used to set the active data object for the current drag operation. The |
| 41 // caller must ensure that |data| is not destroyed before the nested drag loop |
| 42 // terminates. |
| 43 void set_data(ui::OSExchangeData* data) { data_ = data; } |
36 | 44 |
37 protected: | 45 protected: |
38 // ui::DragSourceWin | 46 // ui::DragSourceWin |
39 virtual void OnDragSourceCancel(); | 47 virtual void OnDragSourceCancel(); |
40 virtual void OnDragSourceDrop(); | 48 virtual void OnDragSourceDrop(); |
41 virtual void OnDragSourceMove(); | 49 virtual void OnDragSourceMove(); |
42 | 50 |
43 private: | 51 private: |
44 // Cannot construct thusly. | 52 // Cannot construct thusly. |
45 WebDragSource(); | 53 WebDragSource(); |
46 | 54 |
47 // OnDragSourceDrop schedules its main work to be done after IDropTarget::Drop | 55 // OnDragSourceDrop schedules its main work to be done after IDropTarget::Drop |
48 // by posting a task to this function. | 56 // by posting a task to this function. |
49 void DelayedOnDragSourceDrop(); | 57 void DelayedOnDragSourceDrop(); |
50 | 58 |
51 // Keep a reference to the window so we can translate the cursor position. | 59 // Keep a reference to the window so we can translate the cursor position. |
52 gfx::NativeWindow source_wnd_; | 60 gfx::NativeWindow source_wnd_; |
53 | 61 |
54 // We use this as a channel to the renderer to tell it about various drag | 62 // We use this as a channel to the renderer to tell it about various drag |
55 // drop events that it needs to know about (such as when a drag operation it | 63 // drop events that it needs to know about (such as when a drag operation it |
56 // initiated terminates). | 64 // initiated terminates). |
57 RenderViewHost* render_view_host_; | 65 RenderViewHost* render_view_host_; |
58 | 66 |
59 NotificationRegistrar registrar_; | 67 NotificationRegistrar registrar_; |
60 | 68 |
61 DWORD effect_; | 69 DWORD effect_; |
62 | 70 |
| 71 ui::OSExchangeData* data_; |
| 72 |
63 DISALLOW_COPY_AND_ASSIGN(WebDragSource); | 73 DISALLOW_COPY_AND_ASSIGN(WebDragSource); |
64 }; | 74 }; |
65 | 75 |
66 } // namespace content | 76 } // namespace content |
67 | 77 |
68 #endif // CONTENT_BROWSER_WEB_CONTENTS_WEB_DRAG_SOURCE_WIN_H_ | 78 #endif // CONTENT_BROWSER_WEB_CONTENTS_WEB_DRAG_SOURCE_WIN_H_ |
OLD | NEW |