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1 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2006-2008 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 #include "base/base_drag_source.h" | 5 #include "base/base_drag_source.h" |
6 | 6 |
7 /////////////////////////////////////////////////////////////////////////////// | 7 /////////////////////////////////////////////////////////////////////////////// |
8 // BaseDragSource, public: | 8 // BaseDragSource, public: |
9 | 9 |
10 BaseDragSource::BaseDragSource() : ref_count_(0) { | 10 BaseDragSource::BaseDragSource() : ref_count_(0), cancel_drag_(false) { |
11 } | 11 } |
12 | 12 |
13 /////////////////////////////////////////////////////////////////////////////// | 13 /////////////////////////////////////////////////////////////////////////////// |
14 // BaseDragSource, IDropSource implementation: | 14 // BaseDragSource, IDropSource implementation: |
15 | 15 |
16 HRESULT BaseDragSource::QueryContinueDrag(BOOL escape_pressed, | 16 HRESULT BaseDragSource::QueryContinueDrag(BOOL escape_pressed, |
17 DWORD key_state) { | 17 DWORD key_state) { |
| 18 if (cancel_drag_) |
| 19 return DRAGDROP_S_CANCEL; |
| 20 |
18 if (escape_pressed) { | 21 if (escape_pressed) { |
19 OnDragSourceCancel(); | 22 OnDragSourceCancel(); |
20 return DRAGDROP_S_CANCEL; | 23 return DRAGDROP_S_CANCEL; |
21 } | 24 } |
22 | 25 |
23 if (!(key_state & MK_LBUTTON)) { | 26 if (!(key_state & MK_LBUTTON)) { |
24 OnDragSourceDrop(); | 27 OnDragSourceDrop(); |
25 return DRAGDROP_S_DROP; | 28 return DRAGDROP_S_DROP; |
26 } | 29 } |
27 | 30 |
(...skipping 23 matching lines...) Expand all Loading... |
51 return ++ref_count_; | 54 return ++ref_count_; |
52 } | 55 } |
53 | 56 |
54 ULONG BaseDragSource::Release() { | 57 ULONG BaseDragSource::Release() { |
55 if (--ref_count_ == 0) { | 58 if (--ref_count_ == 0) { |
56 delete this; | 59 delete this; |
57 return 0U; | 60 return 0U; |
58 } | 61 } |
59 return ref_count_; | 62 return ref_count_; |
60 } | 63 } |
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