desktop_drag_drop_client_win.cc revision 5d1f7b1de12d16ceb2c938c56701a3e8bfa558f7 
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
3// found in the LICENSE file.
4
5#include "ui/views/widget/desktop_aura/desktop_drag_drop_client_win.h"
6
7#include "ui/base/dragdrop/drag_drop_types.h"
8#include "ui/base/dragdrop/drag_source_win.h"
9#include "ui/base/dragdrop/drop_target_event.h"
10#include "ui/base/dragdrop/os_exchange_data_provider_win.h"
11#include "ui/views/widget/desktop_aura/desktop_drop_target_win.h"
12#include "ui/views/widget/desktop_aura/desktop_window_tree_host_win.h"
13#include "ui/views/widget/drop_target_win.h"
14
15namespace views {
16
17DesktopDragDropClientWin::DesktopDragDropClientWin(
18    aura::Window* root_window,
19    HWND window)
20    : drag_drop_in_progress_(false),
21      drag_operation_(0) {
22  drop_target_ = new DesktopDropTargetWin(root_window, window);
23}
24
25DesktopDragDropClientWin::~DesktopDragDropClientWin() {
26}
27
28int DesktopDragDropClientWin::StartDragAndDrop(
29    const ui::OSExchangeData& data,
30    aura::Window* root_window,
31    aura::Window* source_window,
32    const gfx::Point& root_location,
33    int operation,
34    ui::DragDropTypes::DragEventSource source) {
35  drag_drop_in_progress_ = true;
36  drag_operation_ = operation;
37
38  drag_source_ = new ui::DragSourceWin;
39  DWORD effect;
40  HRESULT result = DoDragDrop(
41      ui::OSExchangeDataProviderWin::GetIDataObject(data),
42      drag_source_,
43      ui::DragDropTypes::DragOperationToDropEffect(operation),
44      &effect);
45
46  drag_drop_in_progress_ = false;
47
48  if (result != DRAGDROP_S_DROP)
49    effect = DROPEFFECT_NONE;
50
51  return ui::DragDropTypes::DropEffectToDragOperation(effect);
52}
53
54void DesktopDragDropClientWin::DragUpdate(aura::Window* target,
55                                          const ui::LocatedEvent& event) {
56}
57
58void DesktopDragDropClientWin::Drop(aura::Window* target,
59                                    const ui::LocatedEvent& event) {
60}
61
62void DesktopDragDropClientWin::DragCancel() {
63  drag_source_->CancelDrag();
64  drag_operation_ = 0;
65}
66
67bool DesktopDragDropClientWin::IsDragDropInProgress() {
68  return drag_drop_in_progress_;
69}
70
71void DesktopDragDropClientWin::OnNativeWidgetDestroying(HWND window) {
72  if (drop_target_.get()) {
73    RevokeDragDrop(window);
74    drop_target_ = NULL;
75  }
76}
77
78}  // namespace views
79