blob: 75949a9d23e382316f1f89f4f4e9287089fe5efb (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
|
// Copyright (c) 2009 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef VIEWS_WIDGET_DROP_TARGET_WIN_H_
#define VIEWS_WIDGET_DROP_TARGET_WIN_H_
#pragma once
#include "base/base_drop_target.h"
#include "views/widget/drop_helper.h"
namespace views {
class RootView;
class View;
// DropTargetWin takes care of managing drag and drop for WidgetWin. It
// converts Windows OLE drop messages into Views drop messages.
//
// DropTargetWin uses DropHelper to manage the appropriate view to target
// drop messages at.
class DropTargetWin : public BaseDropTarget {
public:
explicit DropTargetWin(RootView* root_view);
virtual ~DropTargetWin();
// If a drag and drop is underway and view is the current drop target, the
// drop target is set to null.
// This is invoked when a View is removed from the RootView to make sure
// we don't target a view that was removed during dnd.
void ResetTargetViewIfEquals(View* view);
protected:
virtual DWORD OnDragOver(IDataObject* data_object,
DWORD key_state,
POINT cursor_position,
DWORD effect);
virtual void OnDragLeave(IDataObject* data_object);
virtual DWORD OnDrop(IDataObject* data_object,
DWORD key_state,
POINT cursor_position,
DWORD effect);
private:
views::DropHelper helper_;
DISALLOW_COPY_AND_ASSIGN(DropTargetWin);
};
} // namespace views
#endif // VIEWS_WIDGET_DROP_TARGET_WIN_H_
|
