blob: 3249ec51e428ce78596f81d28c4f0707c5ba84a7 [file] [log] [blame]
// Copyright (c) 2011 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 UI_VIEWS_WIDGET_DROP_TARGET_WIN_H_
#define UI_VIEWS_WIDGET_DROP_TARGET_WIN_H_
#pragma once
#include "ui/base/dragdrop/drop_target.h"
#include "ui/views/widget/drop_helper.h"
namespace views {
class View;
namespace internal {
class RootView;
}
// DropTargetWin takes care of managing drag and drop for NativeWidgetWin. 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 ui::DropTarget {
public:
explicit DropTargetWin(internal::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 // UI_VIEWS_WIDGET_DROP_TARGET_WIN_H_