// (C) Copyright Gert-Jan de Vos and Jan Wilmans 2013.

// Distributed under the Boost Software License, Version 1.0.

// (See accompanying file LICENSE_1_0.txt or copy at

// http://www.boost.org/LICENSE_1_0.txt)

#pragma once

#include <atlbase.h>

#include <atlcom.h>

#include <boost/signals2/signal.hpp>

namespace fusion {

namespace debugviewpp {

class ATL_NO_VTABLE DropTargetSupport

: public CComObjectRootEx<CComSingleThreadModel>

, public IDropTarget

{

public:

BEGIN_COM_MAP(DropTargetSupport)

COM_INTERFACE_ENTRY(IDropTarget)

END_COM_MAP()

DropTargetSupport();

virtual ~DropTargetSupport() = default;

void Register(HWND hwnd);

void Unregister();

STDMETHOD(DragEnter)(IDataObject* pDataObject, DWORD grfKeyState, POINTL pt, DWORD* pdwEffect) override;

STDMETHOD(DragOver)(DWORD grfKeyState, POINTL pt, DWORD* pdwEffect) override;

STDMETHOD(DragLeave)() override;

STDMETHOD(Drop)(IDataObject* pDataObject, DWORD grfKeyState, POINTL pt, DWORD* pdwEffect) override;

using DroppedSignal = boost::signals2::signal<void(const std::wstring&)>;

boost::signals2::connection SubscribeToDropped(DroppedSignal::slot_type slot);

private:

HWND m_hwnd = nullptr;

DroppedSignal m_onDropped;

};

} // namespace debugviewpp

} // namespace fusion