// TortoiseSVN - a Windows shell extension for easy version control

// Copyright (C) 2003-2008, 2010, 2012, 2014, 2021 - TortoiseSVN

// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.

// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software Foundation,
// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
//
#pragma once
#include "DragDropImpl.h"

class CItem;
class CTreeItem;
class CRepositoryBrowser;

/**
 * \ingroup TortoiseProc
 * Base class for the drag'n'drop classes for the repository browser.
 */
class CBaseDropTarget : public CIDropTarget
{
public:
    CBaseDropTarget(CRepositoryBrowser *pRepoBrowser, HWND hTargetWnd);

    void HandleDropFormats(FORMATETC *pFmtEtc, STGMEDIUM &medium, DWORD *pdwEffect, POINTL pt, const CString &targetUrl, const CString &root) const;

protected:
    CRepositoryBrowser *m_pRepoBrowser;

    bool    m_bFiles;
    CString sNoDrop;
    CString sImportDrop;
    CString sCopyDrop;
    CString sMoveDrop;
};

/**
 * \ingroup TortoiseProc
 * Implements a drop target on the left tree control in the repository browser
 */
class CTreeDropTarget : public CBaseDropTarget
{
public:
    CTreeDropTarget(CRepositoryBrowser *pRepoBrowser);

    bool                      OnDrop(FORMATETC *pFmtEtc, STGMEDIUM &medium, DWORD *pdwEffect, POINTL pt) override;
    HRESULT STDMETHODCALLTYPE DragEnter(IDataObject __RPC_FAR *pDataObj, DWORD grfKeyState, POINTL pt, DWORD __RPC_FAR *pdwEffect) override;
    HRESULT STDMETHODCALLTYPE DragOver(DWORD grfKeyState, POINTL pt, DWORD __RPC_FAR *pdwEffect) override;
    HRESULT STDMETHODCALLTYPE DragLeave() override;

private:
    ULONGLONG m_ullHoverStartTicks;
    HTREEITEM hLastItem;
};

/**
 * \ingroup TortoiseProc
 * Implements a drop target on the right list control in the repository browser
 */
class CListDropTarget : public CBaseDropTarget
{
public:
    CListDropTarget(CRepositoryBrowser *pRepoBrowser);

    bool                      OnDrop(FORMATETC *pFmtEtc, STGMEDIUM &medium, DWORD *pdwEffect, POINTL pt) override;
    HRESULT STDMETHODCALLTYPE DragEnter(IDataObject __RPC_FAR *pDataObj, DWORD grfKeyState, POINTL pt, DWORD __RPC_FAR *pdwEffect) override;
    HRESULT STDMETHODCALLTYPE DragOver(DWORD grfKeyState, POINTL pt, DWORD __RPC_FAR *pdwEffect) override;
    HRESULT STDMETHODCALLTYPE DragLeave() override;
};