/**
 * @file XTPDropSource.cpp
 *
 * @copyright
 * (c) 1998-2025 Codejock Software, All Rights Reserved.
 *
 * This source file is the property of Codejock Software and must not be
 * redistributed by any means without the explicit written permission of
 * Codejock Software.
 *
 * The use of this source code is governed by the terms and conditions specified
 * in the Toolkit Pro license agreement. Codejock Software grants you, as a
 * single software developer, the limited right to use this software on one
 * computer only.
 *
 * Contact Information:
 * support@codejock.com
 * http://www.codejock.com
 *
 */

#include "stdafx.h"

#include "Controls/Shell/XTPDropSource.h"

#include "Common/Base/Diagnostic/XTPDisableNoisyWarnings.h"

#ifdef _DEBUG
#	define new DEBUG_NEW
#	undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CXTPDropSource

CXTPDropSource::CXTPDropSource()
{
	m_uiRefCount = 1;
}

CXTPDropSource::~CXTPDropSource()
{
}

/////////////////////////////////////////////////////////////////////////////
// IUnknown Methods

STDMETHODIMP CXTPDropSource::QueryInterface(REFIID riid, LPVOID* ppReturn)
{
	*ppReturn = NULL;

	// IUnknown
	if (IsEqualIID(riid, IID_IUnknown))
	{
		*ppReturn = this;
	}
	// IDropTarget
	else if (IsEqualIID(riid, IID_IDropSource))
	{
		*ppReturn = (IDropSource*)this;
	}
	if (*ppReturn)
	{
		(*(LPUNKNOWN*)ppReturn)->AddRef();
		return S_OK;
	}
	return E_NOINTERFACE;
}

STDMETHODIMP_(ULONG) CXTPDropSource::AddRef()
{
	return ++m_uiRefCount;
}

STDMETHODIMP_(ULONG) CXTPDropSource::Release()
{
	if (--m_uiRefCount == 0)
	{
		delete this;
		return 0;
	}
	return m_uiRefCount;
}

/////////////////////////////////////////////////////////////////////////////
// IDropSource Methods

STDMETHODIMP CXTPDropSource::QueryContinueDrag(BOOL bEsc, DWORD dwKeyState)
{
	if (bEsc)
	{
		return DRAGDROP_S_CANCEL;
	}

	if ((dwKeyState & MK_LBUTTON) == 0x0000)
	{
		return DRAGDROP_S_DROP;
	}
	return S_OK;
}

STDMETHODIMP CXTPDropSource::GiveFeedback(DWORD)
{
	return DRAGDROP_S_USEDEFAULTCURSORS;
}