win32/workbench/XTDo.cxx

/**************************************************************
 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 *
 *************************************************************/


// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_dtrans.hxx"

//------------------------------------------------------------------------
// includes
//------------------------------------------------------------------------
#include <osl/diagnose.h>

#include "..\DTransHelper.hxx"

#ifndef _TWRAPPERDATAOBJECT_HXX_
#include "XTDo.hxx"
#endif

#if defined _MSC_VER
#pragma warning(push,1)
#endif
#include <windows.h>
#include <ole2.h>
#if defined _MSC_VER
#pragma warning(pop)
#endif
#include <memory>
#include <tchar.h>

//------------------------------------------------------------------------
// namespace directives
//------------------------------------------------------------------------

using namespace ::std;

//============================================================================
// OTWrapperDataObject
//============================================================================

//------------------------------------------------------------------------
// ctor
//------------------------------------------------------------------------
/*
	in the constructor we enumerate all formats offered by the transferable
	and convert the formats into formatetc structures
	if the transferable supports text in different charsets we use either
	the charset equal to the charset of the current thread or an arbitrary
	charset supported by the transferable and the system
	if the transferable supports only unicodetext we offer in addition to
	this text in the charset of the current thread
	in order to allow the consumer of the clipboard to query for the charset
	of the text in the clipboard we offer a CF_LOCALE
*/
CXTDataObject::CXTDataObject( ) :
	m_nRefCnt( 0 )
{

}

//------------------------------------------------------------------------
// IUnknown->QueryInterface
//------------------------------------------------------------------------

STDMETHODIMP CXTDataObject::QueryInterface( REFIID iid, LPVOID* ppvObject )
{
	OSL_ASSERT( NULL != ppvObject );

	if ( NULL == ppvObject )
		return E_INVALIDARG;

	HRESULT hr = E_NOINTERFACE;

	*ppvObject = NULL;

	if ( ( __uuidof( IUnknown ) == iid ) || ( __uuidof( IDataObject ) == iid ) )
	{
		*ppvObject = static_cast< IUnknown* >( this );
		( (LPUNKNOWN)*ppvObject )->AddRef( );
		hr = S_OK;
	}

	return hr;
}

//------------------------------------------------------------------------
// IUnknown->AddRef
//------------------------------------------------------------------------

STDMETHODIMP_(ULONG) CXTDataObject::AddRef( )
{
	return static_cast< ULONG >( InterlockedIncrement( &m_nRefCnt ) );
}

//------------------------------------------------------------------------
// IUnknown->Release
//------------------------------------------------------------------------

STDMETHODIMP_(ULONG) CXTDataObject::Release( )
{
	// we need a helper variable because it's
	// not allowed to access a member variable
	// after an object is destroyed
	ULONG nRefCnt = static_cast< ULONG >( InterlockedDecrement( &m_nRefCnt ) );

	if ( 0 == nRefCnt )
	{
		delete this;
	}

	return nRefCnt;
}

/*------------------------------------------------------------------------

 IDataObject->GetData
 we deliver data only into global memory

 algo:
 1. convert the given formatect struct into a valid dataflavor
 2. if the transferable directly supports the requested format
 2.1. if text data requested add a trailing '\0' in order to prevent
		problems (windows needs '\0' terminated strings
 2.2. we expect unicode data as Sequence< sal_Unicode > and all other
	    text and raw data as Sequence< sal_Int8 >

------------------------------------------------------------------------*/

STDMETHODIMP CXTDataObject::GetData( LPFORMATETC pFormatetc, LPSTGMEDIUM pmedium )
{
	if ( ( NULL == pFormatetc ) || ( NULL == pmedium ) )
		return E_INVALIDARG;

	HRESULT hr = E_FAIL;
	char    pBuff[] = "Test OleClipboard";

	if ( CF_TEXT == pFormatetc->cfFormat )
	{
		CHGlobalHelper hGlobHlp( TRUE );

		hGlobHlp.Write( pBuff, sizeof( pBuff ), NULL );

		pmedium->tymed          = TYMED_HGLOBAL;
		pmedium->hGlobal        = hGlobHlp.GetHGlobal( );
		pmedium->pUnkForRelease = NULL;

		hr = S_OK;
	}

	return hr;
}

//------------------------------------------------------------------------
// IDataObject->EnumFormatEtc
//------------------------------------------------------------------------

STDMETHODIMP CXTDataObject::EnumFormatEtc( DWORD dwDirection, IEnumFORMATETC** ppenumFormatetc )
{
	if ( ( NULL == ppenumFormatetc ) || ( DATADIR_SET == dwDirection ) )
		return E_INVALIDARG;

	*ppenumFormatetc = NULL;

	HRESULT hr = E_FAIL;

	if ( DATADIR_GET == dwDirection )
	{
		*ppenumFormatetc = new CEnumFormatEtc( this );
		static_cast< LPUNKNOWN >( *ppenumFormatetc )->AddRef( );
		hr = S_OK;
	}

	return hr;
}

//------------------------------------------------------------------------
// IDataObject->QueryGetData
//------------------------------------------------------------------------

STDMETHODIMP CXTDataObject::QueryGetData( LPFORMATETC pFormatetc )
{
	return E_NOTIMPL;
}

//------------------------------------------------------------------------
// IDataObject->GetDataHere
//------------------------------------------------------------------------

STDMETHODIMP CXTDataObject::GetDataHere( LPFORMATETC, LPSTGMEDIUM )
{
	return E_NOTIMPL;
}

//------------------------------------------------------------------------
// IDataObject->GetCanonicalFormatEtc
//------------------------------------------------------------------------

STDMETHODIMP CXTDataObject::GetCanonicalFormatEtc( LPFORMATETC, LPFORMATETC )
{
	return E_NOTIMPL;
}

//------------------------------------------------------------------------
// IDataObject->SetData
//------------------------------------------------------------------------

STDMETHODIMP CXTDataObject::SetData( LPFORMATETC, LPSTGMEDIUM, BOOL )
{
	return E_NOTIMPL;
}

//------------------------------------------------------------------------
// IDataObject->DAdvise
//------------------------------------------------------------------------

STDMETHODIMP CXTDataObject::DAdvise( LPFORMATETC, DWORD, LPADVISESINK, DWORD * )
{
	return E_NOTIMPL;
}

//------------------------------------------------------------------------
// IDataObject->DUnadvise
//------------------------------------------------------------------------

STDMETHODIMP CXTDataObject::DUnadvise( DWORD )
{
	return E_NOTIMPL;
}

//------------------------------------------------------------------------
// IDataObject->EnumDAdvise
//------------------------------------------------------------------------

STDMETHODIMP CXTDataObject::EnumDAdvise( LPENUMSTATDATA * )
{
	return E_NOTIMPL;
}

//------------------------------------------------------------------------
// for our convenience
//------------------------------------------------------------------------

CXTDataObject::operator IDataObject*( )
{
	return static_cast< IDataObject* >( this );
}


//============================================================================
// CEnumFormatEtc
//============================================================================

//----------------------------------------------------------------------------
// ctor
//----------------------------------------------------------------------------

CEnumFormatEtc::CEnumFormatEtc( LPUNKNOWN pUnkDataObj ) :
	m_nRefCnt( 0 ),
	m_pUnkDataObj( pUnkDataObj ),
	m_nCurrPos( 0 )
{
}

//----------------------------------------------------------------------------
// IUnknown->QueryInterface
//----------------------------------------------------------------------------

STDMETHODIMP CEnumFormatEtc::QueryInterface( REFIID iid, LPVOID* ppvObject )
{
	if ( NULL == ppvObject )
		return E_INVALIDARG;

	HRESULT hr = E_NOINTERFACE;

	*ppvObject = NULL;

	if ( ( __uuidof( IUnknown ) == iid ) || ( __uuidof( IEnumFORMATETC ) == iid ) )
	{
		*ppvObject = static_cast< IUnknown* >( this );
		static_cast< LPUNKNOWN >( *ppvObject )->AddRef( );
		hr = S_OK;
	}

	return hr;
}

//----------------------------------------------------------------------------
// IUnknown->AddRef
//----------------------------------------------------------------------------

STDMETHODIMP_(ULONG) CEnumFormatEtc::AddRef( )
{
	// keep the dataobject alive
	m_pUnkDataObj->AddRef( );
	return InterlockedIncrement( &m_nRefCnt );
}

//----------------------------------------------------------------------------
// IUnknown->Release
//----------------------------------------------------------------------------

STDMETHODIMP_(ULONG) CEnumFormatEtc::Release( )
{
	// release the outer dataobject
	m_pUnkDataObj->Release( );

	// we need a helper variable because it's
	// not allowed to access a member variable
	// after an object is destroyed
	ULONG nRefCnt = InterlockedDecrement( &m_nRefCnt );
	if ( 0 == nRefCnt )
		delete this;

	return nRefCnt;
}

//----------------------------------------------------------------------------
// IEnumFORMATETC->Next
//----------------------------------------------------------------------------

STDMETHODIMP CEnumFormatEtc::Next( ULONG celt, LPFORMATETC rgelt, ULONG* pceltFetched )
{
	if ( ( 0 != celt ) && ( NULL == rgelt ) )
		return E_INVALIDARG;

	ULONG   ulFetched = 0;
	ULONG   ulToFetch = celt;
	HRESULT hr        = S_FALSE;

	while( m_nCurrPos < 1 )
	{
		rgelt->cfFormat = CF_TEXT;
		rgelt->ptd      = NULL;
		rgelt->dwAspect = DVASPECT_CONTENT;
		rgelt->lindex   = -1;
		rgelt->tymed    = TYMED_HGLOBAL;

		++m_nCurrPos;
		++rgelt;
		--ulToFetch;
		++ulFetched;
	}

	if ( ulFetched == celt )
		hr = S_OK;

	if ( NULL != pceltFetched )
	{
		*pceltFetched = ulFetched;
	}

	return hr;
}

//----------------------------------------------------------------------------
// IEnumFORMATETC->Skip
//----------------------------------------------------------------------------

STDMETHODIMP CEnumFormatEtc::Skip( ULONG celt )
{
	HRESULT hr = S_FALSE;

	/*
	if ( ( m_nCurrPos + celt ) < m_nClipFormats )
	{
		m_nCurrPos += celt;
		hr = S_OK;
	}
	*/

	return hr;
}

//----------------------------------------------------------------------------
// IEnumFORMATETC->Reset
//----------------------------------------------------------------------------

STDMETHODIMP CEnumFormatEtc::Reset( )
{
	m_nCurrPos = 0;
	return S_OK;
}

//----------------------------------------------------------------------------
// IEnumFORMATETC->Clone
//----------------------------------------------------------------------------

STDMETHODIMP CEnumFormatEtc::Clone( IEnumFORMATETC** ppenum )
{
	OSL_ASSERT( NULL != ppenum );

	if ( NULL == ppenum )
		return E_INVALIDARG;

	HRESULT hr = E_FAIL;

	*ppenum = NULL;

	CEnumFormatEtc* pCEnumFEtc = new CEnumFormatEtc( m_pUnkDataObj );
	if ( NULL != pCEnumFEtc )
	{
		pCEnumFEtc->m_nCurrPos = m_nCurrPos;
		*ppenum = static_cast< IEnumFORMATETC* >( pCEnumFEtc );
		static_cast< LPUNKNOWN >( *ppenum )->AddRef( );
		hr = NOERROR;
	}

	return hr;
}