/**************************************************************
 * 
 * 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_sw.hxx"



#include "errhdl.hxx"

#include "txtcache.hxx"
#include "txtfrm.hxx"
#include "porlay.hxx"

/*************************************************************************
|*
|*	SwTxtLine::SwTxtLine(), ~SwTxtLine()
|*
|*	Ersterstellung		MA 16. Mar. 94
|*	Letzte Aenderung	MA 16. Mar. 94
|*
|*************************************************************************/

SwTxtLine::SwTxtLine( SwTxtFrm *pFrm, SwParaPortion *pNew ) :
	SwCacheObj( (void*)pFrm ),
	pLine( pNew )
{
}

SwTxtLine::~SwTxtLine()
{
	delete pLine;
}

/*************************************************************************
|*
|*	SwTxtLineAccess::NewObj()
|*
|*	Ersterstellung		MA 16. Mar. 94
|*	Letzte Aenderung	MA 16. Mar. 94
|*
|*************************************************************************/

SwCacheObj *SwTxtLineAccess::NewObj()
{
	return new SwTxtLine( (SwTxtFrm*)pOwner );
}

/*************************************************************************
|*
|*	SwTxtLineAccess::GetPara()
|*
|*	Ersterstellung		MA 16. Mar. 94
|*	Letzte Aenderung	MA 16. Mar. 94
|*
|*************************************************************************/

SwParaPortion *SwTxtLineAccess::GetPara()
{
	SwTxtLine *pRet;
	if ( pObj )
		pRet = (SwTxtLine*)pObj;
	else
	{
		pRet = (SwTxtLine*)Get();
		((SwTxtFrm*)pOwner)->SetCacheIdx( pRet->GetCachePos() );
	}
	if ( !pRet->GetPara() )
		pRet->SetPara( new SwParaPortion );
	return pRet->GetPara();
}


/*************************************************************************
|*
|*	SwTxtLineAccess::SwTxtLineAccess()
|*
|*	Ersterstellung		MA 16. Mar. 94
|*	Letzte Aenderung	MA 16. Mar. 94
|*
|*************************************************************************/

SwTxtLineAccess::SwTxtLineAccess( const SwTxtFrm *pOwn ) :
    SwCacheAccess( *SwTxtFrm::GetTxtCache(), pOwn, pOwn->GetCacheIdx() )
{
}

/*************************************************************************
|*
|*	SwTxtLineAccess::IsAvailable
|*
|*	Ersterstellung		MA 23. Mar. 94
|*	Letzte Aenderung	MA 23. Mar. 94
|*
|*************************************************************************/

sal_Bool SwTxtLineAccess::IsAvailable() const
{
	if ( pObj )
		return ((SwTxtLine*)pObj)->GetPara() != 0;
	return sal_False;
}

/*************************************************************************
|*
|*	SwTxtFrm::HasPara()
|*
|*	Ersterstellung		MA 16. Mar. 94
|*	Letzte Aenderung	MA 22. Aug. 94
|*
|*************************************************************************/

sal_Bool SwTxtFrm::_HasPara() const
{
	SwTxtLine *pTxtLine = (SwTxtLine*)SwTxtFrm::GetTxtCache()->
											Get( this, GetCacheIdx(), sal_False );
	if ( pTxtLine )
	{
		if ( pTxtLine->GetPara() )
			return sal_True;
	}
	else
		((SwTxtFrm*)this)->nCacheIdx = MSHRT_MAX;

	return sal_False;
}

/*************************************************************************
|*
|*	SwTxtFrm::GetPara()
|*
|*	Ersterstellung		MA 16. Mar. 94
|*	Letzte Aenderung	MA 22. Aug. 94
|*
|*************************************************************************/

SwParaPortion *SwTxtFrm::GetPara()
{
	if ( GetCacheIdx() != MSHRT_MAX )
	{	SwTxtLine *pLine = (SwTxtLine*)SwTxtFrm::GetTxtCache()->
										Get( this, GetCacheIdx(), sal_False );
		if ( pLine )
			return pLine->GetPara();
		else
			nCacheIdx = MSHRT_MAX;
	}
	return 0;
}


/*************************************************************************
|*
|*	SwTxtFrm::ClearPara()
|*
|*	Ersterstellung		MA 16. Mar. 94
|*	Letzte Aenderung	MA 22. Aug. 94
|*
|*************************************************************************/

void SwTxtFrm::ClearPara()
{
	ASSERT( !IsLocked(), "+SwTxtFrm::ClearPara: this is locked." );
	if ( !IsLocked() && GetCacheIdx() != MSHRT_MAX )
	{
		SwTxtLine *pTxtLine = (SwTxtLine*)SwTxtFrm::GetTxtCache()->
										Get( this, GetCacheIdx(), sal_False );
		if ( pTxtLine )
		{
			delete pTxtLine->GetPara();
			pTxtLine->SetPara( 0 );
		}
		else
			nCacheIdx = MSHRT_MAX;
	}
}

/*************************************************************************
|*
|*	SwTxtFrm::SetPara()
|*
|*	Ersterstellung		MA 16. Mar. 94
|*	Letzte Aenderung	MA 22. Aug. 94
|*
|*************************************************************************/

void SwTxtFrm::SetPara( SwParaPortion *pNew, sal_Bool bDelete )
{
	if ( GetCacheIdx() != MSHRT_MAX )
	{
		//Nur die Information Auswechseln, das CacheObj bleibt stehen.
		SwTxtLine *pTxtLine = (SwTxtLine*)SwTxtFrm::GetTxtCache()->
										Get( this, GetCacheIdx(), sal_False );
		if ( pTxtLine )
		{
			if( bDelete )
				delete pTxtLine->GetPara();
			pTxtLine->SetPara( pNew );
		}
		else
		{
			ASSERT( !pNew, "+SetPara: Losing SwParaPortion" );
			nCacheIdx = MSHRT_MAX;
		}
	}
	else if ( pNew )
	{	//Einen neuen einfuegen.
		SwTxtLine *pTxtLine = new SwTxtLine( this, pNew );
		if ( SwTxtFrm::GetTxtCache()->Insert( pTxtLine ) )
			nCacheIdx = pTxtLine->GetCachePos();
		else
		{
			ASSERT( sal_False, "+SetPara: InsertCache failed." );
		}
	}
}