/*************************************************************************
 *
 *  OpenOffice.org - a multi-platform office productivity suite
 *
 *  $RCSfile: trvlfnfl.cxx,v $
 *
 *  $Revision: 1.7 $
 *
 *  last change: $Author: rt $ $Date: 2005-09-09 03:07:14 $
 *
 *  The Contents of this file are made available subject to
 *  the terms of GNU Lesser General Public License Version 2.1.
 *
 *
 *    GNU Lesser General Public License Version 2.1
 *    =============================================
 *    Copyright 2005 by Sun Microsystems, Inc.
 *    901 San Antonio Road, Palo Alto, CA 94303, USA
 *
 *    This library is free software; you can redistribute it and/or
 *    modify it under the terms of the GNU Lesser General Public
 *    License version 2.1, as published by the Free Software Foundation.
 *
 *    This library 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
 *    Lesser General Public License for more details.
 *
 *    You should have received a copy of the GNU Lesser General Public
 *    License along with this library; if not, write to the Free Software
 *    Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 *    MA  02111-1307  USA
 *
 ************************************************************************/


#pragma hdrstop

#ifndef _SVDMODEL_HXX //autogen
#include <svx/svdmodel.hxx>
#endif
#ifndef _SVDPAGE_HXX //autogen
#include <svx/svdpage.hxx>
#endif

#ifndef _CRSRSH_HXX
#include <crsrsh.hxx>
#endif
#ifndef _DOC_HXX
#include <doc.hxx>
#endif
#ifndef _PAGEFRM_HXX
#include <pagefrm.hxx>
#endif
#ifndef _CNTFRM_HXX
#include <cntfrm.hxx>
#endif
#ifndef _ROOTFRM_HXX
#include <rootfrm.hxx>
#endif
#ifndef _FTNBOSS_HXX
#include <ftnboss.hxx>
#endif
#ifndef _FTNFRM_HXX
#include <ftnfrm.hxx>
#endif
#ifndef _VIEWIMP_HXX
#include <viewimp.hxx>
#endif
#ifndef _SWCRSR_HXX
#include <swcrsr.hxx>
#endif
#ifndef _DFLYOBJ_HXX
#include <dflyobj.hxx>
#endif
#ifndef _NDTXT_HXX
#include <ndtxt.hxx>
#endif
#ifndef _FLYFRM_HXX
#include <flyfrm.hxx>
#endif
#ifndef _TXTFRM_HXX
#include <txtfrm.hxx>
#endif
#ifndef _TXTFTN_HXX //autogen
#include <txtftn.hxx>
#endif
#ifndef _FTNIDX_HXX //autogen
#include <ftnidx.hxx>
#endif
#ifndef _VISCRS_HXX
#include <viscrs.hxx>
#endif
#ifndef _CALLNK_HXX
#include <callnk.hxx>
#endif

FASTBOOL SwCrsrShell::CallCrsrFN( FNCrsr fnCrsr )
{
    SwCallLink aLk( *this );        // Crsr-Moves ueberwachen,
    SwCursor* pCrsr = pTblCrsr ? pTblCrsr : pCurCrsr;
    FASTBOOL bRet = (pCrsr->*fnCrsr)();
    if( bRet )
        UpdateCrsr( SwCrsrShell::SCROLLWIN | SwCrsrShell::CHKRANGE |
                    SwCrsrShell::READONLY );
    return bRet;
}

FASTBOOL SwCursor::GotoFtnTxt()
{
    // springe aus dem Content zur Fussnote
    FASTBOOL bRet = FALSE;
    SwTxtAttr *pFtn;
    SwTxtNode* pTxtNd = GetPoint()->nNode.GetNode().GetTxtNode();

    if( pTxtNd && 0 != (
        pFtn = pTxtNd->GetTxtAttr( GetPoint()->nContent, RES_TXTATR_FTN ) ))
    {
        SwCrsrSaveState aSaveState( *this );
        GetPoint()->nNode = *((SwTxtFtn*)pFtn)->GetStartNode();

        SwCntntNode* pCNd = GetDoc()->GetNodes().GoNextSection(
                                            &GetPoint()->nNode,
                                            TRUE, !IsReadOnlyAvailable() );
        if( pCNd )
        {
            GetPoint()->nContent.Assign( pCNd, 0 );
            bRet = !IsSelOvr( SELOVER_CHECKNODESSECTION | SELOVER_TOGGLE );
        }
    }
    return bRet;
}

FASTBOOL SwCrsrShell::GotoFtnTxt()
{
    BOOL bRet = CallCrsrFN( &SwCursor::GotoFtnTxt );
    if( !bRet )
    {
        SwTxtNode* pTxtNd = _GetCrsr() ?
                   _GetCrsr()->GetPoint()->nNode.GetNode().GetTxtNode() : NULL;
        if( pTxtNd )
        {
            const SwFrm *pFrm = pTxtNd->GetFrm( &_GetCrsr()->GetSttPos(),
                                                 _GetCrsr()->Start() );
            const SwFtnBossFrm* pFtnBoss;
            sal_Bool bSkip = pFrm && pFrm->IsInFtn();
            while( pFrm && 0 != ( pFtnBoss = pFrm->FindFtnBossFrm() ) )
            {
                if( 0 != ( pFrm = pFtnBoss->FindFtnCont() ) )
                {
                    if( bSkip )
                        bSkip = sal_False;
                    else
                    {
                        const SwCntntFrm* pCnt = static_cast<const SwLayoutFrm*>
                                                        (pFrm)->ContainsCntnt();
                        if( pCnt )
                        {
                            const SwCntntNode* pNode = pCnt->GetNode();
                            _GetCrsr()->GetPoint()->nNode = *pNode;
                            _GetCrsr()->GetPoint()->nContent.Assign(
                                const_cast<SwCntntNode*>(pNode),
                                static_cast<const SwTxtFrm*>(pCnt)->GetOfst() );
                            UpdateCrsr( SwCrsrShell::SCROLLWIN |
                                SwCrsrShell::CHKRANGE | SwCrsrShell::READONLY );
                            bRet = sal_True;
                            break;
                        }
                    }
                }
                if( pFtnBoss->GetNext() && !pFtnBoss->IsPageFrm() )
                    pFrm = pFtnBoss->GetNext();
                else
                    pFrm = pFtnBoss->GetUpper();
            }
        }
    }
    return bRet;
}


FASTBOOL SwCursor::GotoFtnAnchor()
{
    // springe aus der Fussnote zum Anker
    const SwNode* pSttNd = GetNode()->FindFootnoteStartNode();
    if( pSttNd )
    {
        // durchsuche alle Fussnoten im Dokument nach diesem StartIndex
        const SwTxtFtn* pTxtFtn;
        const SwFtnIdxs& rFtnArr = pSttNd->GetDoc()->GetFtnIdxs();
        for( USHORT n = 0; n < rFtnArr.Count(); ++n )
            if( 0 != ( pTxtFtn = rFtnArr[ n ])->GetStartNode() &&
                pSttNd == &pTxtFtn->GetStartNode()->GetNode() )
            {
                SwCrsrSaveState aSaveState( *this );

                SwTxtNode& rTNd = (SwTxtNode&)pTxtFtn->GetTxtNode();

                GetPoint()->nNode = rTNd;
                GetPoint()->nContent.Assign( &rTNd, *pTxtFtn->GetStart() );

                return !IsSelOvr( SELOVER_CHECKNODESSECTION | SELOVER_TOGGLE );
            }
    }
    return FALSE;
}

FASTBOOL SwCrsrShell::GotoFtnAnchor()
{
    // springe aus der Fussnote zum Anker
    SwCallLink aLk( *this );        // Crsr-Moves ueberwachen,
    FASTBOOL bRet = pCurCrsr->GotoFtnAnchor();
    if( bRet )
    {
        // BUG 5996: Tabellen-Kopfzeile sonderbehandeln
        pCurCrsr->GetPtPos() = Point();
        UpdateCrsr( SwCrsrShell::SCROLLWIN | SwCrsrShell::CHKRANGE |
                    SwCrsrShell::READONLY );
    }
    return bRet;
}

inline sal_Bool CmpLE( const SwTxtFtn& rFtn, ULONG nNd, xub_StrLen nCnt )
{
    ULONG nTNd = rFtn.GetTxtNode().GetIndex();
    return nTNd < nNd || ( nTNd == nNd && *rFtn.GetStart() <= nCnt );
}
inline sal_Bool CmpL( const SwTxtFtn& rFtn, ULONG nNd, xub_StrLen nCnt )
{
    ULONG nTNd = rFtn.GetTxtNode().GetIndex();
    return nTNd < nNd || ( nTNd == nNd && *rFtn.GetStart() < nCnt );
}

FASTBOOL SwCursor::GotoNextFtnAnchor()
{
    const SwFtnIdxs& rFtnArr = GetDoc()->GetFtnIdxs();
    const SwTxtFtn* pTxtFtn = 0;
    USHORT nPos;

    if( rFtnArr.SeekEntry( GetPoint()->nNode, &nPos ))
    {
        // es gibt eine Fussnote mit dem Index, suche also die
        // naechstgelegene
        if( nPos < rFtnArr.Count() )
        {
            ULONG nNdPos = GetPoint()->nNode.GetIndex();
            xub_StrLen nCntPos = GetPoint()->nContent.GetIndex();

            pTxtFtn = rFtnArr[ nPos ];
            // suche vorewaerts zur naechsten
            if( CmpLE( *pTxtFtn, nNdPos, nCntPos ) )
            {
                pTxtFtn = 0;
                for( ++nPos; nPos < rFtnArr.Count(); ++nPos )
                {
                    pTxtFtn = rFtnArr[ nPos ];
                    if( !CmpLE( *pTxtFtn, nNdPos, nCntPos ) )
                        break;      // gefunden
                    pTxtFtn = 0;
                }
            }
            else if( nPos )
            {
                // suche rueckwaerts zur vorherigen
                pTxtFtn = 0;
                while( nPos )
                {
                    pTxtFtn = rFtnArr[ --nPos ];
                    if( CmpLE( *pTxtFtn, nNdPos, nCntPos ) )
                    {
                        pTxtFtn = rFtnArr[ ++nPos ];
                        break;      // gefunden
                    }
//                  pTxtFtn = 0;
                }
            }
        }
    }
    else if( nPos < rFtnArr.Count() )
        pTxtFtn = rFtnArr[ nPos ];

    FASTBOOL bRet = 0 != pTxtFtn;
    if( bRet )
    {
        SwCrsrSaveState aSaveState( *this );

        SwTxtNode& rTNd = (SwTxtNode&)pTxtFtn->GetTxtNode();
        GetPoint()->nNode = rTNd;
        GetPoint()->nContent.Assign( &rTNd, *pTxtFtn->GetStart() );
        bRet = !IsSelOvr();
    }
    return bRet;
}

FASTBOOL SwCursor::GotoPrevFtnAnchor()
{
    const SwFtnIdxs& rFtnArr = GetDoc()->GetFtnIdxs();
    const SwTxtFtn* pTxtFtn = 0;
    USHORT nPos;

    if( rFtnArr.SeekEntry( GetPoint()->nNode, &nPos ) )
    {
        // es gibt eine Fussnote mit dem Index, suche also die
        // naechstgelegene
        ULONG nNdPos = GetPoint()->nNode.GetIndex();
        xub_StrLen nCntPos = GetPoint()->nContent.GetIndex();

        pTxtFtn = rFtnArr[ nPos ];
        // suche vorwaerts zur naechsten
        if( CmpL( *pTxtFtn, nNdPos, nCntPos ))
        {
            for( ++nPos; nPos < rFtnArr.Count(); ++nPos )
            {
                pTxtFtn = rFtnArr[ nPos ];
                if( !CmpL( *pTxtFtn, nNdPos, nCntPos ) )
                {
                    pTxtFtn = rFtnArr[ nPos-1 ];
                    break;
                }
            }
        }
        else if( nPos )
        {
            // suche rueckwaerts zur vorherigen
            pTxtFtn = 0;
            while( nPos )
            {
                pTxtFtn = rFtnArr[ --nPos ];
                if( CmpL( *pTxtFtn, nNdPos, nCntPos ))
                    break;      // gefunden
                pTxtFtn = 0;
            }
        }
        else
            pTxtFtn = 0;
    }
    else if( nPos )
        pTxtFtn = rFtnArr[ nPos-1 ];

    FASTBOOL bRet = 0 != pTxtFtn;
    if( bRet )
    {
        SwCrsrSaveState aSaveState( *this );

        SwTxtNode& rTNd = (SwTxtNode&)pTxtFtn->GetTxtNode();
        GetPoint()->nNode = rTNd;
        GetPoint()->nContent.Assign( &rTNd, *pTxtFtn->GetStart() );
        bRet = !IsSelOvr();
    }
    return bRet;
}

FASTBOOL SwCrsrShell::GotoNextFtnAnchor()
{
    return CallCrsrFN( &SwCursor::GotoNextFtnAnchor );
}

FASTBOOL SwCrsrShell::GotoPrevFtnAnchor()
{
    return CallCrsrFN( &SwCursor::GotoPrevFtnAnchor );
}

// springe aus dem Rahmen zum Anker


FASTBOOL SwCrsrShell::GotoFlyAnchor()
{
    SET_CURR_SHELL( this );
    const SwFrm* pFrm = GetCurrFrm();
    do {
        pFrm = pFrm->GetUpper();
    } while( pFrm && !pFrm->IsFlyFrm() );

    if( !pFrm )     // ist kein FlyFrame
        return FALSE;

    SwCallLink aLk( *this );        // Crsr-Moves ueberwachen,
    SwCrsrSaveState aSaveState( *pCurCrsr );

    // springe in den BodyFrame, der am naechsten vom Fly liegt
    SwRect aTmpRect( aCharRect );
    if( !pFrm->Frm().IsInside( aTmpRect ))
        aTmpRect = pFrm->Frm();
    Point aPt( aTmpRect.Left(), aTmpRect.Top() +
                ( aTmpRect.Bottom() - aTmpRect.Top() ) / 2 );
    aPt.X() = aPt.X() > (pFrm->Frm().Left() + (pFrm->Frm().SSize().Width() / 2 ))
                ? pFrm->Frm().Right()
                : pFrm->Frm().Left();

    const SwPageFrm* pPageFrm = pFrm->FindPageFrm();
    const SwCntntFrm* pFndFrm = pPageFrm->GetCntntPos( aPt, FALSE, TRUE );
    pFndFrm->GetCrsrOfst( pCurCrsr->GetPoint(), aPt );

    FASTBOOL bRet = !pCurCrsr->IsInProtectTable() && !pCurCrsr->IsSelOvr();
    if( bRet )
        UpdateCrsr( SwCrsrShell::SCROLLWIN | SwCrsrShell::CHKRANGE |
                    SwCrsrShell::READONLY );
    return bRet;
}