/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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#ifdef _MSC_VER
#pragma hdrstop
#endif

//------------------------------------------------------------------------
//
// Global header
//
//------------------------------------------------------------------------

#include <limits.h>
#include <vector>
#include <algorithm>


//------------------------------------------------------------------------
//
// Project-local header
//
//------------------------------------------------------------------------

#include "unoedprx.hxx"
#include "unotext.hxx"
#include "editeng.hxx"

namespace binfilter {

using namespace ::com::sun::star;


class SvxAccessibleTextIndex
{
public:
    SvxAccessibleTextIndex() :
        mnPara(0),
        mnIndex(0),
        mnEEIndex(0),
        mnFieldOffset(0),
        mnFieldLen(0),
        mbInField(sal_False),
        mnBulletOffset(0),
        mnBulletLen(0),
        mbInBullet(sal_False) {};
    ~SvxAccessibleTextIndex() {};

    // Get/Set current paragraph
    void SetParagraph( USHORT nPara )
    {
        mnPara = nPara;
    }
    USHORT GetParagraph() const { return mnPara; }

    /** Set the index in the UAA semantic

        @param nIndex
         The index from the UA API (fields and bullets are expanded)

        @param rTF
        The text forwarder to use in the calculations
     */
    void SetIndex( sal_Int32 nIndex, const SvxTextForwarder& rTF );
    void SetIndex( USHORT nPara, sal_Int32 nIndex, const SvxTextForwarder& rTF ) { SetParagraph(nPara); SetIndex(nIndex, rTF); }
    sal_Int32 GetIndex() const { return mnIndex; }

    /** Set the index in the edit engine semantic

        Update the object state to reflect the given index position in
        EditEngine/Outliner index values

        @param nEEIndex
         The index from the edit engine (fields span exactly one index increment)

        @param rTF
        The text forwarder to use in the calculations
     */
    void SetEEIndex( USHORT nEEIndex, const SvxTextForwarder& rTF );
    void SetEEIndex( USHORT nPara, USHORT nEEIndex, const SvxTextForwarder& rTF ) { SetParagraph(nPara); SetEEIndex(nEEIndex, rTF); }
    USHORT GetEEIndex() const;

    void SetFieldOffset( sal_Int32 nOffset, sal_Int32 nLen ) { mnFieldOffset = nOffset; mnFieldLen = nLen; }
    sal_Int32 GetFieldOffset() const { return mnFieldOffset; }
    sal_Int32 GetFieldLen() const { return mnFieldLen; }
    void AreInField( sal_Bool bInField = sal_True ) { mbInField = bInField; }
    sal_Bool InField() const { return mbInField; }

    void SetBulletOffset( sal_Int32 nOffset, sal_Int32 nLen ) { mnBulletOffset = nOffset; mnBulletLen = nLen; }
    sal_Int32 GetBulletOffset() const { return mnBulletOffset; }
    sal_Int32 GetBulletLen() const { return mnBulletLen; }
    void AreInBullet( sal_Bool bInBullet = sal_True ) { mbInBullet = bInBullet; }
    sal_Bool InBullet() const { return mbInBullet; }

    /// returns false if the given range is non-editable (e.g. contains bullets or _parts_ of fields)
    sal_Bool IsEditableRange( const SvxAccessibleTextIndex& rEnd ) const;

private:
    USHORT    mnPara;
    sal_Int32 mnIndex;
    sal_Int32 mnEEIndex;
    sal_Int32 mnFieldOffset;
    sal_Int32 mnFieldLen;
    sal_Bool  mbInField;
    sal_Int32 mnBulletOffset;
    sal_Int32 mnBulletLen;
    sal_Bool  mbInBullet;
};

ESelection MakeEESelection( const SvxAccessibleTextIndex& rStart, const SvxAccessibleTextIndex& rEnd )
{
    // deal with field special case: to really get a field contained
    // within a selection, the start index must be before or on the
    // field, the end index after it.

    // The SvxAccessibleTextIndex.GetEEIndex method gives the index on
    // the field, as long the input index is on the field. Thus,
    // correction necessary for the end index

    // Therefore, for _ranges_, if part of the field is touched, all
    // of the field must be selected
    if( rStart.GetParagraph() <= rEnd.GetParagraph() ||
        (rStart.GetParagraph() == rEnd.GetParagraph() &&
         rStart.GetEEIndex() <= rEnd.GetEEIndex()) )
    {
        if( rEnd.InField() && rEnd.GetFieldOffset() )
            return ESelection( rStart.GetParagraph(), rStart.GetEEIndex(),
                               rEnd.GetParagraph(), rEnd.GetEEIndex()+1 );
    }
    else if( rStart.GetParagraph() > rEnd.GetParagraph() ||
             (rStart.GetParagraph() == rEnd.GetParagraph() &&
              rStart.GetEEIndex() > rEnd.GetEEIndex()) )
    {
        if( rStart.InField() && rStart.GetFieldOffset()  )
            return ESelection( rStart.GetParagraph(), rStart.GetEEIndex()+1,
                               rEnd.GetParagraph(), rEnd.GetEEIndex() );
    }

    return ESelection( rStart.GetParagraph(), rStart.GetEEIndex(),
                       rEnd.GetParagraph(), rEnd.GetEEIndex() );
}

ESelection MakeEESelection( const SvxAccessibleTextIndex& rIndex )
{
    return ESelection( rIndex.GetParagraph(), rIndex.GetEEIndex(),
                       rIndex.GetParagraph(), rIndex.GetEEIndex() + 1 );
}

USHORT SvxAccessibleTextIndex::GetEEIndex() const
{
    DBG_ASSERT(mnEEIndex >= 0 && mnEEIndex <= USHRT_MAX,
               "SvxAccessibleTextIndex::GetEEIndex: index value overflow");

    return static_cast< USHORT > (mnEEIndex);
}

void SvxAccessibleTextIndex::SetEEIndex( USHORT nEEIndex, const SvxTextForwarder& rTF )
{
    // reset
    mnFieldOffset = 0;
    mbInField = sal_False;
    mnFieldLen = 0;
    mnBulletOffset = 0;
    mbInBullet = sal_False;
    mnBulletLen = 0;

    // set known values
    mnEEIndex = nEEIndex;

    // calculate unknowns
    USHORT                  nCurrField, nFieldCount = rTF.GetFieldCount( GetParagraph() );

    mnIndex = nEEIndex;

    EBulletInfo aBulletInfo = rTF.GetBulletInfo( GetParagraph() );

    // any text bullets?
    if( aBulletInfo.nParagraph != EE_PARA_NOT_FOUND &&
        aBulletInfo.bVisible &&
        aBulletInfo.nType != SVX_NUM_BITMAP )
    {
        mnIndex += aBulletInfo.aText.Len();
    }

    for( nCurrField=0; nCurrField < nFieldCount; ++nCurrField )
    {
        EFieldInfo aFieldInfo( rTF.GetFieldInfo( GetParagraph(), nCurrField ) );

        if( aFieldInfo.aPosition.nIndex > nEEIndex )
            break;

        if( aFieldInfo.aPosition.nIndex == nEEIndex )
        {
            AreInField();
            break;
        }

        // #106010#
        mnIndex += ::std::max(aFieldInfo.aCurrentText.Len()-1, 0);
    }
}

void SvxAccessibleTextIndex::SetIndex( sal_Int32 nIndex, const SvxTextForwarder& rTF )
{
    // reset
    mnFieldOffset = 0;
    mbInField = sal_False;
    mnFieldLen = 0;
    mnBulletOffset = 0;
    mbInBullet = sal_False;
    mnBulletLen = 0;

    // set known values
    mnIndex = nIndex;

    // calculate unknowns
    USHORT                  nCurrField, nFieldCount = rTF.GetFieldCount( GetParagraph() );

    DBG_ASSERT(nIndex >= 0 && nIndex <= USHRT_MAX,
               "SvxAccessibleTextIndex::SetIndex: index value overflow");

    mnEEIndex = nIndex;

    EBulletInfo aBulletInfo = rTF.GetBulletInfo( GetParagraph() );

    // any text bullets?
    if( aBulletInfo.nParagraph != EE_PARA_NOT_FOUND &&
        aBulletInfo.bVisible &&
        aBulletInfo.nType != SVX_NUM_BITMAP )
    {
        sal_Int32 nBulletLen = aBulletInfo.aText.Len();

        if( nIndex < nBulletLen )
        {
            AreInBullet();
            SetBulletOffset( nIndex, nBulletLen );
            mnEEIndex = 0;
            return;
        }

        mnEEIndex = mnEEIndex - nBulletLen;
    }

    for( nCurrField=0; nCurrField < nFieldCount; ++nCurrField )
    {
        EFieldInfo aFieldInfo( rTF.GetFieldInfo( GetParagraph(), nCurrField ) );

        // we're before a field
        if( aFieldInfo.aPosition.nIndex > mnEEIndex )
            break;

        // #106010#
        mnEEIndex -= ::std::max(aFieldInfo.aCurrentText.Len()-1, 0);

        // we're within a field
        if( aFieldInfo.aPosition.nIndex >= mnEEIndex )
        {
            AreInField();
            SetFieldOffset( ::std::max(aFieldInfo.aCurrentText.Len()-1, 0) - (aFieldInfo.aPosition.nIndex - mnEEIndex),
                            aFieldInfo.aCurrentText.Len() );
            mnEEIndex = aFieldInfo.aPosition.nIndex ;
            break;
        }
    }
}

sal_Bool SvxAccessibleTextIndex::IsEditableRange( const SvxAccessibleTextIndex& rEnd ) const
{
    if( GetIndex() > rEnd.GetIndex() )
        return rEnd.IsEditableRange( *this );

    if( InBullet() || rEnd.InBullet() )
        return sal_False;

    if( InField() && GetFieldOffset() )
        return sal_False; // within field

    if( rEnd.InField() && rEnd.GetFieldOffset() >= rEnd.GetFieldLen() - 1 )
        return sal_False; // within field

    return sal_True;
}

//---------------------------------------------------------------------------------

SvxEditSourceAdapter::SvxEditSourceAdapter() : mbEditSourceValid( sal_False )
{
}

SvxEditSourceAdapter::~SvxEditSourceAdapter()
{
}

SvxEditSource* SvxEditSourceAdapter::Clone() const
{
    if( mbEditSourceValid && mpAdaptee.get() )
    {
        SAL_WNODEPRECATED_DECLARATIONS_PUSH
        ::std::auto_ptr< SvxEditSource > pClonedAdaptee( mpAdaptee->Clone() );
        SAL_WNODEPRECATED_DECLARATIONS_POP

        if( pClonedAdaptee.get() )
        {
            SvxEditSourceAdapter* pClone = new SvxEditSourceAdapter();

            if( pClone )
            {
                pClone->SetEditSource( pClonedAdaptee );
                return pClone;
            }
        }
    }

    return NULL;
}

SvxAccessibleTextAdapter* SvxEditSourceAdapter::GetTextForwarderAdapter()
{
    if( mbEditSourceValid && mpAdaptee.get() )
    {
        SvxTextForwarder* pTextForwarder = mpAdaptee->GetTextForwarder();

        if( pTextForwarder )
        {
            maTextAdapter.SetForwarder(*pTextForwarder);

            return &maTextAdapter;
        }
    }

    return NULL;
}

SvxTextForwarder* SvxEditSourceAdapter::GetTextForwarder()
{
    return GetTextForwarderAdapter();
}

SvxViewForwarder* SvxEditSourceAdapter::GetViewForwarder()
{
    if( mbEditSourceValid && mpAdaptee.get() )
        return mpAdaptee->GetViewForwarder();

    return NULL;
}

SvxAccessibleTextEditViewAdapter* SvxEditSourceAdapter::GetEditViewForwarderAdapter( sal_Bool bCreate )
{
    if( mbEditSourceValid && mpAdaptee.get() )
    {
        SvxEditViewForwarder* pEditViewForwarder = mpAdaptee->GetEditViewForwarder(bCreate);

        if( pEditViewForwarder )
        {
            SvxAccessibleTextAdapter* pTextAdapter = GetTextForwarderAdapter();

            if( pTextAdapter )
            {
                maEditViewAdapter.SetForwarder(*pEditViewForwarder, *pTextAdapter);

                return &maEditViewAdapter;
            }
        }
    }

    return NULL;
}

SvxEditViewForwarder* SvxEditSourceAdapter::GetEditViewForwarder( sal_Bool bCreate )
{
    return GetEditViewForwarderAdapter( bCreate );
}

void SvxEditSourceAdapter::UpdateData()
{
    if( mbEditSourceValid && mpAdaptee.get() )
        mpAdaptee->UpdateData();
}

SfxBroadcaster& SvxEditSourceAdapter::GetBroadcaster() const
{
    if( mbEditSourceValid && mpAdaptee.get() )
        return mpAdaptee->GetBroadcaster();

    return maDummyBroadcaster;
}

SAL_WNODEPRECATED_DECLARATIONS_PUSH
void SvxEditSourceAdapter::SetEditSource( ::std::auto_ptr< SvxEditSource > pAdaptee )
{
    if( pAdaptee.get() )
    {
        mpAdaptee = pAdaptee;
        mbEditSourceValid = sal_True;
    }
    else
    {
        // do a lazy delete (prevents us from deleting the broadcaster
        // from within a broadcast in
        // AccessibleTextHelper_Impl::Notify)
        mbEditSourceValid = sal_False;
    }
}
SAL_WNODEPRECATED_DECLARATIONS_POP

//--------------------------------------------------------------------------------------

SvxAccessibleTextAdapter::SvxAccessibleTextAdapter() : mrTextForwarder( NULL )
{
}

SvxAccessibleTextAdapter::~SvxAccessibleTextAdapter()
{
}

USHORT SvxAccessibleTextAdapter::GetParagraphCount() const
{
    DBG_ASSERT(mrTextForwarder, "SvxAccessibleTextAdapter: no forwarder");

    return mrTextForwarder->GetParagraphCount();
}

USHORT SvxAccessibleTextAdapter::GetTextLen( USHORT nParagraph ) const
{
    DBG_ASSERT(mrTextForwarder, "SvxAccessibleTextAdapter: no forwarder");

    SvxAccessibleTextIndex aIndex;
    aIndex.SetEEIndex( nParagraph, mrTextForwarder->GetTextLen( nParagraph ), *this );

    return static_cast< USHORT >(aIndex.GetIndex());
}

String SvxAccessibleTextAdapter::GetText( const ESelection& rSel ) const
{
    DBG_ASSERT(mrTextForwarder, "SvxAccessibleTextAdapter: no forwarder");

    SvxAccessibleTextIndex aStartIndex;
    SvxAccessibleTextIndex aEndIndex;

    aStartIndex.SetIndex( rSel.nStartPara, rSel.nStartPos, *this );
    aEndIndex.SetIndex( rSel.nEndPara, rSel.nEndPos, *this );

    // normalize selection
    if( rSel.nStartPara > rSel.nEndPara ||
        (rSel.nStartPara == rSel.nEndPara && rSel.nStartPos > rSel.nEndPos) )
    {
        ::std::swap( aStartIndex, aEndIndex );
    }

    String sStr = mrTextForwarder->GetText( MakeEESelection(aStartIndex, aEndIndex) );

    // trim field text, if necessary
    if( aStartIndex.InField() )
    {
        DBG_ASSERT(aStartIndex.GetFieldOffset() >= 0 &&
                   aStartIndex.GetFieldOffset() <= USHRT_MAX,
                   "SvxAccessibleTextIndex::GetText: index value overflow");

        sStr.Erase(0, static_cast< USHORT > (aStartIndex.GetFieldOffset()) );
    }
    if( aEndIndex.InField() && aEndIndex.GetFieldOffset() )
    {
        DBG_ASSERT(sStr.Len() - (aEndIndex.GetFieldLen() - aEndIndex.GetFieldOffset()) >= 0 &&
                   sStr.Len() - (aEndIndex.GetFieldLen() - aEndIndex.GetFieldOffset()) <= USHRT_MAX,
                   "SvxAccessibleTextIndex::GetText: index value overflow");

        sStr = sStr.Copy(0, static_cast< USHORT > (sStr.Len() - (aEndIndex.GetFieldLen() - aEndIndex.GetFieldOffset())) );
    }

    EBulletInfo aBulletInfo1 = GetBulletInfo( static_cast< USHORT >(aStartIndex.GetParagraph()) );
    EBulletInfo aBulletInfo2 = GetBulletInfo( static_cast< USHORT >(aEndIndex.GetParagraph()) );

    if( aStartIndex.InBullet() )
    {
        // prepend leading bullet
        String sBullet = aBulletInfo1.aText;

        DBG_ASSERT(aStartIndex.GetBulletOffset() >= 0 &&
                   aStartIndex.GetBulletOffset() <= USHRT_MAX,
                   "SvxAccessibleTextIndex::GetText: index value overflow");

        sBullet.Erase(0, static_cast< USHORT > (aStartIndex.GetBulletOffset()) );

        sBullet += sStr;
        sStr = sBullet;
    }

    if( aEndIndex.InBullet() )
    {
        // append trailing bullet
        sStr += aBulletInfo2.aText;;

        DBG_ASSERT(sStr.Len() - (aEndIndex.GetBulletLen() - aEndIndex.GetBulletOffset()) >= 0 &&
                   sStr.Len() - (aEndIndex.GetBulletLen() - aEndIndex.GetBulletOffset()) <= USHRT_MAX,
                   "SvxAccessibleTextIndex::GetText: index value overflow");

        sStr = sStr.Copy(0, static_cast< USHORT > (sStr.Len() - (aEndIndex.GetBulletLen() - aEndIndex.GetBulletOffset())) );
    }
    else if( aStartIndex.GetParagraph() != aEndIndex.GetParagraph() &&
             HaveTextBullet( aEndIndex.GetParagraph() ) )
    {
        String sBullet = aBulletInfo2.aText;

        DBG_ASSERT(sBullet.Len() - (aEndIndex.GetBulletLen() - aEndIndex.GetBulletOffset()) >= 0 &&
                   sBullet.Len() - (aEndIndex.GetBulletLen() - aEndIndex.GetBulletOffset()) <= USHRT_MAX,
                   "SvxAccessibleTextIndex::GetText: index value overflow");

        sBullet = sBullet.Copy(0, static_cast< USHORT > (sBullet.Len() - (aEndIndex.GetBulletLen() - aEndIndex.GetBulletOffset())) );

        // insert bullet
        sStr.Insert( sBullet,
                     static_cast< USHORT > (GetTextLen(aStartIndex.GetParagraph()) - aStartIndex.GetIndex()) );
    }

    return sStr;
}

SfxItemSet SvxAccessibleTextAdapter::GetAttribs( const ESelection& rSel, BOOL bOnlyHardAttrib ) const
{
    DBG_ASSERT(mrTextForwarder, "SvxAccessibleTextAdapter: no forwarder");

    SvxAccessibleTextIndex aStartIndex;
    SvxAccessibleTextIndex aEndIndex;

    aStartIndex.SetIndex( rSel.nStartPara, rSel.nStartPos, *this );
    aEndIndex.SetIndex( rSel.nEndPara, rSel.nEndPos, *this );

    return mrTextForwarder->GetAttribs( MakeEESelection(aStartIndex, aEndIndex),
                                        bOnlyHardAttrib );
}

SfxItemSet SvxAccessibleTextAdapter::GetParaAttribs( USHORT nPara ) const
{
    DBG_ASSERT(mrTextForwarder, "SvxAccessibleTextAdapter: no forwarder");

    return mrTextForwarder->GetParaAttribs( nPara );
}

void SvxAccessibleTextAdapter::SetParaAttribs( USHORT nPara, const SfxItemSet& rSet )
{
    DBG_ASSERT(mrTextForwarder, "SvxAccessibleTextAdapter: no forwarder");

    mrTextForwarder->SetParaAttribs( nPara, rSet );
}

void SvxAccessibleTextAdapter::GetPortions( USHORT nPara, SvUShorts& rList ) const
{
    DBG_ASSERT(mrTextForwarder, "SvxAccessibleTextAdapter: no forwarder");

    mrTextForwarder->GetPortions( nPara, rList );
}

USHORT SvxAccessibleTextAdapter::GetItemState( const ESelection& rSel, USHORT nWhich ) const
{
    DBG_ASSERT(mrTextForwarder, "SvxAccessibleTextAdapter: no forwarder");

    SvxAccessibleTextIndex aStartIndex;
    SvxAccessibleTextIndex aEndIndex;

    aStartIndex.SetIndex( rSel.nStartPara, rSel.nStartPos, *this );
    aEndIndex.SetIndex( rSel.nEndPara, rSel.nEndPos, *this );

    return mrTextForwarder->GetItemState( MakeEESelection(aStartIndex, aEndIndex),
                                          nWhich );
}

USHORT SvxAccessibleTextAdapter::GetItemState( USHORT nPara, USHORT nWhich ) const
{
    DBG_ASSERT(mrTextForwarder, "SvxAccessibleTextAdapter: no forwarder");

    return mrTextForwarder->GetItemState( nPara, nWhich );
}

void SvxAccessibleTextAdapter::QuickInsertText( const String& rText, const ESelection& rSel )
{
    DBG_ASSERT(mrTextForwarder, "SvxAccessibleTextAdapter: no forwarder");

    SvxAccessibleTextIndex aStartIndex;
    SvxAccessibleTextIndex aEndIndex;

    aStartIndex.SetIndex( rSel.nStartPara, rSel.nStartPos, *this );
    aEndIndex.SetIndex( rSel.nEndPara, rSel.nEndPos, *this );

    mrTextForwarder->QuickInsertText( rText,
                                      MakeEESelection(aStartIndex, aEndIndex) );
}

void SvxAccessibleTextAdapter::QuickInsertField( const SvxFieldItem& rFld, const ESelection& rSel )
{
    DBG_ASSERT(mrTextForwarder, "SvxAccessibleTextAdapter: no forwarder");

    SvxAccessibleTextIndex aStartIndex;
    SvxAccessibleTextIndex aEndIndex;

    aStartIndex.SetIndex( rSel.nStartPara, rSel.nStartPos, *this );
    aEndIndex.SetIndex( rSel.nEndPara, rSel.nEndPos, *this );

    mrTextForwarder->QuickInsertField( rFld,
                                       MakeEESelection(aStartIndex, aEndIndex) );
}

void SvxAccessibleTextAdapter::QuickSetAttribs( const SfxItemSet& rSet, const ESelection& rSel )
{
    DBG_ASSERT(mrTextForwarder, "SvxAccessibleTextAdapter: no forwarder");

    SvxAccessibleTextIndex aStartIndex;
    SvxAccessibleTextIndex aEndIndex;

    aStartIndex.SetIndex( rSel.nStartPara, rSel.nStartPos, *this );
    aEndIndex.SetIndex( rSel.nEndPara, rSel.nEndPos, *this );

    mrTextForwarder->QuickSetAttribs( rSet,
                                      MakeEESelection(aStartIndex, aEndIndex) );
}

void SvxAccessibleTextAdapter::QuickInsertLineBreak( const ESelection& rSel )
{
    DBG_ASSERT(mrTextForwarder, "SvxAccessibleTextAdapter: no forwarder");

    SvxAccessibleTextIndex aStartIndex;
    SvxAccessibleTextIndex aEndIndex;

    aStartIndex.SetIndex( rSel.nStartPara, rSel.nStartPos, *this );
    aEndIndex.SetIndex( rSel.nEndPara, rSel.nEndPos, *this );

    mrTextForwarder->QuickInsertLineBreak( MakeEESelection(aStartIndex, aEndIndex) );
}

SfxItemPool* SvxAccessibleTextAdapter::GetPool() const
{
    DBG_ASSERT(mrTextForwarder, "SvxAccessibleTextAdapter: no forwarder");

    return mrTextForwarder->GetPool();
}

XubString SvxAccessibleTextAdapter::CalcFieldValue( const SvxFieldItem& rField, USHORT nPara, USHORT nPos, Color*& rpTxtColor, Color*& rpFldColor )
{
    DBG_ASSERT(mrTextForwarder, "SvxAccessibleTextAdapter: no forwarder");

    return mrTextForwarder->CalcFieldValue( rField, nPara, nPos, rpTxtColor, rpFldColor );
}

BOOL SvxAccessibleTextAdapter::IsValid() const
{
    DBG_ASSERT(mrTextForwarder, "SvxAccessibleTextAdapter: no forwarder");

    if( mrTextForwarder )
        return mrTextForwarder->IsValid();
    else
        return sal_False;
}

LanguageType SvxAccessibleTextAdapter::GetLanguage( USHORT nPara, USHORT nPos ) const
{
    DBG_ASSERT(mrTextForwarder, "SvxAccessibleTextAdapter: no forwarder");

    SvxAccessibleTextIndex aIndex;

    aIndex.SetIndex( nPara, nPos, *this );

    return mrTextForwarder->GetLanguage( nPara, aIndex.GetEEIndex() );
}

USHORT SvxAccessibleTextAdapter::GetFieldCount( USHORT nPara ) const
{
    DBG_ASSERT(mrTextForwarder, "SvxAccessibleTextAdapter: no forwarder");

    return mrTextForwarder->GetFieldCount( nPara );
}

EFieldInfo SvxAccessibleTextAdapter::GetFieldInfo( USHORT nPara, USHORT nField ) const
{
    DBG_ASSERT(mrTextForwarder, "SvxAccessibleTextAdapter: no forwarder");

    return mrTextForwarder->GetFieldInfo( nPara, nField );
}

EBulletInfo SvxAccessibleTextAdapter::GetBulletInfo( USHORT nPara ) const
{
    DBG_ASSERT(mrTextForwarder, "SvxAccessibleTextAdapter: no forwarder");

    return mrTextForwarder->GetBulletInfo( nPara );
}

Rectangle SvxAccessibleTextAdapter::GetCharBounds( USHORT nPara, USHORT nIndex ) const
{
    DBG_ASSERT(mrTextForwarder, "SvxAccessibleTextAdapter: no forwarder");

    SvxAccessibleTextIndex aIndex;
    aIndex.SetIndex( nPara, nIndex, *this );

    // preset if anything goes wrong below
    // n-th char in GetParagraphIndex's paragraph
    Rectangle aRect = mrTextForwarder->GetCharBounds( nPara, static_cast< USHORT >( aIndex.GetEEIndex() ) );

    if( aIndex.InBullet() )
    {
        EBulletInfo aBulletInfo = GetBulletInfo( nPara );
        aRect = aBulletInfo.aBounds; // better than nothing
    }
    else
    {
        // handle field content manually
        if( aIndex.InField() )
        {
            OutputDevice* pOutDev = GetRefDevice();

            DBG_ASSERT(pOutDev!=NULL, "SvxAccessibleTextAdapter::GetCharBounds: No ref device");

            if( pOutDev )
            {
                ESelection aSel = MakeEESelection( aIndex );
                SvxFont aFont = EditEngine::CreateSvxFontFromItemSet( mrTextForwarder->GetAttribs( aSel ) );
                Rectangle aStartRect = mrTextForwarder->GetCharBounds( nPara, static_cast< USHORT >( aIndex.GetEEIndex() ) );
                aRect = aStartRect;
            }
        }
    }

    return aRect;
}

Rectangle SvxAccessibleTextAdapter::GetParaBounds( USHORT nPara ) const
{
    DBG_ASSERT(mrTextForwarder, "SvxAccessibleTextAdapter: no forwarder");

    EBulletInfo aBulletInfo = GetBulletInfo( nPara );

    if( aBulletInfo.nParagraph != EE_PARA_NOT_FOUND &&
        aBulletInfo.bVisible &&
        aBulletInfo.nType != SVX_NUM_BITMAP )
    {
        // include bullet in para bounding box
        Rectangle aRect( mrTextForwarder->GetParaBounds( nPara ) );

        aRect.Union( aBulletInfo.aBounds );

        return aRect;
    }
    else
        return mrTextForwarder->GetParaBounds( nPara );
}

MapMode SvxAccessibleTextAdapter::GetMapMode() const
{
    DBG_ASSERT(mrTextForwarder, "SvxAccessibleTextAdapter: no forwarder");

    return mrTextForwarder->GetMapMode();
}

OutputDevice* SvxAccessibleTextAdapter::GetRefDevice() const
{
    DBG_ASSERT(mrTextForwarder, "SvxAccessibleTextAdapter: no forwarder");

    return mrTextForwarder->GetRefDevice();
}

sal_Bool SvxAccessibleTextAdapter::GetIndexAtPoint( const Point& rPoint, USHORT& nPara, USHORT& nIndex ) const
{
    DBG_ASSERT(mrTextForwarder, "SvxAccessibleTextAdapter: no forwarder");

    if( !mrTextForwarder->GetIndexAtPoint( rPoint, nPara, nIndex ) )
        return sal_False;

    SvxAccessibleTextIndex aIndex;
    aIndex.SetEEIndex(nPara, nIndex, *this);

    DBG_ASSERT(aIndex.GetIndex() >= 0 && aIndex.GetIndex() <= USHRT_MAX,
               "SvxAccessibleTextIndex::SetIndex: index value overflow");

    nIndex = static_cast< USHORT > (aIndex.GetIndex());

    EBulletInfo aBulletInfo = GetBulletInfo( nPara );

    // any text bullets?
    if( aBulletInfo.nParagraph != EE_PARA_NOT_FOUND &&
        aBulletInfo.bVisible &&
        aBulletInfo.nType != SVX_NUM_BITMAP )
    {
        if( aBulletInfo.aBounds.IsInside( rPoint) )
        {
            OutputDevice* pOutDev = GetRefDevice();

            DBG_ASSERT(pOutDev!=NULL, "SvxAccessibleTextAdapter::GetIndexAtPoint: No ref device");

            if( !pOutDev )
                return sal_False;

            Point aPoint = rPoint;
            aPoint.Move( -aBulletInfo.aBounds.Left(), -aBulletInfo.aBounds.Top() );

            nIndex = 0;
            return sal_True;
        }
    }

    if( aIndex.InField() )
    {
        OutputDevice* pOutDev = GetRefDevice();

        DBG_ASSERT(pOutDev!=NULL, "SvxAccessibleTextAdapter::GetIndexAtPoint: No ref device");

        if( !pOutDev )
            return sal_False;

        ESelection aSelection = MakeEESelection( aIndex );
        SvxFont aFont = EditEngine::CreateSvxFontFromItemSet( mrTextForwarder->GetAttribs( aSelection ) );

        Rectangle aRect = mrTextForwarder->GetCharBounds( nPara, aIndex.GetEEIndex() );
        Point aPoint = rPoint;
        aPoint.Move( -aRect.Left(), -aRect.Top() );

        nIndex = static_cast< USHORT >( aIndex.GetIndex() );
        return sal_True;
    }

    return sal_True;
}

sal_Bool SvxAccessibleTextAdapter::GetWordIndices( USHORT nPara, USHORT nIndex, USHORT& nStart, USHORT& nEnd ) const
{
    DBG_ASSERT(mrTextForwarder, "SvxAccessibleTextAdapter: no forwarder");

    SvxAccessibleTextIndex aIndex;
    aIndex.SetIndex(nPara, nIndex, *this);
    nIndex = aIndex.GetEEIndex();

    if( aIndex.InBullet() )
    {
        DBG_ASSERT(aIndex.GetBulletLen() >= 0 &&
                   aIndex.GetBulletLen() <= USHRT_MAX,
                   "SvxAccessibleTextIndex::SetIndex: index value overflow");

        // always treat bullet as separate word
        nStart = 0;
        nEnd = static_cast< USHORT > (aIndex.GetBulletLen());

        return sal_True;
    }

    if( aIndex.InField() )
    {
        DBG_ASSERT(aIndex.GetIndex() - aIndex.GetFieldOffset() >= 0 &&
                   aIndex.GetIndex() - aIndex.GetFieldOffset() <= USHRT_MAX &&
                   nStart + aIndex.GetFieldLen() >= 0 &&
                   nStart + aIndex.GetFieldLen() <= USHRT_MAX,
                   "SvxAccessibleTextIndex::SetIndex: index value overflow");

        // always treat field as separate word
        // TODO: to circumvent this, _we_ would have to do the break iterator stuff!
        nStart = static_cast< USHORT > (aIndex.GetIndex() - aIndex.GetFieldOffset());
        nEnd = static_cast< USHORT > (nStart + aIndex.GetFieldLen());

        return sal_True;
    }

    if( !mrTextForwarder->GetWordIndices( nPara, nIndex, nStart, nEnd ) )
        return sal_False;

    aIndex.SetEEIndex( nPara, nStart, *this );
    DBG_ASSERT(aIndex.GetIndex() >= 0 &&
               aIndex.GetIndex() <= USHRT_MAX,
               "SvxAccessibleTextIndex::SetIndex: index value overflow");
    nStart = static_cast< USHORT > (aIndex.GetIndex());

    aIndex.SetEEIndex( nPara, nEnd, *this );
    DBG_ASSERT(aIndex.GetIndex() >= 0 &&
               aIndex.GetIndex() <= USHRT_MAX,
               "SvxAccessibleTextIndex::SetIndex: index value overflow");
    nEnd = static_cast< USHORT > (aIndex.GetIndex());

    return sal_True;
}

sal_Bool SvxAccessibleTextAdapter::GetAttributeRun( USHORT& nStartIndex, USHORT& nEndIndex, USHORT nPara, USHORT nIndex ) const
{
    DBG_ASSERT(mrTextForwarder, "SvxAccessibleTextAdapter: no forwarder");

    SvxAccessibleTextIndex aIndex;
    aIndex.SetIndex(nPara, nIndex, *this);
    nIndex = aIndex.GetEEIndex();

    if( aIndex.InBullet() )
    {
        DBG_ASSERT(aIndex.GetBulletLen() >= 0 &&
                   aIndex.GetBulletLen() <= USHRT_MAX,
                   "SvxAccessibleTextIndex::SetIndex: index value overflow");

        // always treat bullet as distinct attribute
        nStartIndex = 0;
        nEndIndex = static_cast< USHORT > (aIndex.GetBulletLen());

        return sal_True;
    }

    if( aIndex.InField() )
    {
        DBG_ASSERT(aIndex.GetIndex() - aIndex.GetFieldOffset() >= 0 &&
                   aIndex.GetIndex() - aIndex.GetFieldOffset() <= USHRT_MAX,
                   "SvxAccessibleTextIndex::SetIndex: index value overflow");

        // always treat field as distinct attribute
        nStartIndex = static_cast< USHORT > (aIndex.GetIndex() - aIndex.GetFieldOffset());
        nEndIndex = static_cast< USHORT > (nStartIndex + aIndex.GetFieldLen());

        return sal_True;
    }

    if( !mrTextForwarder->GetAttributeRun( nStartIndex, nEndIndex, nPara, nIndex ) )
        return sal_False;

    aIndex.SetEEIndex( nPara, nStartIndex, *this );
    DBG_ASSERT(aIndex.GetIndex() >= 0 &&
               aIndex.GetIndex() <= USHRT_MAX,
               "SvxAccessibleTextIndex::SetIndex: index value overflow");
    nStartIndex = static_cast< USHORT > (aIndex.GetIndex());

    aIndex.SetEEIndex( nPara, nEndIndex, *this );
    DBG_ASSERT(aIndex.GetIndex() >= 0 &&
               aIndex.GetIndex() <= USHRT_MAX,
               "SvxAccessibleTextIndex::SetIndex: index value overflow");
    nEndIndex = static_cast< USHORT > (aIndex.GetIndex());

    return sal_True;
}

USHORT SvxAccessibleTextAdapter::GetLineCount( USHORT nPara ) const
{
    DBG_ASSERT(mrTextForwarder, "SvxAccessibleTextAdapter: no forwarder");

    return mrTextForwarder->GetLineCount( nPara );
}

USHORT SvxAccessibleTextAdapter::GetLineLen( USHORT nPara, USHORT nLine ) const
{
    DBG_ASSERT(mrTextForwarder, "SvxAccessibleTextAdapter: no forwarder");

    SvxAccessibleTextIndex aStartIndex;
    SvxAccessibleTextIndex aEndIndex;
    USHORT nCurrLine;
    USHORT nCurrIndex, nLastIndex;
    for( nCurrLine=0, nCurrIndex=0, nLastIndex=0; nCurrLine<=nLine; ++nCurrLine )
    {
        nLastIndex = nCurrIndex;
        nCurrIndex += mrTextForwarder->GetLineLen( nPara, nCurrLine );
    }

    aEndIndex.SetEEIndex( nPara, nCurrIndex, *this );
    if( nLine > 0 )
    {
        aStartIndex.SetEEIndex( nPara, nLastIndex, *this );

        return static_cast< USHORT >(aEndIndex.GetIndex() - aStartIndex.GetIndex());
    }
    else
        return static_cast< USHORT >(aEndIndex.GetIndex());
}

sal_Bool SvxAccessibleTextAdapter::Delete( const ESelection& rSel )
{
    DBG_ASSERT(mrTextForwarder, "SvxAccessibleTextAdapter: no forwarder");

    SvxAccessibleTextIndex aStartIndex;
    SvxAccessibleTextIndex aEndIndex;

    aStartIndex.SetIndex( rSel.nStartPara, rSel.nStartPos, *this );
    aEndIndex.SetIndex( rSel.nEndPara, rSel.nEndPos, *this );

    return mrTextForwarder->Delete( MakeEESelection(aStartIndex, aEndIndex ) );
}

sal_Bool SvxAccessibleTextAdapter::InsertText( const String& rStr, const ESelection& rSel )
{
    DBG_ASSERT(mrTextForwarder, "SvxAccessibleTextAdapter: no forwarder");

    SvxAccessibleTextIndex aStartIndex;
    SvxAccessibleTextIndex aEndIndex;

    aStartIndex.SetIndex( rSel.nStartPara, rSel.nStartPos, *this );
    aEndIndex.SetIndex( rSel.nEndPara, rSel.nEndPos, *this );

    return mrTextForwarder->InsertText( rStr, MakeEESelection(aStartIndex, aEndIndex) );
}

sal_Bool SvxAccessibleTextAdapter::QuickFormatDoc( BOOL bFull )
{
    DBG_ASSERT(mrTextForwarder, "SvxAccessibleTextAdapter: no forwarder");

    return mrTextForwarder->QuickFormatDoc( bFull );
}

USHORT SvxAccessibleTextAdapter::GetDepth( USHORT nPara ) const
{
    DBG_ASSERT(mrTextForwarder, "SvxAccessibleTextAdapter: no forwarder");

    return mrTextForwarder->GetDepth( nPara );
}

sal_Bool SvxAccessibleTextAdapter::SetDepth( USHORT nPara, USHORT nNewDepth )
{
    DBG_ASSERT(mrTextForwarder, "SvxAccessibleTextAdapter: no forwarder");

    return mrTextForwarder->SetDepth( nPara, nNewDepth );
}

void SvxAccessibleTextAdapter::SetForwarder( SvxTextForwarder& rForwarder )
{
    mrTextForwarder = &rForwarder;
}

sal_Bool SvxAccessibleTextAdapter::HaveTextBullet( USHORT nPara ) const
{
    DBG_ASSERT(mrTextForwarder, "SvxAccessibleTextAdapter: no forwarder");

    EBulletInfo aBulletInfo = GetBulletInfo( nPara );

    if( aBulletInfo.nParagraph != EE_PARA_NOT_FOUND &&
        aBulletInfo.bVisible &&
        aBulletInfo.nType != SVX_NUM_BITMAP )
    {
        return sal_True;
    }
    else
    {
        return sal_False;
    }
}

//---------------------------------------------------------------------------------------

SvxAccessibleTextEditViewAdapter::SvxAccessibleTextEditViewAdapter()
{
}

SvxAccessibleTextEditViewAdapter::~SvxAccessibleTextEditViewAdapter()
{
}

BOOL SvxAccessibleTextEditViewAdapter::IsValid() const
{
    DBG_ASSERT(mrViewForwarder, "SvxAccessibleTextEditViewAdapter: no forwarder");

    if( mrViewForwarder )
        return mrViewForwarder->IsValid();
    else
        return sal_False;
}

Rectangle SvxAccessibleTextEditViewAdapter::GetVisArea() const
{
    DBG_ASSERT(mrViewForwarder, "SvxAccessibleTextEditViewAdapter: no forwarder");

    return mrViewForwarder->GetVisArea();
}

Point SvxAccessibleTextEditViewAdapter::LogicToPixel( const Point& rPoint, const MapMode& rMapMode ) const
{
    DBG_ASSERT(mrViewForwarder, "SvxAccessibleTextEditViewAdapter: no forwarder");

    return mrViewForwarder->LogicToPixel(rPoint, rMapMode);
}

Point SvxAccessibleTextEditViewAdapter::PixelToLogic( const Point& rPoint, const MapMode& rMapMode ) const
{
    DBG_ASSERT(mrViewForwarder, "SvxAccessibleTextEditViewAdapter: no forwarder");

    return mrViewForwarder->PixelToLogic(rPoint, rMapMode);
}

sal_Bool SvxAccessibleTextEditViewAdapter::GetSelection( ESelection& rSel ) const
{
    DBG_ASSERT(mrViewForwarder, "SvxAccessibleTextEditViewAdapter: no forwarder");

    ESelection aSelection;

    if( !mrViewForwarder->GetSelection( aSelection ) )
        return sal_False;

    SvxAccessibleTextIndex aStartIndex;
    SvxAccessibleTextIndex aEndIndex;

    aStartIndex.SetEEIndex( aSelection.nStartPara, aSelection.nStartPos, *mrTextForwarder );
    aEndIndex.SetEEIndex( aSelection.nEndPara, aSelection.nEndPos, *mrTextForwarder );

    DBG_ASSERT(aStartIndex.GetIndex() >= 0 && aStartIndex.GetIndex() <= USHRT_MAX &&
               aEndIndex.GetIndex() >= 0 && aEndIndex.GetIndex() <= USHRT_MAX,
               "SvxAccessibleTextEditViewAdapter::GetSelection: index value overflow");

    rSel = ESelection( aStartIndex.GetParagraph(), static_cast< USHORT > (aStartIndex.GetIndex()),
                       aEndIndex.GetParagraph(), static_cast< USHORT > (aEndIndex.GetIndex()) );

    return sal_True;
}

sal_Bool SvxAccessibleTextEditViewAdapter::SetSelection( const ESelection& rSel )
{
    DBG_ASSERT(mrViewForwarder, "SvxAccessibleTextEditViewAdapter: no forwarder");

    SvxAccessibleTextIndex aStartIndex;
    SvxAccessibleTextIndex aEndIndex;

    aStartIndex.SetIndex( rSel.nStartPara, rSel.nStartPos, *mrTextForwarder );
    aEndIndex.SetIndex( rSel.nEndPara, rSel.nEndPos, *mrTextForwarder );

    return mrViewForwarder->SetSelection( MakeEESelection(aStartIndex, aEndIndex) );
}

sal_Bool SvxAccessibleTextEditViewAdapter::Copy()
{
    DBG_ASSERT(mrViewForwarder, "SvxAccessibleTextEditViewAdapter: no forwarder");

    return mrViewForwarder->Copy();
}

sal_Bool SvxAccessibleTextEditViewAdapter::Cut()
{
    DBG_ASSERT(mrViewForwarder, "SvxAccessibleTextEditViewAdapter: no forwarder");

    return mrViewForwarder->Cut();
}

sal_Bool SvxAccessibleTextEditViewAdapter::Paste()
{
    DBG_ASSERT(mrViewForwarder, "SvxAccessibleTextEditViewAdapter: no forwarder");

    return mrViewForwarder->Paste();
}

void SvxAccessibleTextEditViewAdapter::SetForwarder( SvxEditViewForwarder&      rForwarder,
                                                     SvxAccessibleTextAdapter&  rTextForwarder )
{
    mrViewForwarder = &rForwarder;
    mrTextForwarder = &rTextForwarder;
}
}

/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
