libreoffice/sw/source/core/access/accnotextframe.cxx

 /*************************************************************************
 *
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * Copyright 2008 by Sun Microsystems, Inc.
 *
 * OpenOffice.org - a multi-platform office productivity suite
 *
 * $RCSfile: accnotextframe.cxx,v $
 * $Revision: 1.13 $
 *
 * This file is part of OpenOffice.org.
 *
 * OpenOffice.org is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License version 3
 * only, as published by the Free Software Foundation.
 *
 * OpenOffice.org 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 version 3 for more details
 * (a copy is included in the LICENSE file that accompanied this code).
 *
 * You should have received a copy of the GNU Lesser General Public License
 * version 3 along with OpenOffice.org.  If not, see
 * <http://www.openoffice.org/license.html>
 * for a copy of the LGPLv3 License.
 *
 ************************************************************************/

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


#include <vos/mutex.hxx>
#include <vcl/svapp.hxx>
#include <com/sun/star/accessibility/AccessibleRole.hpp>
#include <com/sun/star/accessibility/AccessibleStateType.hpp>
#include <com/sun/star/accessibility/AccessibleEventId.hpp>
#include <unotools/accessiblestatesethelper.hxx>
#include <frmfmt.hxx>
#include <ndnotxt.hxx>
#include <flyfrm.hxx>
#include <cntfrm.hxx>
#include "accnotextframe.hxx"

using namespace ::com::sun::star;
using namespace ::com::sun::star::accessibility;
using ::rtl::OUString;

const SwNoTxtNode *SwAccessibleNoTextFrame::GetNoTxtNode() const
{
    const SwNoTxtNode *pNd  = 0;
    const SwFlyFrm *pFlyFrm = static_cast< const SwFlyFrm *>( GetFrm() );
    if( pFlyFrm->Lower() && pFlyFrm->Lower()->IsNoTxtFrm() )
    {
        const SwCntntFrm *pCntFrm =
            static_cast<const SwCntntFrm *>( pFlyFrm->Lower() );
        pNd = pCntFrm->GetNode()->GetNoTxtNode();
    }

    return pNd;
}

SwAccessibleNoTextFrame::SwAccessibleNoTextFrame(
        SwAccessibleMap* pInitMap,
        sal_Int16 nInitRole,
        const SwFlyFrm* pFlyFrm  ) :
    SwAccessibleFrameBase( pInitMap, nInitRole, pFlyFrm ),
    aDepend( this, const_cast < SwNoTxtNode * >( GetNoTxtNode() ) )
{
    const SwNoTxtNode *pNd = GetNoTxtNode();
    if( pNd )
        sDesc = OUString( pNd->GetAlternateText() );
    if( !sDesc.getLength() )
        sDesc = GetName();
}

SwAccessibleNoTextFrame::~SwAccessibleNoTextFrame()
{
}

void SwAccessibleNoTextFrame::Modify( SfxPoolItem *pOld, SfxPoolItem *pNew)
{
    SwAccessibleFrameBase::Modify( pOld, pNew );

    sal_uInt16 nWhich = pOld ? pOld->Which() : pNew ? pNew->Which() : 0 ;
    const SwNoTxtNode *pNd = GetNoTxtNode();
    ASSERT( pNd == aDepend.GetRegisteredIn(), "invalid frame" );
    switch( nWhich )
    {
    case RES_NAME_CHANGED:
        if( pNd->GetAlternateText().Len() )
            break;
    case RES_ALT_TEXT_CHANGED:
        if( pNd && GetFrm() )
        {
            OUString sOldDesc( sDesc );

            const String& rDesc = pNd->GetAlternateText();
            sDesc = rDesc;
            if( !sDesc.getLength() )
                sDesc = GetName();

            if( sDesc != sOldDesc )
            {
                AccessibleEventObject aEvent;
                aEvent.EventId = AccessibleEventId::DESCRIPTION_CHANGED;
                aEvent.OldValue <<= sOldDesc;
                aEvent.NewValue <<= sDesc;
                FireAccessibleEvent( aEvent );
            }
        }
        break;
        /*
    case RES_OBJECTDYING:
        if( aDepend.GetRegisteredIn() ==
                static_cast< SwModify *>( static_cast< SwPtrMsgPoolItem * >( pOld )->pObject ) )
            const_cast < SwModify *>( aDepend.GetRegisteredIn()->Remove( aDepend );
        break;

    case RES_FMT_CHG:
        if( static_cast< SwFmtChg * >(pNew)->pChangedFmt == GetRegisteredIn() &&
            static_cast< SwFmtChg * >(pOld)->pChangedFmt->IsFmtInDTOR() )
            pRegisteredIn->Remove( this );
        break;
    */
    }
}

void SwAccessibleNoTextFrame::Dispose( sal_Bool bRecursive )
{
    vos::OGuard aGuard(Application::GetSolarMutex());

    if( aDepend.GetRegisteredIn() )
        const_cast < SwModify *>( aDepend.GetRegisteredIn() )->Remove( &aDepend );

    SwAccessibleFrameBase::Dispose( bRecursive );
}

OUString SAL_CALL SwAccessibleNoTextFrame::getAccessibleDescription (void)
        throw (uno::RuntimeException)
{
    vos::OGuard aGuard(Application::GetSolarMutex());

    CHECK_FOR_DEFUNC( XAccessibleContext )

    return sDesc;
}



//
// XInterface
//

uno::Any SAL_CALL SwAccessibleNoTextFrame::queryInterface( const uno::Type& aType )
    throw (uno::RuntimeException)
{
    if( aType ==
        ::getCppuType( static_cast<uno::Reference<XAccessibleImage>*>( NULL ) ) )
    {
        uno::Reference<XAccessibleImage> xImage = this;
        uno::Any aAny;
        aAny <<= xImage;
        return aAny;
    }
    else
        return SwAccessibleContext::queryInterface( aType );
}


//====== XTypeProvider ====================================================
uno::Sequence< uno::Type > SAL_CALL SwAccessibleNoTextFrame::getTypes() throw(uno::RuntimeException)
{
    uno::Sequence< uno::Type > aTypes( SwAccessibleFrameBase::getTypes() );

    sal_Int32 nIndex = aTypes.getLength();
    aTypes.realloc( nIndex + 1 );

    uno::Type* pTypes = aTypes.getArray();
    pTypes[nIndex] = ::getCppuType( static_cast< uno::Reference< XAccessibleImage > * >( 0 ) );

    return aTypes;
}


//
// XAccessibleImage
//

// implementation of the XAccessibleImage methods is a no-brainer, as
// all releveant information is already accessible through other
// methods. So we just delegate to those.

OUString SAL_CALL SwAccessibleNoTextFrame::getAccessibleImageDescription()
    throw ( uno::RuntimeException )
{
    return getAccessibleDescription();
}

sal_Int32 SAL_CALL SwAccessibleNoTextFrame::getAccessibleImageHeight(  )
    throw ( uno::RuntimeException )
{
    return getSize().Height;
}

sal_Int32 SAL_CALL SwAccessibleNoTextFrame::getAccessibleImageWidth(  )
    throw ( uno::RuntimeException )
{
    return getSize().Width;
}