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

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 * Copyright 2008 by Sun Microsystems, Inc.
 *
 * OpenOffice.org - a multi-platform office productivity suite
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 * $RCSfile: acctextframe.cxx,v $
 * $Revision: 1.16 $
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_sw.hxx"

#include <com/sun/star/accessibility/XAccessibleContext.hpp>
#include <rtl/uuid.h>
#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/AccessibleRelation.hpp>
#include <com/sun/star/accessibility/AccessibleRelationType.hpp>
#include <com/sun/star/accessibility/XAccessibleRelationSet.hpp>
#include <com/sun/star/accessibility/AccessibleEventId.hpp>
#include <unotools/accessiblestatesethelper.hxx>
#include <frmfmt.hxx>
#include <flyfrm.hxx>
#include <accmap.hxx>
#include <unotools/accessiblerelationsethelper.hxx>
#include "acctextframe.hxx"

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

using utl::AccessibleRelationSetHelper;
using ::com::sun::star::accessibility::XAccessibleContext;

const sal_Char sServiceName[] = "com.sun.star.text.AccessibleTextFrameView";
const sal_Char sImplementationName[] = "com.sun.star.comp.Writer.SwAccessibleTextFrameView";

SwAccessibleTextFrame::SwAccessibleTextFrame(
        SwAccessibleMap* pInitMap,
        const SwFlyFrm* pFlyFrm  ) :
    SwAccessibleFrameBase( pInitMap, AccessibleRole::TEXT_FRAME, pFlyFrm )
{
}

SwAccessibleTextFrame::~SwAccessibleTextFrame()
{
}

void SwAccessibleTextFrame::Modify( SfxPoolItem *pOld, SfxPoolItem *pNew)
{
    sal_uInt16 nWhich = pOld ? pOld->Which() : pNew ? pNew->Which() : 0 ;
    const SwFlyFrm *pFlyFrm = static_cast< const SwFlyFrm * >( GetFrm() );
    switch( nWhich )
    {
    case RES_NAME_CHANGED:
        if( pFlyFrm )
        {
            OUString sOldDesc( GetName() );
            SwAccessibleFrameBase::Modify( pOld, pNew );

            if( sOldDesc != GetName() )
            {
                AccessibleEventObject aEvent;
                aEvent.EventId = AccessibleEventId::DESCRIPTION_CHANGED;
                aEvent.OldValue <<= sOldDesc;
                aEvent.NewValue <<= GetName();
                FireAccessibleEvent( aEvent );
            }
        }
        break;
    default:
        SwAccessibleFrameBase::Modify( pOld, pNew );
        break;
    }
}

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

    CHECK_FOR_DEFUNC( XAccessibleContext )

    return GetName();

}

OUString SAL_CALL SwAccessibleTextFrame::getImplementationName()
        throw( uno::RuntimeException )
{
    return OUString(RTL_CONSTASCII_USTRINGPARAM(sImplementationName));
}

sal_Bool SAL_CALL SwAccessibleTextFrame::supportsService(
        const OUString& sTestServiceName)
    throw (uno::RuntimeException)
{
    return sTestServiceName.equalsAsciiL( sServiceName,
                                          sizeof(sServiceName)-1 ) ||
           sTestServiceName.equalsAsciiL( sAccessibleServiceName,
                                             sizeof(sAccessibleServiceName)-1 );
}

uno::Sequence< OUString > SAL_CALL SwAccessibleTextFrame::getSupportedServiceNames()
        throw( uno::RuntimeException )
{
    uno::Sequence< OUString > aRet(2);
    OUString* pArray = aRet.getArray();
    pArray[0] = OUString( RTL_CONSTASCII_USTRINGPARAM(sServiceName) );
    pArray[1] = OUString( RTL_CONSTASCII_USTRINGPARAM(sAccessibleServiceName) );
    return aRet;
}

uno::Sequence< sal_Int8 > SAL_CALL SwAccessibleTextFrame::getImplementationId()
        throw(uno::RuntimeException)
{
    vos::OGuard aGuard(Application::GetSolarMutex());
    static uno::Sequence< sal_Int8 > aId( 16 );
    static sal_Bool bInit = sal_False;
    if(!bInit)
    {
        rtl_createUuid( (sal_uInt8 *)(aId.getArray() ), 0, sal_True );
        bInit = sal_True;
    }
    return aId;
}


//
// XAccessibleRelationSet
//


SwFlyFrm* SwAccessibleTextFrame::getFlyFrm() const
{
    SwFlyFrm* pFlyFrm = NULL;

    const SwFrm* pFrm = GetFrm();
    DBG_ASSERT( pFrm != NULL, "frame expected" );
    if( pFrm->IsFlyFrm() )
    {
        pFlyFrm = static_cast<SwFlyFrm*>( const_cast<SwFrm*>( pFrm ) );
    }

    return pFlyFrm;
}

AccessibleRelation SwAccessibleTextFrame::makeRelation( sal_Int16 nType, const SwFlyFrm* pFrm )
{
    uno::Sequence<uno::Reference<XInterface> > aSequence(1);
    aSequence[0] = GetMap()->GetContext( pFrm );
    return AccessibleRelation( nType, aSequence );
}


uno::Reference<XAccessibleRelationSet> SAL_CALL SwAccessibleTextFrame::getAccessibleRelationSet( )
    throw ( uno::RuntimeException )
{
    vos::OGuard aGuard(Application::GetSolarMutex());
    CHECK_FOR_DEFUNC( XAccessibleContext );

    // get the frame, and insert prev/next relations into helper

    AccessibleRelationSetHelper* pHelper = new AccessibleRelationSetHelper();

    SwFlyFrm* pFlyFrm = getFlyFrm();
    DBG_ASSERT( pFlyFrm != NULL, "fly frame expected" );

    const SwFlyFrm* pPrevFrm = pFlyFrm->GetPrevLink();
    if( pPrevFrm != NULL )
        pHelper->AddRelation( makeRelation(
            AccessibleRelationType::CONTENT_FLOWS_FROM, pPrevFrm ) );

    const SwFlyFrm* pNextFrm = pFlyFrm->GetNextLink();
    if( pNextFrm != NULL )
        pHelper->AddRelation( makeRelation(
            AccessibleRelationType::CONTENT_FLOWS_TO, pNextFrm ) );

    return pHelper;
}