AccessibleGridControlBase.cxx

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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#include <extended/AccessibleGridControlBase.hxx>
#include <toolkit/helper/convert.hxx>
#include <utility>
#include <vcl/accessibletable.hxx>
#include <vcl/svapp.hxx>
#include <vcl/window.hxx>
#include <cppuhelper/supportsservice.hxx>
#include <sal/types.h>
 
#include <com/sun/star/accessibility/AccessibleRole.hpp>
#include <com/sun/star/accessibility/AccessibleStateType.hpp>
#include <com/sun/star/accessibility/IllegalAccessibleComponentStateException.hpp>
#include <unotools/accessiblerelationsethelper.hxx>
#include <sal/log.hxx>
 
using ::com::sun::star::uno::Sequence;
using ::com::sun::star::uno::Any;
 
using namespace ::com::sun::star;
using namespace ::com::sun::star::accessibility;
using namespace ::comphelper;
using namespace ::vcl;
using namespace ::vcl::table;
 
 
namespace accessibility {
 
using namespace com::sun::star::accessibility::AccessibleStateType;
 
 
AccessibleGridControlBase::AccessibleGridControlBase(
        css::uno::Reference< css::accessibility::XAccessible > xParent,
        ::vcl::table::IAccessibleTable& rTable,
        ::vcl::table::AccessibleTableControlObjType      eObjType ) :
    AccessibleGridControlImplHelper( m_aMutex ),
    m_xParent(std::move( xParent )),
    m_aTable( rTable),
    m_eObjType( eObjType ),
    m_aClientId(0)
{
}
 
AccessibleGridControlBase::~AccessibleGridControlBase()
{
    if( isAlive() )
    {
        // increment ref count to prevent double call of Dtor
        osl_atomic_increment( &m_refCount );
        dispose();
    }
}
 
void SAL_CALL AccessibleGridControlBase::disposing()
{
    SolarMutexGuard g;
 
    if ( getClientId( ) )
    {
        AccessibleEventNotifier::TClientId nId( getClientId( ) );
        setClientId( 0 );
        AccessibleEventNotifier::revokeClientNotifyDisposing( nId, *this );
    }
 
    m_xParent = nullptr;
    //m_aTable = NULL;
}
 
// css::accessibility::XAccessibleContext
 
css::uno::Reference< css::accessibility::XAccessible > SAL_CALL AccessibleGridControlBase::getAccessibleParent()
{
    SolarMutexGuard g;
 
    ensureIsAlive();
    return m_xParent;
}
 
sal_Int64 SAL_CALL AccessibleGridControlBase::getAccessibleIndexInParent()
{
    SolarMutexGuard g;
 
    ensureIsAlive();
 
    // -1 for child not found/no parent (according to specification)
    sal_Int64 nRet = -1;
 
    css::uno::Reference< uno::XInterface > xMeMyselfAndI( static_cast< css::accessibility::XAccessibleContext* >( this ), uno::UNO_QUERY );
 
    //  iterate over parent's children and search for this object
    if( m_xParent.is() )
    {
        css::uno::Reference< css::accessibility::XAccessibleContext >
            xParentContext( m_xParent->getAccessibleContext() );
        if( xParentContext.is() )
        {
            css::uno::Reference< uno::XInterface > xChild;
 
            sal_Int64 nChildCount = xParentContext->getAccessibleChildCount();
            for( sal_Int64 nChild = 0; nChild < nChildCount; ++nChild )
            {
                xChild.set(xParentContext->getAccessibleChild( nChild ), css::uno::UNO_QUERY);
                if ( xMeMyselfAndI.get() == xChild.get() )
                {
                    nRet = nChild;
                    break;
                }
            }
        }
    }
    return nRet;
}
 
OUString SAL_CALL AccessibleGridControlBase::getAccessibleDescription()
{
    SolarMutexGuard g;
 
    ensureIsAlive();
    return m_aTable.GetAccessibleObjectDescription(m_eObjType);
}
 
OUString SAL_CALL AccessibleGridControlBase::getAccessibleName()
{
    SolarMutexGuard g;
 
    ensureIsAlive();
    return m_aTable.GetAccessibleObjectName(m_eObjType, 0, 0);
}
 
css::uno::Reference< css::accessibility::XAccessibleRelationSet > SAL_CALL
AccessibleGridControlBase::getAccessibleRelationSet()
{
   SolarMutexGuard g;
 
   ensureIsAlive();
   // GridControl does not have relations.
   return new utl::AccessibleRelationSetHelper;
}
 
sal_Int64 SAL_CALL
AccessibleGridControlBase::getAccessibleStateSet()
{
    SolarMutexGuard aSolarGuard;
 
    // don't check whether alive -> StateSet may contain DEFUNC
    return implCreateStateSet();
}
 
lang::Locale SAL_CALL AccessibleGridControlBase::getLocale()
{
    SolarMutexGuard g;
 
    ensureIsAlive();
    if( m_xParent.is() )
    {
        css::uno::Reference< css::accessibility::XAccessibleContext >
            xParentContext( m_xParent->getAccessibleContext() );
        if( xParentContext.is() )
            return xParentContext->getLocale();
    }
    throw IllegalAccessibleComponentStateException();
}
 
// css::accessibility::XAccessibleComponent
 
sal_Bool SAL_CALL AccessibleGridControlBase::containsPoint( const awt::Point& rPoint )
{
   return tools::Rectangle( Point(), getBoundingBox().GetSize() ).Contains( VCLPoint( rPoint ) );
}
 
awt::Rectangle SAL_CALL AccessibleGridControlBase::getBounds()
{
   return AWTRectangle( getBoundingBox() );
}
 
awt::Point SAL_CALL AccessibleGridControlBase::getLocation()
{
    return AWTPoint( getBoundingBox().TopLeft() );
}
 
awt::Point SAL_CALL AccessibleGridControlBase::getLocationOnScreen()
{
    return AWTPoint( getBoundingBoxOnScreen().TopLeft() );
}
 
awt::Size SAL_CALL AccessibleGridControlBase::getSize()
{
    return AWTSize( getBoundingBox().GetSize() );
}
 
// css::accessibility::XAccessibleEventBroadcaster
 
void SAL_CALL AccessibleGridControlBase::addAccessibleEventListener(
        const css::uno::Reference< css::accessibility::XAccessibleEventListener>& _rxListener )
{
    if ( _rxListener.is() )
    {
        SolarMutexGuard g;
 
        if ( !getClientId( ) )
            setClientId( AccessibleEventNotifier::registerClient( ) );
 
        AccessibleEventNotifier::addEventListener( getClientId( ), _rxListener );
    }
}
 
void SAL_CALL AccessibleGridControlBase::removeAccessibleEventListener(
        const css::uno::Reference< css::accessibility::XAccessibleEventListener>& _rxListener )
{
    if( !(_rxListener.is() && getClientId( )) )
        return;
 
    SolarMutexGuard g;
 
    sal_Int32 nListenerCount = AccessibleEventNotifier::removeEventListener( getClientId( ), _rxListener );
    if ( !nListenerCount )
    {
        // no listeners anymore
        // -> revoke ourself. This may lead to the notifier thread dying (if we were the last client),
        // and at least to us not firing any events anymore, in case somebody calls
        // NotifyAccessibleEvent, again
        AccessibleEventNotifier::TClientId nId( getClientId( ) );
        setClientId( 0 );
        AccessibleEventNotifier::revokeClient( nId );
    }
}
 
// XTypeProvider
 
Sequence< sal_Int8 > SAL_CALL AccessibleGridControlBase::getImplementationId()
{
    return css::uno::Sequence<sal_Int8>();
}
 
// XServiceInfo
 
sal_Bool SAL_CALL AccessibleGridControlBase::supportsService(
        const OUString& rServiceName )
{
    return cppu::supportsService(this, rServiceName);
}
 
Sequence< OUString > SAL_CALL AccessibleGridControlBase::getSupportedServiceNames()
{
    return { "com.sun.star.accessibility.AccessibleContext" };
}
// internal virtual methods
 
bool AccessibleGridControlBase::implIsShowing()
{
    bool bShowing = false;
    if( m_xParent.is() )
    {
        css::uno::Reference< css::accessibility::XAccessibleComponent >
            xParentComp( m_xParent->getAccessibleContext(), uno::UNO_QUERY );
        if( xParentComp.is() )
            bShowing = implGetBoundingBox().Overlaps(
                VCLRectangle( xParentComp->getBounds() ) );
    }
    return bShowing;
}
 
sal_Int64 AccessibleGridControlBase::implCreateStateSet()
{
    sal_Int64 nStateSet = 0;
 
    if( isAlive() )
    {
        // SHOWING done with m_xParent
        if( implIsShowing() )
            nStateSet |= AccessibleStateType::SHOWING;
        // GridControl fills StateSet with states depending on object type
        m_aTable.FillAccessibleStateSet( nStateSet, getType() );
    }
    else
        nStateSet |= AccessibleStateType::DEFUNC;
    return nStateSet;
}
 
// internal helper methods
 
bool AccessibleGridControlBase::isAlive() const
{
    ::osl::MutexGuard g(m_aMutex); // guards rBHelper members
    return !rBHelper.bDisposed && !rBHelper.bInDispose;
}
 
void AccessibleGridControlBase::ensureIsAlive() const
{
    if( !isAlive() )
        throw lang::DisposedException();
}
 
tools::Rectangle AccessibleGridControlBase::getBoundingBox()
{
    SolarMutexGuard aSolarGuard;
    ensureIsAlive();
    tools::Rectangle aRect = implGetBoundingBox();
    if ( aRect.Left() == 0 && aRect.Top() == 0 && aRect.Right() == 0 && aRect.Bottom() == 0 )
    {
        SAL_WARN( "accessibility", "rectangle doesn't exist" );
    }
    return aRect;
}
 
tools::Rectangle AccessibleGridControlBase::getBoundingBoxOnScreen()
{
    SolarMutexGuard aSolarGuard;
    ensureIsAlive();
    tools::Rectangle aRect = implGetBoundingBoxOnScreen();
    if ( aRect.Left() == 0 && aRect.Top() == 0 && aRect.Right() == 0 && aRect.Bottom() == 0 )
    {
        SAL_WARN( "accessibility", "rectangle doesn't exist" );
    }
    return aRect;
}
 
void AccessibleGridControlBase::commitEvent(
        sal_Int16 _nEventId, const Any& _rNewValue, const Any& _rOldValue )
{
    SolarMutexGuard g;
 
    if ( !getClientId( ) )
            // if we don't have a client id for the notifier, then we don't have listeners, then
            // we don't need to notify anything
            return;
 
    // build an event object
    AccessibleEventObject aEvent(*this, _nEventId, _rNewValue, _rOldValue, -1);
 
    // let the notifier handle this event
 
    AccessibleEventNotifier::addEvent( getClientId( ), aEvent );
}
 
sal_Int16 SAL_CALL AccessibleGridControlBase::getAccessibleRole()
{
    ensureIsAlive();
    sal_Int16 nRole = AccessibleRole::UNKNOWN;
    switch ( m_eObjType )
    {
        case TCTYPE_ROWHEADERCELL:
        nRole = AccessibleRole::ROW_HEADER;
        break;
    case TCTYPE_COLUMNHEADERCELL:
        nRole = AccessibleRole::COLUMN_HEADER;
        break;
    case TCTYPE_COLUMNHEADERBAR:
    case TCTYPE_ROWHEADERBAR:
    case TCTYPE_TABLE:
        nRole = AccessibleRole::TABLE;
        break;
    case TCTYPE_TABLECELL:
        nRole = AccessibleRole::TABLE_CELL;
        break;
    case TCTYPE_GRIDCONTROL:
        nRole = AccessibleRole::PANEL;
        break;
    }
    return nRole;
}
 
css::uno::Reference<css::accessibility::XAccessible > SAL_CALL AccessibleGridControlBase::getAccessibleAtPoint( const css::awt::Point& )
{
    return nullptr;
}
 
sal_Int32 SAL_CALL AccessibleGridControlBase::getForeground(  )
{
    SolarMutexGuard aSolarGuard;
 
    ensureIsAlive();
 
    Color nColor;
    vcl::Window* pInst = m_aTable.GetWindowInstance();
    if ( pInst )
    {
        if ( pInst->IsControlForeground() )
            nColor = pInst->GetControlForeground();
        else
        {
            vcl::Font aFont;
            if ( pInst->IsControlFont() )
                aFont = pInst->GetControlFont();
            else
                aFont = pInst->GetFont();
            nColor = aFont.GetColor();
        }
    }
    return sal_Int32(nColor);
}
 
sal_Int32 SAL_CALL AccessibleGridControlBase::getBackground(  )
{
    SolarMutexGuard aSolarGuard;
 
    ensureIsAlive();
    Color nColor;
    vcl::Window* pInst = m_aTable.GetWindowInstance();
    if ( pInst )
    {
        if ( pInst->IsControlBackground() )
            nColor = pInst->GetControlBackground();
        else
            nColor = pInst->GetBackground().GetColor();
    }
    return sal_Int32(nColor);
}
 
 
GridControlAccessibleElement::GridControlAccessibleElement( const css::uno::Reference< css::accessibility::XAccessible >& rxParent,
                        ::vcl::table::IAccessibleTable& rTable,
                        ::vcl::table::AccessibleTableControlObjType  eObjType )
    :AccessibleGridControlBase( rxParent, rTable, eObjType )
{
}
 
// XInterface
IMPLEMENT_FORWARD_XINTERFACE2( GridControlAccessibleElement, AccessibleGridControlBase, GridControlAccessibleElement_Base)
 
// XTypeProvider
IMPLEMENT_FORWARD_XTYPEPROVIDER2( GridControlAccessibleElement, AccessibleGridControlBase, GridControlAccessibleElement_Base )
 
// css::accessibility::XAccessible
 
css::uno::Reference< css::accessibility::XAccessibleContext > SAL_CALL GridControlAccessibleElement::getAccessibleContext()
{
    SolarMutexGuard g;
 
    ensureIsAlive();
    return this;
}
 
GridControlAccessibleElement::~GridControlAccessibleElement( )
{
}
 
 
} // namespace accessibility
 
 
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