main/sw/source/core/access/acccell.cxx

/**************************************************************
 * 
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 * 
 *************************************************************/

 

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


#include <vos/mutex.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 <rtl/uuid.h>
#include <vcl/svapp.hxx>
#include <cellfrm.hxx>
#include <tabfrm.hxx>
#include <swtable.hxx>
#include "crsrsh.hxx"
#include "viscrs.hxx"
#include <accfrmobj.hxx>
#include <accfrmobjslist.hxx>
#include "frmfmt.hxx"
#include "cellatr.hxx"
#include "accmap.hxx"
#include <acccell.hxx>

#ifndef _STLP_CFLOAT
#include <cfloat>
#endif

#include <limits.h>

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

const sal_Char sServiceName[] = "com.sun.star.table.AccessibleCellView";
const sal_Char sImplementationName[] = "com.sun.star.comp.Writer.SwAccessibleCellView";

sal_Bool SwAccessibleCell::IsSelected()
{
	sal_Bool bRet = sal_False;

    DBG_ASSERT( GetMap(), "no map?" );
	const ViewShell *pVSh = GetMap()->GetShell();
    DBG_ASSERT( pVSh, "no shell?" );
	if( pVSh->ISA( SwCrsrShell ) )
	{
		const SwCrsrShell *pCSh = static_cast< const SwCrsrShell * >( pVSh );
		if( pCSh->IsTableMode() )
		{
			const SwCellFrm *pCFrm =
				static_cast< const SwCellFrm * >( GetFrm() );
			SwTableBox *pBox =
				const_cast< SwTableBox *>( pCFrm->GetTabBox() ); //SVPtrArr!
			bRet = pCSh->GetTableCrsr()->GetBoxes().Seek_Entry( pBox );
		}
	}

	return bRet;
}

void SwAccessibleCell::GetStates( ::utl::AccessibleStateSetHelper& rStateSet )
{
	SwAccessibleContext::GetStates( rStateSet );

	// SELECTABLE
	const ViewShell *pVSh = GetMap()->GetShell();
    DBG_ASSERT( pVSh, "no shell?" );
	if( pVSh->ISA( SwCrsrShell ) )
		rStateSet.AddState( AccessibleStateType::SELECTABLE );

	// SELECTED
	if( IsSelected() )
	{
		rStateSet.AddState( AccessibleStateType::SELECTED );
		ASSERT( bIsSelected, "bSelected out of sync" );
		::vos::ORef < SwAccessibleContext > xThis( this );
		GetMap()->SetCursorContext( xThis );
	}
}

SwAccessibleCell::SwAccessibleCell( SwAccessibleMap *pInitMap,
                                    const SwCellFrm *pCellFrm )
    : SwAccessibleContext( pInitMap, AccessibleRole::TABLE_CELL, pCellFrm )
    , bIsSelected( sal_False )
{
	vos::OGuard aGuard(Application::GetSolarMutex());
    OUString sBoxName( pCellFrm->GetTabBox()->GetName() );
    SetName( sBoxName );

	bIsSelected = IsSelected();
}

sal_Bool SwAccessibleCell::_InvalidateMyCursorPos()
{
	sal_Bool bNew = IsSelected();
	sal_Bool bOld;
	{
		vos::OGuard aGuard( aMutex );
		bOld = bIsSelected;
		bIsSelected = bNew;
	}
	if( bNew )
	{
		// remember that object as the one that has the caret. This is
		// neccessary to notify that object if the cursor leaves it.
		::vos::ORef < SwAccessibleContext > xThis( this );
		GetMap()->SetCursorContext( xThis );
	}

	sal_Bool bChanged = bOld != bNew;
	if( bChanged )
		FireStateChangedEvent( AccessibleStateType::SELECTED, bNew );

	return bChanged;
}

sal_Bool SwAccessibleCell::_InvalidateChildrenCursorPos( const SwFrm *pFrm )
{
	sal_Bool bChanged = sal_False;

    const SwAccessibleChildSList aVisList( GetVisArea(), *pFrm, *GetMap() );
    SwAccessibleChildSList::const_iterator aIter( aVisList.begin() );
	while( aIter != aVisList.end() )
	{
        const SwAccessibleChild& rLower = *aIter;
		const SwFrm *pLower = rLower.GetSwFrm();
		if( pLower )
		{
			if( rLower.IsAccessible( GetMap()->GetShell()->IsPreView() )  )
			{
				::vos::ORef< SwAccessibleContext > xAccImpl(
					GetMap()->GetContextImpl( pLower, sal_False ) );
				if( xAccImpl.isValid() )
				{
					ASSERT( xAccImpl->GetFrm()->IsCellFrm(),
						 	"table child is not a cell frame" )
					bChanged |= static_cast< SwAccessibleCell *>(
							xAccImpl.getBodyPtr() )->_InvalidateMyCursorPos();
				}
				else
					bChanged = sal_True; // If the context is not know we
										 // don't know whether the selection
										 // changed or not.
			}
			else
			{
				// This is a box with sub rows.
				bChanged |= _InvalidateChildrenCursorPos( pLower );
			}
		}
		++aIter;
	}

	return bChanged;
}

void SwAccessibleCell::_InvalidateCursorPos()
{

    const SwFrm *pParent = GetParent( SwAccessibleChild(GetFrm()), IsInPagePreview() );
	ASSERT( pParent->IsTabFrm(), "parent is not a tab frame" );
	const SwTabFrm *pTabFrm = static_cast< const SwTabFrm * >( pParent );
	if( pTabFrm->IsFollow() )
		pTabFrm = pTabFrm->FindMaster();

	while( pTabFrm )
	{
		sal_Bool bChanged = _InvalidateChildrenCursorPos( pTabFrm );
		if( bChanged )
		{
			::vos::ORef< SwAccessibleContext > xAccImpl(
				GetMap()->GetContextImpl( pTabFrm, sal_False ) );
			if( xAccImpl.isValid() )
			{
				AccessibleEventObject aEvent;
				aEvent.EventId = AccessibleEventId::SELECTION_CHANGED;
				xAccImpl->FireAccessibleEvent( aEvent );
			}
		}

		pTabFrm = pTabFrm->GetFollow();
	}
}

sal_Bool SwAccessibleCell::HasCursor()
{
	vos::OGuard aGuard( aMutex );
	return bIsSelected;
}

SwAccessibleCell::~SwAccessibleCell()
{
}

OUString SAL_CALL SwAccessibleCell::getAccessibleDescription (void)
        throw (uno::RuntimeException)
{
	return GetName();
}

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

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

uno::Sequence< OUString > SAL_CALL SwAccessibleCell::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;
}

void SwAccessibleCell::Dispose( sal_Bool bRecursive )
{
    const SwFrm *pParent = GetParent( SwAccessibleChild(GetFrm()), IsInPagePreview() );
	::vos::ORef< SwAccessibleContext > xAccImpl(
			GetMap()->GetContextImpl( pParent, sal_False ) );
	if( xAccImpl.isValid() )
        xAccImpl->DisposeChild( SwAccessibleChild(GetFrm()), bRecursive );
	SwAccessibleContext::Dispose( bRecursive );
}

void SwAccessibleCell::InvalidatePosOrSize( const SwRect& rOldBox )
{
    const SwFrm *pParent = GetParent( SwAccessibleChild(GetFrm()), IsInPagePreview() );
	::vos::ORef< SwAccessibleContext > xAccImpl(
			GetMap()->GetContextImpl( pParent, sal_False ) );
	if( xAccImpl.isValid() )
        xAccImpl->InvalidateChildPosOrSize( SwAccessibleChild(GetFrm()), rOldBox );
	SwAccessibleContext::InvalidatePosOrSize( rOldBox );
}


// =====  XAccessibleInterface  ===========================================

uno::Any SwAccessibleCell::queryInterface( const uno::Type& rType )
    throw( uno::RuntimeException )
{
    if ( rType == ::getCppuType( static_cast< uno::Reference< XAccessibleValue > * >( 0 ) ) )
    {
        uno::Reference<XAccessibleValue> xValue = this;
        uno::Any aRet;
        aRet <<= xValue;
        return aRet;
    }
    else
    {
        return SwAccessibleContext::queryInterface( rType );
    }
}

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

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

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

	return aTypes;
}

uno::Sequence< sal_Int8 > SAL_CALL SwAccessibleCell::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;
}

// =====  XAccessibleValue  ===============================================

SwFrmFmt* SwAccessibleCell::GetTblBoxFormat() const
{
    DBG_ASSERT( GetFrm() != NULL, "no frame?" );
    DBG_ASSERT( GetFrm()->IsCellFrm(), "no cell frame?" );

    const SwCellFrm* pCellFrm = static_cast<const SwCellFrm*>( GetFrm() );
    return pCellFrm->GetTabBox()->GetFrmFmt();
}


uno::Any SwAccessibleCell::getCurrentValue( )
    throw( uno::RuntimeException )
{
	vos::OGuard aGuard(Application::GetSolarMutex());
	CHECK_FOR_DEFUNC( XAccessibleValue );

    uno::Any aAny;
    aAny <<= GetTblBoxFormat()->GetTblBoxValue().GetValue();
    return aAny;
}

sal_Bool SwAccessibleCell::setCurrentValue( const uno::Any& aNumber )
    throw( uno::RuntimeException )
{
	vos::OGuard aGuard(Application::GetSolarMutex());
	CHECK_FOR_DEFUNC( XAccessibleValue );

    double fValue = 0;
    sal_Bool bValid = (aNumber >>= fValue);
    if( bValid )
    {
        SwTblBoxValue aValue( fValue );
        GetTblBoxFormat()->SetFmtAttr( aValue );
    }
    return bValid;
}

uno::Any SwAccessibleCell::getMaximumValue( )
    throw( uno::RuntimeException )
{
    uno::Any aAny;
    aAny <<= DBL_MAX;
    return aAny;
}

uno::Any SwAccessibleCell::getMinimumValue(  )
    throw( uno::RuntimeException )
{
    uno::Any aAny;
    aAny <<= -DBL_MAX;
    return aAny;
}