/**************************************************************
 * 
 * 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 <accfrmobjslist.hxx>
#include <accmap.hxx>
#include <acccontext.hxx>

#include <pagefrm.hxx>
#include <sortedobjs.hxx>
#include <anchoredobject.hxx>

using namespace ::sw::access;

SwAccessibleChildSList_const_iterator::SwAccessibleChildSList_const_iterator(
    const SwAccessibleChildSList& rLst,
    SwAccessibleMap& rAccMap )
    : rList( rLst ),
      aCurr( rList.GetFrm().GetLower() ),
      nNextObj( 0 )
{
	if( !aCurr.GetSwFrm() )
	{
        const SwFrm& rFrm = rList.GetFrm();
        if( rFrm.IsPageFrm() )
		{
            const SwPageFrm& rPgFrm = static_cast< const SwPageFrm& >( rFrm );
            const SwSortedObjs *pObjs = rPgFrm.GetSortedObjs();
			if( pObjs && pObjs->Count() )
            {
                aCurr = (*pObjs)[nNextObj++]->GetDrawObj();
            }
		}
        else if( rFrm.IsTxtFrm() )
		{
            const SwSortedObjs *pObjs = rFrm.GetDrawObjs();
            if ( pObjs && pObjs->Count() )
			{
                aCurr = (*pObjs)[nNextObj++]->GetDrawObj();
				while( aCurr.IsValid() && !aCurr.IsBoundAsChar() )
                {
					aCurr = (nNextObj < pObjs->Count())
                            ? (*pObjs)[nNextObj++]->GetDrawObj()
                            : static_cast< const SdrObject *>( 0 );
                }
			}
            if ( !aCurr.IsValid() )
            {
                ::vos::ORef < SwAccessibleContext > xAccImpl =
                                    rAccMap.GetContextImpl( &rFrm, sal_False );
                if( xAccImpl.isValid() )
                {
                    SwAccessibleContext* pAccImpl = xAccImpl.getBodyPtr();
                    aCurr = SwAccessibleChild( pAccImpl->GetAdditionalAccessibleChild( 0 ) );
                    ++nNextObj;
                }
            }
		}
	}

    if( rList.IsVisibleChildrenOnly() )
	{
		// Find the first visible
		while( aCurr.IsValid() &&
               !aCurr.AlwaysIncludeAsChild() &&
               !aCurr.GetBox( rAccMap ).IsOver( rList.GetVisArea() ) )
        {
			next();
        }
	}
}

SwAccessibleChildSList_const_iterator& SwAccessibleChildSList_const_iterator::next()
{
    bool bNextTaken( true );
    if( aCurr.GetDrawObject() || aCurr.GetWindow() )
	{
        bNextTaken = false;
	}
	else if( aCurr.GetSwFrm() )
	{
		aCurr = aCurr.GetSwFrm()->GetNext();
		if( !aCurr.GetSwFrm() )
        {
            bNextTaken = false;
        }
	}

    if( !bNextTaken )
	{
        const SwFrm& rFrm = rList.GetFrm();
        if( rFrm.IsPageFrm() )
		{
            const SwPageFrm& rPgFrm = static_cast< const SwPageFrm& >( rFrm );
            const SwSortedObjs *pObjs = rPgFrm.GetSortedObjs();
            aCurr = ( pObjs && nNextObj < pObjs->Count() )
                    ? (*pObjs)[nNextObj++]->GetDrawObj()
                    : static_cast< const SdrObject *>( 0 );
        }
        else if( rFrm.IsTxtFrm() )
        {
            const SwSortedObjs* pObjs = rFrm.GetDrawObjs();
            const sal_uInt32 nObjsCount = pObjs ? pObjs->Count() : 0;
            aCurr = ( pObjs && nNextObj < nObjsCount )
                    ? (*pObjs)[nNextObj++]->GetDrawObj()
                    : static_cast< const SdrObject *>( 0 );
            while( aCurr.IsValid() && !aCurr.IsBoundAsChar() )
            {
                aCurr = ( nNextObj < nObjsCount )
                        ? (*pObjs)[nNextObj++]->GetDrawObj()
                        : static_cast< const SdrObject *>( 0 );
            }
            if ( !aCurr.IsValid() )
            {
                ::vos::ORef < SwAccessibleContext > xAccImpl =
                                    rList.GetAccMap().GetContextImpl( &rFrm, sal_False );
                if( xAccImpl.isValid() )
                {
                    SwAccessibleContext* pAccImpl = xAccImpl.getBodyPtr();
                    aCurr = SwAccessibleChild( pAccImpl->GetAdditionalAccessibleChild( nNextObj - nObjsCount ) );
                    ++nNextObj;
                }
            }
        }
	}

	return *this;
}

SwAccessibleChildSList_const_iterator& SwAccessibleChildSList_const_iterator::next_visible()
{
	next();
	while( aCurr.IsValid() &&
           !aCurr.AlwaysIncludeAsChild() &&
           !aCurr.GetBox( rList.GetAccMap() ).IsOver( rList.GetVisArea() ) )
    {
		next();
    }

	return *this;
}

SwAccessibleChildSList_const_iterator& SwAccessibleChildSList_const_iterator::operator++()
{
    return rList.IsVisibleChildrenOnly() ? next_visible() : next();
}