/**************************************************************
 * 
 * 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.
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 *************************************************************/


#include "oox/xls/commentsbuffer.hxx"

#include <com/sun/star/sheet/XSheetAnnotationAnchor.hpp>
#include <com/sun/star/sheet/XSheetAnnotationShapeSupplier.hpp>
#include <com/sun/star/sheet/XSheetAnnotations.hpp>
#include <com/sun/star/sheet/XSheetAnnotationsSupplier.hpp>
#include "oox/helper/attributelist.hxx"
#include "oox/vml/vmlshape.hxx"
#include "oox/xls/addressconverter.hxx"
#include "oox/xls/biffinputstream.hxx"
#include "oox/xls/drawingfragment.hxx"
#include "oox/xls/drawingmanager.hxx"

namespace oox {
namespace xls {

// ============================================================================

using namespace ::com::sun::star::drawing;
using namespace ::com::sun::star::sheet;
using namespace ::com::sun::star::table;
using namespace ::com::sun::star::text;
using namespace ::com::sun::star::uno;

using ::rtl::OUString;

// ============================================================================

namespace {

const sal_uInt16 BIFF_NOTE_VISIBLE          = 0x0002;

} // namespace

// ============================================================================

CommentModel::CommentModel() :
    mnAuthorId( -1 ),
    mnObjId( BIFF_OBJ_INVALID_ID ),
    mbVisible( false )
{
}

// ----------------------------------------------------------------------------

Comment::Comment( const WorksheetHelper& rHelper ) :
    WorksheetHelper( rHelper )
{
}

void Comment::importComment( const AttributeList& rAttribs )
{
    maModel.mnAuthorId = rAttribs.getInteger( XML_authorId, -1 );
    // cell range will be checked while inserting the comment into the document
    getAddressConverter().convertToCellRangeUnchecked( maModel.maRange, rAttribs.getString( XML_ref, OUString() ), getSheetIndex() );
}

void Comment::importComment( SequenceInputStream& rStrm )
{
    BinRange aBinRange;
    rStrm >> maModel.mnAuthorId >> aBinRange;
    // cell range will be checked while inserting the comment into the document
    getAddressConverter().convertToCellRangeUnchecked( maModel.maRange, aBinRange, getSheetIndex() );
}

void Comment::importNote( BiffInputStream& rStrm )
{
    BinAddress aBinAddr;
    rStrm >> aBinAddr;
    // cell range will be checked while inserting the comment into the document
    getAddressConverter().convertToCellRangeUnchecked( maModel.maRange, BinRange( aBinAddr ), getSheetIndex() );

    // remaining record data is BIFF dependent
    switch( getBiff() )
    {
        case BIFF2:
        case BIFF3:
            importNoteBiff2( rStrm );
        break;
        case BIFF4:
        case BIFF5:
            importNoteBiff2( rStrm );
            // in BIFF4 and BIFF5, comments can have an associated sound
            if( (rStrm.getNextRecId() == BIFF_ID_NOTESOUND) && rStrm.startNextRecord() )
                importNoteSound( rStrm );
        break;
        case BIFF8:
            importNoteBiff8( rStrm );
        break;
        case BIFF_UNKNOWN:
        break;
    }
}

RichStringRef Comment::createText()
{
    maModel.mxText.reset( new RichString( *this ) );
    return maModel.mxText;
}

void Comment::finalizeImport()
{
    // BIFF12 stores cell range instead of cell address, use first cell of this range
    OSL_ENSURE( (maModel.maRange.StartColumn == maModel.maRange.EndColumn) &&
        (maModel.maRange.StartRow == maModel.maRange.EndRow),
        "Comment::finalizeImport - comment anchor should be a single cell" );
    CellAddress aNotePos( maModel.maRange.Sheet, maModel.maRange.StartColumn, maModel.maRange.StartRow );
    if( getAddressConverter().checkCellAddress( aNotePos, true ) && maModel.mxText.get() ) try
    {
        Reference< XSheetAnnotationsSupplier > xAnnosSupp( getSheet(), UNO_QUERY_THROW );
        Reference< XSheetAnnotations > xAnnos( xAnnosSupp->getAnnotations(), UNO_SET_THROW );
        // non-empty string required by note implementation (real text will be added below)
        xAnnos->insertNew( aNotePos, OUString( sal_Unicode( ' ' ) ) );

        // receive created note from cell (insertNew does not return the note)
        Reference< XSheetAnnotationAnchor > xAnnoAnchor( getCell( aNotePos ), UNO_QUERY_THROW );
        Reference< XSheetAnnotation > xAnno( xAnnoAnchor->getAnnotation(), UNO_SET_THROW );
        Reference< XSheetAnnotationShapeSupplier > xAnnoShapeSupp( xAnno, UNO_QUERY_THROW );
        Reference< XShape > xAnnoShape( xAnnoShapeSupp->getAnnotationShape(), UNO_SET_THROW );

        // convert shape formatting and visibility
        sal_Bool bVisible = sal_True;
        switch( getFilterType() )
        {
            case FILTER_OOXML:
                if( const ::oox::vml::ShapeBase* pNoteShape = getVmlDrawing().getNoteShape( aNotePos ) )
                {
                    // position and formatting
                    pNoteShape->convertFormatting( xAnnoShape );
                    // visibility
                    const ::oox::vml::ClientData* pClientData = pNoteShape->getClientData();
                    bVisible = pClientData && pClientData->mbVisible;
                }
            break;
            case FILTER_BIFF:
                bVisible = maModel.mbVisible;
            break;
            case FILTER_UNKNOWN:
            break;
        }
        xAnno->setIsVisible( bVisible );

        // insert text and convert text formatting
        maModel.mxText->finalizeImport();
        Reference< XText > xAnnoText( xAnnoShape, UNO_QUERY_THROW );
        maModel.mxText->convert( xAnnoText, true );
    }
    catch( Exception& )
    {
    }
}

// private --------------------------------------------------------------------

void Comment::importNoteBiff2( BiffInputStream& rStrm )
{
    sal_uInt16 nTotalLen;
    rStrm >> nTotalLen;
    sal_uInt16 nPartLen = ::std::min( nTotalLen, static_cast< sal_uInt16 >( rStrm.getRemaining() ) );
    RichStringRef xNoteText = createText();
    xNoteText->importCharArray( rStrm, nPartLen, getTextEncoding() );

    nTotalLen = nTotalLen - nPartLen;   // operator-=() gives compiler warning
    while( (nTotalLen > 0) && (rStrm.getNextRecId() == BIFF_ID_NOTE) && rStrm.startNextRecord() )
    {
        sal_uInt16 nMarker;
        rStrm >> nMarker;
        rStrm.skip( 2 );
        rStrm >> nPartLen;
        OSL_ENSURE( nMarker == 0xFFFF, "Comment::importNoteBiff2 - missing continuation NOTE record" );
        if( nMarker == 0xFFFF )
        {
            OSL_ENSURE( nPartLen <= nTotalLen, "Comment::importNoteBiff2 - string too long" );
            // call to RichString::importCharArray() appends new text portion
            xNoteText->importCharArray( rStrm, nPartLen, getTextEncoding() );
            nTotalLen = nTotalLen - ::std::min( nTotalLen, nPartLen );
        }
        else
        {
            // seems to be a new note, rewind record, so worksheet fragment loop will find it
            rStrm.rewindRecord();
            nTotalLen = 0;
        }
    }
}

void Comment::importNoteBiff8( BiffInputStream& rStrm )
{
    sal_uInt16 nFlags;
    rStrm >> nFlags >> maModel.mnObjId;
    maModel.maAuthor = rStrm.readUniString();
    maModel.mbVisible = getFlag( nFlags, BIFF_NOTE_VISIBLE );
}

void Comment::importNoteSound( BiffInputStream& /*rStrm*/ )
{
}

// ============================================================================

CommentsBuffer::CommentsBuffer( const WorksheetHelper& rHelper ) :
    WorksheetHelper( rHelper )
{
}

void CommentsBuffer::appendAuthor( const OUString& rAuthor )
{
    maAuthors.push_back( rAuthor );
}

CommentRef CommentsBuffer::createComment()
{
    CommentRef xComment( new Comment( *this ) );
    maComments.push_back( xComment );
    return xComment;
}

void CommentsBuffer::finalizeImport()
{
    maComments.forEachMem( &Comment::finalizeImport );
}

// ============================================================================

} // namespace xls
} // namespace oox