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Diffstat (limited to 'chart2/source/controller/main/ChartDropTargetHelper.cxx')
| -rw-r--r-- | chart2/source/controller/main/ChartDropTargetHelper.cxx | 176 |
1 files changed, 176 insertions, 0 deletions
diff --git a/chart2/source/controller/main/ChartDropTargetHelper.cxx b/chart2/source/controller/main/ChartDropTargetHelper.cxx new file mode 100644 index 000000000..15272dfc5 --- /dev/null +++ b/chart2/source/controller/main/ChartDropTargetHelper.cxx @@ -0,0 +1,176 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * This file incorporates work covered by the following license notice: + * + * 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 . + */ + +#include "ChartDropTargetHelper.hxx" +#include <DataSourceHelper.hxx> + +#include <com/sun/star/chart2/XChartDocument.hpp> +#include <com/sun/star/chart2/data/XDataProvider.hpp> +#include <com/sun/star/container/XChild.hpp> + +#include <sot/formats.hxx> +#include <vector> + +using namespace ::com::sun::star; + +using ::com::sun::star::uno::Reference; +using ::com::sun::star::uno::Sequence; + +namespace +{ + +std::vector< OUString > lcl_getStringsFromByteSequence( + const Sequence< sal_Int8 > & aByteSequence ) +{ + std::vector< OUString > aResult; + const sal_Int32 nLength = aByteSequence.getLength(); + const char * pBytes( reinterpret_cast< const char* >( aByteSequence.getConstArray())); + sal_Int32 nStartPos = 0; + for( sal_Int32 nPos=0; nPos<nLength; ++nPos ) + { + if( pBytes[nPos] == '\0' ) + { + aResult.emplace_back( pBytes + nStartPos, (nPos - nStartPos), RTL_TEXTENCODING_ASCII_US ); + nStartPos = nPos + 1; + } + } + return aResult; +} + +} // anonymous namespace + +namespace chart +{ + +ChartDropTargetHelper::ChartDropTargetHelper( + const Reference< datatransfer::dnd::XDropTarget >& rxDropTarget, + const Reference< chart2::XChartDocument > & xChartDocument ) : + DropTargetHelper( rxDropTarget ), + m_xChartDocument( xChartDocument ) +{} + +ChartDropTargetHelper::~ChartDropTargetHelper() +{} + +bool ChartDropTargetHelper::satisfiesPrerequisites() const +{ + return ( m_xChartDocument.is() && + ! m_xChartDocument->hasInternalDataProvider()); +} + +sal_Int8 ChartDropTargetHelper::AcceptDrop( const AcceptDropEvent& rEvt ) +{ + sal_Int8 nResult = DND_ACTION_NONE; + + if( ( rEvt.mnAction == DND_ACTION_COPY || + rEvt.mnAction == DND_ACTION_MOVE ) && + satisfiesPrerequisites() && + IsDropFormatSupported( SotClipboardFormatId::LINK ) ) + { + // @todo: check if the data is suitable. Is this possible without XTransferable? + nResult = rEvt.mnAction; + } + + return nResult; +} + +sal_Int8 ChartDropTargetHelper::ExecuteDrop( const ExecuteDropEvent& rEvt ) +{ + sal_Int8 nResult = DND_ACTION_NONE; + + if( ( rEvt.mnAction == DND_ACTION_COPY || + rEvt.mnAction == DND_ACTION_MOVE ) && + rEvt.maDropEvent.Transferable.is() && + satisfiesPrerequisites()) + { + TransferableDataHelper aDataHelper( rEvt.maDropEvent.Transferable ); + if( aDataHelper.HasFormat( SotClipboardFormatId::LINK )) + { + Sequence<sal_Int8> aBytes = aDataHelper.GetSequence(SotClipboardFormatId::LINK, OUString()); + if (aBytes.hasElements()) + { + std::vector< OUString > aStrings( lcl_getStringsFromByteSequence( aBytes )); + if( aStrings.size() >= 3 && aStrings[0] == "soffice" ) + { + OUString aRangeString( aStrings[2] ); + Reference< container::XChild > xChild( m_xChartDocument, uno::UNO_QUERY ); + if( xChild.is()) + { + Reference< frame::XModel > xParentModel( xChild->getParent(), uno::UNO_QUERY ); + if( xParentModel.is() && + m_xChartDocument.is()) + { + // @todo: get the title somehow and compare it to + // aDocName if successful (the document is the + // parent) + Reference< chart2::XDiagram > xDiagram( m_xChartDocument->getFirstDiagram() ); + Reference< chart2::data::XDataProvider > xDataProvider( m_xChartDocument->getDataProvider()); + if( xDataProvider.is() && xDiagram.is() && + DataSourceHelper::allArgumentsForRectRangeDetected( m_xChartDocument )) + { + Reference< chart2::data::XDataSource > xDataSource( + DataSourceHelper::pressUsedDataIntoRectangularFormat( m_xChartDocument )); + Sequence< beans::PropertyValue > aArguments( + xDataProvider->detectArguments( xDataSource )); + + OUString aOldRange; + beans::PropertyValue * pCellRange = nullptr; + for( sal_Int32 i=0; i<aArguments.getLength(); ++i ) + { + if ( aArguments[i].Name == "CellRangeRepresentation" ) + { + pCellRange = (aArguments.getArray() + i); + aArguments[i].Value >>= aOldRange; + break; + } + } + if( pCellRange ) + { + // copy means add ranges, move means replace + if( rEvt.mnAction == DND_ACTION_COPY ) + { + // @todo: using implicit knowledge that ranges can be + // merged with ";". This should be done more general + pCellRange->Value <<= aOldRange + ";" + aRangeString; + } + // move means replace range + else + { + pCellRange->Value <<= aRangeString; + } + + xDataSource.set( xDataProvider->createDataSource( aArguments )); + xDiagram->setDiagramData( xDataSource, aArguments ); + + // always return copy state to avoid deletion of the dragged range + nResult = DND_ACTION_COPY; + } + } + } + } + } + } + } + } + return nResult; +} + +} // namespace chart + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |