documentenumeration.cxx

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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 * 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
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 *   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 <sal/config.h>
 
#include <set>
 
#include "documentenumeration.hxx"
 
#include <com/sun/star/frame/Desktop.hpp>
#include <com/sun/star/frame/XModel2.hpp>
#include <com/sun/star/frame/FrameSearchFlag.hpp>
 
#include <comphelper/diagnose_ex.hxx>
 
namespace basctl::docs {
 
    using ::com::sun::star::uno::Exception;
    using ::com::sun::star::uno::Reference;
    using ::com::sun::star::uno::UNO_QUERY_THROW;
    using ::com::sun::star::uno::UNO_SET_THROW;
    using ::com::sun::star::frame::Desktop;
    using ::com::sun::star::frame::XDesktop2;
    using ::com::sun::star::container::XEnumeration;
    using ::com::sun::star::frame::XModel;
    using ::com::sun::star::frame::XFrames;
    using ::com::sun::star::frame::XController;
    using ::com::sun::star::frame::XModel2;
    using ::com::sun::star::uno::UNO_QUERY;
    using ::com::sun::star::uno::Sequence;
    using ::com::sun::star::frame::XFrame;
 
    namespace FrameSearchFlag = ::com::sun::star::frame::FrameSearchFlag;
 
    // DocumentEnumeration
    DocumentEnumeration::DocumentEnumeration( Reference< css::uno::XComponentContext > const & _rContext, const IDocumentDescriptorFilter* _pFilter )
        : m_xContext( _rContext )
        , m_pFilter( _pFilter )
    {
    }
 
    DocumentEnumeration::~DocumentEnumeration()
    {
    }
 
    namespace
    {
        void lcl_getDocumentControllers_nothrow( DocumentDescriptor& _io_rDocDesc )
        {
            OSL_PRECOND( _io_rDocDesc.xModel.is(), "lcl_getDocumentControllers_nothrow: illegal model!" );
 
            _io_rDocDesc.aControllers.clear();
            try
            {
                Reference< XModel2 > xModel2( _io_rDocDesc.xModel, UNO_QUERY );
                if ( xModel2.is() )
                {
                    Reference< XEnumeration > xEnum( xModel2->getControllers(), UNO_SET_THROW );
                    while ( xEnum->hasMoreElements() )
                    {
                        Reference< XController > xController( xEnum->nextElement(), UNO_QUERY_THROW );
                        _io_rDocDesc.aControllers.push_back( xController );
                    }
                }
                else if ( _io_rDocDesc.xModel.is() )
                    _io_rDocDesc.aControllers.push_back( _io_rDocDesc.xModel->getCurrentController() );
            }
            catch( const Exception& )
            {
                DBG_UNHANDLED_EXCEPTION("basctl.basicide");
            }
        }
 
        void lcl_getDocuments_nothrow( const Sequence< Reference< XFrame > >& _rFrames, Documents& _out_rDocuments,
            const IDocumentDescriptorFilter* _pFilter )
        {
            // ensure we don't encounter some models multiple times
            std::set< Reference< XModel > > aEncounteredModels;
 
            for ( auto const & rFrame : _rFrames )
            {
                try
                {
                    OSL_ENSURE( rFrame.is(), "lcl_getDocuments_nothrow: illegal frame!" );
                    if ( !rFrame.is() )
                        continue;
                    Reference< XController > xController( rFrame->getController() );
                    if ( !xController.is() )
                        continue;
 
                    Reference< XModel > xModel( xController->getModel() );
                    if ( !xModel.is() )
                        // though it's legal for a controller to not have a model, we're not interested in
                        // those
                        continue;
 
                    if ( !aEncounteredModels.insert( xModel ).second )
                        // there might be multiple frames for the same model
                        // handle it only once
                        continue;
 
                    // create a DocumentDescriptor
                    DocumentDescriptor aDescriptor;
                    aDescriptor.xModel = xModel;
                    lcl_getDocumentControllers_nothrow( aDescriptor );
 
                    // consult filter, if there is one
                    if ( _pFilter && !_pFilter->includeDocument( aDescriptor ) )
                        continue;
 
                    _out_rDocuments.push_back( aDescriptor );
                }
                catch( const Exception& )
                {
                    DBG_UNHANDLED_EXCEPTION("basctl.basicide");
                }
            }
        }
    }
 
    void DocumentEnumeration::getDocuments( Documents& _out_rDocuments ) const
    {
        _out_rDocuments.clear();
 
        try
        {
            const Reference< XDesktop2 > xDesktop = Desktop::create( m_xContext );
            const Reference< XFrames > xFrames( xDesktop->getFrames(), UNO_SET_THROW );
            const Sequence< Reference< XFrame > > aFrames( xFrames->queryFrames( FrameSearchFlag::ALL ) );
 
            lcl_getDocuments_nothrow( aFrames, _out_rDocuments, m_pFilter );
        }
        catch( const Exception& )
        {
            DBG_UNHANDLED_EXCEPTION("basctl.basicide");
        }
    }
 
} // namespace basctl::docs
 
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