xref: /aoo4110/main/sfx2/source/dialog/filtergrouping.cxx (revision b1cdbd2c)

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// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_sfx2.hxx"
#include "filtergrouping.hxx"
#include <sfx2/fcontnr.hxx>
#include <sfx2/filedlghelper.hxx>
#include <sfx2/sfx.hrc>
#include <sfx2/docfac.hxx>
#include "sfx2/sfxresid.hxx"
#include <osl/thread.h>
#include <com/sun/star/ui/dialogs/XFilterGroupManager.hpp>
#include <com/sun/star/beans/StringPair.hpp>
#include <com/sun/star/uno/Sequence.hxx>
#include <unotools/confignode.hxx>
#include <comphelper/processfactory.hxx>
#include <comphelper/sequenceashashmap.hxx>
#include <tools/wldcrd.hxx>
#include <tools/diagnose_ex.h>

#include <list>
#include <vector>
#include <map>
#include <algorithm>

//........................................................................
namespace sfx2
{
//........................................................................

//#define DISABLE_GROUPING_AND_CLASSIFYING
	// not using the functionallity herein, yet

	using namespace ::com::sun::star::uno;
	using namespace ::com::sun::star::ui::dialogs;
	using namespace ::com::sun::star::lang;
	using namespace ::com::sun::star::beans;
	using namespace ::utl;

	//====================================================================
	/**

	Some general words about what's going on here ....

	<p>In our file open dialog, usually we display every filter we know. That's how it was before: every filter
	lead to an own line in the filter list box, e.g. "StarWriter 5.0 Dokument" or "Microsoft Word 97".</p>

	<p>But then the PM came. And everything changed ....</p>

	<p>A basic idea are groups: Why simply listing all the single filters? Couldn't we draw nice separators
	between the filters which logically belong together? I.e. all the filters which open a document in StarWriter:
	couldn't we separate them from all the filters which open the document in StarCalc?<br/>
	So spoke the PM, and engineering obeyed.</p>

	<p>So we have groups. They're just a visual aspect: All the filters of a group are presented together, separated
	by a line from other groups.</p>

	<p>Let's be honest: How the concrete implementation of the file picker service separates the different groups
	is a matter of this implementation. We only do this grouping and suggest it to the FilePicker service ...</p>

	<p>Now for the second concept:<br/>
	Thinking about it (and that's what the PM did), both "StarWriter 5.0 Dokument" and "Microsoft Word 97"
	describe a text document. It's a text. It's of no interest for the user that one of the texts was saved in
	MS' format, and one in our own format.<br/>
	So in a first step, we want to have a filter entry "Text documents". This would cover both above-mentioned
	filters, as well as any other filters for documents which are texts.</p>

	<p>Such an entry as "Text documents" is - within the scope of this file - called "class" or "filter class".</p>

	<p>In the file-open-dialog, such a class looks like an ordinary filter: it's simply a name in the filter
	listbox. Selecting means that all the files matching one of the "sub-filters" are displayed (in the example above,
	this would be "*.sdw", "*.doc" and so on).</p>

	<p>Now there are two types of filter classes: global ones and local ones. "Text documents" is a global class. As
	well as "Spreadsheets". Or "Web pages".<br/>
	Let's have a look at a local class: The filters "MS Word 95" and "MS WinWord 6.0" together form the class
	"Microsoft Word 6.0 / 95" (don't ask for the reasons. At least not me. Ask the PM). There are a lot of such
	local classes ...</p>

	<p>The difference between global and local classes is as follows: Global classes are presented in an own group.
	There is one dedicated group at the top of the list, containing all the global groups - no local groups and no
	single filters.</p>

	<p>Ehm - it was a lie. Not really at the top. Before this group, there is this single "All files" entry. It forms
	it's own group. But this is uninteresting here.</p>

	<p>Local classes must consist of filters which - without the classification - would all belong to the same group.
	Then, they're combined to one entry (in the example above: "Microsoft Word 6.0 / 95"), and this entry is inserted
	into the file picker filter list, instead of the single filters which form the class.</p>

	<p>This is an interesting difference between local and global classes: Filters which are part of a global class
	are listed in there own group, too. Filters in local classes aren't listed a second time - neither directly (as
	the filter itself) nor indirectly (as part of another local group).</p>

	<p>The only exception are filters which are part of a global class <em>and</em> a local class. This is allowed.
	Beeing cotained in two local classes isn't.</p>

	<p>So that's all what you need to know: Understand the concept of "filter classes" (a filter class combines
	different filters and acts as if it's a filter itself) and the concept of groups (a group just describes a
	logical correlation of filters and usually is represented to the user by drawing group separators in the filter
	list).</p>

	<p>If you got it, go try understanding this file :).</p>

	*/


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

	typedef StringPair							FilterDescriptor;	// a single filter or a filter class (display name and filter mask)
	typedef ::std::list< FilterDescriptor > 	FilterGroup;		// a list of single filter entries
	typedef ::std::list< FilterGroup >			GroupedFilterList;	// a list of all filters, already grouped

	/// the logical name of a filter
	typedef ::rtl::OUString 					FilterName;

	// a struct which holds references from a logical filter name to a filter group entry
	// used for quick lookup of classes (means class entries - entries representing a class)
	// which a given filter may belong to
	typedef ::std::map< ::rtl::OUString, FilterGroup::iterator >	FilterGroupEntryReferrer;

	/// a descriptor for a filter class (which in the final dialog is represented by one filter entry)
	typedef struct _tagFilterClass
	{
		::rtl::OUString 			sDisplayName;		// the display name
		Sequence< FilterName >		aSubFilters;		// the (logical) names of the filter which belong to the class
	} FilterClass;

	typedef ::std::list< FilterClass >									FilterClassList;
	typedef ::std::map< ::rtl::OUString, FilterClassList::iterator >	FilterClassReferrer;

	typedef ::std::vector< ::rtl::OUString >							StringArray;

// =======================================================================
// = reading of configuration data
// =======================================================================

	//--------------------------------------------------------------------
	void lcl_ReadFilterClass( const OConfigurationNode& _rClassesNode, const ::rtl::OUString& _rLogicalClassName,
		FilterClass& /* [out] */ _rClass )
	{
		static const ::rtl::OUString sDisplaNameNodeName( RTL_CONSTASCII_USTRINGPARAM( "DisplayName" ) );
		static const ::rtl::OUString sSubFiltersNodeName( RTL_CONSTASCII_USTRINGPARAM( "Filters" ) );

			// the description node for the current class
		OConfigurationNode aClassDesc = _rClassesNode.openNode( _rLogicalClassName );

		// the values
		aClassDesc.getNodeValue( sDisplaNameNodeName ) >>= _rClass.sDisplayName;
		aClassDesc.getNodeValue( sSubFiltersNodeName ) >>= _rClass.aSubFilters;
	}

	//--------------------------------------------------------------------
	struct CreateEmptyClassRememberPos : public ::std::unary_function< FilterName, void >
	{
	protected:
		FilterClassList&		m_rClassList;
		FilterClassReferrer&	m_rClassesReferrer;

	public:
		CreateEmptyClassRememberPos( FilterClassList& _rClassList, FilterClassReferrer& _rClassesReferrer )
			:m_rClassList		( _rClassList )
			,m_rClassesReferrer ( _rClassesReferrer )
		{
		}

		// operate on a single class name
		void operator() ( const FilterName& _rLogicalFilterName )
		{
			// insert a new (empty) class
			m_rClassList.push_back( FilterClass() );
			// get the position of this new entry
			FilterClassList::iterator aInsertPos = m_rClassList.end();
			--aInsertPos;
			// remember this position
			m_rClassesReferrer.insert( FilterClassReferrer::value_type( _rLogicalFilterName, aInsertPos ) );
		}
	};

	//--------------------------------------------------------------------
	struct ReadGlobalFilter : public ::std::unary_function< FilterName, void >
	{
	protected:
		OConfigurationNode		m_aClassesNode;
		FilterClassReferrer&	m_aClassReferrer;

	public:
		ReadGlobalFilter( const OConfigurationNode& _rClassesNode, FilterClassReferrer& _rClassesReferrer )
			:m_aClassesNode 	( _rClassesNode )
			,m_aClassReferrer	( _rClassesReferrer )
		{
		}

		// operate on a single logical name
		void operator() ( const FilterName& _rName )
		{
			FilterClassReferrer::iterator aClassRef = m_aClassReferrer.find( _rName );
			if ( m_aClassReferrer.end() == aClassRef )
			{
				// we do not know this global class
				DBG_ERROR( "ReadGlobalFilter::operator(): unknown filter name!" );
				// TODO: perhaps we should be more tolerant - at the moment, the filter is dropped
				// We could silently push_back it to the container ....
			}
			else
			{
				// read the data of this class into the node referred to by aClassRef
				lcl_ReadFilterClass( m_aClassesNode, _rName, *aClassRef->second );
			}
		}
	};

	//--------------------------------------------------------------------
	void lcl_ReadGlobalFilters( const OConfigurationNode& _rFilterClassification, FilterClassList& _rGlobalClasses, StringArray& _rGlobalClassNames )
	{
		_rGlobalClasses.clear();
		_rGlobalClassNames.clear();

        //================================================================
		// get the list describing the order of all global classes
		Sequence< ::rtl::OUString > aGlobalClasses;
		_rFilterClassification.getNodeValue( DEFINE_CONST_OUSTRING( "GlobalFilters/Order" ) ) >>= aGlobalClasses;

		const ::rtl::OUString* pNames = aGlobalClasses.getConstArray();
		const ::rtl::OUString* pNamesEnd = pNames + aGlobalClasses.getLength();

		// copy the logical names
		_rGlobalClassNames.resize( aGlobalClasses.getLength() );
		::std::copy( pNames, pNamesEnd, _rGlobalClassNames.begin() );

		// Global classes are presented in an own group, so their order matters (while the order of the
		// "local classes" doesn't).
		// That's why we can't simply add the global classes to _rGlobalClasses using the order in which they
		// are returned from the configuration - it is completely undefined, and we need a _defined_ order.
		FilterClassReferrer aClassReferrer;
		::std::for_each(
			pNames,
			pNamesEnd,
			CreateEmptyClassRememberPos( _rGlobalClasses, aClassReferrer )
		);
			// now _rGlobalClasses contains a dummy entry for each global class,
			// while aClassReferrer maps from the logical name of the class to the position within _rGlobalClasses where
			// it's dummy entry resides

        //================================================================
		// go for all the single class entries
		OConfigurationNode aFilterClassesNode =
			_rFilterClassification.openNode( DEFINE_CONST_OUSTRING( "GlobalFilters/Classes" ) );
		Sequence< ::rtl::OUString > aFilterClasses = aFilterClassesNode.getNodeNames();
		::std::for_each(
			aFilterClasses.getConstArray(),
			aFilterClasses.getConstArray() + aFilterClasses.getLength(),
			ReadGlobalFilter( aFilterClassesNode, aClassReferrer )
		);
	}

	//--------------------------------------------------------------------
	struct ReadLocalFilter : public ::std::unary_function< FilterName, void >
	{
	protected:
		OConfigurationNode		m_aClassesNode;
		FilterClassList&		m_rClasses;

	public:
		ReadLocalFilter( const OConfigurationNode& _rClassesNode, FilterClassList& _rClasses )
			:m_aClassesNode ( _rClassesNode )
			,m_rClasses 	( _rClasses )
		{
		}

		// operate on a single logical name
		void operator() ( const FilterName& _rName )
		{
			// read the data for this class
			FilterClass aClass;
			lcl_ReadFilterClass( m_aClassesNode, _rName, aClass );

			// insert the class descriptor
			m_rClasses.push_back( aClass );
		}
	};

	//--------------------------------------------------------------------
	void lcl_ReadLocalFilters( const OConfigurationNode& _rFilterClassification, FilterClassList& _rLocalClasses )
	{
		_rLocalClasses.clear();

		// the node for the local classes
		OConfigurationNode aFilterClassesNode =
			_rFilterClassification.openNode( DEFINE_CONST_OUSTRING( "LocalFilters/Classes" ) );
		Sequence< ::rtl::OUString > aFilterClasses = aFilterClassesNode.getNodeNames();

		::std::for_each(
			aFilterClasses.getConstArray(),
			aFilterClasses.getConstArray() + aFilterClasses.getLength(),
			ReadLocalFilter( aFilterClassesNode, _rLocalClasses )
		);
	}

	//--------------------------------------------------------------------
	void lcl_ReadClassification( FilterClassList& _rGlobalClasses, StringArray& _rGlobalClassNames, FilterClassList& _rLocalClasses )
	{
        //================================================================
		// open our config node
		OConfigurationTreeRoot aFilterClassification = OConfigurationTreeRoot::createWithServiceFactory(
			::comphelper::getProcessServiceFactory(),
			DEFINE_CONST_OUSTRING( "org.openoffice.Office.UI/FilterClassification" ),
			-1,
			OConfigurationTreeRoot::CM_READONLY
		);

        //================================================================
		// go for the global classes
		lcl_ReadGlobalFilters( aFilterClassification, _rGlobalClasses, _rGlobalClassNames );

        //================================================================
		// fo for the local classes
		lcl_ReadLocalFilters( aFilterClassification, _rLocalClasses );

	}

// =======================================================================
// = grouping and classifying
// =======================================================================

	//--------------------------------------------------------------------
	// a struct which adds helps remembering a reference to a class entry
	struct ReferToFilterEntry : public ::std::unary_function< FilterName, void >
	{
	protected:
		FilterGroupEntryReferrer&	m_rEntryReferrer;
		FilterGroup::iterator		m_aClassPos;

	public:
		ReferToFilterEntry( FilterGroupEntryReferrer& _rEntryReferrer, const FilterGroup::iterator& _rClassPos )
			:m_rEntryReferrer( _rEntryReferrer )
			,m_aClassPos( _rClassPos )
		{
		}

		// operate on a single filter name
		void operator() ( const FilterName& _rName )
		{
#ifdef DBG_UTIL
			::std::pair< FilterGroupEntryReferrer::iterator, bool > aInsertRes =
#endif
			m_rEntryReferrer.insert( FilterGroupEntryReferrer::value_type( _rName, m_aClassPos ) );
			DBG_ASSERT( aInsertRes.second, "ReferToFilterEntry::operator(): already have an element for this name!" );
		}
	};

	//--------------------------------------------------------------------
	struct FillClassGroup : public ::std::unary_function< FilterClass, void >
	{
	protected:
		FilterGroup&				m_rClassGroup;
		FilterGroupEntryReferrer&	m_rClassReferrer;

	public:
		FillClassGroup( FilterGroup& _rClassGroup, FilterGroupEntryReferrer& _rClassReferrer )
			:m_rClassGroup		( _rClassGroup )
			,m_rClassReferrer	( _rClassReferrer )
		{
		}

		// operate on a single class
		void operator() ( const FilterClass& _rClass )
		{
			// create an empty filter descriptor for the class
			FilterDescriptor aClassEntry;
			// set it's name (which is all we know by now)
			aClassEntry.First = _rClass.sDisplayName;

			// add it to the group
			m_rClassGroup.push_back( aClassEntry );
			// the position of the newly added class
			FilterGroup::iterator aClassEntryPos = m_rClassGroup.end();
			--aClassEntryPos;

			// and for all the sub filters of the class, remember the class
			// (respectively the position of the class it the group)
			::std::for_each(
				_rClass.aSubFilters.getConstArray(),
				_rClass.aSubFilters.getConstArray() + _rClass.aSubFilters.getLength(),
				ReferToFilterEntry( m_rClassReferrer, aClassEntryPos )
			);
		}
	};

	//--------------------------------------------------------------------
	static const sal_Unicode s_cWildcardSeparator( ';' );

    //====================================================================
	const ::rtl::OUString& getSeparatorString()
	{
		static ::rtl::OUString s_sSeparatorString( &s_cWildcardSeparator, 1 );
		return s_sSeparatorString;
	}

    //====================================================================
	struct CheckAppendSingleWildcard : public ::std::unary_function< ::rtl::OUString, void >
	{
		::rtl::OUString& _rToBeExtended;

		CheckAppendSingleWildcard( ::rtl::OUString& _rBase ) : _rToBeExtended( _rBase ) { }

		void operator() ( const ::rtl::OUString& _rWC )
		{
			// check for double wildcards
			sal_Int32 nExistentPos = _rToBeExtended.indexOf( _rWC );
			if	( -1 < nExistentPos )
			{	// found this wildcard (already part of _rToBeExtended)
				const sal_Unicode* pBuffer = _rToBeExtended.getStr();
				if	(	( 0 == nExistentPos )
					||	( s_cWildcardSeparator == pBuffer[ nExistentPos - 1 ] )
					)
				{	// the wildcard really starts at this position (it starts at pos 0 or the previous character is a separator
					sal_Int32 nExistentWCEnd = nExistentPos + _rWC.getLength();
					if	(	( _rToBeExtended.getLength() == nExistentWCEnd )
						||	( s_cWildcardSeparator == pBuffer[ nExistentWCEnd ] )
						)
					{	// it's really the complete wildcard we found
						// (not something like _rWC beeing "*.t" and _rToBeExtended containing "*.txt")
						// -> outta here
						return;
					}
				}
			}

			if ( _rToBeExtended.getLength() )
				_rToBeExtended += getSeparatorString();
			_rToBeExtended += _rWC;
		}
	};

    //====================================================================
	// a helper struct which adds a fixed (Sfx-)filter to a filter group entry given by iterator
	struct AppendWildcardToDescriptor : public ::std::unary_function< FilterGroupEntryReferrer::value_type, void >
	{
	protected:
		::std::vector< ::rtl::OUString > aWildCards;

	public:
		AppendWildcardToDescriptor( const String& _rWildCard );

		// operate on a single class entry
		void operator() ( const FilterGroupEntryReferrer::value_type& _rClassReference )
		{
			// simply add our wildcards
			::std::for_each(
				aWildCards.begin(),
				aWildCards.end(),
				CheckAppendSingleWildcard( _rClassReference.second->Second )
			);
		}
	};

    //====================================================================
	AppendWildcardToDescriptor::AppendWildcardToDescriptor( const String& _rWildCard )
	{
		DBG_ASSERT( _rWildCard.Len(),
			"AppendWildcardToDescriptor::AppendWildcardToDescriptor: invalid wildcard!" );
		DBG_ASSERT( _rWildCard.GetBuffer()[0] != s_cWildcardSeparator,
			"AppendWildcardToDescriptor::AppendWildcardToDescriptor: wildcard already separated!" );

		aWildCards.reserve( _rWildCard.GetTokenCount( s_cWildcardSeparator ) );

		const sal_Unicode* pTokenLoop = _rWildCard.GetBuffer();
		const sal_Unicode* pTokenLoopEnd = pTokenLoop + _rWildCard.Len();
		const sal_Unicode* pTokenStart = pTokenLoop;
		for ( ; pTokenLoop != pTokenLoopEnd; ++pTokenLoop )
		{
			if ( ( s_cWildcardSeparator == *pTokenLoop ) && ( pTokenLoop > pTokenStart ) )
			{	// found a new token separator (and a non-empty token)
				aWildCards.push_back( ::rtl::OUString( pTokenStart, pTokenLoop - pTokenStart ) );

				// search the start of the next token
				while ( ( pTokenStart != pTokenLoopEnd ) && ( *pTokenStart != s_cWildcardSeparator ) )
					++pTokenStart;

				if ( pTokenStart == pTokenLoopEnd )
					// reached the end
					break;

				++pTokenStart;
				pTokenLoop = pTokenStart;
			}
		}
		if ( pTokenLoop > pTokenStart )
			// the last one ....
			aWildCards.push_back( ::rtl::OUString( pTokenStart, pTokenLoop - pTokenStart ) );
	}

	//--------------------------------------------------------------------
	void lcl_InitGlobalClasses( GroupedFilterList& _rAllFilters, const FilterClassList& _rGlobalClasses, FilterGroupEntryReferrer& _rGlobalClassesRef )
	{
		// we need an extra group in our "all filters" container
		_rAllFilters.push_front( FilterGroup() );
		FilterGroup& rGlobalFilters = _rAllFilters.front();
			// it's important to work on the reference: we want to access the members of this filter group
			// by an iterator (FilterGroup::const_iterator)
		// the referrer for the global classes

		// initialize the group
		::std::for_each(
			_rGlobalClasses.begin(),
			_rGlobalClasses.end(),
			FillClassGroup( rGlobalFilters, _rGlobalClassesRef )
		);
			// now we have:
			// in rGlobalFilters: a list of FilterDescriptor's, where each's discriptor's display name is set to the name of a class
			// in aGlobalClassesRef: a mapping from logical filter names to positions within rGlobalFilters
			//	this way, if we encounter an arbitrary filter, we can easily (and efficient) check if it belongs to a global class
			//	and modify the descriptor for this class accordingly
	}

	//--------------------------------------------------------------------
	typedef ::std::vector< ::std::pair< FilterGroupEntryReferrer::mapped_type, FilterGroup::iterator > >
			MapGroupEntry2GroupEntry;
			// this is not really a map - it's just called this way because it is used as a map

	struct FindGroupEntry : public ::std::unary_function< MapGroupEntry2GroupEntry::value_type, sal_Bool >
	{
		FilterGroupEntryReferrer::mapped_type aLookingFor;
		FindGroupEntry( FilterGroupEntryReferrer::mapped_type _rLookingFor ) : aLookingFor( _rLookingFor ) { }

		sal_Bool operator() ( const MapGroupEntry2GroupEntry::value_type& _rMapEntry )
		{
			return _rMapEntry.first == aLookingFor ? sal_True : sal_False;
		}
	};

	struct CopyGroupEntryContent : public ::std::unary_function< MapGroupEntry2GroupEntry::value_type, void >
	{
		void operator() ( const MapGroupEntry2GroupEntry::value_type& _rMapEntry )
		{
#ifdef DBG_UTIL
			FilterDescriptor aHaveALook = *_rMapEntry.first;
#endif
			*_rMapEntry.second = *_rMapEntry.first;
		}
	};

	//--------------------------------------------------------------------
	struct CopyNonEmptyFilter : public ::std::unary_function< FilterDescriptor, void >
	{
		FilterGroup& rTarget;
		CopyNonEmptyFilter( FilterGroup& _rTarget ) :rTarget( _rTarget ) { }

		void operator() ( const FilterDescriptor& _rFilter )
		{
			if ( _rFilter.Second.getLength() )
				rTarget.push_back( _rFilter );
		}
	};

	//--------------------------------------------------------------------
	void lcl_GroupAndClassify( TSortedFilterList& _rFilterMatcher, GroupedFilterList& _rAllFilters )
	{
		_rAllFilters.clear();

        // ===============================================================
		// read the classification of filters
		FilterClassList aGlobalClasses, aLocalClasses;
		StringArray aGlobalClassNames;
		lcl_ReadClassification( aGlobalClasses, aGlobalClassNames, aLocalClasses );

        // ===============================================================
		// for the global filter classes
		FilterGroupEntryReferrer aGlobalClassesRef;
		lcl_InitGlobalClasses( _rAllFilters, aGlobalClasses, aGlobalClassesRef );

		// insert as much placeholders (FilterGroup's) into _rAllFilter for groups as we have global classes
		// (this assumes that both numbers are the same, which, speaking strictly, must not hold - but it does, as we know ...)
		sal_Int32 nGlobalClasses = aGlobalClasses.size();
		while ( nGlobalClasses-- )
			_rAllFilters.push_back( FilterGroup() );

        // ===============================================================
		// for the local classes:
		// if n filters belong to a local class, they do not appear in their respective group explicitly, instead
		// and entry for the class is added to the group and the extensions of the filters are collected under
		// this entry
		FilterGroupEntryReferrer aLocalClassesRef;
		FilterGroup aCollectedLocals;
		::std::for_each(
			aLocalClasses.begin(),
			aLocalClasses.end(),
			FillClassGroup( aCollectedLocals, aLocalClassesRef )
		);
		// to map from the position within aCollectedLocals to positions within the real groups
		// (where they finally belong to)
		MapGroupEntry2GroupEntry	aLocalFinalPositions;

        // ===============================================================
		// now add the filters
		// the group which we currently work with
		GroupedFilterList::iterator aCurrentGroup = _rAllFilters.end(); // no current group
		// the filter container of the current group - if this changes between two filters, a new group is reached
		String aCurrentServiceName;

		String sFilterWildcard;
		::rtl::OUString sFilterName;
		// loop through all the filters
		for ( const SfxFilter* pFilter = _rFilterMatcher.First(); pFilter; pFilter = _rFilterMatcher.Next() )
		{
            sFilterName = pFilter->GetFilterName();
			sFilterWildcard = pFilter->GetWildcard().GetWildCard();
			AppendWildcardToDescriptor aExtendWildcard( sFilterWildcard );

			DBG_ASSERT( sFilterWildcard.Len(), "sfx2::lcl_GroupAndClassify: invalid wildcard of this filter!" );

            // ===========================================================
			// check for a change in the group
			String aServiceName = pFilter->GetServiceName();
			if ( aServiceName != aCurrentServiceName )
			{	// we reached a new group

				::rtl::OUString sDocServName = aServiceName;

				// look for the place in _rAllFilters where this ne group belongs - this is determined
				// by the order of classes in aGlobalClassNames
				GroupedFilterList::iterator aGroupPos = _rAllFilters.begin();
				DBG_ASSERT( aGroupPos != _rAllFilters.end(),
					"sfx2::lcl_GroupAndClassify: invalid all-filters array here!" );
					// the loop below will work on invalid objects else ...
				++aGroupPos;
				StringArray::iterator aGlobalIter = aGlobalClassNames.begin();
				while	(	( aGroupPos != _rAllFilters.end() )
						&&  ( aGlobalIter != aGlobalClassNames.end() )
						&&	( *aGlobalIter != sDocServName )
						)
				{
					++aGlobalIter;
					++aGroupPos;
				}
				if ( aGroupPos != _rAllFilters.end() )
					// we found a global class name which matchies the doc service name -> fill the filters of this
					// group in the respective prepared group
					aCurrentGroup = aGroupPos;
				else
					// insert a new entry in our overall-list
					aCurrentGroup = _rAllFilters.insert( _rAllFilters.end(), FilterGroup() );

				// remember the container to properly detect the next group
				aCurrentServiceName = aServiceName;
			}

			DBG_ASSERT( aCurrentGroup != _rAllFilters.end(), "sfx2::lcl_GroupAndClassify: invalid current group!" );

            // ===========================================================
			// check if the filter is part of a global group
			::std::pair< FilterGroupEntryReferrer::iterator, FilterGroupEntryReferrer::iterator >
				aBelongsTo = aGlobalClassesRef.equal_range( sFilterName );
			// add the filter to the entries for these classes
			// (if they exist - if not, the range is empty and the for_each is a no-op)
			::std::for_each(
				aBelongsTo.first,
				aBelongsTo.second,
				aExtendWildcard
			);

            // ===========================================================
			// add the filter to it's group

			// for this, check if the filter is part of a local filter
			FilterGroupEntryReferrer::iterator aBelongsToLocal = aLocalClassesRef.find( sFilterName );
			if ( aLocalClassesRef.end() != aBelongsToLocal )
			{
/*
#ifdef DBG_UTIL
				const ::rtl::OUString& rLocalClassDisplayName = aBelongsToLocal->second->First;
				const ::rtl::OUString& rLocalClassExtension = aBelongsToLocal->second->Second;
#endif
*/
				// okay, there is a local class which the filter belongs to
				// -> append the wildcard
				aExtendWildcard( *aBelongsToLocal );

				MapGroupEntry2GroupEntry::iterator aThisGroupFinalPos =
					::std::find_if( aLocalFinalPositions.begin(), aLocalFinalPositions.end(), FindGroupEntry( aBelongsToLocal->second ) );

				if ( aLocalFinalPositions.end() == aThisGroupFinalPos )
				{	// the position within aCollectedLocals has not been mapped to a final position
					// within the "real" group (aCollectedLocals is only temporary)
					// -> do this now (as we just encountered the first filter belonging to this local class
					// add a new entry which is the "real" group entry
					aCurrentGroup->push_back( FilterDescriptor( aBelongsToLocal->second->First, String() ) );
					// the position where we inserted the entry
					FilterGroup::iterator aInsertPos = aCurrentGroup->end();
					--aInsertPos;
					// remember this pos
					aLocalFinalPositions.push_back( MapGroupEntry2GroupEntry::value_type( aBelongsToLocal->second, aInsertPos ) );
				}
			}
			else
				aCurrentGroup->push_back( FilterDescriptor( pFilter->GetUIName(), sFilterWildcard ) );
		}

		// now just complete the infos for the local groups:
		// During the above loop, they have been collected in aCollectedLocals, but this is only temporary
		// They have to be copied into their final positions (which are stored in aLocalFinalPositions)
		::std::for_each(
			aLocalFinalPositions.begin(),
			aLocalFinalPositions.end(),
			CopyGroupEntryContent()
		);

		// and remove local groups which do not apply - e.g. have no entries due to the limited content of the
		// current SfxFilterMatcherIter

		FilterGroup& rGlobalFilters = _rAllFilters.front();
		FilterGroup aNonEmptyGlobalFilters;
		::std::for_each(
			rGlobalFilters.begin(),
			rGlobalFilters.end(),
			CopyNonEmptyFilter( aNonEmptyGlobalFilters )
		);
		rGlobalFilters.swap( aNonEmptyGlobalFilters );
	}

	//--------------------------------------------------------------------
	struct AppendFilter : public ::std::unary_function< FilterDescriptor, void >
	{
		protected:
			Reference< XFilterManager > 		m_xFilterManager;
			FileDialogHelper_Impl*				m_pFileDlgImpl;
			bool								m_bAddExtension;

		public:
			AppendFilter( const Reference< XFilterManager >& _rxFilterManager,
						  FileDialogHelper_Impl* _pImpl, bool _bAddExtension ) :

				m_xFilterManager( _rxFilterManager ),
				m_pFileDlgImpl	( _pImpl ),
				m_bAddExtension	( _bAddExtension )

			{
				DBG_ASSERT( m_xFilterManager.is(), "AppendFilter::AppendFilter: invalid filter manager!" );
				DBG_ASSERT( m_pFileDlgImpl, "AppendFilter::AppendFilter: invalid filedlg impl!" );
			}

			// operate on a single filter
			void operator() ( const FilterDescriptor& _rFilterEntry )
			{
				String sDisplayText = m_bAddExtension
					? addExtension( _rFilterEntry.First, _rFilterEntry.Second, sal_True, *m_pFileDlgImpl )
					: _rFilterEntry.First;
				m_xFilterManager->appendFilter( sDisplayText, _rFilterEntry.Second );
			}
	};

// =======================================================================
// = handling for the "all files" entry
// =======================================================================

	//--------------------------------------------------------------------
	sal_Bool lcl_hasAllFilesFilter( TSortedFilterList& _rFilterMatcher, String& /* [out] */ _rAllFilterName )
	{
		::rtl::OUString sUIName;
		sal_Bool		bHasAll = sal_False;
		_rAllFilterName = String( SfxResId( STR_SFX_FILTERNAME_ALL ) );

        // ===============================================================
		// check if there's already a filter <ALL>
		for ( const SfxFilter* pFilter = _rFilterMatcher.First(); pFilter && !bHasAll; pFilter = _rFilterMatcher.Next() )
		{
			if ( pFilter->GetUIName() == _rAllFilterName )
				bHasAll = sal_True;
		}
		return bHasAll;
	}

	//--------------------------------------------------------------------
	void lcl_EnsureAllFilesEntry( TSortedFilterList& _rFilterMatcher, GroupedFilterList& _rFilters )
	{
        // ===============================================================
		String sAllFilterName;
		if ( !lcl_hasAllFilesFilter( _rFilterMatcher, sAllFilterName ) )
		{
			// get the first group of filters (by definition, this group contains the global classes)
			DBG_ASSERT( !_rFilters.empty(), "lcl_EnsureAllFilesEntry: invalid filter list!" );
			if ( !_rFilters.empty() )
			{
				FilterGroup& rGlobalClasses = *_rFilters.begin();
				rGlobalClasses.push_front( FilterDescriptor( sAllFilterName, DEFINE_CONST_UNICODE( FILEDIALOG_FILTER_ALL ) ) );
			}
		}
	}

#ifdef DISABLE_GROUPING_AND_CLASSIFYING
	//--------------------------------------------------------------------
	void lcl_EnsureAllFilesEntry( TSortedFilterList& _rFilterMatcher, const Reference< XFilterManager >& _rxFilterManager, ::rtl::OUString& _rFirstNonEmpty )
	{
        // ===============================================================
		String sAllFilterName;
		if ( !lcl_hasAllFilesFilter( _rFilterMatcher, sAllFilterName ) )
		{
			try
			{
				_rxFilterManager->appendFilter( sAllFilterName, DEFINE_CONST_UNICODE( FILEDIALOG_FILTER_ALL ) );
				_rFirstNonEmpty = sAllFilterName;
			}
			catch( const IllegalArgumentException& )
			{
#ifdef DBG_UTIL
				ByteString aMsg( "sfx2::lcl_EnsureAllFilesEntry: could not append Filter" );
				aMsg += ByteString( String( sAllFilterName ), RTL_TEXTENCODING_UTF8 );
				DBG_ERROR( aMsg.GetBuffer() );
#endif
			}
		}

	}
#endif

// =======================================================================
// = filling an XFilterManager
// =======================================================================

	//--------------------------------------------------------------------
	struct AppendFilterGroup : public ::std::unary_function< FilterGroup, void >
	{
	protected:
		Reference< XFilterManager > 		m_xFilterManager;
		Reference< XFilterGroupManager >	m_xFilterGroupManager;
		FileDialogHelper_Impl*				m_pFileDlgImpl;

	public:
		AppendFilterGroup( const Reference< XFilterManager >& _rxFilterManager, FileDialogHelper_Impl* _pImpl )
			:m_xFilterManager		( _rxFilterManager )
			,m_xFilterGroupManager	( _rxFilterManager, UNO_QUERY )
			,m_pFileDlgImpl			( _pImpl )
		{
			DBG_ASSERT( m_xFilterManager.is(), "AppendFilterGroup::AppendFilterGroup: invalid filter manager!" );
			DBG_ASSERT( m_pFileDlgImpl, "AppendFilterGroup::AppendFilterGroup: invalid filedlg impl!" );
		}

		void appendGroup( const FilterGroup& _rGroup, bool _bAddExtension )
		{
			try
			{
				if ( m_xFilterGroupManager.is() )
				{	// the file dialog implementation supports visual grouping of filters
					// create a representation of the group which is understandable by the XFilterGroupManager
					if ( _rGroup.size() )
					{
						Sequence< StringPair > aFilters( _rGroup.size() );
						::std::copy(
							_rGroup.begin(),
							_rGroup.end(),
							aFilters.getArray()
						);
						if ( _bAddExtension )
						{
							StringPair* pFilters = aFilters.getArray();
							StringPair* pEnd = pFilters + aFilters.getLength();
							for ( ; pFilters != pEnd; ++pFilters )
								pFilters->First = addExtension( pFilters->First, pFilters->Second, sal_True, *m_pFileDlgImpl );
						}
						m_xFilterGroupManager->appendFilterGroup( ::rtl::OUString(), aFilters );
					}
				}
				else
				{
					::std::for_each(
						_rGroup.begin(),
						_rGroup.end(),
						AppendFilter( m_xFilterManager, m_pFileDlgImpl, _bAddExtension ) );
				}
			}
			catch( const Exception& )
			{
                DBG_UNHANDLED_EXCEPTION();
			}
		}

		// operate on a single filter group
		void operator() ( const FilterGroup& _rGroup )
		{
			appendGroup( _rGroup, true );
		}
	};

	//--------------------------------------------------------------------
    TSortedFilterList::TSortedFilterList(const ::com::sun::star::uno::Reference< ::com::sun::star::container::XEnumeration >& xFilterList)
        : m_nIterator(0)
    {
        if (!xFilterList.is())
            return;

        m_lFilters.clear();
        while(xFilterList->hasMoreElements())
        {
            ::comphelper::SequenceAsHashMap lFilterProps (xFilterList->nextElement());
            ::rtl::OUString                 sFilterName  = lFilterProps.getUnpackedValueOrDefault(
                                                             ::rtl::OUString::createFromAscii("Name"),
                                                             ::rtl::OUString());
            if (sFilterName.getLength())
                m_lFilters.push_back(sFilterName);
        }
    }

	//--------------------------------------------------------------------
    const SfxFilter* TSortedFilterList::First()
    {
        m_nIterator = 0;
        return impl_getFilter(m_nIterator);
    }

	//--------------------------------------------------------------------
    const SfxFilter* TSortedFilterList::Next()
    {
        ++m_nIterator;
        return impl_getFilter(m_nIterator);
    }

	//--------------------------------------------------------------------
    const SfxFilter* TSortedFilterList::impl_getFilter(sal_Int32 nIndex)
    {
        if (nIndex<0 || nIndex>=(sal_Int32)m_lFilters.size())
            return 0;
        const ::rtl::OUString& sFilterName = m_lFilters[nIndex];
        if (!sFilterName.getLength())
            return 0;
        return SfxFilter::GetFilterByName(String(sFilterName));
    }

	//--------------------------------------------------------------------
	void appendFiltersForSave( TSortedFilterList& _rFilterMatcher,
							   const Reference< XFilterManager >& _rxFilterManager,
							   ::rtl::OUString& _rFirstNonEmpty, FileDialogHelper_Impl& _rFileDlgImpl,
                               const ::rtl::OUString& _rFactory )
	{
		DBG_ASSERT( _rxFilterManager.is(), "sfx2::appendFiltersForSave: invalid manager!" );
		if ( !_rxFilterManager.is() )
			return;

		::rtl::OUString sUIName;
        ::rtl::OUString sExtension;

        // retrieve the default filter for this application module.
        // It must be set as first of the generated filter list.
        const SfxFilter* pDefaultFilter = SfxFilterContainer::GetDefaultFilter_Impl(_rFactory);
        // --> PB 2004-11-01 #i32434# only use one extension
        // (and always the first if there are more than one)
        sExtension = pDefaultFilter->GetWildcard().GetWildCard().GetToken( 0, ';' );
        // <--
        sUIName = addExtension( pDefaultFilter->GetUIName(), sExtension, sal_False, _rFileDlgImpl );
        try
        {
            _rxFilterManager->appendFilter( sUIName, sExtension );
            if ( !_rFirstNonEmpty.getLength() )
                _rFirstNonEmpty = sUIName;
        }
        catch( IllegalArgumentException )
        {
#ifdef DBG_UTIL
            ByteString aMsg( "Could not append DefaultFilter" );
            aMsg += ByteString( String( sUIName ), osl_getThreadTextEncoding() );
            DBG_ERRORFILE( aMsg.GetBuffer() );
#endif
        }

		for ( const SfxFilter* pFilter = _rFilterMatcher.First(); pFilter; pFilter = _rFilterMatcher.Next() )
		{
            if (pFilter->GetName() == pDefaultFilter->GetName())
                continue;

            // --> PB 2004-09-21 #i32434# only use one extension
            // (and always the first if there are more than one)
            sExtension = pFilter->GetWildcard().GetWildCard().GetToken( 0, ';' );
            // <--
			sUIName = addExtension( pFilter->GetUIName(), sExtension, sal_False, _rFileDlgImpl );
			try
			{
				_rxFilterManager->appendFilter( sUIName, sExtension );
				if ( !_rFirstNonEmpty.getLength() )
					_rFirstNonEmpty = sUIName;
			}
			catch( IllegalArgumentException )
			{
	#ifdef DBG_UTIL
				ByteString aMsg( "Could not append Filter" );
				aMsg += ByteString( String( sUIName ), osl_getThreadTextEncoding() );
				DBG_ERRORFILE( aMsg.GetBuffer() );
	#endif
			}
		}
	}

	struct ExportFilter
	{
		ExportFilter( const rtl::OUString& _aUIName, const rtl::OUString& _aWildcard ) :
			aUIName( _aUIName ), aWildcard( _aWildcard ) {}

		rtl::OUString aUIName;
		rtl::OUString aWildcard;
	};

	//--------------------------------------------------------------------
	void appendExportFilters( TSortedFilterList& _rFilterMatcher,
							  const Reference< XFilterManager >& _rxFilterManager,
							  ::rtl::OUString& _rFirstNonEmpty, FileDialogHelper_Impl& _rFileDlgImpl )
	{
		DBG_ASSERT( _rxFilterManager.is(), "sfx2::appendExportFilters: invalid manager!" );
		if ( !_rxFilterManager.is() )
			return;

        sal_Int32                           nHTMLIndex  = -1;
        sal_Int32                           nXHTMLIndex  = -1;
        sal_Int32                           nPDFIndex   = -1;
		sal_Int32							nFlashIndex = -1;
		::rtl::OUString						sUIName;
		::rtl::OUString						sExtensions;
		std::vector< ExportFilter >			aImportantFilterGroup;
		std::vector< ExportFilter >			aFilterGroup;
		Reference< XFilterGroupManager >	xFilterGroupManager( _rxFilterManager, UNO_QUERY );
        ::rtl::OUString                     sTypeName;
        const ::rtl::OUString               sWriterHTMLType( DEFINE_CONST_OUSTRING("writer_web_HTML") );
        const ::rtl::OUString               sGraphicHTMLType( DEFINE_CONST_OUSTRING("graphic_HTML") );
        const ::rtl::OUString               sXHTMLType( DEFINE_CONST_OUSTRING("XHTML_File") );
        const ::rtl::OUString               sPDFType( DEFINE_CONST_OUSTRING("pdf_Portable_Document_Format") );
        const ::rtl::OUString               sFlashType( DEFINE_CONST_OUSTRING("graphic_SWF") );

		for ( const SfxFilter* pFilter = _rFilterMatcher.First(); pFilter; pFilter = _rFilterMatcher.Next() )
		{
            sTypeName   = pFilter->GetTypeName();
			sUIName		= pFilter->GetUIName();
			sExtensions = pFilter->GetWildcard().GetWildCard();
			ExportFilter aExportFilter( sUIName, sExtensions );
			String aExt = sExtensions;

            if ( nHTMLIndex == -1 &&
                ( sTypeName.equals( sWriterHTMLType ) || sTypeName.equals( sGraphicHTMLType ) ) )
            {
                aImportantFilterGroup.insert( aImportantFilterGroup.begin(), aExportFilter );
                nHTMLIndex = 0;
            }
            else if ( nXHTMLIndex == -1 && sTypeName.equals( sXHTMLType ) )
            {
                std::vector< ExportFilter >::iterator aIter = aImportantFilterGroup.begin();
                if ( nHTMLIndex == -1 )
                    aImportantFilterGroup.insert( aIter, aExportFilter );
                else
                    aImportantFilterGroup.insert( ++aIter, aExportFilter );
                nXHTMLIndex = 0;
            }
            else if ( nPDFIndex == -1 && sTypeName.equals( sPDFType ) )
			{
                std::vector< ExportFilter >::iterator aIter = aImportantFilterGroup.begin();
                if ( nHTMLIndex != -1 )
                    aIter++;
                if ( nXHTMLIndex != -1 )
                    aIter++;
                aImportantFilterGroup.insert( aIter, aExportFilter );
				nPDFIndex = 0;
			}
            else if ( nFlashIndex == -1 && sTypeName.equals( sFlashType ) )
			{
				std::vector< ExportFilter >::iterator aIter = aImportantFilterGroup.begin();
                if ( nHTMLIndex != -1 )
                    aIter++;
                if ( nXHTMLIndex != -1 )
                    aIter++;
				if ( nPDFIndex != -1 )
					aIter++;
				aImportantFilterGroup.insert( aIter, aExportFilter );
				nFlashIndex = 0;
			}
			else
				aFilterGroup.push_back( aExportFilter );
		}

		if ( xFilterGroupManager.is() )
		{
			// Add both html/pdf filter as a filter group to get a separator between both groups
			if ( aImportantFilterGroup.size() > 0 )
			{
				Sequence< StringPair > aFilters( aImportantFilterGroup.size() );
				for ( sal_Int32 i = 0; i < (sal_Int32)aImportantFilterGroup.size(); i++ )
				{
					aFilters[i].First	= addExtension( aImportantFilterGroup[i].aUIName,
														aImportantFilterGroup[i].aWildcard,
														sal_False, _rFileDlgImpl );
					aFilters[i].Second	= aImportantFilterGroup[i].aWildcard;
				}

				try
				{
					xFilterGroupManager->appendFilterGroup( ::rtl::OUString(), aFilters );
				}
				catch( IllegalArgumentException )
				{
				}
			}

			if ( aFilterGroup.size() > 0 )
			{
				Sequence< StringPair > aFilters( aFilterGroup.size() );
				for ( sal_Int32 i = 0; i < (sal_Int32)aFilterGroup.size(); i++ )
				{
					aFilters[i].First	= addExtension( aFilterGroup[i].aUIName,
														aFilterGroup[i].aWildcard,
														sal_False, _rFileDlgImpl );
					aFilters[i].Second	= aFilterGroup[i].aWildcard;
				}

				try
				{
					xFilterGroupManager->appendFilterGroup( ::rtl::OUString(), aFilters );
				}
				catch( IllegalArgumentException )
				{
				}
			}
		}
		else
		{
			// Fallback solution just add both filter groups as single filters
			sal_Int32 n;

			for ( n = 0; n < (sal_Int32)aImportantFilterGroup.size(); n++ )
			{
				try
				{
					rtl::OUString aUIName = addExtension( aImportantFilterGroup[n].aUIName,
														  aImportantFilterGroup[n].aWildcard,
														  sal_False, _rFileDlgImpl );
					_rxFilterManager->appendFilter( aUIName, aImportantFilterGroup[n].aWildcard  );
					if ( !_rFirstNonEmpty.getLength() )
						_rFirstNonEmpty = sUIName;

				}
				catch( IllegalArgumentException )
				{
		#ifdef DBG_UTIL
					ByteString aMsg( "Could not append Filter" );
					aMsg += ByteString( String( sUIName ), osl_getThreadTextEncoding() );
					DBG_ERRORFILE( aMsg.GetBuffer() );
		#endif
				}
			}

			for ( n = 0; n < (sal_Int32)aFilterGroup.size(); n++ )
			{
				try
				{
					rtl::OUString aUIName = addExtension( aFilterGroup[n].aUIName,
														  aFilterGroup[n].aWildcard,
														  sal_False, _rFileDlgImpl );
					_rxFilterManager->appendFilter( aUIName, aFilterGroup[n].aWildcard );
					if ( !_rFirstNonEmpty.getLength() )
						_rFirstNonEmpty = sUIName;

				}
				catch( IllegalArgumentException )
				{
		#ifdef DBG_UTIL
					ByteString aMsg( "Could not append Filter" );
					aMsg += ByteString( String( sUIName ), osl_getThreadTextEncoding() );
					DBG_ERRORFILE( aMsg.GetBuffer() );
		#endif
				}
			}
		}
	}

	//--------------------------------------------------------------------
	void appendFiltersForOpen( TSortedFilterList& _rFilterMatcher,
							   const Reference< XFilterManager >& _rxFilterManager,
							   ::rtl::OUString& _rFirstNonEmpty, FileDialogHelper_Impl& _rFileDlgImpl )
	{
		DBG_ASSERT( _rxFilterManager.is(), "sfx2::appendFiltersForOpen: invalid manager!" );
		if ( !_rxFilterManager.is() )
			return;

#ifdef DISABLE_GROUPING_AND_CLASSIFYING
        // ===============================================================
		// ensure that there's an entry "all" (with wildcard *.*)
		lcl_EnsureAllFilesEntry( _rFilterMatcher, _rxFilterManager, _rFirstNonEmpty );

        // ===============================================================
		appendFilters( _rFilterMatcher, _rxFilterManager, _rFirstNonEmpty );
#else

        // ===============================================================
		// group and classify the filters
		GroupedFilterList aAllFilters;
		lcl_GroupAndClassify( _rFilterMatcher, aAllFilters );

        // ===============================================================
		// ensure that we have the one "all files" entry
		lcl_EnsureAllFilesEntry( _rFilterMatcher, aAllFilters );

        // ===============================================================
		// the first non-empty string - which we assume is the first overall entry
		if ( !aAllFilters.empty() )
		{
			const FilterGroup& rFirstGroup = *aAllFilters.begin();	// should be the global classes
			if ( !rFirstGroup.empty() )
				_rFirstNonEmpty = rFirstGroup.begin()->First;
			// append first group, without extension
			AppendFilterGroup aGroup( _rxFilterManager, &_rFileDlgImpl );
			aGroup.appendGroup( rFirstGroup, false );
		}

        // ===============================================================
		// append the filters to the manager
		if ( !aAllFilters.empty() )
		{
			::std::list< FilterGroup >::iterator pIter = aAllFilters.begin();
			++pIter;
			::std::for_each(
				pIter, // first filter group was handled seperately, see above
				aAllFilters.end(),
				AppendFilterGroup( _rxFilterManager, &_rFileDlgImpl ) );
		}
#endif
	}

	::rtl::OUString addExtension( const ::rtl::OUString& _rDisplayText,
								  const ::rtl::OUString& _rExtension,
								  sal_Bool _bForOpen, FileDialogHelper_Impl& _rFileDlgImpl )
	{
		static ::rtl::OUString sAllFilter( RTL_CONSTASCII_USTRINGPARAM( "(*.*)" ) );
		static ::rtl::OUString sOpenBracket( RTL_CONSTASCII_USTRINGPARAM( " (" ) );
		static ::rtl::OUString sCloseBracket( RTL_CONSTASCII_USTRINGPARAM( ")" ) );
		::rtl::OUString sRet = _rDisplayText;

		if ( sRet.indexOf( sAllFilter ) == -1 )
		{
			String sExt = _rExtension;
			if ( !_bForOpen )
				// show '*' in extensions only when opening a document
				sExt.EraseAllChars( '*' );
			sRet += sOpenBracket;
			sRet += sExt;
			sRet += sCloseBracket;
		}
		_rFileDlgImpl.addFilterPair( _rDisplayText, sRet );
		return sRet;
	}

//........................................................................
}	// namespace sfx2
//........................................................................