xref: /trunk/main/embeddedobj/source/msole/ownview.cxx (revision cdf0e10c4e3984b49a9502b011690b615761d4a3)
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27 
28 // MARKER(update_precomp.py): autogen include statement, do not remove
29 #include "precompiled_embeddedobj.hxx"
30 #include <com/sun/star/frame/XFrame.hpp>
31 #include <com/sun/star/frame/XController.hpp>
32 #include <com/sun/star/frame/XComponentLoader.hpp>
33 #include <com/sun/star/awt/XTopWindow.hpp>
34 #include <com/sun/star/embed/XClassifiedObject.hpp>
35 #include <com/sun/star/io/XStream.hpp>
36 #include <com/sun/star/io/XInputStream.hpp>
37 #include <com/sun/star/io/XOutputStream.hpp>
38 #include <com/sun/star/io/XSeekable.hpp>
39 #include <com/sun/star/task/XInteractionHandler.hpp>
40 #include <com/sun/star/ucb/XSimpleFileAccess.hpp>
41 #include <com/sun/star/util/XCloseable.hpp>
42 #include <com/sun/star/beans/XPropertySet.hpp>
43 
44 #ifndef _COM_SUN_STAR_DOCUMENT_XEVENTBRODCASTER_HPP_
45 #include <com/sun/star/document/XEventBroadcaster.hpp>
46 #endif
47 #include <com/sun/star/document/XEventListener.hpp>
48 #include <com/sun/star/document/XTypeDetection.hpp>
49 #include <com/sun/star/container/XNameAccess.hpp>
50 #include <cppuhelper/implbase1.hxx>
51 #include <comphelper/storagehelper.hxx>
52 #include <comphelper/mimeconfighelper.hxx>
53 
54 #include "ownview.hxx"
55 
56 
57 using namespace ::com::sun::star;
58 using namespace ::comphelper;
59 
60 ::rtl::OUString GetNewTempFileURL_Impl( const uno::Reference< lang::XMultiServiceFactory >& xFactory ) throw( io::IOException );
61 ::rtl::OUString GetNewFilledTempFile_Impl( const uno::Reference< io::XInputStream >& xInStream, const uno::Reference< lang::XMultiServiceFactory >& xFactory ) throw( io::IOException );
62 sal_Bool KillFile_Impl( const ::rtl::OUString& aURL, const uno::Reference< lang::XMultiServiceFactory >& xFactory );
63 uno::Reference< io::XStream > TryToGetAcceptableFormat_Impl( const uno::Reference< io::XStream >& xStream, const uno::Reference< lang::XMultiServiceFactory >& xFactory ) throw ( uno::Exception );
64 
65 //========================================================
66 // Dummy interaction handler
67 //========================================================
68 //--------------------------------------------------------
69 class DummyHandler_Impl : public ::cppu::WeakImplHelper1< task::XInteractionHandler >
70 {
71 public:
72     DummyHandler_Impl() {}
73     ~DummyHandler_Impl();
74 
75     virtual void SAL_CALL handle( const uno::Reference< task::XInteractionRequest >& xRequest )
76             throw( uno::RuntimeException );
77 };
78 
79 //--------------------------------------------------------
80 DummyHandler_Impl::~DummyHandler_Impl()
81 {
82 }
83 
84 //--------------------------------------------------------
85 void SAL_CALL DummyHandler_Impl::handle( const uno::Reference< task::XInteractionRequest >& )
86         throw( uno::RuntimeException )
87 {
88     return;
89 }
90 
91 //========================================================
92 // Object viewer
93 //========================================================
94 //--------------------------------------------------------
95 OwnView_Impl::OwnView_Impl( const uno::Reference< lang::XMultiServiceFactory >& xFactory,
96                             const uno::Reference< io::XInputStream >& xInputStream )
97 : m_xFactory( xFactory )
98 , m_bBusy( sal_False )
99 , m_bUseNative( sal_False )
100 {
101     if ( !xFactory.is() || !xInputStream.is() )
102         throw uno::RuntimeException();
103 
104     m_aTempFileURL = GetNewFilledTempFile_Impl( xInputStream, m_xFactory );
105 }
106 
107 //--------------------------------------------------------
108 OwnView_Impl::~OwnView_Impl()
109 {
110     try {
111         KillFile_Impl( m_aTempFileURL, m_xFactory );
112     } catch( uno::Exception& ) {}
113 
114     try {
115         if ( m_aNativeTempURL.getLength() )
116             KillFile_Impl( m_aNativeTempURL, m_xFactory );
117     } catch( uno::Exception& ) {}
118 }
119 
120 //--------------------------------------------------------
121 sal_Bool OwnView_Impl::CreateModelFromURL( const ::rtl::OUString& aFileURL )
122 {
123     sal_Bool bResult = sal_False;
124 
125     if ( aFileURL.getLength() )
126     {
127         try {
128             uno::Reference < frame::XComponentLoader > xDocumentLoader(
129                             m_xFactory->createInstance (
130                                         ::rtl::OUString::createFromAscii( "com.sun.star.frame.Desktop" ) ),
131                             uno::UNO_QUERY );
132 
133             if ( xDocumentLoader.is() )
134             {
135                 uno::Sequence< beans::PropertyValue > aArgs( m_aFilterName.getLength() ? 5 : 4 );
136 
137                 aArgs[0].Name = ::rtl::OUString::createFromAscii( "URL" );
138                 aArgs[0].Value <<= aFileURL;
139 
140                 aArgs[1].Name = ::rtl::OUString::createFromAscii( "ReadOnly" );
141                 aArgs[1].Value <<= sal_True;
142 
143                 aArgs[2].Name = ::rtl::OUString::createFromAscii( "InteractionHandler" );
144                 aArgs[2].Value <<= uno::Reference< task::XInteractionHandler >(
145                                     static_cast< ::cppu::OWeakObject* >( new DummyHandler_Impl() ), uno::UNO_QUERY );
146 
147                 aArgs[3].Name = ::rtl::OUString::createFromAscii( "DontEdit" );
148                 aArgs[3].Value <<= sal_True;
149 
150                 if ( m_aFilterName.getLength() )
151                 {
152                     aArgs[4].Name = ::rtl::OUString::createFromAscii( "FilterName" );
153                     aArgs[4].Value <<= m_aFilterName;
154                 }
155 
156                 uno::Reference< frame::XModel > xModel( xDocumentLoader->loadComponentFromURL(
157                                                                 aFileURL,
158                                                                 ::rtl::OUString::createFromAscii( "_blank" ),
159                                                                 0,
160                                                                 aArgs ),
161                                                             uno::UNO_QUERY );
162 
163                 if ( xModel.is() )
164                 {
165                     uno::Reference< document::XEventBroadcaster > xBroadCaster( xModel, uno::UNO_QUERY );
166                     if ( xBroadCaster.is() )
167                         xBroadCaster->addEventListener( uno::Reference< document::XEventListener >(
168                                                                 static_cast< ::cppu::OWeakObject* >( this ),
169                                                                 uno::UNO_QUERY ) );
170 
171                     uno::Reference< util::XCloseable > xCloseable( xModel, uno::UNO_QUERY );
172                     if ( xCloseable.is() )
173                     {
174                         xCloseable->addCloseListener( uno::Reference< util::XCloseListener >(
175                                                                         static_cast< ::cppu::OWeakObject* >( this ),
176                                                                         uno::UNO_QUERY ) );
177 
178                         ::osl::MutexGuard aGuard( m_aMutex );
179                         m_xModel = xModel;
180                         bResult = sal_True;
181                     }
182                 }
183             }
184         }
185         catch( uno::Exception& )
186         {
187         }
188     }
189 
190     return bResult;
191 }
192 
193 //--------------------------------------------------------
194 sal_Bool OwnView_Impl::CreateModel( sal_Bool bUseNative )
195 {
196     sal_Bool bResult = sal_False;
197 
198     try {
199         bResult = CreateModelFromURL( bUseNative ? m_aNativeTempURL : m_aTempFileURL );
200     }
201     catch( uno::Exception& )
202     {
203     }
204 
205     return bResult;
206 }
207 
208 //--------------------------------------------------------
209 ::rtl::OUString OwnView_Impl::GetFilterNameFromExtentionAndInStream(
210                                                     const ::com::sun::star::uno::Reference< ::com::sun::star::lang::XMultiServiceFactory >& xFactory,
211                                                     const ::rtl::OUString& aNameWithExtention,
212                                                     const uno::Reference< io::XInputStream >& xInputStream )
213 {
214     if ( !xInputStream.is() )
215         throw uno::RuntimeException();
216 
217     uno::Reference< document::XTypeDetection > xTypeDetection(
218             xFactory->createInstance( ::rtl::OUString::createFromAscii( "com.sun.star.document.TypeDetection" ) ),
219             uno::UNO_QUERY_THROW );
220 
221     ::rtl::OUString aTypeName;
222 
223     if ( aNameWithExtention.getLength() )
224     {
225         ::rtl::OUString aURLToAnalyze =
226                 ( ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( "file:///" ) ) + aNameWithExtention );
227         aTypeName = xTypeDetection->queryTypeByURL( aURLToAnalyze );
228     }
229 
230     uno::Sequence< beans::PropertyValue > aArgs( aTypeName.getLength() ? 3 : 2 );
231     aArgs[0].Name = ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( "URL" ) );
232     aArgs[0].Value <<= ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( "private:stream" ) );
233     aArgs[1].Name = ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( "InputStream" ) );
234     aArgs[1].Value <<= xInputStream;
235     if ( aTypeName.getLength() )
236     {
237         aArgs[2].Name = ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( "TypeName" ) );
238         aArgs[2].Value <<= aTypeName;
239     }
240 
241     aTypeName = xTypeDetection->queryTypeByDescriptor( aArgs, sal_True );
242 
243     ::rtl::OUString aFilterName;
244     for ( sal_Int32 nInd = 0; nInd < aArgs.getLength(); nInd++ )
245         if ( aArgs[nInd].Name.equalsAscii( "FilterName" ) )
246             aArgs[nInd].Value >>= aFilterName;
247 
248     if ( !aFilterName.getLength() && aTypeName.getLength() )
249     {
250         // get the default filter name for the type
251         uno::Reference< container::XNameAccess > xNameAccess( xTypeDetection, uno::UNO_QUERY_THROW );
252         uno::Sequence< beans::PropertyValue > aTypes;
253 
254         if ( xNameAccess.is() && ( xNameAccess->getByName( aTypeName ) >>= aTypes ) )
255         {
256             for ( sal_Int32 nInd = 0; nInd < aTypes.getLength(); nInd++ )
257             {
258                 if ( aTypes[nInd].Name.equalsAscii( "PreferredFilter" ) && ( aTypes[nInd].Value >>= aFilterName ) )
259                 {
260                     aTypes[nInd].Value >>= aFilterName;
261                     break;
262                 }
263             }
264         }
265     }
266 
267     return aFilterName;
268 }
269 
270 //--------------------------------------------------------
271 sal_Bool OwnView_Impl::ReadContentsAndGenerateTempFile( const uno::Reference< io::XInputStream >& xInStream,
272                                                         sal_Bool bParseHeader )
273 {
274     uno::Reference< io::XSeekable > xSeekable( xInStream, uno::UNO_QUERY_THROW );
275     xSeekable->seek( 0 );
276 
277     // create m_aNativeTempURL
278     ::rtl::OUString aNativeTempURL;
279     uno::Reference < beans::XPropertySet > xNativeTempFile(
280             m_xFactory->createInstance( ::rtl::OUString::createFromAscii( "com.sun.star.io.TempFile" ) ),
281             uno::UNO_QUERY_THROW );
282     uno::Reference < io::XStream > xNativeTempStream( xNativeTempFile, uno::UNO_QUERY_THROW );
283     uno::Reference < io::XOutputStream > xNativeOutTemp = xNativeTempStream->getOutputStream();
284     uno::Reference < io::XInputStream > xNativeInTemp = xNativeTempStream->getInputStream();
285     if ( !xNativeOutTemp.is() || !xNativeInTemp.is() )
286         throw uno::RuntimeException();
287 
288     try {
289         xNativeTempFile->setPropertyValue( ::rtl::OUString::createFromAscii( "RemoveFile" ), uno::makeAny( sal_False ) );
290         uno::Any aUrl = xNativeTempFile->getPropertyValue( ::rtl::OUString::createFromAscii( "Uri" ) );
291         aUrl >>= aNativeTempURL;
292     }
293     catch ( uno::Exception& )
294     {
295     }
296 
297     sal_Bool bFailed = sal_False;
298     ::rtl::OUString aFileSuffix;
299 
300     if ( bParseHeader )
301     {
302         uno::Sequence< sal_Int8 > aReadSeq( 4 );
303         // read the complete size of the Object Package
304         if ( xInStream->readBytes( aReadSeq, 4 ) != 4 )
305             return sal_False;
306 /*
307         sal_uInt32 nLength = (sal_uInt8)aReadSeq[0]
308                             + (sal_uInt8)aReadSeq[1] * 0x100
309                             + (sal_uInt8)aReadSeq[2] * 0x10000
310                             + (sal_uInt8)aReadSeq[3] * 0x1000000;
311 */
312         // read the first header ( have no idea what does this header mean )
313         if ( xInStream->readBytes( aReadSeq, 2 ) != 2 || aReadSeq[0] != 2 || aReadSeq[1] != 0 )
314             return sal_False;
315 
316         // read file name
317         // only extension is interesting so only subset of symbols is accepted
318         do
319         {
320             if ( xInStream->readBytes( aReadSeq, 1 ) != 1 )
321                 return sal_False;
322 
323             if (
324                 (aReadSeq[0] >= '0' && aReadSeq[0] <= '9') ||
325                 (aReadSeq[0] >= 'a' && aReadSeq[0] <= 'z') ||
326                 (aReadSeq[0] >= 'A' && aReadSeq[0] <= 'Z') ||
327                 aReadSeq[0] == '.'
328                )
329             {
330                 aFileSuffix += ::rtl::OUString::valueOf( (sal_Unicode) aReadSeq[0] );
331             }
332 
333         } while( aReadSeq[0] );
334 
335         // skip url
336         do
337         {
338             if ( xInStream->readBytes( aReadSeq, 1 ) != 1 )
339                 return sal_False;
340         } while( aReadSeq[0] );
341 
342         // check the next header
343         if ( xInStream->readBytes( aReadSeq, 4 ) != 4
344         || aReadSeq[0] || aReadSeq[1] || aReadSeq[2] != 3 || aReadSeq[3] )
345             return sal_False;
346 
347         // get the size of the next entry
348         if ( xInStream->readBytes( aReadSeq, 4 ) != 4 )
349             return sal_False;
350 
351         sal_uInt32 nUrlSize = (sal_uInt8)aReadSeq[0]
352                             + (sal_uInt8)aReadSeq[1] * 0x100
353                             + (sal_uInt8)aReadSeq[2] * 0x10000
354                             + (sal_uInt8)aReadSeq[3] * 0x1000000;
355         sal_Int64 nTargetPos = xSeekable->getPosition() + nUrlSize;
356 
357         xSeekable->seek( nTargetPos );
358 
359         // get the size of stored data
360         if ( xInStream->readBytes( aReadSeq, 4 ) != 4 )
361             return sal_False;
362 
363         sal_uInt32 nDataSize = (sal_uInt8)aReadSeq[0]
364                             + (sal_uInt8)aReadSeq[1] * 0x100
365                             + (sal_uInt8)aReadSeq[2] * 0x10000
366                             + (sal_uInt8)aReadSeq[3] * 0x1000000;
367 
368         aReadSeq.realloc( 32000 );
369         sal_uInt32 nRead = 0;
370         while ( nRead < nDataSize )
371         {
372             sal_uInt32 nToRead = ( nDataSize - nRead > 32000 ) ? 32000 : nDataSize - nRead;
373             sal_uInt32 nLocalRead = xInStream->readBytes( aReadSeq, nToRead );
374 
375 
376             if ( !nLocalRead )
377             {
378                 bFailed = sal_True;
379                 break;
380             }
381             else if ( nLocalRead == 32000 )
382                 xNativeOutTemp->writeBytes( aReadSeq );
383             else
384             {
385                 uno::Sequence< sal_Int8 > aToWrite( aReadSeq );
386                 aToWrite.realloc( nLocalRead );
387                 xNativeOutTemp->writeBytes( aToWrite );
388             }
389 
390             nRead += nLocalRead;
391         }
392     }
393     else
394     {
395         uno::Sequence< sal_Int8 > aData( 8 );
396         if ( xInStream->readBytes( aData, 8 ) == 8
397           && aData[0] == -1 && aData[1] == -1 && aData[2] == -1 && aData[3] == -1
398           && ( aData[4] == 2 || aData[4] == 3 ) && aData[5] == 0 && aData[6] == 0 && aData[7] == 0 )
399         {
400             // the header has to be removed
401             xSeekable->seek( 40 );
402         }
403         else
404         {
405             // the usual Ole10Native format
406             xSeekable->seek( 4 );
407         }
408 
409         ::comphelper::OStorageHelper::CopyInputToOutput( xInStream, xNativeOutTemp );
410     }
411 
412     xNativeOutTemp->closeOutput();
413 
414     // The temporary native file is created, now the filter must be detected
415     if ( !bFailed )
416     {
417         m_aFilterName = GetFilterNameFromExtentionAndInStream( m_xFactory, aFileSuffix, xNativeInTemp );
418         m_aNativeTempURL = aNativeTempURL;
419     }
420 
421     return !bFailed;
422 }
423 
424 //--------------------------------------------------------
425 void OwnView_Impl::CreateNative()
426 {
427     if ( m_aNativeTempURL.getLength() )
428         return;
429 
430     try
431     {
432         uno::Reference < ucb::XSimpleFileAccess > xAccess(
433                 m_xFactory->createInstance (
434                         ::rtl::OUString::createFromAscii( "com.sun.star.ucb.SimpleFileAccess" ) ),
435                 uno::UNO_QUERY_THROW );
436 
437         uno::Reference< io::XInputStream > xInStream = xAccess->openFileRead( m_aTempFileURL );
438         if ( !xInStream.is() )
439             throw uno::RuntimeException();
440 
441         uno::Sequence< uno::Any > aArgs( 1 );
442         aArgs[0] <<= xInStream;
443         uno::Reference< container::XNameAccess > xNameAccess(
444                 m_xFactory->createInstanceWithArguments(
445                         ::rtl::OUString::createFromAscii( "com.sun.star.embed.OLESimpleStorage" ),
446                         aArgs ),
447                 uno::UNO_QUERY_THROW );
448 
449         ::rtl::OUString aSubStreamName = ::rtl::OUString::createFromAscii( "\1Ole10Native" );
450         uno::Reference< embed::XClassifiedObject > xStor( xNameAccess, uno::UNO_QUERY_THROW );
451         uno::Sequence< sal_Int8 > aStorClassID = xStor->getClassID();
452 
453         if ( xNameAccess->hasByName( aSubStreamName ) )
454         {
455             sal_uInt8 aClassID[] =
456                 { 0x00, 0x03, 0x00, 0x0C, 0x00, 0x00, 0x00, 0x00, 0xC0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x46 };
457             uno::Sequence< sal_Int8 > aPackageClassID( (sal_Int8*)aClassID, 16 );
458 
459             uno::Reference< io::XStream > xSubStream;
460             xNameAccess->getByName( aSubStreamName ) >>= xSubStream;
461             if ( xSubStream.is() )
462             {
463                 sal_Bool bOk = sal_False;
464 
465                 if ( MimeConfigurationHelper::ClassIDsEqual( aPackageClassID, aStorClassID ) )
466                 {
467                     // the storage represents Object Package
468 
469                     bOk = ReadContentsAndGenerateTempFile( xSubStream->getInputStream(), sal_True );
470 
471                     if ( !bOk && m_aNativeTempURL.getLength() )
472                     {
473                         KillFile_Impl( m_aNativeTempURL, m_xFactory );
474                         m_aNativeTempURL = ::rtl::OUString();
475                     }
476                 }
477 
478                 if ( !bOk )
479                 {
480                     bOk = ReadContentsAndGenerateTempFile( xSubStream->getInputStream(), sal_False );
481 
482                     if ( !bOk && m_aNativeTempURL.getLength() )
483                     {
484                         KillFile_Impl( m_aNativeTempURL, m_xFactory );
485                         m_aNativeTempURL = ::rtl::OUString();
486                     }
487                 }
488             }
489         }
490         else
491         {
492             // TODO/LATER: No native stream, needs a new solution
493         }
494     }
495     catch( uno::Exception& )
496     {}
497 }
498 
499 //--------------------------------------------------------
500 sal_Bool OwnView_Impl::Open()
501 {
502     sal_Bool bResult = sal_False;
503 
504     uno::Reference< frame::XModel > xExistingModel;
505 
506     {
507         ::osl::MutexGuard aGuard( m_aMutex );
508         xExistingModel = m_xModel;
509         if ( m_bBusy )
510             return sal_False;
511 
512         m_bBusy = sal_True;
513     }
514 
515     if ( xExistingModel.is() )
516     {
517         try {
518             uno::Reference< frame::XController > xController = xExistingModel->getCurrentController();
519             if ( xController.is() )
520             {
521                 uno::Reference< frame::XFrame > xFrame = xController->getFrame();
522                 if ( xFrame.is() )
523                 {
524                     xFrame->activate();
525                     uno::Reference<awt::XTopWindow> xTopWindow( xFrame->getContainerWindow(), uno::UNO_QUERY );
526                     if(xTopWindow.is())
527                         xTopWindow->toFront();
528 
529                     bResult = sal_True;
530                 }
531             }
532         }
533         catch( uno::Exception& )
534         {
535         }
536     }
537     else
538     {
539         bResult = CreateModel( m_bUseNative );
540 
541         if ( !bResult && !m_bUseNative )
542         {
543             // the original storage can not be recognized
544             if ( !m_aNativeTempURL.getLength() )
545             {
546                 // create a temporary file for the native representation if there is no
547                 CreateNative();
548             }
549 
550             if ( m_aNativeTempURL.getLength() )
551             {
552                 bResult = CreateModel( sal_True );
553                 if ( bResult )
554                     m_bUseNative = sal_True;
555             }
556         }
557     }
558 
559     m_bBusy = sal_False;
560 
561     return bResult;
562 }
563 
564 //--------------------------------------------------------
565 void OwnView_Impl::Close()
566 {
567     uno::Reference< frame::XModel > xModel;
568 
569     {
570         ::osl::MutexGuard aGuard( m_aMutex );
571         if ( !m_xModel.is() )
572             return;
573         xModel = m_xModel;
574         m_xModel = uno::Reference< frame::XModel >();
575 
576         if ( m_bBusy )
577             return;
578 
579         m_bBusy = sal_True;
580     }
581 
582     try {
583         uno::Reference< document::XEventBroadcaster > xBroadCaster( xModel, uno::UNO_QUERY );
584         if ( xBroadCaster.is() )
585             xBroadCaster->removeEventListener( uno::Reference< document::XEventListener >(
586                                                                     static_cast< ::cppu::OWeakObject* >( this ),
587                                                                     uno::UNO_QUERY ) );
588 
589         uno::Reference< util::XCloseable > xCloseable( xModel, uno::UNO_QUERY );
590         if ( xCloseable.is() )
591         {
592             xCloseable->removeCloseListener( uno::Reference< util::XCloseListener >(
593                                                                     static_cast< ::cppu::OWeakObject* >( this ),
594                                                                     uno::UNO_QUERY ) );
595             xCloseable->close( sal_True );
596         }
597     }
598     catch( uno::Exception& )
599     {}
600 
601     m_bBusy = sal_False;
602 }
603 
604 //--------------------------------------------------------
605 void SAL_CALL OwnView_Impl::notifyEvent( const document::EventObject& aEvent )
606         throw ( uno::RuntimeException )
607 {
608 
609     uno::Reference< frame::XModel > xModel;
610 
611     {
612         ::osl::MutexGuard aGuard( m_aMutex );
613         if ( aEvent.Source == m_xModel && aEvent.EventName.equalsAscii( "OnSaveAsDone" ) )
614         {
615             // SaveAs operation took place, so just forget the model and deregister listeners
616             xModel = m_xModel;
617             m_xModel = uno::Reference< frame::XModel >();
618         }
619     }
620 
621     if ( xModel.is() )
622     {
623         try {
624             uno::Reference< document::XEventBroadcaster > xBroadCaster( xModel, uno::UNO_QUERY );
625             if ( xBroadCaster.is() )
626                 xBroadCaster->removeEventListener( uno::Reference< document::XEventListener >(
627                                                                         static_cast< ::cppu::OWeakObject* >( this ),
628                                                                         uno::UNO_QUERY ) );
629 
630             uno::Reference< util::XCloseable > xCloseable( xModel, uno::UNO_QUERY );
631             if ( xCloseable.is() )
632                 xCloseable->removeCloseListener( uno::Reference< util::XCloseListener >(
633                                                                         static_cast< ::cppu::OWeakObject* >( this ),
634                                                                         uno::UNO_QUERY ) );
635         }
636         catch( uno::Exception& )
637         {}
638     }
639 }
640 
641 //--------------------------------------------------------
642 void SAL_CALL OwnView_Impl::queryClosing( const lang::EventObject&, sal_Bool )
643         throw ( util::CloseVetoException,
644                 uno::RuntimeException )
645 {
646 }
647 
648 //--------------------------------------------------------
649 void SAL_CALL OwnView_Impl::notifyClosing( const lang::EventObject& Source )
650         throw ( uno::RuntimeException )
651 {
652     ::osl::MutexGuard aGuard( m_aMutex );
653     if ( Source.Source == m_xModel )
654         m_xModel = uno::Reference< frame::XModel >();
655 }
656 
657 //--------------------------------------------------------
658 void SAL_CALL OwnView_Impl::disposing( const lang::EventObject& Source )
659         throw (uno::RuntimeException)
660 {
661     ::osl::MutexGuard aGuard( m_aMutex );
662     if ( Source.Source == m_xModel )
663         m_xModel = uno::Reference< frame::XModel >();
664 };
665 
666