consolidate the ugly code for getting SwDoc* to a function

I'm not quite sure why the code has to do it this complicated way,
but at least it's just in one (ok, two) places. Additionally, it
seems all those checks are needless paranoia, so just assert.

Change-Id: I9f0d4ecc5aec6995eb66ae553a4bd92cc5450b86

sw/source/filter/xml/xmlexp.cxx

@@ -88,6 +88,7 @@ SwXMLExport::SwXMLExport(
     pTableLines( 0 ),
     bBlock( sal_False ),
     bShowProgress( sal_True ),
+    doc( NULL ),
     sNumberFormat(RTL_CONSTASCII_USTRINGPARAM("NumberFormat")),
     sIsProtected(RTL_CONSTASCII_USTRINGPARAM("IsProtected")),
     sCell(RTL_CONSTASCII_USTRINGPARAM("Cell"))
@@ -108,13 +109,6 @@ sal_uInt32 SwXMLExport::exportDoc( enum XMLTokenEnum eClass )
 
     SwPauseThreadStarting aPauseThreadStarting; // #i73788#
 
-    Reference < XTextDocument > xTextDoc( GetModel(), UNO_QUERY );
-    Reference < XText > xText = xTextDoc->getText();
-    Reference<XUnoTunnel> xTextTunnel( xText, UNO_QUERY);
-    OSL_ENSURE( xTextTunnel.is(), "missing XUnoTunnel for Cursor" );
-    if( !xTextTunnel.is() )
-        return ERR_SWG_WRITE_ERROR;
-
     // from here, we use core interfaces -> lock Solar-Mutex
     SolarMutexGuard aGuard;
 
@@ -135,13 +129,7 @@ sal_uInt32 SwXMLExport::exportDoc( enum XMLTokenEnum eClass )
         }
     }
 
-    SwXText *pText = reinterpret_cast< SwXText * >(
-            sal::static_int_cast< sal_IntPtr >( xTextTunnel->getSomething( SwXText::getUnoTunnelId() )));
-    OSL_ENSURE( pText, "SwXText missing" );
-    if( !pText )
-        return ERR_SWG_WRITE_ERROR;
-
-    SwDoc *pDoc = pText->GetDoc();
+    SwDoc *pDoc = getDoc();
 
     sal_Bool bExtended = sal_False;
     if( (getExportFlags() & (EXPORT_FONTDECLS|EXPORT_STYLES|
@@ -377,30 +365,7 @@ void SwXMLExport::GetViewSettings(Sequence<PropertyValue>& aProps)
     pValue[nIndex].Name = OUString( RTL_CONSTASCII_USTRINGPARAM ( "Views") );
     pValue[nIndex++].Value <<= Reference < XIndexAccess > ( xBox, UNO_QUERY );
 
-    Reference < XText > xText;
-    SwXText *pText = 0;
-
-    if( GetModel().is() )
-    {
-        Reference < XTextDocument > xTextDoc( GetModel(), UNO_QUERY );
-        xText = xTextDoc->getText();
-        Reference<XUnoTunnel> xTextTunnel( xText, UNO_QUERY);
-        OSL_ENSURE( xTextTunnel.is(), "missing XUnoTunnel for Cursor" );
-        if( xTextTunnel.is() )
-        {
-            pText = reinterpret_cast< SwXText * >(
-                    sal::static_int_cast< sal_IntPtr >( xTextTunnel->getSomething( SwXText::getUnoTunnelId()) ));
-            OSL_ENSURE( pText, "SwXText missing" );
-        }
-    }
-
-    if( !pText )
-    {
-        aProps.realloc(nIndex);
-        return;
-    }
-
-    SwDoc *pDoc = pText->GetDoc();
+    SwDoc *pDoc = getDoc();
     const Rectangle rRect =
         pDoc->GetDocShell()->GetVisArea( ASPECT_CONTENT );
     sal_Bool bTwip = pDoc->GetDocShell()->GetMapUnit ( ) == MAP_TWIP;
@@ -476,21 +441,9 @@ sal_Int32 SwXMLExport::GetDocumentSpecificSettings( ::std::list< SettingsGroup >
 
 void SwXMLExport::SetBodyAttributes()
 {
-    Reference < XTextDocument > xTextDoc( GetModel(), UNO_QUERY );
-    Reference < XText > xText = xTextDoc->getText();
     // export use of soft page breaks
-    {
-        Reference<XUnoTunnel> xTextTunnel( xText, UNO_QUERY);
-        OSL_ENSURE( xTextTunnel.is(), "missing XUnoTunnel for Cursor" );
-        if( xTextTunnel.is() )
-        {
-            SwXText *pText = reinterpret_cast< SwXText * >(
-                    sal::static_int_cast< sal_IntPtr >( xTextTunnel->getSomething( SwXText::getUnoTunnelId() )));
-            OSL_ENSURE( pText, "SwXText missing" );
-            if( pText )
-            {
-                SwDoc *pDoc = pText->GetDoc();
-                if( pDoc && pDoc->GetCurrentViewShell() &&
+    SwDoc *pDoc = getDoc();
+    if( pDoc->GetCurrentViewShell() &&
         pDoc->GetCurrentViewShell()->GetPageCount() > 1 )
     {
         sal_Bool bValue = sal_True;
@@ -499,9 +452,6 @@ void SwXMLExport::SetBodyAttributes()
         AddAttribute(XML_NAMESPACE_TEXT, XML_USE_SOFT_PAGE_BREAKS,
             sBuffer.makeStringAndClear());
     }
-            }
-        }
-    }
 }
 
 
@@ -836,4 +786,25 @@ OUString SAL_CALL SwXMLExport::getImplementationName()
     }
 }
 
+SwDoc* SwXMLExport::getDoc()
+{
+    if( doc != NULL )
+        return doc;
+    Reference < XTextDocument > xTextDoc( GetModel(), UNO_QUERY );
+    Reference < XText > xText = xTextDoc->getText();
+    Reference<XUnoTunnel> xTextTunnel( xText, UNO_QUERY);
+    assert( xTextTunnel.is());
+    SwXText *pText = reinterpret_cast< SwXText *>(
+            sal::static_int_cast< sal_IntPtr >( xTextTunnel->getSomething( SwXText::getUnoTunnelId() )));
+    assert( pText != NULL );
+    doc = pText->GetDoc();
+    assert( doc != NULL );
+    return doc;
+}
+
+const SwDoc* SwXMLExport::getDoc() const
+{
+    return const_cast< SwXMLExport* >( this )->getDoc();
+}
+
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */

sw/source/filter/xml/xmlexp.hxx

@@ -26,6 +26,7 @@
 #include <xmloff/xmltoken.hxx>
 #include <vector>
 
+class SwDoc;
 class SwFmt;
 class SwFrmFmt;
 class SvXMLUnitConverter;
@@ -60,6 +61,8 @@ class SwXMLExport : public SvXMLExport
     sal_Bool                    bShowProgress : 1;
     sal_Bool                    bSavedShowChanges : 1;
 
+    SwDoc*                      doc; // cached for getDoc()
+
     void _InitItemExport();
     void _FinitItemExport();
     void ExportTableLinesAutoStyles( const SwTableLines& rLines,
@@ -144,6 +147,9 @@ public:
     // XServiceInfo (override parent method)
     ::rtl::OUString SAL_CALL getImplementationName()
         throw( ::com::sun::star::uno::RuntimeException );
+
+    const SwDoc* getDoc() const;
+    SwDoc* getDoc();
 };
 
 inline const SvXMLUnitConverter& SwXMLExport::GetTwipUnitConverter() const

sw/source/filter/xml/xmlfonte.cxx

@@ -46,20 +46,7 @@ SwXMLFontAutoStylePool_Impl::SwXMLFontAutoStylePool_Impl(
     sal_uInt16 aWhichIds[3] = { RES_CHRATR_FONT, RES_CHRATR_CJK_FONT,
                                 RES_CHRATR_CTL_FONT };
 
-    Reference < XTextDocument > xTextDoc( _rExport.GetModel(), UNO_QUERY );
-    Reference < XText > xText = xTextDoc->getText();
-    Reference<XUnoTunnel> xTextTunnel( xText, UNO_QUERY);
-    OSL_ENSURE( xTextTunnel.is(), "missing XUnoTunnel for Cursor" );
-    if( !xTextTunnel.is() )
-        return;
-
-    SwXText *pText = reinterpret_cast< SwXText *>(
-            sal::static_int_cast< sal_IntPtr >( xTextTunnel->getSomething( SwXText::getUnoTunnelId() )));
-    OSL_ENSURE( pText, "SwXText missing" );
-    if( !pText )
-        return;
-
-    const SfxItemPool& rPool = pText->GetDoc()->GetAttrPool();
+    const SfxItemPool& rPool = _rExport.getDoc()->GetAttrPool();
     const SfxPoolItem* pItem;
     for( sal_uInt16 i=0; i<3; i++ )
     {

sw/source/filter/xml/xmlimp.cxx

@@ -425,7 +425,8 @@ SwXMLImport::SwXMLImport(
     bShowProgress( true ),
     bOrganizerMode( false ),
     bInititedXForms( false ),
-    bPreserveRedlineMode( sal_True )
+    bPreserveRedlineMode( sal_True ),
+    doc( NULL )
 {
     _InitItemImport();
 
@@ -1016,20 +1017,7 @@ void SwXMLImport::SetViewSettings(const Sequence < PropertyValue > & aViewProps)
     // this method will modify the document directly -> lock SolarMutex
     SolarMutexGuard aGuard;
 
-    Reference < XTextDocument > xTextDoc( GetModel(), UNO_QUERY );
-    Reference < XText > xText = xTextDoc->getText();
-    Reference<XUnoTunnel> xTextTunnel( xText, UNO_QUERY);
-    OSL_ENSURE( xTextTunnel.is(), "missing XUnoTunnel for Cursor" );
-    if( !xTextTunnel.is() )
-        return;
-
-    SwXText *pText = reinterpret_cast< SwXText *>(
-            sal::static_int_cast< sal_IntPtr >( xTextTunnel->getSomething( SwXText::getUnoTunnelId() )));
-    OSL_ENSURE( pText, "SwXText missing" );
-    if( !pText )
-        return;
-
-    SwDoc *pDoc = pText->GetDoc();
+    SwDoc *pDoc = getDoc();
     Rectangle aRect;
     if( pDoc->GetDocShell() )
         aRect = pDoc->GetDocShell()->GetVisArea( ASPECT_CONTENT );
@@ -1463,20 +1451,7 @@ void SwXMLImport::SetConfigurationSettings(const Sequence < PropertyValue > & aC
     if ( !bTabOverMargin )
         xProps->setPropertyValue("TabOverMargin", makeAny( false ) );
 
-    Reference < XTextDocument > xTextDoc( GetModel(), UNO_QUERY );
-    Reference < XText > xText = xTextDoc->getText();
-    Reference<XUnoTunnel> xTextTunnel( xText, UNO_QUERY);
-    OSL_ENSURE( xTextTunnel.is(), "missing XUnoTunnel for Cursor" );
-    if( xTextTunnel.is() )
-    {
-        SwXText *pText = reinterpret_cast< SwXText *>(
-                sal::static_int_cast< sal_IntPtr >( xTextTunnel->getSomething( SwXText::getUnoTunnelId() )));
-        OSL_ENSURE( pText, "SwXText missing" );
-        if( pText )
-        {
-            SwDoc *pDoc = pText->GetDoc();
-            if( pDoc )
-            {
+    SwDoc *pDoc = getDoc();
     SfxPrinter *pPrinter = pDoc->getPrinter( false );
     if( pPrinter )
     {
@@ -1495,9 +1470,6 @@ void SwXMLImport::SetConfigurationSettings(const Sequence < PropertyValue > & aC
             pDoc->GetDocShell()->UpdateFontList();
         }
     }
-            }
-        }
-    }
 }
 
 
@@ -1740,4 +1712,25 @@ void SwXMLImport::initXForms()
     bInititedXForms = true;
 }
 
+SwDoc* SwXMLImport::getDoc()
+{
+    if( doc != NULL )
+        return doc;
+    Reference < XTextDocument > xTextDoc( GetModel(), UNO_QUERY );
+    Reference < XText > xText = xTextDoc->getText();
+    Reference<XUnoTunnel> xTextTunnel( xText, UNO_QUERY);
+    assert( xTextTunnel.is());
+    SwXText *pText = reinterpret_cast< SwXText *>(
+            sal::static_int_cast< sal_IntPtr >( xTextTunnel->getSomething( SwXText::getUnoTunnelId() )));
+    assert( pText != NULL );
+    doc = pText->GetDoc();
+    assert( doc != NULL );
+    return doc;
+}
+
+const SwDoc* SwXMLImport::getDoc() const
+{
+    return const_cast< SwXMLImport* >( this )->getDoc();
+}
+
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */

sw/source/filter/xml/xmlimp.hxx

@@ -79,6 +79,8 @@ class SwXMLImport: public SvXMLImport
     bool                bInititedXForms : 1;
     sal_Bool                bPreserveRedlineMode;
 
+    SwDoc*      doc; // cached for getDoc()
+
     void                    _InitItemImport();
     void                    _FinitItemImport();
     void                    UpdateTxtCollConditions( SwDoc *pDoc );
@@ -194,6 +196,9 @@ public:
     ::com::sun::star::uno::Reference<
         ::com::sun::star::document::XDocumentProperties>
             GetDocumentProperties() const;
+
+    const SwDoc* getDoc() const;
+    SwDoc* getDoc();
 };
 
 inline const SvXMLUnitConverter& SwXMLImport::GetTwipUnitConverter() const