starmath/source/viewhdl.cxx

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  30
  31 // MARKER(update_precomp.py): autogen include statement, do not remove
  32 #include "precompiled_starmath.hxx"
  33
  34
  35 #include <view.hxx>
  36 #include <comphelper/processfactory.hxx>
  37 #include <com/sun/star/lang/XMultiServiceFactory.hpp>
  38 #include <com/sun/star/datatransfer/clipboard/XClipboardListener.hpp>
  39 #include <com/sun/star/datatransfer/clipboard/XClipboardNotifier.hpp>
  40 #include <vos/mutex.hxx>
  41 #include <cppuhelper/implbase1.hxx>
  42 #include <svtools/transfer.hxx>
  43 #include <sfx2/bindings.hxx>
  44 #include <sfx2/sfxsids.hrc>
  45
  46 using namespace ::com::sun::star;
  47 using namespace ::com::sun::star::uno;
  48 using namespace ::com::sun::star::datatransfer::clipboard;
  49
  50 // --------------------------- Clipboard EventListener ------------------
  51
  52 class SmClipboardChangeListener : public ::cppu::WeakImplHelper1<
  53         ::com::sun::star::datatransfer::clipboard::XClipboardListener >
  54 {
  55         SmViewShell*    pView;
  56
  57         // XEventListener
  58         virtual void SAL_CALL disposing(
  59                         const lang::EventObject& rEventObject ) throw ( ::com::sun::star::uno::RuntimeException)
  60 ;//                                                     throw( UNO_NMSPC::RuntimeException );
  61
  62         // XClipboardListener
  63         virtual void SAL_CALL changedContents(
  64                         const datatransfer::clipboard::ClipboardEvent& rEventObject ) throw ( ::com::sun::star::uno::RuntimeException)
  65 ;//                                                                             throw( UNO_NMSPC::RuntimeException );
  66
  67 public:
  68         SmClipboardChangeListener( SmViewShell& rView ) : pView( &rView ) {}
  69         virtual ~SmClipboardChangeListener();
  70
  71         void ViewDestroyed() { pView = 0; }
  72
  73         void AddRemoveListener( BOOL bAdd );
  74 };
  75
  76
  77
  78 // ------------------------- SmClipboardChangeListener ---------------------
  79
  80 SmClipboardChangeListener::~SmClipboardChangeListener()
  81 {
  82 }
  83
  84 void SAL_CALL SmClipboardChangeListener::disposing(
  85                                     const lang::EventObject& /*rEventObject*/ ) throw ( ::com::sun::star::uno::RuntimeException)
  86 {
  87 }
  88
  89 void SAL_CALL SmClipboardChangeListener::changedContents(
  90                                                         const ClipboardEvent& rEventObject ) throw ( ::com::sun::star::uno::RuntimeException)
  91 {
  92     const ::vos::OGuard aGuard( Application::GetSolarMutex() );
  93
  94     if( pView )
  95         {
  96                 {
  97             TransferableDataHelper aDataHelper( rEventObject.Contents );
  98             sal_Bool bHasTransferable = aDataHelper.GetTransferable().is();
  99
 100             //! according to CD the above call to GetTransferable may create a (new)
 101             //! message loop and thus result in re-entrant code.
 102             //! Thus it was suggested to check 'pView' here again.
 103             if (pView)
 104             {
 105                 pView->bPasteState = bHasTransferable &&
 106                     ( aDataHelper.HasFormat( FORMAT_STRING ) ||
 107                     aDataHelper.HasFormat( SOT_FORMATSTR_ID_EMBEDDED_OBJ ) ||
 108                     (aDataHelper.HasFormat( SOT_FORMATSTR_ID_OBJECTDESCRIPTOR )
 109                         && aDataHelper.HasFormat( SOT_FORMATSTR_ID_EMBED_SOURCE )));
 110             }
 111                 }
 112
 113         if (pView)
 114         {
 115             SfxBindings& rBind = pView->GetViewFrame()->GetBindings();
 116             rBind.Invalidate( SID_PASTE );
 117         }
 118         }
 119 }
 120
 121 void SmClipboardChangeListener::AddRemoveListener( BOOL bAdd )
 122 {
 123         try
 124         {
 125                 do {
 126                         Window* pW;
 127                         Reference< XClipboard > xClipboard;
 128                         if( pView && 0 != ( pW = pView->GetEditWindow()) )
 129                                 xClipboard = pW->GetClipboard();
 130                         if( !xClipboard.is() )
 131                                 break;
 132
 133                         Reference< XClipboardNotifier > xClpbrdNtfr( xClipboard, UNO_QUERY );
 134                         if( xClpbrdNtfr.is() )
 135                         {
 136                                 Reference< XClipboardListener > xClipEvtLstnr( this );
 137                                 if( bAdd )
 138                                         xClpbrdNtfr->addClipboardListener( xClipEvtLstnr );
 139                                 else
 140                                         xClpbrdNtfr->removeClipboardListener( xClipEvtLstnr );
 141                         }
 142                 }  while ( FALSE );
 143         }
 144         catch( const ::com::sun::star::uno::Exception& )
 145         {
 146         }
 147 }
 148
 149 // ------------------------- SmViewShell ---------------------
 150
 151 void SmViewShell::AddRemoveClipboardListener( BOOL bAdd )
 152 {
 153     // AddRemoveListener and ViewDestroyed below should be an
 154     // atomic operation and must not be 'interrupted' by other code
 155     const ::vos::OGuard aGuard( Application::GetSolarMutex() );
 156
 157         if( bAdd && !xClipEvtLstnr.is() )
 158         {
 159                 xClipEvtLstnr = pClipEvtLstnr = new SmClipboardChangeListener( *this );
 160                 pClipEvtLstnr->AddRemoveListener( TRUE );
 161         }
 162         else if( !bAdd && xClipEvtLstnr.is() )
 163         {
 164                 pClipEvtLstnr->AddRemoveListener( FALSE );
 165                 pClipEvtLstnr->ViewDestroyed();
 166         }
 167 }
 168
 169
 170