EgtGeomKernel :

- gestione cancellazione oggetti puntati da GdbIterator
- aggiunte a GdbIterator EraseAndGoToNext e EraseAndGoToPrev
- possibilità di passare IGeomDB* al costruttore di GdbIterator.

GdbIterator.cpp

@@ -21,24 +21,29 @@ using namespace std ;
 
 //----------------------------------------------------------------------------
 IGdbIterator*
-CreateGdbIterator( void)
+CreateGdbIterator( IGeomDB* pGDB)
 {
-   return static_cast<IGdbIterator*> ( new GdbIterator) ;
+   return static_cast<IGdbIterator*> ( new GdbIterator( pGDB) ) ;
 }
 
 //----------------------------------------------------------------------------
 // GdbIterator
 //----------------------------------------------------------------------------
-GdbIterator::GdbIterator( void)
+GdbIterator::GdbIterator( IGeomDB* pGDB)
 {
-   m_pGDB = nullptr ;
+   if ( pGDB != nullptr)
+      SetGDB( pGDB) ;
+   else
+      m_pGDB = nullptr ;
+
    m_pCurrObj = nullptr ;
 }
 
 //----------------------------------------------------------------------------
 GdbIterator::~GdbIterator( void)
 {
-  // TODO : togliere link da GdbGeom per essere notificato della cancellazione di nodi 
+   if ( m_pGDB != nullptr)
+      m_pGDB->RemoveGdbIteratorFromList( this) ;
 }
 
 //----------------------------------------------------------------------------
@@ -46,8 +51,10 @@ bool
 GdbIterator::SetGDB( IGeomDB* pGDB)
 {
    m_pGDB = dynamic_cast<GeomDB*>( pGDB) ;
+   if ( m_pGDB == nullptr)
+      return false ;
 
-   return ( m_pGDB != nullptr) ;
+   return m_pGDB->AddGdbIteratorToList( this) ;
 }
 
 //----------------------------------------------------------------------------
@@ -188,6 +195,36 @@ GdbIterator::GoToPrev( void)
    return ( m_pCurrObj != nullptr) ;
 }
 
+//----------------------------------------------------------------------------
+bool
+GdbIterator::EraseAndGoToNext( void)
+{
+   if ( m_pGDB == nullptr  ||  m_pCurrObj == nullptr)
+      return false ;
+
+  // passo al successivo
+   GdbObj* pObjToErase = m_pCurrObj ;
+   m_pCurrObj = m_pCurrObj->GetNext() ;
+  // eseguo cancellazione
+   m_pGDB->Erase( pObjToErase) ;
+   return ( m_pCurrObj != nullptr) ;
+}
+
+//----------------------------------------------------------------------------
+bool
+GdbIterator::EraseAndGoToPrev( void)
+{
+   if ( m_pGDB == nullptr  ||  m_pCurrObj == nullptr)
+      return false ;
+
+  // passo al precedente
+   GdbObj* pObjToErase = m_pCurrObj ;
+   m_pCurrObj = m_pCurrObj->GetPrev() ;
+  // eseguo cancellazione
+   m_pGDB->Erase( pObjToErase) ;
+   return true ;
+}
+
 //----------------------------------------------------------------------------
 int
 GdbIterator::GetGdbType( void) const