Modify __init__ and close method to deal with registration process

python/obitools3/dms/view/view.pyx

@@ -16,13 +16,17 @@ from .dms  cimport __OBIDMS_VIEW_CLASS__
 
 from obitools3.utils cimport tobytes, \
                              bytes2str
-                             
+   
+from ..object cimport OBIObjectClosedInstance
+                          
 
-cdef class View :
+cdef class View(OBIObject) :
 
         
     def __init__(self,dms,int __internalCall__):
         
+        OBIObject.__init__(self)
+        
         if __internalCall__!=987654:
             raise RuntimeError('OBIView constructor cannot be called directly')
         
@@ -55,6 +59,8 @@ cdef class View :
                                % (str(self.name),
                                   bytes2str(view_name_b))
                               )
+            
+        self._dms.register(view)
                                 
         return view
     
@@ -85,6 +91,8 @@ cdef class View :
             message = "Error : Cannot create view %s" % bytes2str(view_name_b)
             raise RuntimeError(message)
                 
+        dms.register(view)
+
         return view
         
     @staticmethod
@@ -101,16 +109,25 @@ cdef class View :
         if view._pointer == NULL :
             raise RuntimeError("Error : Cannot open view %s" % bytes2str(view_name_b))
         
+        dms.register(view)
+
         return view
         
     def close(self):
-        if (self._pointer != NULL): 
+        cdef Obiview_p pointer = self._pointer
+        
+        if (pointer != NULL): 
+            self._dms.unregister(self)
+            OBIObject.close(self)
+            
+            self._pointer = NULL
+            
             if obi_save_and_close_view(self._pointer) < 0 :
                 raise Exception("Problem closing view %s" % 
                                 bytes2str(self.name))
+        else:
+            raise OBIObjectClosedInstance()
 
-    def __dealloc__(self):
-        self.close()
         
     def __repr__(self) :
         cdef str s = "{name:s}\n{comments:s}\n{line_count:d} lines\n".format(name       = str(self.name),