AddDateMappingDetailsDialog Constructor
        
 Initializes the Add Date Mapping Details Dialog. Called during construction.
 
         
        Parameters
        
            - cube
            
 
            - 
                
Type: dundas.entities.NativeStructure
 The OLAP cube. 
            - hierarchy
            
 
            - 
                
Type: dundas.data.Hierarchy
 The hierarchy to create data mapping to. 
            - dateMapping
            
 
            - 
                
Type: dundas.entities.DateMapping
(Optional) The date mapping of the selected hierarchy.
Optional: True