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/***************************** LICENSE START ***********************************
Copyright 2012 ECMWF and INPE. This software is distributed under the terms
of the Apache License version 2.0. In applying this license, ECMWF does not
waive the privileges and immunities granted to it by virtue of its status as
an Intergovernmental Organization or submit itself to any jurisdiction.
***************************** LICENSE END *************************************/
//
// .NAME:
// Visitor
//
// .AUTHOR:
// Gilberto Camara, Baudouin Raoult and Fernando Ii
//
// .SUMMARY:
// An abstract base class for definition of a "Visitor" pattern
//
//
// .CLIENTS:
// Presentable
//
//
// .RESPONSABILITIES:
// Provide an interface for the subclasses which visit the
// page hierarchy
//
//
// .COLLABORATORS:
//
//
// .BASE CLASS:
//
//
// .DERIVED CLASSES:
// Device, MacroVisitor
//
// .REFERENCES:
// The relation between
//
#ifndef Visitor_H
#define Visitor_H
class SuperPage;
class Page;
class SubPage;
class Visitor {
public:
// Contructors
Visitor() {}
// Destructor
virtual ~Visitor() {}
// Visitor methods
virtual void Visit ( SuperPage& ) = 0;
virtual void Visit ( Page& ) = 0;
virtual void Visit ( SubPage& ) = 0;
// virtual void Visit ( MagnifyPage& ) = 0;
// virtual void Visit ( EditMapPage& ) = 0;
private:
// No copy allowed
Visitor(const Visitor&);
Visitor& operator=(const Visitor&){return *this;}
};
#endif
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