document_interface.h

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// Based on "Design Patterns: Elements of Reusable Object-Oriented Software"
// book by Erich Gamma, John Vlissides, Ralph Johnson, and Richard Helm 
//
// Created by Bartosz Rachwal. The National Institute of Advanced Industrial Science and Technology, Japan.

#ifndef OPERATIONAL_TEMPLATEMETHOD_DOCUMENT_INTERFACE_H_
#define OPERATIONAL_TEMPLATEMETHOD_DOCUMENT_INTERFACE_H_

namespace operational
{
namespace templatemethod
{
enum DocumentState
{
    kNonCreated,
    kCreated,
    kOpened,
    kClosed,
    kSaved,
    kRead
};

class DocumentInterface
{
    public:
    virtual ~DocumentInterface() {}

    virtual void Save() = 0;
    virtual void Open() = 0;
    virtual void Close() = 0;
    virtual void Read() = 0;

    virtual DocumentState state() const = 0;
};
}
}

#endif