/*
 * Copyright 2008-2010, Haiku, Inc. All rights reserved.
 * Distributed under the terms of the MIT License.
 *
 * Authors:
 *              Michael Pfeiffer <laplace@users.sourceforge.net>
 */
#ifndef WIZARD_CONTROLLER_H
#define WIZARD_CONTROLLER_H


#include <SupportDefs.h>


class WizardView;
class WizardPageView;


class WizardController {
public:
                                                                WizardController();
        virtual                                         ~WizardController();

        virtual void                            Initialize(WizardView* wizard);
        virtual void                            Next(WizardView* wizard);
        virtual void                            Previous(WizardView* wizard);

protected:
        virtual int32                           InitialState() = 0;
        virtual int32                           NextState(int32 state) = 0;
        virtual WizardPageView*         CreatePage(int32 state, WizardView* wizard) = 0;

                        int32                           CurrentState() const;

private:
        class StateStack {
        public:
                StateStack(int32 state, StateStack* next)
                        :
                        fState(state),
                        fNext(next)
                {
                }

                int32 State()
                {
                        return fState;
                }

                StateStack* Next()
                {
                        return fNext;
                }

                void MakeEmpty();

        private:
                int32 fState;
                StateStack* fNext;
        };

                        void                            _PushState(int32 state);
                        void                            _ShowPage(WizardView* wizard);

private:
                        StateStack*                     fStack;
};


#endif  // WIZARD_CONTROLLER_H