/*
 * Copyright 2015, Axel Dörfler, axeld@pinc-software.de.
 * Distributed under the terms of the MIT License.
 */
#ifndef CONDITIONS_H
#define CONDITIONS_H


#include <String.h>


class BMessage;


class ConditionContext {
public:
        virtual bool                            IsSafeMode() const = 0;
        virtual bool                            BootVolumeIsReadOnly() const = 0;
};


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

        virtual bool                            Test(ConditionContext& context) const = 0;

        /*!     Determines whether or not the result of this condition is fixed,
                and will not change anymore.
        */
        virtual bool                            IsConstant(ConditionContext& context) const;

        virtual BString                         ToString() const = 0;
};


class Conditions {
public:
        static  Condition*                      FromMessage(const BMessage& message);
        static  Condition*                      AddNotSafeMode(Condition* condition);
};


#endif // CONDITIONS_H