mathproperty.h

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#ifndef mathproperty_h
#define mathproperty_h

/*+
________________________________________________________________________

 (C) dGB Beheer B.V.; (LICENSE) http://opendtect.org/OpendTect_license.txt
 Author:        Bert Bril
 Date:          Jan 2004
 RCS:           $Id$
________________________________________________________________________


-*/

#include "generalmod.h"
#include "property.h"
#include "uistring.h"
class UnitOfMeasure;
namespace Math { class Formula; class SpecVarSet; }


mExpClass(General) MathProperty : public Property
{ mODTextTranslationClass(Property)
public:
                        MathProperty(const PropertyRef&,const char* def=0);
                        MathProperty(const MathProperty&);
                        ~MathProperty();

    Math::Formula&      getForm()               { return form_; }
    const Math::Formula& getForm() const        { return form_; }

    PropertyRef::StdType inputType(int) const;
    bool                haveInput( int idx ) const    { return inps_[idx]; }
    void                setInput(int,const Property*);

    virtual bool        init(const PropertySet&) const;
    virtual uiString    errMsg() const          { return errmsg_; }
    virtual bool        dependsOn(const Property&) const;
    bool                hasCyclicalDependency(BufferStringSet& inputnms) const;

    mDefPropertyFns(MathProperty,"Math");

                        // convenience, shielding from Math::Formula
    const char*         formText(bool user_display=false) const;
    int                 nrInputs() const;
    const char*         inputName(int) const;
    const UnitOfMeasure* inputUnit(int) const;
    bool                isConst(int) const;
    void                setUnit(const UnitOfMeasure*);
    const UnitOfMeasure* unit() const;

    static const Math::SpecVarSet& getSpecVars();

protected:

    Math::Formula&              form_;
    mutable ObjectSet<const Property> inps_;
    mutable uiString    errmsg_;
    mutable BufferString        fulldef_;

    void                        setPreV5Def(const char*);

};


#endif