ValueDecimal.h

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//-----------------------------------------------------------------------------
//
//  ValueDecimal.h
//
//  Represents a value that may have a fractional component
//
//  Copyright (c) 2010 Mal Lansell <openzwave@lansell.org>
//
//  SOFTWARE NOTICE AND LICENSE
//
//  This file is part of OpenZWave.
//
//  OpenZWave is free software: you can redistribute it and/or modify
//  it under the terms of the GNU Lesser General Public License as published
//  by the Free Software Foundation, either version 3 of the License,
//  or (at your option) any later version.
//
//  OpenZWave is distributed in the hope that it will be useful,
//  but WITHOUT ANY WARRANTY; without even the implied warranty of
//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//  GNU Lesser General Public License for more details.
//
//  You should have received a copy of the GNU Lesser General Public License
//  along with OpenZWave.  If not, see <http://www.gnu.org/licenses/>.
//
//-----------------------------------------------------------------------------
 
#ifndef _ValueDecimal_H
#define _ValueDecimal_H
 
#include <string>
#include "Defs.h"
#include "value_classes/Value.h"
 
class TiXmlElement;
 
namespace OpenZWave
{
    class Msg;
    class Node;

    class ValueDecimal: public Value
    {
        friend class EnergyProduction;
        friend class Meter;
        friend class SensorMultilevel;
        friend class ThermostatSetpoint;
 
    public:
        ValueDecimal( uint32 const _homeId, uint8 const _nodeId, ValueID::ValueGenre const _genre, uint8 const _commandClassId, uint8 const _instance, uint8 const _index, string const& _label, string const& _units, bool const _readOnly, bool const _writeOnly, string const& _value, uint8 const _pollIntensity );
        ValueDecimal(): m_precision( 0 ){}
        virtual ~ValueDecimal(){}
 
        bool Set( string const& _value );
        void OnValueRefreshed( string const& _value );
 
        // From Value
        virtual string const GetAsString() const { return GetValue(); }
        virtual bool SetFromString( string const& _value ) { return Set( _value ); }
        virtual void ReadXML( uint32 const _homeId, uint8 const _nodeId, uint8 const _commandClassId, TiXmlElement const* _valueElement );
        virtual void WriteXML( TiXmlElement* _valueElement );
 
        string GetValue()const{ return m_value; }
        uint8 GetPrecision()const{ return m_precision; }
 
    private:
        void SetPrecision( uint8 _precision ){ m_precision = _precision; }
 
        string  m_value;                // the current value
        string  m_valueCheck;           // the previous value (used for double-checking spurious value reads)
        string  m_newValue;             // a new value to be set on the appropriate device
            uint8   m_precision;
    };
 
} // namespace OpenZWave
 
#endif