Value.h

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//-----------------------------------------------------------------------------
//
//  Value.h
//
//  Base class for all OpenZWave Value Classes
//
//  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 _Value_H
#define _Value_H

#include <string>
#ifdef __FreeBSD__
#include <time.h>
#endif
#include "Defs.h"
#include "platform/Ref.h"
#include "value_classes/ValueID.h"
#include "platform/Log.h"

class TiXmlElement;

namespace OpenZWave
{
    class Driver;
    namespace Internal
    {
        namespace VC
        {

            class Value: public Internal::Platform::Ref
            {
                    friend class OpenZWave::Driver;
                    friend class ValueStore;

                public:
                    Value(uint32 const _homeId, uint8 const _nodeId, ValueID::ValueGenre const _genre, uint8 const _commandClassId, uint8 const _instance, uint16 const _index, ValueID::ValueType const _type, string const& _label, string const& _units, bool const _readOnly, bool const _writeOnly, bool const _isset, uint8 const _pollIntensity);
                    Value();

                    virtual void ReadXML(uint32 const _homeId, uint8 const _nodeId, uint8 const _commandClassId, TiXmlElement const* _valueElement);
                    virtual void WriteXML(TiXmlElement* _valueElement);

                    ValueID const& GetID() const
                    {
                        return m_id;
                    }
                    bool IsReadOnly() const
                    {
                        return m_readOnly;
                    }
                    bool IsWriteOnly() const
                    {
                        return m_writeOnly;
                    }
                    bool IsSet() const
                    {
                        return m_isSet;
                    }
                    bool IsPolled() const
                    {
                        return m_pollIntensity != 0;
                    }

                    string const GetLabel() const;
                    void SetLabel(string const& _label, string const lang = "");

                    string const& GetUnits() const
                    {
                        return m_units;
                    }
                    void SetUnits(string const& _units)
                    {
                        m_units = _units;
                    }

                    string const GetHelp() const;
                    void SetHelp(string const& _help, string const lang = "");

                    uint8 const& GetPollIntensity() const
                    {
                        return m_pollIntensity;
                    }
                    void SetPollIntensity(uint8 const& _intensity)
                    {
                        m_pollIntensity = _intensity;
                    }

                    int32 GetMin() const
                    {
                        return m_min;
                    }
                    int32 GetMax() const
                    {
                        return m_max;
                    }

                    void SetChangeVerified(bool _verify)
                    {
                        m_verifyChanges = _verify;
                    }
                    bool GetChangeVerified()
                    {
                        return m_verifyChanges;
                    }

                    virtual string const GetAsString() const
                    {
                        return "";
                    }
                    virtual bool SetFromString(string const&)
                    {
                        return false;
                    }

                    bool Set();                         // For the user to change a value in a device

                    // Helpers
                    static OpenZWave::ValueID::ValueGenre GetGenreEnumFromName(char const* _name);
                    static char const* GetGenreNameFromEnum(ValueID::ValueGenre _genre);
                    static OpenZWave::ValueID::ValueType GetTypeEnumFromName(char const* _name);
                    static char const* GetTypeNameFromEnum(ValueID::ValueType _type);
#if 0
                    inline void AddRef() {
                        Ref::AddRef();
                        Log::Write(LogLevel_Warning, "Add Ref %d - %d %s", m_refs, m_id.GetId(), __func__);
                        Internal::StackTraceGenerator::GetTrace();
                    }
                    inline int32 Release() {
                        Log::Write(LogLevel_Warning, "Del Ref %d - %d %s", m_refs -1, m_id.GetId(), __func__);
                        Internal::StackTraceGenerator::GetTrace();
                        return Ref::Release();
                    }
#endif
                protected:
                    virtual ~Value();

                    bool IsCheckingChange() const
                    {
                        return m_checkChange;
                    }
                    void SetCheckingChange(bool _check)
                    {
                        m_checkChange = _check;
                    }
                    void OnValueRefreshed();            // A value in a device has been refreshed
                    void OnValueChanged();              // The refreshed value actually changed
                    int VerifyRefreshedValue(void* _originalValue, void* _checkValue, void* _newValue, ValueID::ValueType _type, int _originalValueLength = 0, int _checkValueLength = 0, int _newValueLength = 0);

                    int32 m_min;
                    int32 m_max;

                    time_t m_refreshTime;           // time_t identifying when this value was last refreshed
                    bool m_verifyChanges;       // if true, apparent changes are verified; otherwise, they're not
                    ValueID m_id;

                private:
                    string m_units;
                    bool m_readOnly;
                    bool m_writeOnly;
                    bool m_isSet;
                    uint8 m_affectsLength;
                    uint8* m_affects;
                    bool m_affectsAll;
                    bool m_checkChange;
                    uint8 m_pollIntensity;
            };
        } // namespace VC
    } // namespace Internal
} // namespace OpenZWave

#endif