src/modules/opc/opcprocessvar.h

/*******************************************************************************
 * Copyright (c) 2012 AIT, ACIN
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License 2.0 which is available at
 * http://www.eclipse.org/legal/epl-2.0.
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * Contributors:
 *   Filip Andren, Alois Zoitl - initial API and implementation and/or initial documentation
 *******************************************************************************/
#ifndef OPCPROCESSVAR_H_
#define OPCPROCESSVAR_H_

#include "windows.h"
#include "Variant.h"
#include "fortelist.h"
#include <forte_sync.h>

class COPCItem;

class COpcProcessVar{
  public:
    enum EOpcProcessVarFunctions{
      e_FBInput, e_FBOutput
    };

    COpcProcessVar(const char* pa_acItemGroupName, const char* pa_acItemName, EOpcProcessVarFunctions pa_eFunction);
    ~COpcProcessVar(){
    }

    const char* getItemName() const {
      return m_acItemName;
    }
    const char* getItemGroupName() const {
      return m_acItemGroupName;
    }
    EOpcProcessVarFunctions getItemFunction() const {
      return m_eFunction;
    }

    void setOpcItem(COPCItem* pa_pOpcItem){
      m_pOpcItem = pa_pOpcItem;
    }

    void sendItemData();

    void setNewValue(Variant pa_oNewValue);
    Variant peekNewValue();

    Variant updateValue();

    bool getIsActive() const {
      return m_bActive;
    }

    void setIsActive(bool pa_bActive){
      m_bActive = pa_bActive;
    }

  private:
    COPCItem* m_pOpcItem;

    const char* m_acItemGroupName;
    const char* m_acItemName;
    bool m_bActive;

    Variant m_oCurrentValue;

    typedef CSinglyLinkedList<Variant> TVariantList;
    TVariantList m_lNewValueQueue;

    Variant m_oNewValue;

    CSyncObject m_oSync;

    EOpcProcessVarFunctions m_eFunction;

};

#endif // OPCPROCESSVAR_H_