live_component_accessor.h

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/*! \file
  \brief  The disti::LiveComponentAccessor class.

  \par Copyright Information

  Copyright (c) 2017 by The DiSTI Corporation.<br>
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  <br>
  All rights reserved.<br>

  This Software contains proprietary trade secrets of DiSTI and may not be
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Derivative Works based on this or other copyrighted DiSTI Software.

  NO WARRANTY. THE SOFTWARE IS PROVIDED "AS-IS," WITHOUT WARRANTY OF ANY KIND,
AND ANY USE OF THIS SOFTWARE PRODUCT IS AT YOUR OWN RISK. TO THE MAXIMUM EXTENT
PERMITTED BY APPLICABLE LAW, DISTI AND ITS SUPPLIERS DISCLAIM ALL WARRANTIES
AND CONDITIONS, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
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  LIMITATION OF LIABILITY. TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW,
IN NO EVENT SHALL DISTI OR ITS SUPPLIERS BE LIABLE FOR ANY SPECIAL, INCIDENTAL,
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*/

#ifndef _LIVE_COMPONENT_ACCESSOR_H
#define _LIVE_COMPONENT_ACCESSOR_H

#include "gls_include.h"
#include "version.h"
#include <string>

namespace disti
{
class LiveComponentLibRef;
class ComponentBase;
/** LiveComponentAccessor keeps the LiveComponent library loaded in the application.
  * and stores the information necessary to safely delete the component.*/
class LiveComponentAccessor
{
public:
    typedef void ( *CreateCb )( ComponentBase* );

private:
    LiveComponentLibRef* _liveComponentLibRef; //< Reference to the library the component was loaded from (freed by the LiveComponentAccessor)
    std::string          _className;           //< The ClassName of the component
    ComponentBase*       _component;           //< The component to be freed by the LiveComponentAccessor

    //** Private constructor: see CreateInstance() */
    GLS_EXPORT LiveComponentAccessor( LiveComponentLibRef* lib, const char* className, ComponentBase* comp );
    virtual GLS_EXPORT ~LiveComponentAccessor();

public:
    /** Creates a LiveComponentAccessor and associates it with the given component. */
    static GLS_EXPORT LiveComponentAccessor* CreateInstance( LiveComponentLibRef* lib, const char* className, ComponentBase* comp );

    /** Clone the LiveComponentAccessor to apply to a new component instance */
    virtual GLS_EXPORT LiveComponentAccessor* Clone( ComponentBase* newComp );

    /** Deletes the LiveComponentAccessor, it's associated component, and the LiveComponentLibRef. */
    virtual GLS_EXPORT void Delete();

    /** Returns the RSO library version info */
    GLS_EXPORT const GlsBuiltVersionInfo& BuiltVersion();

    /** Returns the RSO library path */
    GLS_EXPORT const char* LoadedFilePath();

    /** Returns the RSO's class name */
    GLS_EXPORT const char* LoadedClassName();
};

} // namespace disti

#endif