//------------------------------------------------------------------------------
//  Basler pylon SDK
//  Copyright (c) 2018-2021 Basler AG
//  http://www.baslerweb.com
//------------------------------------------------------------------------------
/*!
\file
\brief Contains the class CCommandParameter used to simplify access to %GenApi parameters.
*/

#ifndef INCLUDED_BASLER_PYLON_CCOMMANDPARAMETER_H
#define INCLUDED_BASLER_PYLON_CCOMMANDPARAMETER_H

#pragma once

#include <pylon/PylonBase.h>
#include <GenApi/ICommand.h>
#include <pylon/Parameter.h>

#ifdef _MSC_VER
#   pragma pack(push, PYLON_PACKING)
#endif /* _MSC_VER */

#ifdef _MSC_VER
#   pragma warning( push )
#   pragma warning( disable : 4275 ) // Class needs to have a dll interface to be used by clients of the class.
#   pragma warning( disable : 4250 ) // warning C4250: 'Pylon::CXYZParameter': inherits 'Pylon::CParameter::Pylon::CParameter::ZYX' via dominance
#endif

namespace Pylon
{
    /*!
    \brief Extends the GenApi::ICommand interface with convenience methods.
    */
    interface ICommandEx : virtual public GenApi::ICommand, virtual public IValueEx
    {
        using GenApi::ICommand::operator=;

        /*!
        \brief Executes the command and returns immediately if the parameter is writable.
        \return Returns false if the parameter is not writable.
        \threading
             The method accesses the parameter multiple times. These accesses are not synchronized by a lock.
        \error
             Can throw exceptions if accessing the camera failed.
        */
        virtual bool TryExecute() = 0;
    };


    /*!
    \brief CCommandParameter class used to simplify access to %GenApi parameters.
    */
    class PYLONBASE_API CCommandParameter : public ICommandEx, public CParameter
    {
    public:
        /*!
        \brief Creates an empty CCommandParameter object.
        \error
            Does not throw C++ exceptions.
        */
        CCommandParameter();


        /*!
        \brief Creates a CCommandParameter object and attaches it to a node, typically retrieved for a nodemap calling GetNode().
        \param[in] pNode The node to attach.
        \post
        <ul>
        <li>If the passed node does not match the parameter type, the parameter will be empty, see IsValid().
        <li>If the passed node does match the parameter type, it is attached and the parameter object can be used to access the node's functionality.
        <li>The parameter object must not be used to access the node's functionality if the source of the attached \c pNode has been destroyed. In this case, call Release() or attach a new node.
        </ul>
        \error
            Does not throw C++ exceptions.
        */
        explicit CCommandParameter( GenApi::INode* pNode );


        /*!
        \brief Creates a CCommandParameter object and attaches it to a node of a matching type.
        \param[in] pCommand The node to attach.
        \post
            The parameter object must not be used to access the node's functionality if the source of the attached \c pCommand has been destroyed. In this case, call Release() or attach a new node.
        \error
            Does not throw C++ exceptions.
        */
        explicit CCommandParameter( GenApi::ICommand* pCommand );


        /*!
        \brief Creates a CCommandParameter object and attaches it to a node retrieved from the provided node map.
        \param[in] pNodeMap The node map. The source of the parameter.
        \param[in] pName The name of the parameter to attach.
        \post
        <ul>
        <li>If \c pNodeMap or \c name is NULL, the parameter will be empty, see IsValid().
        <li>If the node does not match the parameter type, the parameter will be empty, see IsValid().
        <li>If the node does match the parameter type, it is attached and the parameter object can be used to access the node's functionality.
        <li>The parameter object must not be used to access the node's functionality if the provided node map has been destroyed. In this case, call Release() or attach a new node.
        </ul>
        \error
            The call to GenApi::INodeMap::GetNode can throw C++ exceptions.
        */
        CCommandParameter( GenApi::INodeMap* pNodeMap, const char* pName );


        /*!
        \brief Creates a CCommandParameter object and attaches it to a node retrieved from the provided node map.
        \param[in] nodeMap The node map. The source of the parameter.
        \param[in] pName The name of the parameter to attach.
        \post
        <ul>
        <li>If \c name is NULL, the parameter will be empty, see IsValid().
        <li>If the node does not match the parameter type, the parameter will be empty, see IsValid().
        <li>If the node does match the parameter type, it is attached and the parameter object can be used to access the node's functionality.
        <li>The parameter object must not be used to access the node's functionality if the provided node map has been destroyed. In this case, call Release() or attach a new node.
        </ul>
        \error
            The call to GenApi::INodeMap::GetNode can throw C++ exceptions.
        */
        CCommandParameter( GenApi::INodeMap& nodeMap, const char* pName );


        /*!
        \brief Copies a CCommandParameter object.
        \param[in] rhs The object to copy.
        \error
            Does not throw C++ exceptions.
        */
        CCommandParameter( const CCommandParameter& rhs );


        /*!
        \brief Destroys the CCommandParameter object.
        Does not access the attached node.
        \error
            Does not throw C++ exceptions.
        */
        virtual ~CCommandParameter();


        /*!
        \brief Attaches a node retrieved from the provided node map.
        \param[in] pNodeMap The node map. The source of the parameter.
        \param[in] pName The name of the parameter to attach.
        \return Returns true if the node has been attached.
        \post
        <ul>
        <li>If \c pNodeMap or \c name is NULL, the parameter will be empty, see IsValid().
        <li>If the node does not match the parameter type, the parameter will be empty, see IsValid().
        <li>If the node does match the parameter type, it is attached and the parameter object can be used to access the node's functionality.
        <li>The parameter object must not be used to access the node's functionality if the provided node map has been destroyed. In this case, call Release() or attach a new node.
        </ul>
        \error
            The call to GenApi::INodeMap::GetNode can throw C++ exceptions.
        */
        virtual bool Attach( GenApi::INodeMap* pNodeMap, const char* pName );


        /*!
        \brief Attaches a node retrieved from the provided node map.
        \param[in] nodeMap The node map. The source of the parameter.
        \param[in] pName The name of the parameter to attach.
        \return Returns true if the node has been attached.
        \post
        <ul>
        <li>If \c name is NULL the parameter will be empty, see IsValid().
        <li>If the node does not match the parameter type, the parameter will be empty, see IsValid().
        <li>If the node does match the parameter type, it is attached and the parameter object can be used to access the node's functionality.
        <li>The parameter object must not be used to access the node's functionality if the provided node map has been destroyed. In this case, call Release() or attach a new node.
        </ul>
        \error
            The call to GenApi::INodeMap::GetNode can throw C++ exceptions.
        */
        virtual bool Attach( GenApi::INodeMap& nodeMap, const char* pName );


        /*!
        \brief Attaches a node, typically retrieved for a nodemap calling GetNode().
        \param[in] pNode The node to assign.
        \return Returns true if the node has been attached.
        \post
        <ul>
        <li>If the node does not match the parameter type, the parameter will be empty, see IsValid().
        <li>If the node does match the parameter type, it is attached and the parameter object can be used to access the node's functionality.
        <li>The parameter object must not be used to access the node's functionality if the source of the attached \c pNode has been destroyed. In this case, call Release() or attach a new node.
        </ul>
        \error
            Does not throw C++ exceptions.
        */
        virtual bool Attach( GenApi::INode* pNode );


        /*!
        \brief Assigns a node of the same type to the parameter object.
        \param[in] pCommand The node to assign.
        \return Returns true if the node has been attached.
        \error
            Does not throw C++ exceptions.
        */
        virtual bool Attach( GenApi::ICommand* pCommand );


        /*!
        \brief Assigns a CCommandParameter object.
        \param[in] rhs The object to assign.
        \error
            Does not throw C++ exceptions.
        */
        CCommandParameter& operator=( const CCommandParameter& rhs );


        /*!
        \brief Returns true if the same nodes are attached or both parameters are empty.
        \param[in] rhs The object to compare to.
        \return Returns true if the same nodes are attached or both parameters are empty.
        \error
            Does not throw C++ exceptions.
        */
        virtual bool Equals( const CCommandParameter& rhs ) const;


        /*!
        \brief Returns true if the attached node pointer is equal.
        \param[in] pNode The node to compare to.
        \return Returns true if the attached node pointer is equal.
        \error
            Does not throw C++ exceptions.
        */
        virtual bool Equals( const GenApi::INode* pNode ) const;


        /*!
        \brief Returns true if the attached node pointer is equal.
        \param[in] pCommand The node to compare to.
        \return Returns true if the attached node pointer is equal.
        \error
            Does not throw C++ exceptions.
        */
        virtual bool Equals( const GenApi::ICommand* pCommand ) const;


        /*!
        \brief Releases the attached node.
        \error
            Does not throw C++ exceptions.
        */
        virtual void Release();


        // Implements IValueEx
        virtual bool IsValid() const;


        // Implements GenApi::ICommand
        virtual void Execute( bool verify = true );

        // Implements GenApi::ICommand
        virtual void operator()();

        // Implements GenApi::ICommand
        virtual bool IsDone( bool verify = true );


        // Implements ICommandEx
        virtual bool TryExecute();

    protected:
        GenApi::ICommand* m_pFeature;
    };
}
#ifdef _MSC_VER
#   pragma warning( pop )
#endif

#ifdef _MSC_VER
#   pragma pack(pop)
#endif /* _MSC_VER */

#endif /* INCLUDED_BASLER_PYLON_CCOMMANDPARAMETER_H */