#pragma once

#include "cafPdmChildArrayField.h"
#include "cafPdmObject.h"

#include <QXmlStreamWriter>

namespace caf
{
class PdmReferenceHelper;

//==================================================================================================
/// The PdmObjectGroup serves as a container of unknown PdmObjects
//==================================================================================================
class PdmObjectGroup : public PdmObject
{
    CAF_PDM_HEADER_INIT;

public:
    PdmObjectGroup();
    ~PdmObjectGroup() override;

    std::vector<PdmObjectHandle*> objects;

    void deleteObjects();
    void addObject( PdmObjectHandle* obj );

    template <typename T>
    void objectsByType( std::vector<PdmPointer<T>>* typedObjects ) const
    {
        if ( !typedObjects ) return;
        size_t it;
        for ( it = 0; it != objects.size(); ++it )
        {
            T* obj = dynamic_cast<T*>( objects[it] );
            if ( obj ) typedObjects->push_back( obj );
        }
    }

    template <typename T>
    void createCopyByType( std::vector<PdmPointer<T>>* copyOfTypedObjects, PdmObjectFactory* objectFactory ) const;
};

//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
template <typename T>
void PdmObjectGroup::createCopyByType( std::vector<PdmPointer<T>>* copyOfTypedObjects, PdmObjectFactory* objectFactory ) const
{
    std::vector<PdmPointer<T>> sourceTypedObjects;
    objectsByType( &sourceTypedObjects );

    for ( size_t i = 0; i < sourceTypedObjects.size(); i++ )
    {
        QString xml = xmlObj( sourceTypedObjects[i] )->writeObjectToXmlString();

        PdmObjectHandle* objectCopy =
            PdmXmlObjectHandle::readUnknownObjectFromXmlString( xml, PdmDefaultObjectFactory::instance(), true );

        T* typedObject = dynamic_cast<T*>( objectCopy );
        CAF_ASSERT( typedObject );

        copyOfTypedObjects->push_back( typedObject );
    }
}

//==================================================================================================
/// The PdmObjectCollection serves as a container of unknown PdmObjects stored in a PdmChildArrayField
//==================================================================================================
class PdmObjectCollection : public PdmObject
{
    CAF_PDM_HEADER_INIT;

public:
    PdmObjectCollection();
    ~PdmObjectCollection() override;

    caf::PdmChildArrayField<PdmObjectHandle*> objects;
};

} // End of namespace caf