dynamicFeatureSet.h

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/*******************************************************************************
** Copyright (c) 2020 MAK Technologies, Inc.
** All rights reserved.
*******************************************************************************/


#pragma once

#include "features/featuresDefines.h"
#include "features/featureSet.h"
#include "features/featureSetUtils.h"

#include <vrfutil/objectCounter.h>

#include <boost/signals2.hpp>

namespace MAKVRinTerra
{
   template <typename F>
   class DtDynamicFeatureSetTemplate
      : public DtFeatureSetTemplate<F>::Source
#ifdef DtObjectDebugger_Enable
      , public DtObjectDebugger< DtDynamicFeatureSetTemplate<F> >
#endif
   {
      typedef typename DtFeatureSetTemplate<F>::Source Base;

   public:
      typedef typename Base::DetachCallback DetachCallback;
      typedef typename Base::LoadedCallback LoadedCallback;
      typedef typename Base::FeaturePtr FeaturePtr;
      typedef typename Base::Feature Feature;

      typedef boost::shared_ptr<DtDynamicFeatureSetTemplate>       Ptr;
      typedef boost::shared_ptr<const DtDynamicFeatureSetTemplate> CPtr;

      Ptr shared_from_this()
      {
         return boost::static_pointer_cast<DtDynamicFeatureSetTemplate>(Base::shared_from_this());
      }

      std::string label() const
      {
         return "dynamic feature set";
      }

      DtFeatureSetTemplate<F>* filter(
         const DtQuery& query,
         const boost::optional<DtFeatureGeometry>& geometry,
         DtLoadType load) const
      {
         return new typename Base::Filtered(this->clone(), query, geometry);
      }

      DetachCallback addLoadedCallback(const LoadedCallback& callback) const
      {
         if (!callback)
            return DetachCallback();

         typedef boost::signals2::connection Connection;

         Connection conn = myLoadedSignal.connect(callback);

         try
         {
            return boost::bind(&Connection::disconnect, conn);
         }
         catch (...)
         {
            conn.disconnect();
            throw;
         }
      }

      FeaturePtr addFeaturePtr(Feature* feature)
      {
         FeaturePtr f = Base::addFeaturePtr(feature);
         myLoadedSignal();
         return f;
      }

   protected:
      typedef boost::signals2::signal<void ()> LoadedSignal;
      mutable LoadedSignal myLoadedSignal;
   };

   typedef DtDynamicFeatureSetTemplate<DtFeature> DtDynamicFeatureSet;
}

DT_DEFINE_OBJECT_DEBUGGER_NAME_TEMPLATE(MAKVRinTerra::DtDynamicFeatureSetTemplate);