text: //
  // The MIT License(MIT)
  //
  // Copyright(c) 2014 Demonsaw LLC
  //
  // Permission is hereby granted, free of charge, to any person obtaining a copy
  // of this software and associated documentation files (the "Software"), to deal
  // in the Software without restriction, including without limitation the rights
  // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  // copies of the Software, and to permit persons to whom the Software is
  // furnished to do so, subject to the following conditions:
  // 
  // The above copyright notice and this permission notice shall be included in all
  // copies or substantial portions of the Software.
  // 
  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  // SOFTWARE.
  
  #ifndef _EJA_GROUP_MODEL_COMPONENT_H_
  #define _EJA_GROUP_MODEL_COMPONENT_H_
  
  #include <memory>
  
  #include "component/model_component.h"
  #include "system/type.h"
  
  namespace eja
  {
  	class group_model_component : public model_component
  	{
  		make_factory(group_model_component);
  
  	private:
  		// Interface
  		virtual void on_add(const std::shared_ptr<entity> entity) override;
  		virtual void on_clear() override;
  
  	public:
  		group_model_component(QObject* parent = nullptr);
  
  		// Interface
  		virtual void init() override;
  	};
  }
  
  #endif
  