/**
  * @RDE_HEADER@
  * Interface-Implementation of MapObjectIndicator
  * $Id$
  * $HeadURL$
  * $Author$
  */

#pragma once

// Own
#include "abstract_multi_point_map_object_impl.h"
#include "basic_path_object_impl.h"
#include <MapObjects/map_object_indicator.h> // Interface


// Qt
#include <QString>
#include <QColor>
#include <QPointF>
#include <QSharedPointer>




//----------------------------------------------------------------------------
namespace SituationMap
{

// forward
class GraphicalObjectPictureMarker;


/**
 * @brief The MapObjectIndicatorImpl can be used to ease the locating of an object.
 * The MapObjectIndicatorImpl can by parametrized with just the UniqueMapId to point to.
 * updateView() will do the rest for you:
 * - retrieve the object to point to,
 * - get the bounding box of that object and
 * - create an indicator from the current center of the map to the object.
 * \note <b> If the object to point to disappears, you are responsible for removing the MapObjectIndicatorImpl! </b>
 *
 * A class instance consists of the following logical elements:
 * - mainGraphicalObject      (GraphicalObjectPath displaying the line with arrowhead)
 * - m_pictureMarker of type GraphicalObjectPictureMarker / Image to show circle at the center of the map.
 * - mainGraphicalObjectText  (displaying the text/name/identifier)
 * - tacticalAppearance       (irrelevant)
 */
// inherent 'public', to get that implementation
// inherent 'public virtual'  to get that interface
class SITUATIONMAPOBJECTS_EXPORT MapObjectIndicatorImpl : public BasicPathObjectImpl, public virtual MapObjectIndicator
{
  using BaseClass = BasicPathObjectImpl;

  template <typename> friend class GenericObjectFactory;
protected:
  explicit MapObjectIndicatorImpl(const QString &debugInfo = QString());
  virtual ~MapObjectIndicatorImpl();

public:
  MapObjectIndicatorImpl(const MapObjectIndicatorImpl &other)     = delete;
  MapObjectIndicatorImpl &operator=(MapObjectIndicatorImpl &other) = delete;


  Point3D startPoint() const override;
  Point3D endPoint() const override;

  void setStartAndEndPoint(const Point3D &start, const Point3D &end) override;

  UniqueMapId mapObjectToPointTo() override;
  void setMapObjectToPointTo(UniqueMapId uniqueId) override;


protected:
  bool updateViewImpl() override;

  friend class MapImpl;
  bool init(MapImpl *mapImpl, const QString &logicalLayerName) override;

  // internal/admin

  // logical

private:
  bool setPositions(const PositionCont &) override; //SHOULD NEVER BE CALLED

private:
  UniqueMapId                                   m_uniqueIdToPointTo        = INVALID_MAP_ID;
  QSharedPointer<GraphicalObjectPictureMarker>  m_pictureMarker;           // circle at the center of the map
  int                                           m_pictureMarkerSize        = 20;
  int                                           m_lineWidth                = 4;

  QMetaObject::Connection                       m_extentChangedConnection;

  LOGGER_T                                      m_logger;      ///< Interface of the Logging-Facility
};



} // namespace SituationMap