Aspect.hpp

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#ifndef DART_COMMON_ASPECT_HPP_
#define DART_COMMON_ASPECT_HPP_
 
#include <string>
 
#include "dart/common/ClassWithVirtualBase.hpp"
#include "dart/common/Cloneable.hpp"
#include "dart/common/detail/NoOp.hpp"
 
namespace dart {
namespace common {
 
class Composite;
 
class Aspect
{
public:
  friend class Composite;
 
  class State : public Cloneable<State>
  {
  };
 
  template <class Mixin>
  using MakeState = MakeCloneable<State, Mixin>;
 
  class Properties : public Cloneable<Properties>
  {
  };
 
  template <class Mixin>
  using MakeProperties = MakeCloneable<Properties, Mixin>;
 
  virtual ~Aspect() = default;
 
  virtual std::unique_ptr<Aspect> cloneAspect() const = 0;
 
  virtual void setAspectState(const State& otherState);
 
  virtual const State* getAspectState() const;
 
  virtual void setAspectProperties(const Properties& someProperties);
 
  virtual const Properties* getAspectProperties() const;
 
protected:
  virtual void setComposite(Composite* newComposite);
 
  virtual void loseComposite(Composite* oldComposite);
};
 
//==============================================================================
template <class CompositeType>
class CompositeTrackingAspect : public Aspect
{
public:
  CompositeTrackingAspect();
 
  CompositeType* getComposite();
 
  const CompositeType* getComposite() const;
 
  bool hasComposite() const;
 
protected:
  void setComposite(Composite* newComposite) override;
 
  void loseComposite(Composite* oldComposite) override;
 
  CompositeType* mComposite;
};
 
} // namespace common
} // namespace dart
 
//==============================================================================
#define DART_COMMON_ASPECT_PROPERTY_CONSTRUCTOR(                               \
    ClassName, UpdatePropertiesMacro)                                          \
  ClassName(const ClassName&) = delete;                                        \
  inline ClassName(const PropertiesData& properties = PropertiesData())        \
    : AspectWithVersionedProperties<                                           \
          Base,                                                                \
          Derived,                                                             \
          PropertiesData,                                                      \
          CompositeType,                                                       \
          UpdatePropertiesMacro>(properties)                                   \
  {                                                                            \
  }
 
//==============================================================================
#define DART_COMMON_ASPECT_STATE_PROPERTY_CONSTRUCTORS(ClassName)              \
  ClassName(const ClassName&) = delete;                                        \
  inline ClassName(                                                            \
      const StateData& state = StateData(),                                    \
      const PropertiesData& properties = PropertiesData())                     \
    : AspectImpl(state, properties)                                            \
  {                                                                            \
  }                                                                            \
  inline ClassName(                                                            \
      const PropertiesData& properties, const StateData state = StateData())   \
    : AspectImpl(properties, state)                                            \
  {                                                                            \
  }
 
//==============================================================================
#define DART_COMMON_SET_ASPECT_PROPERTY_CUSTOM(Type, Name, Update)             \
  inline void set##Name(const Type& value)                                     \
  {                                                                            \
    mProperties.m##Name = value;                                               \
    Update();                                                                  \
  }
 
//==============================================================================
#define DART_COMMON_SET_ASPECT_PROPERTY(Type, Name)                            \
  DART_COMMON_SET_ASPECT_PROPERTY_CUSTOM(Type, Name, notifyPropertiesUpdated)
 
//==============================================================================
#define DART_COMMON_GET_ASPECT_PROPERTY(Type, Name)                            \
  inline const Type& get##Name() const                                         \
  {                                                                            \
    return mProperties.m##Name;                                                \
  }
 
//==============================================================================
#define DART_COMMON_SET_GET_ASPECT_PROPERTY(Type, Name)                        \
  DART_COMMON_SET_ASPECT_PROPERTY(Type, Name)                                  \
  DART_COMMON_GET_ASPECT_PROPERTY(Type, Name)
 
#include "dart/common/detail/Aspect.hpp"
 
#endif // DART_COMMON_ASPECT_HPP_