Code/Tools/Libs/ToolsFoundation/Reflection/PhantomRttiManager.h - dev - redgpu/ezEngine

Code/Tools/Libs/ToolsFoundation/Reflection/PhantomRttiManager.h

63 строки2 KB

Jan Krassnigg

Even more migration to ezStringView (Tools, Plugins, Foundation) (#979)

08 июн 2023, 15:18

08 июн 2023, 15:18568268d

#pragma once

#include <Foundation/Communication/Event.h>
#include <Foundation/Containers/IdTable.h>
#include <ToolsFoundation/Reflection/ReflectedType.h>

class ezPhantomRTTI;

struct ezPhantomRttiManagerEvent
{
  enum class Type
  {
    TypeAdded,
    TypeRemoved,
    TypeChanged,
  };

  ezPhantomRttiManagerEvent()

    = default;

  Type m_Type = Type::TypeAdded;
  const ezRTTI* m_pChangedType = nullptr;
};

/// \brief Manages all ezPhantomRTTI types that have been added to him.
///
/// A ezPhantomRTTI cannot be created directly but must be created via this managers
/// RegisterType function with a given ezReflectedTypeDescriptor.
class EZ_TOOLSFOUNDATION_DLL ezPhantomRttiManager
{
public:
  /// \brief Adds a reflected type to the list of accessible types.
  ///
  /// Types must be added in the correct order, any type must be added before
  /// it can be referenced in other types. Any base class must be added before
  /// any class deriving from it can be added.
  /// Call the function again if a type has changed during the run of the
  /// program. If the type actually differs the last known class layout the
  /// m_TypeChangedEvent event will be called with the old and new ezRTTI.
  ///
  /// \sa ezReflectionUtils::GetReflectedTypeDescriptorFromRtti
  static const ezRTTI* RegisterType(ezReflectedTypeDescriptor& ref_desc);

  /// \brief Removes a type from the list of accessible types.
  ///
  /// No instance of the given type or storage must still exist when this function is called.
  static bool UnregisterType(const ezRTTI* pRtti);

private:
  EZ_MAKE_SUBSYSTEM_STARTUP_FRIEND(ToolsFoundation, ReflectedTypeManager);

  static void Startup();
  static void Shutdown();
  static void PluginEventHandler(const ezPluginEvent& e);

public:
  static ezCopyOnBroadcastEvent<const ezPhantomRttiManagerEvent&> s_Events;

private:
  static ezSet<const ezRTTI*> s_RegisteredConcreteTypes;
  static ezHashTable<ezStringView, ezPhantomRTTI*> s_NameToPhantom;
};