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 * modification, are permitted provided that the following conditions are
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 *
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 * notice, this list of conditions and the following disclaimer.
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 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
 * distribution.
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 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
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 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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#ifndef O3D_CORE_CROSS_CLASS_MANAGER_H_
#define O3D_CORE_CROSS_CLASS_MANAGER_H_

#include <map>
#include <vector>

#include "core/cross/service_implementation.h"
#include "core/cross/iclass_manager.h"

namespace o3d {

// Maintains a collection of Class objects. Allows Classes to be retreived
// by name and objects of those Classes to be created.
class ClassManager : public IClassManager {
 public:
  explicit ClassManager(ServiceLocator* service_locator);

  virtual void AddClass(const ObjectBase::Class* class_type,
                        ObjectCreateFunc function);

  virtual void RemoveClass(const ObjectBase::Class* class_type);

  virtual const ObjectBase::Class* GetClassByClassName(
      const String& class_name) const;

  virtual bool ClassNameIsAClass(const String& derived_class_name,
                                 const ObjectBase::Class* base_class) const;

  virtual ObjectBase::Ref CreateObjectByClass(
      const ObjectBase::Class* object_class);

  virtual ObjectBase::Ref CreateObject(const String& type_name);

  std::vector<const ObjectBase::Class*> GetAllClasses() const;

 private:
  ServiceLocator* service_locator_;
  ServiceImplementation<IClassManager> service_;

  // A class to hold data about a class in the ObjectClassInfoNameMap;

  class ObjectClassInfo {
   public:

    ObjectClassInfo(const ObjectBase::Class* class_type,
                    ObjectCreateFunc func)
        : class_type_(class_type),
          creation_func_(func) { }

    const ObjectBase::Class* class_type() const {
      return class_type_;
    }

    ObjectCreateFunc creation_func() const {
      return creation_func_;
    }

   private:
    const ObjectBase::Class* class_type_;
    const ObjectCreateFunc creation_func_;
  };

  // A map by string of ObjectClassInfos.
  typedef std::map<const String, ObjectClassInfo> ObjectClassInfoNameMap;
  // A map by ObjectBase::Class of Object creations functions.
  typedef std::map<const ObjectBase::Class*,
                   ObjectCreateFunc> ObjectCreatorClassMap;

  // ObjectClassInfo by name.
  ObjectClassInfoNameMap object_class_info_name_map_;

  // ObjectClassInfo by class.
  ObjectCreatorClassMap object_creator_class_map_;
};
}

#endif  // O3D_CORE_CROSS_CLASS_MANAGER_H_