+ virtual ~CollectionItemTypeBase();
+
+ void set_keyword(const std::string &);
+ const std::string &get_keyword() const { return kwd; }
+ void add_suffix(const std::string &);
+ bool match_name(const std::string &) const;
+ virtual void add_to_loader(Collection::Loader &) const = 0;
+ virtual bool can_create() const = 0;
+ virtual void create_item(Collection &, const std::string &) const = 0;
+ virtual Variant create_future() const = 0;
+
+ template<typename T>
+ bool check_type() const
+ { return dynamic_cast<Tag<T> *>(tag); }
+};
+
+
+/**
+Describes a type of item that can be loaded by a Collection. These are created
+by Collection::add_type.
+*/
+template<typename T>
+class CollectionItemType: public CollectionItemTypeBase
+{
+private:
+ class CreatorBase