#include <msp/core/attributes.h>
#include <msp/core/maputils.h>
+#include <msp/core/noncopyable.h>
#include <msp/core/refptr.h>
#include "collectionsource.h"
#include "loader.h"
between the collections, and are only deleted when all collections in the chain
have been destroyed.
*/
-class Collection
+class Collection: private NonCopyable
{
public:
/**
SourceList sources;
Collection *fallback;
- Collection(const Collection &);
- Collection &operator=(const Collection &);
public:
Collection();
virtual ~Collection();
if(!item)
throw std::invalid_argument("Collection::add(item)");
- RefPtr<typename RemoveConst<T>::Type> ptr(item);
+ typedef typename RemoveConst<T>::Type NCT;
+ RefPtr<NCT> ptr(item);
try
{
- insert_unique(items, name, ptr);
+ add_var(name, get_type<NCT>(name), ptr);
}
catch(...)
{
return extract<NCT>(get_var(name, get_type<NCT>(name)));
}
+ /** Finds a typed object in the collection. Returns null if the name does
+ not exist. Throws if the name exists but the object is of an incorrect
+ type. */
+ template<typename T>
+ T *find(const std::string &name) const
+ {
+ ItemMap::const_iterator i = items.find(name);
+ return (i!=items.end() ? extract<typename RemoveConst<T>::Type>(i->second) : 0);
+ }
+
+ template<typename T>
+ T *find(const std::string &name)
+ {
+ typedef typename RemoveConst<T>::Type NCT;
+ const Variant *var = find_var(name, get_type<NCT>(name));
+ return (var ? &extract<NCT>(*var) : 0);
+ }
+
private:
+ void add_var(const std::string &, const CollectionItemTypeBase *, const Variant &);
const Variant &get_var(const std::string &, const CollectionItemTypeBase *);
+ const Variant *find_var(const std::string &, const CollectionItemTypeBase *);
template<typename T>
T &extract(const Variant &var) const;
object when done with it. */
IO::Seekable *open_raw(const std::string &) const;
-protected:
- // Deprecated. Use open_raw instead.
- DEPRECATED IO::Seekable *open_from_sources(const std::string &n) { return open_raw(n); }
-
private:
void gather_names_from_sources(std::list<std::string> &, const CollectionItemTypeBase &) const;
virtual bool can_create() const = 0;
virtual void create_item(Collection &, const std::string &) const = 0;
virtual void load_item(Collection &, Parser &, const std::string &) const = 0;
+ virtual void notify_item(Collection &, const std::string &, const Variant &) const = 0;
template<typename T>
bool can_extract() const
{ return (dynamic_cast<C &>(coll).*func)(name); }
};
+ struct NotifyeeBase
+ {
+ virtual ~NotifyeeBase() { }
+
+ virtual void notify(Collection &, const std::string &, T &) const = 0;
+ };
+
+ template<typename C>
+ struct Notifyee: NotifyeeBase
+ {
+ typedef void (C::*FuncPtr)(const std::string &, T &);
+
+ FuncPtr func;
+
+ Notifyee(FuncPtr f): func(f) { }
+
+ virtual void notify(Collection &coll, const std::string &name, T &item) const
+ { (dynamic_cast<C &>(coll).*func)(name, item); }
+ };
+
template<typename B>
struct Extractor: CollectionItemTypeBase::Extractor<B>
{
};
CreatorBase *creat;
+ std::vector<NotifyeeBase *> notif;
public:
CollectionItemType():
~CollectionItemType()
{
delete creat;
+ for(typename std::vector<NotifyeeBase *>::const_iterator i=notif.begin(); i!=notif.end(); ++i)
+ delete *i;
}
/** Sets a datafile keyword for this item type. The Collection's loader
return *this;
}
+ template<typename C>
+ CollectionItemType ¬ify(void (C::*func)(const std::string &, T &))
+ {
+ notif.push_back(new Notifyee<C>(func));
+ return *this;
+ }
+
virtual bool is_same_type(const CollectionItemTypeBase &other) const
{ return dynamic_cast<const CollectionItemType<T> *>(&other); }
{
throw std::runtime_error("this type cannot be loaded");
}
+
+ virtual void notify_item(Collection &coll, const std::string &name, const Variant &var) const
+ {
+ RefPtr<T> obj = var.value<RefPtr<T> >();
+ for(typename std::vector<NotifyeeBase *>::const_iterator i=notif.begin(); i!=notif.end(); ++i)
+ (*i)->notify(coll, name, *obj);
+ }
};