return result;
}
-// Extended properties
-template<>
-std::istream& readFrom<SGVec3d>(std::istream& stream, SGVec3d& result);
-template<>
-std::istream& readFrom<SGVec4d>(std::istream& stream, SGVec4d& result);
-
-
/**
* Property value types.
*/
DEFINTERNALPROP(const char[], STRING);
#undef DEFINTERNALPROP
-template<>
-struct PropertyTraits<SGVec3d>
-{
- static const Type type_tag = VEC3D;
- enum { Internal = 0 };
-};
-
-template<>
-struct PropertyTraits<SGVec4d>
-{
- static const Type type_tag = VEC4D;
- enum { Internal = 0 };
-};
}
}
-\f
////////////////////////////////////////////////////////////////////////
// A raw value.
//
return stream;
}
-template<>
-std::ostream& SGRawBase<SGVec3d>::printOn(std::ostream& stream) const;
-template<>
-std::ostream& SGRawBase<SGVec4d>::printOn(std::ostream& stream) const;
-
-\f
/**
* The smart pointer that manage reference counting
*/
typedef std::vector<SGPropertyNode_ptr> PropertyList;
}
-\f
/**
* The property change listener interface.
*
};
-\f
/**
* A node in a property tree.
*/
REMOVED = 8,
TRACE_READ = 16,
TRACE_WRITE = 32,
- USERARCHIVE = 64
+ USERARCHIVE = 64,
+ PRESERVE = 128
+ // beware: if you add another attribute here,
+ // also update value of "LAST_USED_ATTRIBUTE".
};
*/
static const int LAST_USED_ATTRIBUTE;
-
/**
* Default constructor.
*/
}
/**
- * Create a child node after the last node with the same name.
+ * Create a new child node with the given name and an unused index
+ *
+ * @param min_index Minimal index for new node (skips lower indices)
+ * @param append Whether to simply use the index after the last used index
+ * or use a lower, unused index if it exists
+ */
+ SGPropertyNode * addChild ( const char* name,
+ int min_index = 0,
+ bool append = true );
+ SGPropertyNode * addChild ( const std::string& name,
+ int min_index = 0,
+ bool append = true )
+ { return addChild(name.c_str(), min_index, append); }
+
+ /**
+ * Create multiple child nodes with the given name an unused indices
+ *
+ * @param count The number of nodes create
+ * @param min_index Minimal index for new nodes (skips lower indices)
+ * @param append Whether to simply use the index after the last used index
+ * or use a lower, unused index if it exists
*/
- SGPropertyNode * addChild (const char * name);
+ simgear::PropertyList addChildren ( const std::string& name,
+ size_t count,
+ int min_index = 0,
+ bool append = true );
/**
* Get a child node by name and index.
/**
* Get the path to this node from the root.
*/
- const char * getPath (bool simplify = false) const;
+ std::string getPath (bool simplify = false) const;
/**
T getValue(typename boost::disable_if_c<simgear::props::PropertyTraits<T>::Internal>
::type* dummy = 0) const;
+ /**
+ * Get a list of values from all children with the given name
+ */
+ template<typename T, typename T_get /* = T */> // TODO use C++11 or traits
+ std::vector<T> getChildValues(const std::string& name) const;
+
+ /**
+ * Get a list of values from all children with the given name
+ */
+ template<typename T>
+ std::vector<T> getChildValues(const std::string& name) const;
+
/**
* Set a bool value for this node.
*/
*/
void fireChildAdded (SGPropertyNode * child);
+ /**
+ * Trigger a child-added and value-changed event for every child (Unlimited
+ * depth) and the node itself.
+ *
+ * It can be used to simulating the creation of a property tree, eg. for
+ * (re)initializing a subsystem which is controlled through the property tree.
+ */
+ void fireCreatedRecursive();
/**
* Fire a child-removed event to all listeners.
*/
void fireChildRemoved (SGPropertyNode * child);
+ /**
+ * Fire a child-removed event for every child of this node (Unlimited depth)
+ *
+ * Upon removal of a child node only for this single node a child-removed
+ * event is triggered. If eg. resource cleanup relies on receiving a
+ * child-removed event for every child this method can be used.
+ */
+ void fireChildrenRemovedRecursive();
+
/**
* Clear any existing value and set the type to NONE.
*/
void trace_write () const;
-
- /**
- * Remove this node from all nodes that link to it in their path cache.
- */
- void remove_from_path_caches();
-
-
- class hash_table;
-
int _index;
std::string _name;
/// To avoid cyclic reference counting loops this shall not be a reference
SGPropertyNode * _parent;
simgear::PropertyList _children;
simgear::PropertyList _removedChildren;
- std::vector<hash_table *> _linkedNodes;
- mutable std::string _path;
mutable std::string _buffer;
- hash_table * _path_cache;
simgear::props::Type _type;
bool _tied;
int _attr;
std::vector<SGPropertyChangeListener *> * _listeners;
-
- /**
- * Register/unregister node that links to this node in its path cache.
- */
- void add_linked_node (hash_table * node) { _linkedNodes.push_back(node); }
- bool remove_linked_node (hash_table * node);
-
-
-\f
- /**
- * A very simple hash table.
- */
- class hash_table {
- public:
-
- /**
- * An entry in a bucket in a hash table.
- */
- class entry {
- public:
- entry ();
- ~entry ();
- const char * get_key () { return _key.c_str(); }
- void set_key (const char * key);
- SGPropertyNode * get_value () { return _value; }
- void set_value (SGPropertyNode * value);
- private:
- std::string _key;
- SGSharedPtr<SGPropertyNode> _value;
- };
-
-
- /**
- * A bucket in a hash table.
- */
- class bucket {
- public:
- bucket ();
- ~bucket ();
- entry * get_entry (const char * key, bool create = false);
- bool erase (SGPropertyNode * node);
- void clear (hash_table * owner);
- private:
- int _length;
- entry ** _entries;
- };
-
- friend class bucket;
-
- hash_table ();
- ~hash_table ();
- SGPropertyNode * get (const char * key);
- void put (const char * key, SGPropertyNode * value);
- bool erase (SGPropertyNode * node);
-
- private:
- unsigned int hashcode (const char * key);
- unsigned int _data_length;
- bucket ** _data;
- };
// Pass name as a pair of iterators
template<typename Itr>
SGPropertyNode * getChildImpl (Itr begin, Itr end, int index = 0, bool create = false);
_type = EXTENDED;
_tied = true;
_value.val = rawValue.clone();
- if (useDefault)
+ if (useDefault) {
+ int save_attributes = getAttributes();
+ setAttribute( WRITE, true );
setValue(old_val);
+ setAttributes( save_attributes );
+ }
return true;
}
return ::getValue<T>(this);
}
+template<typename T, typename T_get /* = T */> // TODO use C++11 or traits
+std::vector<T> SGPropertyNode::getChildValues(const std::string& name) const
+{
+ const simgear::PropertyList& props = getChildren(name);
+ std::vector<T> values( props.size() );
+
+ for( size_t i = 0; i < props.size(); ++i )
+ values[i] = props[i]->getValue<T_get>();
+
+ return values;
+}
+
+template<typename T>
+inline
+std::vector<T> SGPropertyNode::getChildValues(const std::string& name) const
+{
+ return getChildValues<T, T>(name);
+}
+
template<typename T>
bool SGPropertyNode::setValue(const T& val,
typename boost::disable_if_c<simgear::props
};
}
}
+
+/** Convenience class for change listener callbacks without
+ * creating a derived class implementing a "valueChanged" method.
+ * Also removes listener on destruction automatically.
+ */
+template<class T>
+class SGPropertyChangeCallback
+ : public SGPropertyChangeListener
+{
+public:
+ SGPropertyChangeCallback(T* obj, void (T::*method)(SGPropertyNode*),
+ SGPropertyNode_ptr property,bool initial=false)
+ : _obj(obj), _callback(method), _property(property)
+ {
+ _property->addChangeListener(this,initial);
+ }
+ virtual ~SGPropertyChangeCallback()
+ {
+ _property->removeChangeListener(this);
+ }
+ void valueChanged (SGPropertyNode * node)
+ {
+ (_obj->*_callback)(node);
+ }
+private:
+ T* _obj;
+ void (T::*_callback)(SGPropertyNode*);
+ SGPropertyNode_ptr _property;
+};
+
#endif // __PROPS_HXX
// end of props.hxx
projects / simgear.git / blobdiff