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.
*/
*/
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);
+ 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
+ */
+ 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.
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.
std::vector<SGPropertyChangeListener *> * _listeners;
-\f
// Pass name as a pair of iterators
template<typename Itr>
SGPropertyNode * getChildImpl (Itr begin, Itr end, int index = 0, bool create = false);
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