Refactor Canvas and add some helpers.

[simgear.git] / simgear / props / props.hxx

diff --git a/simgear/props/props.hxx b/simgear/props/props.hxx
index 6a0f1f93785c541cf79b3308706837203535fd57..f2692710de76cf13d9043d68c8132d8a9944b9d1 100644 (file)
--- a/simgear/props/props.hxx
+++ b/simgear/props/props.hxx
@@ -1162,6 +1162,18 @@ public:
   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.
    */
@@ -1846,6 +1858,25 @@ inline T SGPropertyNode::getValue(typename boost::enable_if_c<simgear::props
   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