Add method to get fully qualified id to Propertys

include/openspace/properties/property.h

@@ -167,6 +167,15 @@ public:
 	 * \return The unique identifier of this Property
 	 */
     const std::string& identifier() const;
+	
+	/**
+	 * Returns the fully qualified name for this Property that uniquely identifies this
+	 * Property within OpenSpace. It consists of the <code>identifier</code> preceded by
+	 * all levels of PropertyOwner%s separated with <code>.</code>; for example:
+	 * <code>owner1.owner2.identifier</code>.
+	 * \return The fully qualified identifier for this Property
+	 */
+	std::string fullyQualifiedIdentifier() const;
 
 	/**
 	 * Returns the PropertyOwner of this Property or <code>nullptr</code>, if it does not
@@ -189,7 +198,7 @@ public:
 	 * key.
 	 * \return The human-readable GUI name for this Property
 	 */
-	const std::string& guiName() const;
+	std::string guiName() const;
 
 	/**
 	 * Sets the identifier of the group that this Property belongs to. Property groups can

src/properties/property.cpp

@@ -22,7 +22,9 @@
 * OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                                         *
 ****************************************************************************************/
 
-#include "openspace/properties/property.h"
+#include <openspace/properties/property.h>
+
+#include <openspace/properties/propertyowner.h>
 
 #include <ghoul/lua/ghoul_lua.h>
 
@@ -63,6 +65,17 @@ const std::string& Property::identifier() const {
     return _identifier;
 }
 
+std::string Property::fullyQualifiedIdentifier() const {
+	std::string identifier = _identifier;
+	PropertyOwner* currentOwner = owner();
+	while (currentOwner) {
+		std::string ownerId = currentOwner->name();
+		identifier = ownerId + "." + identifier;
+		currentOwner = currentOwner->owner();
+	}
+	return identifier;
+}
+
 boost::any Property::get() const {
     return boost::any();
 }
@@ -85,7 +98,7 @@ int Property::typeLua() const {
 	return LUA_TNONE;
 }
 
-const std::string& Property::guiName() const {
+std::string Property::guiName() const {
 	std::string result;
 	_metaData.getValue(_metaDataKeyGuiName, result);
     return std::move(result);