ArViz Intro: show flag combinations

source/RobotAPI/components/ArViz/Introspection/json_elements.cpp

 #include "json_elements.h"
 
+#include <boost/algorithm/string.hpp>
+
 #include <ArmarXCore/core/exceptions/local/ExpressionException.h>
 
 #include "json_base.h"
@@ -199,13 +201,44 @@ namespace armarx::viz
     }
 
 
+    namespace data::ModelDrawStyle
+    {
+        std::string to_flag_names(const int drawStyle)
+        {
+            std::vector<std::string> flag_names;
+            for (int flag : names.values())
+            {
+                if (drawStyle == flag  // Necessary if flag is 0
+                    || drawStyle & flag)
+                {
+                    flag_names.push_back(names.to_name(flag));
+                }
+            }
+            return boost::join(flag_names, " | ");
+        }
+
+        int from_flag_names(const std::string& flagString)
+        {
+            std::vector<std::string> split;
+            boost::split(split, flagString, boost::is_any_of("|"));
+            int flag = 0;
+            for (auto& s : split)
+            {
+                boost::algorithm::trim(s);
+                flag |= names.from_name(s);
+            }
+            return flag;
+        }
+    }
+
+
     void data::to_json(nlohmann::json& j, const ElementObject& object)
     {
         json::to_json_base(j, object);
         j["project"] = object.project;
         j["filename"] = object.filename;
 
-        j["drawStyle"] = ModelDrawStyle::names.to_name(object.drawStyle);
+        j["drawStyle"] = ModelDrawStyle::to_flag_names(object.drawStyle) + " (" + std::to_string(object.drawStyle) + ")";
         j[json::meta::KEY]["drawStyle"] = json::meta::READ_ONLY;
     }
     void data::from_json(const nlohmann::json& j, ElementObject& object)
@@ -213,7 +246,7 @@ namespace armarx::viz
         json::from_json_base(j, object);
         object.project = j.at("project");
         object.filename = j.at("filename");
-        object.drawStyle = ModelDrawStyle::names.from_name(j.at("drawStyle"));
+        object.drawStyle = ModelDrawStyle::from_flag_names(j.at("drawStyle"));
     }
 
 
@@ -224,7 +257,7 @@ namespace armarx::viz
         j["filename"] = robot.filename;
         j["jointValues"] = robot.jointValues;
 
-        j["drawStyle"] = ModelDrawStyle::names.to_name(robot.drawStyle);
+        j["drawStyle"] = ModelDrawStyle::to_flag_names(robot.drawStyle);
         j[json::meta::KEY]["drawStyle"] = json::meta::READ_ONLY;
     }
     void data::from_json(const nlohmann::json& j, ElementRobot& robot)
@@ -233,7 +266,7 @@ namespace armarx::viz
         robot.project = j.at("project");
         robot.filename = j.at("filename");
         robot.jointValues = j.at("jointValues").get<armarx::StringFloatDictionary>();
-        robot.drawStyle = ModelDrawStyle::names.from_name(j.at("drawStyle"));
+        robot.drawStyle = ModelDrawStyle::from_flag_names(j.at("drawStyle"));
     }
 
 }