refactoring...

src/main/java/de/srsoftware/web4rail/actions/Action.java

@@ -125,8 +125,17 @@ public abstract class Action extends BaseClass {
 	public String toString() {
 		return t(getClass().getSimpleName());
 	}
-
+	
+	@Override
 	protected Object update(HashMap<String, String> params) {
-		return t("Nothing changed");
+		super.update(params);
+		BaseClass parent = parent();
+		if (isNull(parent)) return properties();
+		if (parent instanceof ActionList) {
+			ActionList al = (ActionList) parent;
+			return al.parent().properties();
+		}
+		return parent.properties();
+		
 	}
 }

src/main/java/de/srsoftware/web4rail/actions/SetSignal.java

@@ -83,14 +83,11 @@ public class SetSignal extends Action {
 	};
 	
 	@Override
-	protected Object update(HashMap<String, String> params) {
-		LOG.debug("update: {}",params);
+	public Object update(HashMap<String, String> params) {		
 		Tile tile = plan.get(new Id(params.get(SIGNAL)), false);
 		if (tile instanceof Signal) signal = (Signal) tile;
 		String st = params.get(Signal.STATE);
 		if (isSet(st)) state = st;
-		return properties();
+		return super.update(params);
 	}
-
-
 }

src/main/java/de/srsoftware/web4rail/actions/SetSpeed.java

@@ -5,7 +5,6 @@ import java.util.List;
 
 import org.json.JSONObject;
 
-import de.srsoftware.tools.Tag;
 import de.srsoftware.web4rail.BaseClass;
 import de.srsoftware.web4rail.Window;
 import de.srsoftware.web4rail.tags.Fieldset;
@@ -59,7 +58,6 @@ public class SetSpeed extends Action{
 
 	@Override
 	protected Object update(HashMap<String, String> params) {
-		LOG.debug("update: {}",params);
 		String error = null;
 		String ms = params.get(MAX_SPEED);
 		if (ms == null) {
@@ -76,7 +74,7 @@ public class SetSpeed extends Action{
 				error = t("Not a valid number!");
 			}
 		}
-		Window win = properties();
-		return new Tag("span").content(error).addTo(win);
+		if (isSet(error)) return error;
+		return super.update(params);
 	}
 }