added a sample nested controller

src/main/java/kellerkinder/HomeFlix/application/FilmDetailView.java

@@ -0,0 +1,18 @@
+package kellerkinder.HomeFlix.application;
+
+import javafx.fxml.FXML;
+import javafx.scene.control.Label;
+
+public class FilmDetailView {
+	
+	@FXML private Label lblFilm;
+	
+	public void initialize() {
+		System.out.println("init nested controller");
+	}
+	
+	public void foo() {
+		System.out.println("test");
+	}
+
+}

src/main/java/kellerkinder/HomeFlix/application/Main.java

@@ -34,6 +34,7 @@ import javafx.application.Application;
 import javafx.event.ActionEvent;
 import javafx.event.EventHandler;
 import javafx.fxml.FXMLLoader;
+import javafx.scene.Parent;
 import javafx.scene.Scene;
 import javafx.scene.image.Image;
 import javafx.scene.layout.AnchorPane;

src/main/java/kellerkinder/HomeFlix/application/MainWindowController.java

@@ -163,6 +163,9 @@ public class MainWindowController {
 	// poster-mode
 	@FXML private ScrollPane posterModeScrollPane;
 	@FXML private FlowPane posterModeFlowPane;
+
+	// FilmDetailView
+	@FXML private FilmDetailView filmDetailViewController;
 	
 	private DBController dbController;
 	private UpdateController updateController;
@@ -498,6 +501,7 @@ public class MainWindowController {
 	@FXML
 	private void returnBtnclicked() {
 		filmsTreeTable.getSelectionModel().select(last);
+		filmDetailViewController.foo();
 	}
 
 	@FXML