1 files changed, 25 insertions, 0 deletions
diff --git a/src/de/fhswf/in/inf/se/notepadMinusMinus/view/MainViewController.java b/src/de/fhswf/in/inf/se/notepadMinusMinus/view/MainViewController.java
index 473a273..f0ac2b4 100644
--- a/src/de/fhswf/in/inf/se/notepadMinusMinus/view/MainViewController.java
+++ b/src/de/fhswf/in/inf/se/notepadMinusMinus/view/MainViewController.java
@@ -2,10 +2,12 @@ package de.fhswf.in.inf.se.notepadMinusMinus.view;
 
 import java.io.File;
 import java.math.BigDecimal;
+import java.math.RoundingMode;
 
 import de.fhswf.in.inf.se.notepadMinusMinus.Main;
 import de.fhswf.in.inf.se.notepadMinusMinus.model.Grade;
 import javafx.application.Platform;
+import javafx.collections.ListChangeListener.Change;
 import javafx.fxml.FXML;
 import javafx.scene.control.Button;
 import javafx.scene.control.ComboBox;
@@ -104,6 +106,29 @@ public class MainViewController
    {
       this.main = main;
       gradeTable.setItems(main.getGradeList());
+
+      gradeTable.getItems().addListener((Change<? extends Grade> change) -> {
+         ectsSumLabel.setText("0");
+         averageGradeLabel.setText("0.0");
+         int sumEcts = 0;
+         BigDecimal gradesSumWeighted = BigDecimal.ZERO;
+         for (Grade grade : gradeTable.getItems())
+         {
+            if (grade.getGrade().compareTo(BigDecimal.ZERO) != 0)
+            {
+               sumEcts += grade.getEcts();
+               gradesSumWeighted = gradesSumWeighted.add(grade.getGrade()
+                     .multiply(new BigDecimal(grade.getEcts())));
+            }
+         }
+         if (sumEcts > 0)
+         {
+            ectsSumLabel.setText(String.valueOf(sumEcts));
+            averageGradeLabel.setText(gradesSumWeighted
+                  .divide(new BigDecimal(sumEcts), RoundingMode.HALF_UP)
+                  .toString());
+         }
+      });
    }
 
    @FXML