Changed the update name implementation

FXGui/src/fi/jyu/mit/fxgui/ListChooser.java

@@ -194,16 +194,25 @@ public class ListChooser<T> extends ListView<StringAndObject<T>> implements Choo
     }
 
 	/**
+     * Updates the text in the indexed field to the provided name.
+     * @param index Index of the updated field
+     * @param newName the new name to be set
+     */
+    public void updateItemName(int index, String newName) {
+        StringAndObject<T> item = getItems().get(index);
+        item.setName(newName);
+        setSelectedIndex(-1);
+        setSelectedIndex(index);
+    }
+
+    /**
      * Updates the text in the selected field to the provided name.
      * @param newName the new name to be set
      */
     public void updateSelectedName(String newName) {
-        StringAndObject<T> item = getSelectionModel().getSelectedItem();
-        if ( item != null ) {
-            item.setName(newName);
-            int index = this.setSelectedIndex(-1);
-            this.setSelectedIndex(index);
-        }
+        int index = getSelectedIndex();
+        if (index == -1) return;
+        updateItemName(index, newName);
     }