added JScrollPane for attributes tree (CONTROLGUI-390)

src/main/java/fr/soleil/comete/bean/trend/view/CometeTrend.java

@@ -36,7 +36,7 @@ import fr.soleil.lib.project.swing.Splash;
 
 public class CometeTrend extends JFrame implements ITrendFileListener {
 
-    private static final long serialVersionUID = 2581054961564129497L;
+    private static final long serialVersionUID = -4976136351985828913L;
 
     private static final Logger LOGGER = LoggerFactory.getLogger(CometeTrend.class);
 
@@ -62,6 +62,7 @@ public class CometeTrend extends JFrame implements ITrendFileListener {
     private TrendMenu trendMenu;
     private ChartPanel chartPanel;
     private TrendTreePanel attributeTree;
+    private JScrollPane attributeTreeScrollPane;
     private JSplitPane splitPane;
     private JTextArea console;
     private JScrollPane consoleScrollPane;
@@ -140,13 +141,14 @@ public class CometeTrend extends JFrame implements ITrendFileListener {
     }
 
     private void initSplitPane() {
-        splitPane = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT, attributeTree, chartPanel);
+        splitPane = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT, attributeTreeScrollPane, chartPanel);
         splitPane.setOneTouchExpandable(true);
         splitPane.setDividerLocation(dividerLocation);
     }
 
     private void initAttributeTree() {
         attributeTree = new TrendTreePanel(controller, trendMenu.getAddAttributesAction());
+        attributeTreeScrollPane = new JScrollPane(attributeTree);
     }
 
     private void initTrendMenu() {