prefer using SplitPaneUtils to get divider location

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

@@ -33,6 +33,7 @@ import fr.soleil.comete.swing.util.EDTManager;
 import fr.soleil.lib.project.ObjectUtils;
 import fr.soleil.lib.project.SystemUtils;
 import fr.soleil.lib.project.swing.Splash;
+import fr.soleil.lib.project.swing.SplitPaneUtils;
 
 public class CometeTrend extends JFrame implements ITrendFileListener {
 
@@ -407,8 +408,10 @@ public class CometeTrend extends JFrame implements ITrendFileListener {
                 });
             } else {
                 if (splitPane != null) {
-                    dividerLocation = splitPane.getDividerLocation()
-                            / (double) (splitPane.getWidth() - splitPane.getDividerSize());
+                    double tmp = SplitPaneUtils.getDividerLocation(splitPane);
+                    if (!Double.isNaN(tmp)) {
+                        dividerLocation = tmp;
+                    }
                     mainPanel.remove(splitPane);
                     splitPane.remove(chartPanel);
                     splitPane = null;