[PATCH 2 of 9] Actually check if there are no items instead of no data

[Wald Commits]

# HG changeset patch
# User Andre Heinecke <andre.heinecke at intevation.de>
# Date 1427364408 -3600
# Node ID 289486a43be8ba4d1a62b67bf28fe184dc3ef3f1
# Parent  124efb3eea94350e68959c5844072b3d0e6abbf2
Actually check if there are no items instead of no data.

diff -r 124efb3eea94 -r 289486a43be8 gwt-client/src/main/java/org/dive4elements/river/client/client/ui/PeriodPanel.java
--- a/gwt-client/src/main/java/org/dive4elements/river/client/client/ui/PeriodPanel.java	Thu Mar 26 11:06:13 2015 +0100
+++ b/gwt-client/src/main/java/org/dive4elements/river/client/client/ui/PeriodPanel.java	Thu Mar 26 11:06:48 2015 +0100
@@ -95,9 +95,9 @@
         layout.addMember(form);
 
         /* Try to find default values for the periods */
-        Data start = getData(data.getAll(), "start");
-        Data end = getData(data.getAll(), "end");
-        if (start == null || end == null) {
+        Data start = getData(data.getAll(), startName);
+        Data end = getData(data.getAll(), endName);
+        if (start.getItems() == null || end.getItems() == null) {
             return layout;
         }