Fix Grid unbuffered validation error area theme (#18812)

Change-Id: Ifa37b341b1d49bb7964978a1f2ed0a65efbdcb2a

1 files changed, 13 insertions, 0 deletions

diff --git a/client/src/com/vaadin/client/widgets/Grid.java b/client/src/com/vaadin/client/widgets/Grid.java
index b77299dc17..54d7f86e41 100644
--- a/client/src/com/vaadin/client/widgets/Grid.java
+++ b/client/src/com/vaadin/client/widgets/Grid.java
@@ -1768,6 +1768,8 @@ public class Grid<T> extends ResizeComposite implements
             editorOverlay.appendChild(cellWrapper);
             editorOverlay.appendChild(messageAndButtonsWrapper);
 
+            updateBufferedStyleName();
+
             int frozenColumns = grid.getVisibleFrozenColumnCount();
             double frozenColumnsWidth = 0;
             double cellHeight = 0;
@@ -1948,6 +1950,7 @@ public class Grid<T> extends ResizeComposite implements
             int messageAndButtonsHeight = messageAndButtonsWrapper
                     .getOffsetHeight();
             double bottomOfButtons = trPageBottom + messageAndButtonsHeight;
+
             return bottomOfButtons < tfootPageTop;
         }
 
@@ -1988,6 +1991,16 @@ public class Grid<T> extends ResizeComposite implements
             }
         }
 
+        private void updateBufferedStyleName() {
+            if (isBuffered()) {
+                editorOverlay.removeClassName("unbuffered");
+                editorOverlay.addClassName("buffered");
+            } else {
+                editorOverlay.removeClassName("buffered");
+                editorOverlay.addClassName("unbuffered");
+            }
+        }
+
         protected void setStylePrimaryName(String primaryName) {
             if (styleName != null) {
                 editorOverlay.removeClassName(styleName);