Stop stealing focus on input elements inside Grid.

vaadin-components-gwt/src/main/java/com/vaadin/components/grid/ViolatedGrid.java

@@ -2,6 +2,7 @@
 
 import com.google.gwt.dom.client.Document;
 import com.google.gwt.dom.client.Element;
+import com.google.gwt.dom.client.EventTarget;
 import com.google.gwt.dom.client.IFrameElement;
 import com.google.gwt.query.client.GQuery;
 import com.google.gwt.user.client.DOM;
@@ -117,11 +118,24 @@ private static int getWidgetUtilNativeScrollbarSize() {
 
     @Override
     public void onBrowserEvent(Event event) {
+
         // clicking on the select all checkbox moves focus away from the grid
         // causing the :focus transition effect to be reapplied. Forcing focus on the grid
-        // will mitigate the issue. Grid should always keep the focus anyways when interacting with it.
-        getElement().focus();
+        // will mitigate the issue.
+        focusGridIfSelectAllClicked(event);
 
         super.onBrowserEvent(event);
     }
+
+    private void focusGridIfSelectAllClicked(Event event) {
+        EventTarget target = event.getEventTarget();
+        if(Element.is(target)) {
+            Element targetElement = Element.as(target);
+
+            // Currently targeting all gwt-checkboxes, might need refinement in the future.
+            if(targetElement.getParentElement().hasClassName("gwt-CheckBox")) {
+                getElement().focus();
+            }
+        }
+    }
 }