Clears the live area flag that Firefox sets by mistake (#12257)

When selecting a Tab, screen reader reads out all the tabs otherwise

Change-Id: I41d4f6c103daeec06be3828eb27ee479dc92477c

diff --git a/client/src/com/vaadin/client/ui/VTabsheet.java b/client/src/com/vaadin/client/ui/VTabsheet.java
index 729a8c51238a779fbfe9abd77a3360d739047bde..2a949c31af5a7247e62225daee3e9828731a5435 100644 (file)
--- a/client/src/com/vaadin/client/ui/VTabsheet.java
+++ b/client/src/com/vaadin/client/ui/VTabsheet.java
@@ -20,6 +20,7 @@ import java.util.Iterator;
 import java.util.List;
 
 import com.google.gwt.aria.client.Id;
+import com.google.gwt.aria.client.LiveValue;
 import com.google.gwt.aria.client.Roles;
 import com.google.gwt.aria.client.SelectedValue;
 import com.google.gwt.core.client.Scheduler;
@@ -763,6 +764,7 @@ public class VTabsheet extends VTabsheetBase implements Focusable,
         tabs = DOM.createDiv();
         DOM.setElementProperty(tabs, "className", TABS_CLASSNAME);
         Roles.getTablistRole().set(tabs);
+        Roles.getTablistRole().setAriaLiveProperty(tabs, LiveValue.OFF);
         scroller = DOM.createDiv();
         Roles.getTablistRole().setAriaHiddenState(scroller, true);