Support screen reader only notifications (#11830)

Change-Id: I09391b27c0b3df538ffe74c4edb8d96224f14cd3

4 files changed, 31 insertions, 3 deletions

diff --git a/client/src/com/vaadin/client/ui/VNotification.java b/client/src/com/vaadin/client/ui/VNotification.java
index 0ddc8bf7c5..128de0a285 100644
--- a/client/src/com/vaadin/client/ui/VNotification.java
+++ b/client/src/com/vaadin/client/ui/VNotification.java
@@ -52,6 +52,12 @@ public class VNotification extends VOverlay {
     public static final Position BOTTOM_LEFT = Position.BOTTOM_LEFT;
     public static final Position BOTTOM_RIGHT = Position.BOTTOM_RIGHT;
 
+    /**
+     * Position that is only accessible for assistive devices, invisible for
+     * visual users.
+     */
+    public static final Position ASSISTIVE = Position.ASSISTIVE;
+
     public static final int DELAY_FOREVER = -1;
     public static final int DELAY_NONE = 0;
 
@@ -315,6 +321,10 @@ public class VNotification extends VOverlay {
             DOM.setStyleAttribute(el, "top", "");
             DOM.setStyleAttribute(el, "bottom", "0px");
             break;
+        case ASSISTIVE:
+            DOM.setStyleAttribute(el, "top", "-2000px");
+            DOM.setStyleAttribute(el, "left", "-2000px");
+            break;
         default:
         case MIDDLE_CENTER:
             center();
diff --git a/server/src/com/vaadin/ui/Notification.java b/server/src/com/vaadin/ui/Notification.java
index f9bb1521e7..31fa265b02 100644
--- a/server/src/com/vaadin/ui/Notification.java
+++ b/server/src/com/vaadin/ui/Notification.java
@@ -64,7 +64,7 @@ import com.vaadin.shared.ui.ui.NotificationConfigurationBean.Role;
  */
 public class Notification implements Serializable {
     public enum Type {
-        HUMANIZED_MESSAGE, WARNING_MESSAGE, ERROR_MESSAGE, TRAY_NOTIFICATION;
+        HUMANIZED_MESSAGE, WARNING_MESSAGE, ERROR_MESSAGE, TRAY_NOTIFICATION, ASSISTIVE_NOTIFICATION;
     }
 
     @Deprecated
@@ -205,6 +205,12 @@ public class Notification implements Serializable {
             styleName = "tray";
             setNavigationConfiguration("Info: ", "", Role.STATUS);
             break;
+        case ASSISTIVE_NOTIFICATION:
+            delayMsec = 3000;
+            position = Position.ASSISTIVE;
+            styleName = "assistive";
+            setNavigationConfiguration("Note: ", "", Role.ALERT);
+            break;
         case HUMANIZED_MESSAGE:
         default:
             styleName = "humanized";
@@ -446,6 +452,10 @@ public class Notification implements Serializable {
             break;
         case TRAY_NOTIFICATION:
             style = "tray";
+            break;
+        case ASSISTIVE_NOTIFICATION:
+            style = "assistive";
+            break;
         case HUMANIZED_MESSAGE:
         default:
             style = "humanized";
@@ -548,4 +558,4 @@ public class Notification implements Serializable {
     public static void show(String caption, String description, Type type) {
         new Notification(caption, description, type).show(Page.getCurrent());
     }
-}
\ No newline at end of file
+}
diff --git a/shared/src/com/vaadin/shared/Position.java b/shared/src/com/vaadin/shared/Position.java
index cd34ee8b87..3df42d65d8 100755
--- a/shared/src/com/vaadin/shared/Position.java
+++ b/shared/src/com/vaadin/shared/Position.java
@@ -16,5 +16,10 @@
 package com.vaadin.shared;
 
 public enum Position {
-    TOP_LEFT, TOP_CENTER, TOP_RIGHT, MIDDLE_LEFT, MIDDLE_CENTER, MIDDLE_RIGHT, BOTTOM_LEFT, BOTTOM_CENTER, BOTTOM_RIGHT;
+    TOP_LEFT, TOP_CENTER, TOP_RIGHT, MIDDLE_LEFT, MIDDLE_CENTER, MIDDLE_RIGHT, BOTTOM_LEFT, BOTTOM_CENTER, BOTTOM_RIGHT,
+    /**
+     * Position that is only accessible for assistive devices, invisible for
+     * visual users.
+     **/
+    ASSISTIVE;
 }
diff --git a/uitest/src/com/vaadin/tests/components/notification/NotificationsWaiAria.java b/uitest/src/com/vaadin/tests/components/notification/NotificationsWaiAria.java
index a8861d40de..27af49a397 100644
--- a/uitest/src/com/vaadin/tests/components/notification/NotificationsWaiAria.java
+++ b/uitest/src/com/vaadin/tests/components/notification/NotificationsWaiAria.java
@@ -63,6 +63,9 @@ public class NotificationsWaiAria extends TestBase {
         item = type.addItem(Notification.TYPE_TRAY_NOTIFICATION);
         item.getItemProperty(CAPTION).setValue("Tray");
 
+        item = type.addItem(Notification.Type.ASSISTIVE_NOTIFICATION);
+        item.getItemProperty(CAPTION).setValue("Assistive");
+
         type.setValue(type.getItemIds().iterator().next());
         addComponent(type);