From 600d5b436d7ca33840b1b697082d140a5040bdf3 Mon Sep 17 00:00:00 2001
From: Patrik Lindström <patrik@vaadin.com>
Date: Mon, 25 Aug 2014 14:44:12 +0300
Subject: Add keyboard sorting controls (#13334)

Change-Id: Icb0ef5d70b5469cd87bdd079fe16f31b8cf769f1
---
 .../com/vaadin/shared/ui/grid/SortDirection.java    | 21 +++++++++++++++++++--
 1 file changed, 19 insertions(+), 2 deletions(-)

(limited to 'shared')

diff --git a/shared/src/com/vaadin/shared/ui/grid/SortDirection.java b/shared/src/com/vaadin/shared/ui/grid/SortDirection.java
index 0b4eafc37f..9aed268d01 100644
--- a/shared/src/com/vaadin/shared/ui/grid/SortDirection.java
+++ b/shared/src/com/vaadin/shared/ui/grid/SortDirection.java
@@ -28,10 +28,27 @@ public enum SortDirection implements Serializable {
     /**
      * Ascending (e.g. A-Z, 1..9) sort order
      */
-    ASCENDING,
+    ASCENDING {
+        @Override
+        public SortDirection getOpposite() {
+            return DESCENDING;
+        }
+    },
 
     /**
      * Descending (e.g. Z-A, 9..1) sort order
      */
-    DESCENDING
+    DESCENDING {
+        @Override
+        public SortDirection getOpposite() {
+            return ASCENDING;
+        }
+    };
+
+    /**
+     * Get the sort direction that is the direct opposite to this one.
+     * 
+     * @return a sort direction value
+     */
+    public abstract SortDirection getOpposite();
 }
-- 
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