From 7ddaaae38498e4b080f39e8fd751c4a3e2d0fb43 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Johannes=20Dahlstr=C3=B6m?= <johannesd@vaadin.com>
Date: Thu, 15 Jan 2015 17:21:21 +0200
Subject: [PATCH] Parameterize client-side Grid.addColumn to return the
 argument type (#16262)

This allows invoking custom methods on the return value.

Change-Id: I5f2749b792db3627b46e676aee82dc672fec7113
---
 client/src/com/vaadin/client/widgets/Grid.java                | 4 ++--
 .../client/grid/GridColumnAutoWidthClientWidget.java          | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/client/src/com/vaadin/client/widgets/Grid.java b/client/src/com/vaadin/client/widgets/Grid.java
index 7668d43fe0..01decd1386 100644
--- a/client/src/com/vaadin/client/widgets/Grid.java
+++ b/client/src/com/vaadin/client/widgets/Grid.java
@@ -3674,7 +3674,7 @@ public class Grid<T> extends ResizeComposite implements
      *            the column to add
      * @return given column
      */
-    public Column<?, T> addColumn(Column<?, T> column) {
+    public <C extends Column<?, T>> C addColumn(C column) {
         addColumn(column, getColumnCount());
         return column;
     }
@@ -3692,7 +3692,7 @@ public class Grid<T> extends ResizeComposite implements
      *             if Grid's current selection model renders a selection column,
      *             and {@code index} is 0.
      */
-    public Column<?, T> addColumn(Column<?, T> column, int index) {
+    public <C extends Column<?, T>> C addColumn(C column, int index) {
         if (column == selectionColumn) {
             throw new IllegalArgumentException("The selection column many "
                     + "not be added manually");
diff --git a/uitest/src/com/vaadin/tests/widgetset/client/grid/GridColumnAutoWidthClientWidget.java b/uitest/src/com/vaadin/tests/widgetset/client/grid/GridColumnAutoWidthClientWidget.java
index 6fadf95b63..caaed12e70 100644
--- a/uitest/src/com/vaadin/tests/widgetset/client/grid/GridColumnAutoWidthClientWidget.java
+++ b/uitest/src/com/vaadin/tests/widgetset/client/grid/GridColumnAutoWidthClientWidget.java
@@ -63,7 +63,7 @@ public class GridColumnAutoWidthClientWidget extends
     }
 
     private Col addColumn(String header) {
-        Col column = (Col) grid.addColumn(new Col(header));
+        Col column = grid.addColumn(new Col(header));
         grid.getHeaderRow(0).getCell(column)
                 .setHtml("<span>" + header + "</span>");
         return column;
-- 
2.39.5