From f9e4773ea3d68a0ed665430f6fa1ae8cd8f579ee Mon Sep 17 00:00:00 2001
From: Matti Tahvonen <matti.tahvonen@itmill.com>
Date: Wed, 9 Apr 2008 08:33:01 +0000
Subject: [PATCH] fixes #1555

svn changeset:4150/svn branch:trunk
---
 .../itmill/toolkit/terminal/PaintTarget.java   | 18 ++++++++++++++++++
 .../terminal/gwt/server/JsonPaintTarget.java   |  6 ++++++
 2 files changed, 24 insertions(+)

diff --git a/src/com/itmill/toolkit/terminal/PaintTarget.java b/src/com/itmill/toolkit/terminal/PaintTarget.java
index f2a29401ad..a62407473d 100644
--- a/src/com/itmill/toolkit/terminal/PaintTarget.java
+++ b/src/com/itmill/toolkit/terminal/PaintTarget.java
@@ -55,6 +55,24 @@ public interface PaintTarget {
     public boolean startTag(Paintable paintable, String tag)
             throws PaintException;
 
+    /**
+     * Paints a component reference as an attribute to current tag. This method
+     * is meant to enable component interactions on client side. With reference
+     * the client side component can communicate directly to other component.
+     * 
+     * Note! This is still an experimental feature and API is likely to change
+     * in future.
+     * 
+     * @param paintable
+     *                the Paintable to reference
+     * @param referenceName
+     * @throws PaintException
+     * 
+     * @since 5.2
+     */
+    public void paintReference(Paintable paintable, String referenceName)
+            throws PaintException;
+
     /**
      * Prints element start tag.
      * 
diff --git a/src/com/itmill/toolkit/terminal/gwt/server/JsonPaintTarget.java b/src/com/itmill/toolkit/terminal/gwt/server/JsonPaintTarget.java
index 867f8d9907..67f0f5df03 100644
--- a/src/com/itmill/toolkit/terminal/gwt/server/JsonPaintTarget.java
+++ b/src/com/itmill/toolkit/terminal/gwt/server/JsonPaintTarget.java
@@ -783,6 +783,12 @@ public class JsonPaintTarget implements PaintTarget {
         return cacheEnabled && isPreviouslyPainted;
     }
 
+    public void paintReference(Paintable paintable, String referenceName)
+            throws PaintException {
+        final String id = manager.getPaintableId(paintable);
+        addAttribute(referenceName, id);
+    }
+
     /**
      * @see com.itmill.toolkit.terminal.PaintTarget#addCharacterData(java.lang.String)
      */
-- 
2.39.5