Initial javascript callback support (#6730)

1 files changed, 12 insertions, 0 deletions

diff --git a/src/com/vaadin/ui/Root.java b/src/com/vaadin/ui/Root.java
index 8792bf1912..9814084cbc 100644
--- a/src/com/vaadin/ui/Root.java
+++ b/src/com/vaadin/ui/Root.java
@@ -408,6 +408,8 @@ public abstract class Root extends AbstractComponentContainer implements
     private DirtyConnectorTracker dirtyConnectorTracker = new DirtyConnectorTracker(
             this);
 
+    private JavascriptManager javascriptManager;
+
     private RootServerRpc rpc = new RootServerRpc() {
         public void click(MouseEventDetails mouseDetails) {
             fireEvent(new ClickEvent(Root.this, mouseDetails));
@@ -1590,4 +1592,14 @@ public abstract class Root extends AbstractComponentContainer implements
         return dirtyConnectorTracker;
     }
 
+    public JavascriptManager getJavascriptManager() {
+        if (javascriptManager == null) {
+            // Create and attach on first use
+            javascriptManager = new JavascriptManager();
+            addExtension(javascriptManager);
+        }
+
+        return javascriptManager;
+    }
+
 }