1 files changed, 34 insertions, 0 deletions
diff --git a/src/com/vaadin/terminal/AbstractJavaScriptExtension.java b/src/com/vaadin/terminal/AbstractJavaScriptExtension.java
new file mode 100644
index 0000000000..a2f8019858
--- /dev/null
+++ b/src/com/vaadin/terminal/AbstractJavaScriptExtension.java
@@ -0,0 +1,34 @@
+/* 
+@VaadinApache2LicenseForJavaFiles@
+ */
+
+package com.vaadin.terminal;
+
+import com.vaadin.terminal.gwt.client.JavaScriptExtensionState;
+import com.vaadin.ui.JavaScriptCallback;
+
+public class AbstractJavaScriptExtension extends AbstractExtension {
+    private JavaScriptCallbackHelper callbackHelper = new JavaScriptCallbackHelper(
+            this);
+
+    @Override
+    protected <T> void registerRpc(T implementation,
+            java.lang.Class<T> rpcInterfaceType) {
+        super.registerRpc(implementation, rpcInterfaceType);
+        callbackHelper.registerRpc(rpcInterfaceType);
+    }
+
+    protected void registerCallback(String functionName,
+            JavaScriptCallback javaScriptCallback) {
+        callbackHelper.registerCallback(functionName, javaScriptCallback);
+    }
+
+    protected void invokeCallback(String name, Object... arguments) {
+        callbackHelper.invokeCallback(name, arguments);
+    }
+
+    @Override
+    public JavaScriptExtensionState getState() {
+        return (JavaScriptExtensionState) super.getState();
+    }
+}