vaadin-app: use setErrorHandler

1 files changed, 7 insertions, 0 deletions

diff --git a/vaadin-app/src/ch/asynk/helloworld/HelloWorldApp.java b/vaadin-app/src/ch/asynk/helloworld/HelloWorldApp.java
index bf48c5b..badf223 100644
--- a/vaadin-app/src/ch/asynk/helloworld/HelloWorldApp.java
+++ b/vaadin-app/src/ch/asynk/helloworld/HelloWorldApp.java
@@ -107,6 +107,13 @@ class DataMappingLayout extends FormLayout {
         intProperty.setValue(666);
         final TextField tf4 = new TextField("MyObjectProperty",intProperty);
         tf4.setImmediate(true);
+        tf4.setErrorHandler(new ComponentErrorHandler() {
+            @Override
+            public boolean handleComponentError(ComponentErrorEvent event) {
+                tf4.setComponentError(new UserError("Must be an integer (from handler)"));
+                return true;
+            }
+        });
         addComponent(tf4);
         //
         Button closeButton = new Button("close the application");