vaadin-app: use buttonClick validation + setComponentError

1 files changed, 17 insertions, 1 deletions

diff --git a/vaadin-app/src/ch/asynk/helloworld/HelloWorldApp.java b/vaadin-app/src/ch/asynk/helloworld/HelloWorldApp.java
index 3dfe515..e69967d 100644
--- a/vaadin-app/src/ch/asynk/helloworld/HelloWorldApp.java
+++ b/vaadin-app/src/ch/asynk/helloworld/HelloWorldApp.java
@@ -44,7 +44,7 @@ class DataMappingLayout extends FormLayout {
         //
         Double trouble = 66.6;
         final ObjectProperty<Double> property = new ObjectProperty<Double>(trouble);
-        final TextField tf2 = new TextField("ObjectProperty", property);
+        final TextField tf2 = new TextField("ObjectProperty + Validator", property);
         tf2.setImmediate(true);
         tf2.addValidator( new DoubleValidator("It should be a double") );
         //tf2.setValidationVisible(false);    // nothing will happen
@@ -53,6 +53,22 @@ class DataMappingLayout extends FormLayout {
         lb2.setCaption("The Value");
         addComponent(lb2);
         //
+        final TextField tf3 = new TextField("No spaces");
+        addComponent(tf3);
+        tf3.setComponentError(null); // (actually the default)
+        final Button b1 = new Button("Ok!");
+        addComponent(b1);
+        b1.addListener(new Button.ClickListener() {
+            @Override
+            public void buttonClick(ClickEvent event) {
+                if (! ((String) tf3.getValue()).matches("^\\w*$")) {
+                    tf3.setComponentError(new UserError("Must be letters and numbers"));
+                } else {
+                    tf3.setComponentError(null);
+                }
+            }
+        });
+        //
         Button closeButton = new Button("close the application");
         closeButton.setDescription("This will close the application");
         addComponent(closeButton );