vaadin-app: implements Validator

1 files changed, 24 insertions, 0 deletions

diff --git a/vaadin-app/src/ch/asynk/helloworld/HelloWorldApp.java b/vaadin-app/src/ch/asynk/helloworld/HelloWorldApp.java
index badf223..ec7ac94 100644
--- a/vaadin-app/src/ch/asynk/helloworld/HelloWorldApp.java
+++ b/vaadin-app/src/ch/asynk/helloworld/HelloWorldApp.java
@@ -14,6 +14,7 @@ import com.vaadin.terminal.gwt.server.ChangeVariablesErrorEvent;
 import com.vaadin.data.Property;
 import com.vaadin.data.Property.ValueChangeEvent;
 import com.vaadin.data.util.ObjectProperty;
+import com.vaadin.data.Validator;
 import com.vaadin.data.validator.DoubleValidator;
 import com.vaadin.ui.FormLayout;
 import com.vaadin.ui.VerticalLayout;
@@ -69,6 +70,29 @@ class DataMappingLayout extends FormLayout {
             }
         });
         //
+        // final Validator intValidator = new Validator() { ... }
+        class MyIntValidator implements Validator {
+            public boolean isValid(Object value) {
+                if (value == null || !(value instanceof String)) {
+                    return false;
+                }
+                return ((String) value).matches("[1-9][0-9]{4}");
+            }
+            public void validate(Object value) throws InvalidValueException {
+                if (!isValid(value)) {
+                    if (value != null && value.toString().startsWith("0")) {
+                        throw new InvalidValueException("Must not start with a zero.");
+                    } else {
+                        throw new InvalidValueException("Must be a number 10000-99999.");
+                    }
+                }
+            }
+        };
+        final TextField tf5 = new TextField("MyIntValidator");
+        tf5.addValidator(new MyIntValidator());
+        tf5.setImmediate(true);
+        addComponent(tf5);
+        //
         class IntegerObjectProperty implements Property {
             Integer data = 0;
             boolean readOnly = false;