Added convenience methods for bean binding (#13068)

Reduces common bean binding code from 4 lines to 1

Change-Id: Ie5f20ec2791284b850a9f3e11e21face3b5e4276

1 files changed, 54 insertions, 0 deletions

diff --git a/server/src/com/vaadin/data/fieldgroup/BeanFieldGroup.java b/server/src/com/vaadin/data/fieldgroup/BeanFieldGroup.java
index cb8a044f00..6616f9f24e 100644
--- a/server/src/com/vaadin/data/fieldgroup/BeanFieldGroup.java
+++ b/server/src/com/vaadin/data/fieldgroup/BeanFieldGroup.java
@@ -225,4 +225,58 @@ public class BeanFieldGroup<T> extends FieldGroup {
         }
         return beanValidationImplementationAvailable;
     }
+
+    /**
+     * Convenience method to bind Fields from a given "field container" to a
+     * given bean with buffering disabled.
+     * <p>
+     * The returned {@link BeanFieldGroup} can be used for further
+     * configuration.
+     * 
+     * @see #bindFieldsBuffered(Object, Object)
+     * @see #bindMemberFields(Object)
+     * @since 7.2
+     * @param bean
+     *            the bean to be bound
+     * @param objectWithMemberFields
+     *            the class that contains {@link Field}s for bean properties
+     * @return the bean field group used to make binding
+     */
+    public static <T> BeanFieldGroup<T> bindFieldsUnbuffered(T bean,
+            Object objectWithMemberFields) {
+        return createAndBindFields(bean, objectWithMemberFields, false);
+    }
+
+    /**
+     * Convenience method to bind Fields from a given "field container" to a
+     * given bean with buffering enabled.
+     * <p>
+     * The returned {@link BeanFieldGroup} can be used for further
+     * configuration.
+     * 
+     * @see #bindFieldsUnbuffered(Object, Object)
+     * @see #bindMemberFields(Object)
+     * @since 7.2
+     * @param bean
+     *            the bean to be bound
+     * @param objectWithMemberFields
+     *            the class that contains {@link Field}s for bean properties
+     * @return the bean field group used to make binding
+     */
+    public static <T> BeanFieldGroup<T> bindFieldsBuffered(T bean,
+            Object objectWithMemberFields) {
+        return createAndBindFields(bean, objectWithMemberFields, true);
+    }
+
+    private static <T> BeanFieldGroup<T> createAndBindFields(T bean,
+            Object objectWithMemberFields, boolean buffered) {
+        @SuppressWarnings("unchecked")
+        BeanFieldGroup<T> beanFieldGroup = new BeanFieldGroup<T>(
+                (Class<T>) bean.getClass());
+        beanFieldGroup.setItemDataSource(bean);
+        beanFieldGroup.setBuffered(buffered);
+        beanFieldGroup.bindMemberFields(objectWithMemberFields);
+        return beanFieldGroup;
+    }
+
 }