/*
* Copyright 2000-2016 Vaadin Ltd.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
package com.vaadin.data;
import com.vaadin.event.SerializableEventListener;
import com.vaadin.ui.AbstractComponent;
/**
* Handler for {@link BinderValidationStatus} changes.
* <p>
* {@link Binder#setValidationStatusHandler(BinderValidationStatusHandler) Register} an
* instance of this class to be able to customize validation status handling.
* <p>
* The default handler will show
* {@link AbstractComponent#setComponentError(com.vaadin.server.ErrorMessage) an
* error message} for failed field validations. For bean level validation errors
* it will display the first error message in
* {@link Binder#setStatusLabel(com.vaadin.ui.Label) status label}, if one has
* been set.
*
* @author Vaadin Ltd
*
* @see BinderValidationStatus
* @see Binder#validate()
* @see BindingValidationStatus
*
* @param <BEAN>
* the bean type of binder
*
* @since 8.0
*/
@FunctionalInterface
public interface BinderValidationStatusHandler<BEAN>
extends SerializableEventListener {
/**
* Invoked when the validation status has changed in binder.
*
* @param statusChange
* the changed status
*/
void statusChange(BinderValidationStatus<BEAN> statusChange);
}