/*
* Copyright 2010 Google Inc.
*
* 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.google.gwt.user.client.ui;
import java.util.Collection;
/**
* Implemented by widgets that pick from a set of values.
* <p>
* It is up to the implementation to decide (and document) how to behave when
* {@link #setValue(Object)} is called with a value that is not in the
* acceptable set. For example, throwing an {@link IllegalArgumentException}, or
* quietly adding the value to the acceptable set, are both reasonable choices.
*
* @param <T> the type of value
*/
public interface HasConstrainedValue<T> extends HasValue<T> {
/**
* Set the acceptable values.
*
* @param values the acceptible values
*/
void setAcceptableValues(Collection<T> values);
}