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Vaadin is a web application framework for Rich Internet Applications (RIA). Vaadin enables easy development and maintenance of fast and secure rich web applications with a stunning look and feel and a wide browser support. It features a server-side architecture with the majority of the logic running on the server. Ajax technology is used at the browser-side to ensure a rich and interactive user experience.

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/*
 * 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.cell.client;

/**
 * A {@link FieldUpdater} may be added to a Column to update a particular field
 * of a data item.
 * 
 * @param  the data type that will be modified
 * @param  the data type of the modified field
 */
public interface FieldUpdater {

  /**
   * Announces a new value for a field within a base object.
   * 
   * @param index the current row index of the object
   * @param object the base object to be updated
   * @param value the new value of the field being updated
   */
  void update(int index, T object, C value);
}