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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 2000-2014 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.client;

/**
 * Give widgets the possibility to indicate to the framework that there is work
 * scheduled to be executed in the near future and that the framework should
 * wait for this work to complete before assuming the UI has reached a steady
 * state.
 * 
 * @since 7.3
 * @author Vaadin Ltd
 */
public interface DeferredWorker {
    /**
     * Checks whether there are operations pending for this widget that must be
     * executed before reaching a steady state.
     * 
     * @returns true iff there are operations pending which must be
     *          executed before reaching a steady state
     */
    public boolean isWorkPending();
}