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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.ui.progressindicator;

import com.google.gwt.user.client.Timer;
import com.vaadin.client.communication.StateChangeEvent;
import com.vaadin.client.ui.VProgressBar;
import com.vaadin.client.ui.VProgressIndicator;
import com.vaadin.shared.ui.Connect;
import com.vaadin.shared.ui.progressindicator.ProgressIndicatorServerRpc;
import com.vaadin.shared.ui.progressindicator.ProgressIndicatorState;
import com.vaadin.ui.ProgressIndicator;

/**
 * Connector for {@link VProgressBar} with polling support.
 * 
 * @since 7.0
 * @author Vaadin Ltd
 * @deprecated as of 7.1, use {@link ProgressBarConnector} combined with server
 *             push or UI polling.
 */
@Connect(ProgressIndicator.class)
@Deprecated
public class ProgressIndicatorConnector extends ProgressBarConnector {

    @Override
    public ProgressIndicatorState getState() {
        return (ProgressIndicatorState) super.getState();
    }

    private Timer poller = new Timer() {

        @Override
        public void run() {
            getRpcProxy(ProgressIndicatorServerRpc.class).poll();
        }

    };

    @Override
    public void onStateChanged(StateChangeEvent stateChangeEvent) {
        super.onStateChanged(stateChangeEvent);

        if (isEnabled()) {
            poller.scheduleRepeating(getState().pollingInterval);
        } else {
            poller.cancel();
        }
    }

    @Override
    public VProgressIndicator getWidget() {
        return (VProgressIndicator) super.getWidget();
    }

    @Override
    public void onUnregister() {
        super.onUnregister();
        poller.cancel();
    }
}