package org.gcube.portlets.user.dataminermanagertester.client.application.monitor;

import org.gcube.portlets.user.dataminermanagertester.client.application.monitor.MonitorRequestEvent.MonitorRequestEventHandler;
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import com.google.gwt.user.client.Timer;

/**
 * 
  * @author Giancarlo Panichi
 *
 *
 */
public class MonitorRequest {
	
	private Timer monitor = null;
	
	private MonitorRequestEventHandler handler;
	
	public MonitorRequest() {
		monitor = new Timer() {
			public void run() {
				executeCommand();
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	private void stopMonitor() {
		if (monitor.isRunning()) {
			monitor.cancel();
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	private void executeCommand() {
		MonitorRequestEvent event = new MonitorRequestEvent();
		handler.onMonitor(event);

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	public void addHandler(MonitorRequestEventHandler handler) {
		this.handler = handler;
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	public void start() {
		startSchedule();
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	private void startSchedule() {
		// Execute the timer to expire 2 seconds in the future
		monitor.schedule(Constants.CLIENT_MONITOR_PERIODMILLIS);

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	public void repeat() {
		monitor.schedule(Constants.CLIENT_MONITOR_PERIODMILLIS);
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	public void stop() {
		stopMonitor();
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