About the template pattern update.

package j379s7ev$v3.consts;
public class MyConsts {
	public final static String EVENTQUEUE_CONNECTION = "connection";
	public final static String EVENT_MESSAGE_1 = "sendMessage1";
}

package j379s7ev$v3;
import j379s7ev$v3.consts.MyConsts;
import org.zkoss.zk.ui.Component;
import org.zkoss.zk.ui.event.Event;
import org.zkoss.zk.ui.event.EventListener;
import org.zkoss.zk.ui.event.EventQueue;
import org.zkoss.zk.ui.event.EventQueues;
import org.zkoss.zk.ui.util.GenericForwardComposer;
import org.zkoss.zul.Label;

public class Include2Composer extends GenericForwardComposer{
	private Label lbl;
	/*
	 * create "connection" EventQueue  , all the "connection" EventQueue could talke to each other.
	 * 
         *   (You could change the naming of "connection" to anything you like. ;) )
         *
	 * Note: we use desktop level EventQueue , only EventQueue in the same desktop will get the published event.
	 *
         *      That means if there are different session or different desktop , it won't have any side effect to others.
                But if you are using "application scope" EventQueue , you have to take care of taht.
         *
	 * 
	 * More reference.
	 * http://books.zkoss.org/wiki/ZK_Developer's_Reference/Event_Handling/Event_Queues
	 */
	private EventQueue qe= EventQueues.lookup(MyConsts.EVENTQUEUE_CONNECTION,true);
 
	public void doAfterCompose(Component comp) throws Exception {
		super.doAfterCompose(comp);
 
 
		//subcribe event 
		qe.subscribe(new EventListener() {
			public void onEvent(Event event) throws Exception {
				//If you have many event go through this event queue,
                                // you have to handle the event name by yourself now.
 
				//All the event will publish to every subcriber.
				if(MyConsts.EVENT_MESSAGE_1.equals(event.getName())){
					//Recieved from Include1
                                        String message = (String) event.getData();
					lbl.setValue(message);
 
				}
			}
		});
	}
}

package j379s7ev$v3;
import j379s7ev$v3.consts.MyConsts;
import org.zkoss.zk.ui.event.Event;
import org.zkoss.zk.ui.event.EventQueue;
import org.zkoss.zk.ui.event.EventQueues;
import org.zkoss.zk.ui.util.GenericForwardComposer;
import org.zkoss.zul.Textbox;
public class Include1Composer extends GenericForwardComposer {
	private Textbox msg;
	/*
	 * create "connection" EventQueue  , all the "connection" EventQueue could talke to each other.
	 * 
         *   (You could change the naming of "connection" to anything you like. ;) )
         *
	 * Note: we use desktop level EventQueue , only EventQueue in the same desktop will get the published event.
	 *
         *      That means if there are different session or different desktop , it won't have any side effect to others.
                But if you are using "application scope" EventQueue , you have to take care of taht.
         *
	 * 
	 * More reference.
	 * http://books.zkoss.org/wiki/ZK_Developer's_Reference/Event_Handling/Event_Queues
	 */
	EventQueue qe = EventQueues.lookup(MyConsts.EVENTQUEUE_CONNECTION, true);
	public void onClick$btn(Event e) {
		//publish event to include1 by connection EventQueue
                //Note here the third argument is event data , you could get the event from reciever.
                //if you need to pass multiple objects , you could consider to pass a List/Map. 
 
		qe.publish(new Event(MyConsts.EVENT_MESSAGE_1,null,msg.getValue()));
	}
}

<?page title="Include talk by event queue sample - include2 " ?>
<zk>
	<div apply="j379s7ev$v3.Include2Composer">
		<div>
			<zscript>
				Date d = new Date();
			</zscript>
			Last Invalidate:${d}
		</div>
		Received from Include.zul ：<label id="lbl" ></label>
	</div>

</zk>

<?page title="Include talk by event queue sample - include1 " ?>
<zk>
 
	<div apply="j379s7ev$v3.Include1Composer">
		<div>
			<zscript>
				Date d = new Date();
			</zscript>
			Last Invalidate:${d}
		</div>
		<textbox id="msg" value="test" ></textbox>
		<button id="btn" label="Send message to Include2" ></button>
 
	</div>
</zk>

<?page title="Include talk by event queue sample" ?>
<zk>

	<vlayout>
		<groupbox >
			<caption label="Include.zul" />
			<include src="include.zul" />
		</groupbox>
 
		<groupbox >
			<caption label="Include2.zul" />
			<include src="include2.zul" />
		</groupbox>
	</vlayout>
</zk>