AddOrUpdateMessageComposer.java

package org.zkoss.usergroup.composer;

import org.zkoss.usergroup.dao.IMessageDao;
import org.zkoss.usergroup.dao.MessageDaoImpl;
import org.zkoss.usergroup.model.Message;
import org.zkoss.zk.ui.Component;
import org.zkoss.zk.ui.event.Event;
import org.zkoss.zk.ui.event.Events;
import org.zkoss.zk.ui.event.ForwardEvent;
import org.zkoss.zk.ui.util.GenericForwardComposer;
import org.zkoss.zul.Textbox;
import org.zkoss.zul.Window;

public class AddOrUpdateMessageComposer extends GenericForwardComposer {

	private Textbox name;

	private Textbox email;

	private Textbox content;

	private Long id;

	public void onShowAdd$addForm(ForwardEvent e) {
		self.setVisible(true);
		id = null;
		try {
			((Window) self).doModal();
		} catch (Exception e1) {
			e1.printStackTrace();
			throw new RuntimeException(e1);
		}
	}

	public void onShowUpdate$addForm(ForwardEvent e) {
		self.setVisible(true);
		
		if(e.getOrigin()!=null)
			id = (Long) e.getOrigin().getData();
		
		IMessageDao dao = new MessageDaoImpl();
		
		Message current = dao.get(id);

		name.setRawValue(current.getName());
		email.setRawValue(current.getEmail());
		content.setRawValue(current.getContent());
		try {
			((Window) self).doModal();
		} catch (Exception e1) {
			e1.printStackTrace();
			throw new RuntimeException(e1);
		}
	}

	@Override
	public void doAfterCompose(Component comp) throws Exception {
		super.doAfterCompose(comp);
	}

	public void onOK$addForm(Event e) {
		MessageDaoImpl dao = new MessageDaoImpl();
		
		Message m = null;
		if(id!= null){
			m = dao.get(id);
			m.setContent(content.getText());
			m.setEmail(email.getText());
			m.setName(name.getText());
		}else{
			m = new Message(id, name.getText(), email.getText(), content.getText(), null);
		}
		dao.saveOrUdate(m);

		Events.postEvent(new Event("onAfterInsert", self));
		name.setRawValue("");
		email.setRawValue("");
		content.setRawValue("");
		self.setVisible(false);

	}
}

index.zul

<?page title="Hello ZK Messageboard"?>
<window title="Hello World!!" border="normal" >

	<label value="Welcome to ZK Messageboard." />
	
	<grid id="list">
		<columns>
			<column label="Messages "/>
		</columns>

	</grid>
	<zscript><![CDATA[
		import java.util.*;
		import org.zkoss.usergroup.model.*;
		import org.zkoss.usergroup.dao.*;
		
		MessageDaoImpl dao = new MessageDaoImpl();

		list.setModel(new ListModelList(dao.list()));
		//it might be a bug for ZK studio.
		list.setRowRenderer(new RowRenderer() {
			public void render(Row row, Object obj) {
				Message model = (Message) obj;
				Vlayout layout = new Vlayout();
				layout.appendChild(new Label("#" + model.getId() + "     " + 
						model.getName() +
						"("+ model.getEmail() +")      "+ model.getCreateDate().toString() ));
				layout.appendChild(new Html("<div>"+model.getContent()+"</div>"));
				row.appendChild(layout);
			}
		});
	
	]]></zscript>	
	
	<button label="add new message" onClick="addForm.doModal();" />
	<window id="addForm" visible="false" closable="true" title="hello">
		<label value="hello " />
	
	</window>
</window>