HTML links. Following the analogy with GUI frameworks, we can consider Wicket link as a “click” event handler: its purpose is to perform some actions (on server side!) when the user clicks on it. That paragraph we had a first taste of Wicket links and we have seen how they can be considered as a “click” event listener and how they can be used to navigate from a page to another. 13 Chapter 5. Wicket as page helloWorld.layoutTenda; import helloWorld.LoginPanel; import org.apache.wicket.event.Broadcast; import org.apache.wicket.event.IEventSink; public class SimpleLoginPage extends JugTemplate { public SimpleLoginPage(){

HTML links. Following the analogy with GUI frameworks, we can consider Wicket link as a “click” event handler: its purpose is to perform some actions (on server side!) when the user clicks on it. That paragraph we had a first taste of Wicket links and we have seen how they can be considered as a “click” event listener and how they can be used to navigate from a page to another. 14 Chapter 5. Wicket as page helloWorld.layoutTenda; import helloWorld.LoginPanel; import org.apache.wicket.event.Broadcast; import org.apache.wicket.event.IEventSink; public class SimpleLoginPage extends JugTemplate { public SimpleLoginPage(){

HTML links. Following the analogy with GUI frameworks, we can consider Wicket link as a “click” event handler: its purpose is to perform some actions (on server side!) when the user clicks on it. That paragraph we had a first taste of Wicket links and we have seen how they can be considered as a “click” event listener and how they can be used to navigate from a page to another. 14 Chapter 5. Wicket as page helloWorld.layoutTenda; import helloWorld.LoginPanel; import org.apache.wicket.event.Broadcast; import org.apache.wicket.event.IEventSink; public class SimpleLoginPage extends JugTemplate { public SimpleLoginPage(){

HTML links. Following the analogy with GUI frameworks, we can consider Wicket link as a “click” event handler: its purpose is to perform some actions (on server side!) when the user clicks on it. That paragraph we had a first taste of Wicket links and we have seen how they can be considered as a “click” event listener and how they can be used to navigate from a page to another. 13 Chapter 5. Wicket as page helloWorld.layoutTenda; import helloWorld.LoginPanel; import org.apache.wicket.event.Broadcast; import org.apache.wicket.event.IEventSink; public class SimpleLoginPage extends JugTemplate { public SimpleLoginPage(){

implements links with component org.apache.wicket.markup.html.link.Link, but it's more like onClick event listener than a link: public class HomePage extends WebPage { public HomePage(){ add(new OnLoadHeaderItem(";alert('hello!');"); ● OnEventHeaderItem: execute JavaScript code when a specifc event is triggered. OnEventHeaderItem item = new OnEventHeaderItem("elementId", items meant to work with JavaScript events. In this way we can execute our code only when a specifc event occurs. Bundle resources ● To reduce the number of requests to the server, resources can be aggregated