Ajaxformcomponentupdatingbehavior 1 5


24-Sep-2019 20:16

But if you have a custom component create by yourself from more components or even one like Date Field, Date Text Field , you will have to add a behavior to every sub-component to make your form update through ajax.For example, a Date Time Field must respond if we change something inside its text field or if we change hours or minutes through its internal text fields, or AM/PM through its internal drop down choice.As you can see everything is Java, not a single line of Javascript was necessary.In order to change what the label displays we simply modified a POJO.The key is that your component must be a Form Component, otherwise the event won't be triggered.Simple components like Check Box, Text Field, Drop Down Choice are all Form Components.In this article, we will introduce the basics by building the You may want to check out the latest version of Wicket in the Maven Central repository, which at the time of your reading may not coincide with the one used here.Now we are ready to build our first Wicket application.

Home Page; /** * @author Niranjan Velagapudi * */ public class Test Home Page If Deployment is successful, you should be able to view the Home Page as below; Access url – Web App Change the Language drop down to French and you will notice label changed in French.To access internal components from a wicket component we can use a get method with the markup-id as parameter if no methods are offered by that class.Inside Date Time Field we can override a new Date Text Field method to add our behavior.If you have a form component in wicket with some components and you want to change using ajax some things in that form before submit (when you click or edit on one of the components), then you have to use Ajax Form Component Updating Behavior.

This is a behavior that updates the hosting Form Component via ajax when an event it is attached to is triggered.Wicket is a Java server-side web component-oriented framework that aims at simplifying building web interfaces by introducing patterns known from desktop UI development.



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