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Apache Wicket Cookbook by Igor Vaynberg

By Igor Vaynberg

This can be a hands-on sensible consultant to a wide number of themes and use instances. This publication attempts to exploit real-world examples while attainable, yet isn't afraid to return up with a contrived pretext if it makes explaining the matter easier. not like loads of different books, this one doesn't attempt to retain a continual subject from bankruptcy to bankruptcy, equivalent to demonstrating options at the similar fictional program; doing so will be nearly very unlikely given the wide range of recipes provided the following. in its place, this booklet concentrates on targeted difficulties clients are inclined to come across and exhibits transparent suggestions in a step by step demeanour. This ebook attempts to coach via instance and isn't afraid to teach loads of code simply because, in any case, it's for coders. This publication is for present clients of the Apache Wicket framework; it's not an creation to Wicket that would bore you with hundreds concept. you're anticipated to have outfitted or maintained an easy Wicket software long ago and to be seeking to examine new and higher methods of utilizing Wicket. while you are able to take your Wicket talents to the subsequent point this publication is for you.

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Example text

1. java public class HomePage extends WebPage { public HomePage(final PageParameters parameters) { add(new FeedbackPanel("feedback")); TextField< ? of("Password")); FormComponent< ? of("")); Form< ? add(password2); } } How to do it... 1. lengthBetween(5, 20)); add(new PatternValidator("[a-z]+")); } } 2. java TextField< ? add(new UsernameValidator()); How it works... wicket. validate(validatable); } } } The method loops over all validators that have been added and delegates validation to each one sequentially by invoking their IValidator#validate(IValidatable) method.

GetHour(), time. isAm()) ? "am" 26 Chapter 1 : "pm")); } } 3. class; } @Override protected IConverterLocator newConverterLocator() { ConverterLocator locator = (ConverterLocator)super. class, new TimeConverter()); return locator; } } 6. java public class HomePage extends WebPage { private Time time; public HomePage(final PageParameters parameters) { TextField

Lets begin by implementing a model that will feed the country selectbox a list of countries. java private static class CountriesModel extends LoadableDetachableModel> { protected List> { protected List

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