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POWicket Dependency Injection
 

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    <p>I've got a page with a form in Wicket where the form requires a collaborator to get its job done. The collaborator is injected (for which I'm using Guice) and looks something like:</p> <pre><code>public class RegistrationPage extends WebPage { @Inject public RegistrationPage(RegistrationService service) { this.service = service; add(new RegistrationForm()); } private class RegistrationForm extends Form { public RegistrationForm() { // setup } protected void onSubmit() { service.doSomething(); } } } </code></pre> <p>I don't like the idea that the RegistrationService is injected into the RegistrationPage when it's just the RegistrationForm that needs it. I could change the RegistrationForm to receive the RegistrationService:</p> <pre><code>public RegistrationForm(RegistrationService service) { this.service = service; } </code></pre> <p>and remove the field from the RegistrationPage, but the RegistrationPage is still being used to do the pass-through.</p> <p>I guess what I'm asking is what the best-practise is for doing this? Is this ok to do, or would it perhaps be better to inject the RegistrationForm itself into the Page:</p> <pre><code> public class RegistrationPage extends WebPage { @Inject public RegistrationPage(RegistrationForm form) { add(form); } } --- private class RegistrationForm extends Form { private RegistrationService service; @Inject public RegistrationForm(RegistrationService service) { this.service = service; } protected void onSubmit() { service.doSomething(); } } </code></pre> <p>I'd prefer this as I'd like to have the RegistrationForm in a separate class/file. I'm quite new to Wicket so unsure of what the norm is - can someone show me the guiding light? :)</p>
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