package codetroopers.wicket.web.parsley;
import codetroopers.wicket.web.parsley.javascript.ParsleyJsReference;
import org.apache.wicket.AttributeModifier;
import org.apache.wicket.Component;
import org.apache.wicket.WicketRuntimeException;
import org.apache.wicket.bean.validation.*;
import org.apache.wicket.behavior.Behavior;
import org.apache.wicket.markup.head.IHeaderResponse;
import org.apache.wicket.markup.head.JavaScriptHeaderItem;
import org.apache.wicket.markup.html.form.Form;
import org.apache.wicket.markup.html.form.FormComponent;
import org.apache.wicket.util.visit.IVisit;
import org.apache.wicket.util.visit.IVisitor;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Behavior to add to a Form. This behavior will automatically add parsley validation rules to its children
* along with their Bean validation validator.
*
* You must call Parsley.register(application) for the parsley validators to be properly created
*
* @author cgatay
*/
public class ParsleyFormBehavior extends Behavior {
private static final Logger LOGGER = LoggerFactory.getLogger(ParsleyFormBehavior.class);
/**
* Contributes parsley.js when this validator is attached to a form
*
* @param component The form component that will be validated
* @param response the response object where header contributions should be written
*/
@Override
public void renderHead(Component component, IHeaderResponse response) {
super.renderHead(component, response);
response.render(JavaScriptHeaderItem.forReference(new ParsleyJsReference(component.getLocale())));
}
@Override
public void bind(Component component) {
if (!(component instanceof Form)) {
throw new WicketRuntimeException("This behavior can only be bound to Form");
}
final Boolean registeredMetaData = component.getApplication().getMetaData(Parsley.PARSLEY_REGISTERED);
if (registeredMetaData == null) {
throw new WicketRuntimeException("Bean validation is not properly registered. " +
"Please call Parsley.register(Application.get())");
}
component.add(AttributeModifier.append("data-validate", "parsley"));
}
@Override
@SuppressWarnings("unchecked")
public void onConfigure(Component component) {
final BeanValidationContext beanValidationContext = BeanValidationConfiguration.get();
((Form) component).visitFormComponents(new IVisitor<FormComponent<?>, Void>() {
@Override
public void component(FormComponent<?> formComponent, IVisit<Void> visit) {
final Property property = beanValidationContext.resolveProperty(formComponent);
if (property != null) {
formComponent.add(new PropertyValidator());
} else {
LOGGER.debug("Unable to attach parsley attributes to component {}, " +
"property is not accessible (consider using a model implementing {}",
formComponent, IPropertyResolver.class.getSimpleName());
}
}
});
}
}