Wicket- RequiredFieldValidator for AjaxEditableLabel

Question

At first I want to say, although RequiredFieldValidator is used in .NET but I use this term for wicket as I want to mean a Label (color: red and text: *) which will be be di

Answer 1

Instead of having a label hanging around, you could do it with a behaviour

public class RequiredStarBevaviour extends AbstractBehavior {

@Override
public void beforeRender(final Component component) {
    super.beforeRender(component);
    if (component instanceof FormComponent) {
        if (!((FormComponent) component).checkRequired()) {
            component.getResponse()
                    .write("*");
        }
    }
}

}

This will run each time the component is rendered, it will check if its a form component and if the required check is not met it will render the star.

EDIT response to question:

final AjaxEditableLabel label = new AjaxEditableLabel("value",
                new Model(value)) {

            @Override
            protected FormComponent newEditor(final MarkupContainer parent,
                    final String componentId, final IModel model) {
                final FormComponent newEditor = super.newEditor(parent,
                        componentId, model);
                newEditor.add(new RequiredStarBevaviour());
                return newEditor;
            }

            @Override
            public void onSubmit(final AjaxRequestTarget target) {
                super.onSubmit(target);
                // here I also try to get the editor
                // and add a SimpleAttributeModifier
                // with a javaScript for onBlur
                // event, but that script is not
                // working as I am not able to
                // append that script to the
                // editor's existing ajax
                final String input = (String) getModelObject();
                if (input != null) {
                    taskTypeSettingsFormModel.getTaskTypeList().set(index,
                            input);
                }
            }
        };