package mypackage;

import org.apache.wicket.markup.html.WebPage;
import org.apache.wicket.markup.html.basic.Label;
import org.apache.wicket.markup.html.form.Form;
import org.apache.wicket.markup.html.form.TextField;
import org.apache.wicket.model.Model;
import org.apache.wicket.request.mapper.parameter.PageParameters;

public class Counter extends WebPage {
	private static final long serialVersionUID = 1L;
	private int counter = 0;
	public Counter(final PageParameters parameters) {
		super(parameters);

		final TextField<Integer> inputText = new TextField<Integer>("inputText", new Model<Integer>(0), Integer.class);
		final Label total = new Label("total", "0");
		Form<Void> submitForm = new Form<Void>("submitForm") {
			private static final long serialVersionUID = 1L;

			@Override
			protected void onSubmit() {
				int number = inputText.getModelObject();
				counter += number;
				total.setDefaultModelObject(counter);
			}
		};
		submitForm.add(inputText);
		add(submitForm);
		add(total);
	}
}