gistfile1.txt

package com.example;

import com.vaadin.icons.VaadinIcons;
import com.vaadin.ui.Button;
import com.vaadin.ui.Grid;
import com.vaadin.ui.VerticalLayout;
import com.vaadin.ui.renderers.ComponentRenderer;
import com.vaadin.ui.themes.ValoTheme;

/**
 * @author Alejandro Duarte.
 */
public class ComponentsInGrid extends VerticalLayout {

    private Service service = new Service();

    private Grid<Person> grid = new Grid<>();

    public ComponentsInGrid() {
        grid.setItems(service.findAll());
        grid.addColumn(Person::getFirstName).setCaption("First name").setExpandRatio(1);
        grid.addColumn(Person::getLastName).setCaption("Last name").setExpandRatio(1);
        grid.addComponentColumn(this::buildDeleteButton);

        addComponent(grid);
    }

    private Button buildDeleteButton(Person p) {
        Button button = new Button(VaadinIcons.CLOSE);
        button.addStyleName(ValoTheme.BUTTON_SMALL);
        button.addClickListener(e -> deletePerson(p));
        return button;
    }

    private void deletePerson(Person p) {
        service.delete(p);
        grid.setItems(service.findAll());
    }
}