vaadin-framework/uitest/src/main/java/com/vaadin/tests/components/gridlayout/GridLayoutFocusOrderAfterShowChild.java

package com.vaadin.tests.components.gridlayout;

import com.vaadin.server.VaadinRequest;
import com.vaadin.tests.components.AbstractTestUIWithLog;
import com.vaadin.ui.Button;
import com.vaadin.ui.GridLayout;
import com.vaadin.ui.Label;
import com.vaadin.ui.TextField;

public class GridLayoutFocusOrderAfterShowChild extends AbstractTestUIWithLog {

    @Override
    protected void setup(VaadinRequest request) {
        GridLayout gl = new GridLayout(2, 5);
        gl.setId("grid");
        gl.setMargin(true);
        gl.setSpacing(true);

        final Label l1 = new Label("First");
        l1.setWidthUndefined();
        l1.setVisible(false);
        gl.addComponent(l1);

        final TextField t1 = new TextField();
        t1.setId("t1");
        t1.setVisible(false);
        t1.setWidthUndefined();
        gl.addComponent(t1);

        Label l2 = new Label("Second");
        l2.setWidthUndefined();
        gl.addComponent(l2);

        TextField t2 = new TextField();
        t2.setId("t2");
        gl.addComponent(t2);

        final Label l3 = new Label("Third");
        l3.setWidthUndefined();
        l3.setVisible(false);
        gl.addComponent(l3);

        final TextField t3 = new TextField();
        t3.setId("t3");
        t3.setVisible(false);
        gl.addComponent(t3);

        Label l4 = new Label("Fourth");
        l4.setWidthUndefined();
        gl.addComponent(l4);

        TextField t4 = new TextField();
        t4.setId("t4");
        gl.addComponent(t4);

        final Label l5 = new Label("Fifth");
        l5.setWidthUndefined();
        l5.setVisible(false);
        gl.addComponent(l5);

        final TextField t5 = new TextField();
        t5.setId("t5");
        t5.setVisible(false);
        gl.addComponent(t5);

        addComponent(gl);

        addComponent(new Button("Show first", event -> {
            t1.setVisible(true);
            l1.setVisible(true);
        }));

        addComponent(new Button("Show third", event -> {
            t3.setVisible(true);
            l3.setVisible(true);
        }));

        addComponent(new Button("Show fifth", event -> {
            t5.setVisible(true);
            l5.setVisible(true);
        }));
    }
}