vaadin-framework/uitest/src/main/java/com/vaadin/tests/components/window/WindowScrollingUp.java

package com.vaadin.tests.components.window;

import com.vaadin.tests.components.AbstractTestCase;
import com.vaadin.ui.Button;
import com.vaadin.ui.LegacyWindow;
import com.vaadin.v7.ui.Table;

public class WindowScrollingUp extends AbstractTestCase {

    @Override
    protected String getDescription() {
        return "Scroll down, click 'up' and the view should scroll to the top";
    }

    @Override
    protected Integer getTicketNumber() {
        return 4206;
    }

    @Override
    public void init() {
        Table table = new Table();
        table.setPageLength(50);

        final Button up = new Button("up");
        up.addClickListener(event -> up.getUI().setScrollTop(0));

        setMainWindow(new LegacyWindow(""));
        getMainWindow().addComponent(table);
        getMainWindow().addComponent(up);

    }
}