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

package com.vaadin.tests.components.window;

import com.vaadin.tests.components.TestBase;
import com.vaadin.ui.Button;
import com.vaadin.ui.TabSheet;
import com.vaadin.ui.VerticalLayout;
import com.vaadin.ui.Window;
import com.vaadin.v7.ui.Table;

public class SubWindowWithUndefinedHeight extends TestBase {

    @Override
    protected String getDescription() {
        return "Setting subwindow height to undefined after initial rendering does not update visual height";
    }

    @Override
    protected Integer getTicketNumber() {
        return 7916;
    }

    @Override
    protected void setup() {
        final VerticalLayout layout = new VerticalLayout();
        layout.setMargin(true);
        final Window subwindow = new Window("subwindow", layout);
        subwindow.center();
        subwindow.setSizeUndefined();
        layout.setSizeUndefined();

        final Button tabButton = new Button("A button");
        tabButton.setCaption("Tab 1");
        tabButton.setWidth("200px");

        final Table table = new Table();
        table.setCaption("tab 2");
        table.setWidth("100%");
        table.setHeight("100%");

        final TabSheet tabsheet = new TabSheet();
        tabsheet.addComponent(tabButton);
        tabsheet.addComponent(table);
        tabsheet.addSelectedTabChangeListener(
                new TabSheet.SelectedTabChangeListener() {
                    @Override
                    public void selectedTabChange(
                            TabSheet.SelectedTabChangeEvent event) {
                        if (tabsheet.getSelectedTab() == tabButton) {
                            tabsheet.setSizeUndefined();
                            layout.setSizeUndefined();
                            subwindow.setSizeUndefined();
                        } else if (tabsheet.getSelectedTab() == table) {
                            subwindow.setWidth("500px");
                            subwindow.setHeight("500px");
                            layout.setSizeFull();
                            tabsheet.setSizeFull();
                        }
                    }
                });
        layout.addComponent(tabsheet);

        Button button = new Button("click me",
                event -> getMainWindow().addWindow(subwindow));
        getMainWindow().addComponent(button);
    }
}