title: How to add components to Window header in Vaadin 7
body: <p>I want to add button to the Window header near the close button. In vaadin 6 i use Toolbar Window add-on <a href="https://vaadin.com/directory#addon/toolbarwindow" rel="nofollow">https://vaadin.com/directory#addon/toolbarwindow</a>, but it is not supported in vaadin 7 now.</p>