How to add scrollbar in gwt in flowpanel?

i am developing an mobile application and i have a problem that i can not add scrollbar in it. i want to add scroll bar in my flow panel and i also want to fix my flowpanel's size fit to screen size. if anyone kno开发者_高级运维ws the solution pls tell me thanks in adv....

Window.getClientWidth() and Window.getClientHeight() will give you the client area To add scrolling, just use ScrollPanel

ScrollPanel comes from the Base class SimplePanel and can only have one child.

To add scrollbar, use the below css class:

.add-scrollbar {
    display: block;
    overflow: auto;
}

GWT Code:

FlowPanel panel = new FlowPanel();
panel.setStyleName("add-scrollbar");