Expanding VerticalLayout Height

Eric Dobbs

I have a problem, I have a verticallayout containing two components(Panel, SplitPanel). I am trying to have the containing layout expand to use the full height of the screen. Below is the code and screenshot. Thanks for any help.

public void init() {
Window mainWindow = new Window("Mymart Application");

VerticalLayout layout = new VerticalLayout();
layout.setSizeFull();
layout.setSpacing(true);
setTheme("mytheme");

Panel headerPanel = new Panel();
headerPanel.addStyleName("bkgrnd");
Label headerLabel = new Label("My Store");
headerPanel.addComponent(headerLabel);

BaseView baseView = new BaseView();
baseView.setHeight("100%");

layout.addComponent(headerPanel);
layout.addComponent(baseView);
layout.setExpandRatio(baseView, 1.0f);

mainWindow.addComponent(layout);
setMainWindow(mainWindow);
}

Screenshot.png (10.9 kB)

Jens Jansson

Panels and Windows (Windows extend Panels) have automatically a layout in it when you initialize it. This is something that many are not aware of and this may cause problems.

So when you want a component tree like this:

Window (mainWindow)
`- VerticalLayout (layout)

you actually get

Window (mainWindow)
 `- VerticalLayout (with no direct field in your program)
     `- VerticalLayout (layout)

with the code that you have. Use the getContent / setContent on Panel/Window to access and modify this middle layout.

I suggest you change your second last line, mainWindow.addComponent(layout); to mainWindow.setContnet(layout); to get rid of the extra layout. That might solve some of your problems.

If your problems still persists I think the problem is in the BaseView class.

Last updated on Mar, 19th 2010

Eric Dobbs

Thanks, I will try that

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Expanding VerticalLayout Height

Important Notice - Forums is archived

Vaadin lets you build secure, UX-first PWAs entirely in Java.Free ebook & tutorial.

Expanding VerticalLayout Height

Vaadin lets you build secure, UX-first PWAs entirely in Java.
Free ebook & tutorial.