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Vaadin Forum3. Vaadin 6, 7, 8Framework UI

Tree inside a Panel - no scrollbar

Stéphane Nicoll
1 decade ago Apr 12, 2012 2:16pm

Hi,

I am building a custom component that allows to display some data both hierarchically and flat. The component has an option group to select whether the content should be displayed as a tree or as a flat list (ListSelect)

This component is wrapped in a panel, I have added a listener on the option group to replace the component inside the panel.

When the data is viewed as a list I have a vertical scrollbar. When it is displayed as a tree, I don't.

The Analyze Layout shows no error.

What am I missing? I am on 6.7.6

Thanks

+1
Stéphane Nicoll
1 decade ago Apr 16, 2012 9:50am

anyone?

Stéphane Nicoll
1 decade ago Apr 16, 2012 12:28pm

Stéphane Nicoll: anyone?

Well if I had looked at the documentation more carefully, I would have found this myself. I had the underlying layout with setSizeFull. Fixed, sorry for the noise.

Martin Letendre
1 decade ago Apr 16, 2012 12:35pm

Yes there is a problem with the tree when you expand it you must repaint the panel each time you expand/minimize the panel. You do this with a ExpandListener. Check the code bellow

Here is an example (I have a HorizontalSplitPanel instead of a Panel).

tree.addListener(new ExpandListener() {

			@Override
			public void nodeExpand(ExpandEvent event) {
				panel.requestRepaint();

			}

		}