GWT Table with collapsible rows

Anyone know an open source component for a GWT Tabl开发者_JAVA技巧e with collapsible rows?

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If you want to stick with "pure" GWT, check out the TreeTable (demo) from the GWT Incubator project - it seems exactly what you are looking for.

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I believe SmartGWT is open source.

It contains a GridList widget, which supports collapsible rows. See the showcase here. This is of course not a table, as you asked for, but it comes quite close :)