This week's book giveaway is in the OCPJP forum. We're giving away four copies of OCA/OCP Java SE 7 Programmer I & II Study Guide and have Kathy Sierra & Bert Bates on-line! See this thread for details.
Following are a number of key use cases used to drive the Cell API design, along with code examples showing how those use cases are satisfied by this API. This is by no means to be considered the definitive list of capabilities or features supported, but rather, to provide some guidance as to how to use the Cell API. The examples below are focused on the ListView, but the same philosophy applies to TreeCells or other kinds of cells.
So, you should use the ".tree-cell" selector, not the ".list-cell" selector to style cells of a TreeView.