File navigator GUI, collapsable?

Hi. Just downloaded JUCE and looking forward to using it. Looked in JUCE user manual for a particular GUI widget, but manual is entirely text. Is there a place I can see what the GUI widgets look like? We need a folder/file navigator that is permanently displayed, with collapsable “+” icons (like left side of Windows Explorer). FileBrowserComponent may be it … but what does it look like? FileChooser sounds like a popup dialog, which is not what we want. Thanks!

I think there might be one of those in the jucedemo on the audio page, to select a file to play…