Todo

• Handle errors (i.e when the list of items is truncated)
• What to do with the .. case? https://sourcegraph.slack.com/archives/C04931KQVRC/p1673961506582769
  • Implement the old behavior behind a flag? https://github.com/sourcegraph/sourcegraph/pull/46893
• Handle submodules (and other features that I forgot?)
• Create a Wildcard Tree
• Migrate symbols to the new tree (need to look into the search issue Chose whether we want focus or scrollIntoView when changing expandedIds dgreene1/react-accessible-treeview#73)
• expand single-child-folders

The file tree can be navigated with the arrow keys. However, this doesn't actually focus the DOM elements, it just gives them different colors and changes application state.

This means that when using a screen reader, the current element stays on the old item and the screen reader will not announce the selected items. Hitting tab will select a different element than expected.

Selecting an item with enter makes the search box steal focus:

Additional comment:
@umpox We prefetch file data onMouseOver on the list, but we only support the same functionality for keyboard focusing in componentDidUpdate. We should be able to use onFocus here.

cc @attfarhan