Implement tree type-navigation support

[joaomoreno]

A tree should be navigable by typing letters which match the row labels, similarly to file explorers.

cc @weinand @isidorn @sandy081 @jrieken

[jrieken]

check out this https://github.com/Microsoft/vscode/blob/8ff7181ee758ebf391954ffe802bda59e372f3c3/src/vs/platform/list/browser/listService.ts#L710 and the beefy part which is this: https://github.com/Microsoft/vscode/blob/8ff7181ee758ebf391954ffe802bda59e372f3c3/src/vs/platform/list/browser/listService.ts#L667. Trick is to redirect the key event, while its down, to an input box

[joaomoreno]

Thanks!

Edit: links are broken tho :P

[jrieken]

links are broken tho :P

Needed to push

[joaomoreno]

Here's a cool demo:

This feature is now available for all lists and new trees. You still need to provide a TypeLabelProvider when creating your list/tree, just like what @isidorn has done for debug in 64addbd.

[weinand]

@joaomoreno Cool feature, but the name TypeLabelProvider is a bit misleading.
And KeyboardNavigationLabelProvider is a bit long...

[joaomoreno]

Went with KeyboardNavigationLabelProvider, not really worried about the length. 👍