Arrow left to collapse, arrow right to expand
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krassowski commented
Is your feature request related to a problem? Please describe.
We can already expand (unfold) the navigation tree by pressing enter, but it is not obvious how to close (collapse, fold) it.
Describe the solution you'd like
I would like the tree to expand/collapse when pressing arrow right/left as in jupyterlab/jupyterlab#11615
Describe alternatives you've considered
Backspace could work for collapsing too, but arrows seem more natural in the tree context.
Additional context
- Python package version: 0.1.6
- Extension version: 0.1.6
- Operating System and its version: Ubuntu