Add isToggleable command state

phosphorjs / phosphor

The PhosphorJS Library

BSD 3-Clause "New" or "Revised" License

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Open jasongrout opened 5 years ago

jasongrout commented 5 years ago

This allows interfaces (including accessible ones) to indicate to the user that the command may toggle state.

jasongrout commented 5 years ago

Looks like the test failure is from Travis, not from this PR.