I've been trying to develop tools for the Timeline and would like to determine if a key is selected in an F-Curve timeline. It appears that this is very difficult because there is no method for determining the active Timeline. Unless this exists and I'm unaware, I'd like to request this for the SDK please as I believe it would be very helpful for Animation Timeline plugins.
This is an issue originally brought up in this post.
How to Get the Selected Keyframes in Active Timeline/FCurve Manager