Function for getting the index of the Selected Visible Track

As far as I know there’s no function integrated in the code to easily get the position of a Selected Visible Track inside of the Visible Tracks list. You might need this position when you’ve got closed Group Tracks in your Tracks list.

The Visible Tracks list is also a vector custom built by Ableton that doesn’t have its own `.index()` method.

To get the position you need to compare the selected Track Object with all Track Objects inside the Visible Tracks list until you find a match. Here’s a function that does this:

def get_selected_visible_track_num():
    track_num = self.get_selected_track_num()
    track = self.song().tracks[track_num]
    for i in range(len(self.song().visible_tracks)):
        visible_track = self.song().visible_tracks[i]
        if visible_track == track:
            return i