Alexander Gavrilov
cd21022b78
Although e.g. in the dopesheet there is no specific concept of active action, displaying panels requires singling out one action reference. It is more efficient and clearer to implement this natively in the context rather than using selected_visible_actions[0]. - In the Action Editor the action is taken from the header. - In the Dope Sheet the first selected action is chosen, because there is no concept of an active channel or keyframe. - In the Graph Editor the action associated with the active curve is used, which should also be associated with the active vertex. This case may be different from selected_visible_actions[0]. Differential Revision: https://developer.blender.org/D15412