Request: actions detect page view states

Question

We use buttons and links extensively to create large, complicated PDF publications that include layers and rich media.  Our target audience is casual viewers who are interested in the content, not in how Reader works.  So, we create our own interactivity allowing the viewers to change how the page is viewed - in and out of Full Screen, for example, or with bookmarks or pages panels on or off.  The biggest problem we have is that these button and link actions are toggles - you cannot specific the actual state you'd like to achieve (unlike page actions.)
We would like to be able to set a button or link action such that we specify that Full Screen is ON, or OFF.  Right now, if the user has independently set their view to Full Screen, and then clicks our button, it actually does the reverse and turns the Full Screen OFF, due to the toggle action.
Alternatively (and actually even better) if we could have a conditional action (without resorting to Javascript!) that would allow the Full Screen button to be set IF the view is not already in Full Screen, or navigation panels are not already ON, that would work well.
Or, even having two actions - turn Full Screen ON, and turn Full Screen OFF, would be better than the blind toggle.
We've struggled with this for years, and keep hoping a new version will add this funcationality!
Thea LaCross
LensWork Publishing

Answer 1

With can be easily achieved with JavaScript, so why not use it?