Set focus to specific window of an application using applescript

Question

How can I set focus to a specific window of a given application using applescript?

I have several iTerm2 windows running on different displays. I want to set focus to a

Answer 1

You almost have it. You can filter out the "-1" window IDs as by only looking at visible windows:

tell application "iTerm 2"
  set wins to id of every window whose visible is true
end tell

I figured this out by looking at the results of:

tell application "iTerm 2" to properties of every window

I noticed that the "-1" windows have the property visible:false

Then you can tell the window ID directly to the iTerm application instead of system events:

tell application "iTerm 2"
  activate window 13195
end tell