When headphones, external speakers, or neither of the above
(internal speaker) are connected, the Sound pane of System
Preferences indicates the change. To be able to detect the
configuration from an AppleScript, however, the only means I've
been able to find is this one:
-----
activate application "System Preferences"
tell application "System Events" to tell process "System Preferences"
click button "Sound" of scroll area 1 of window "System Preferences"
delay 1
set S to value of text field 1 of row 1 of table 1 of scroll area 1
of tab group 1 of window "Sound"
end tell
-----
where the value of 'S' will be 'Internal Speakers', 'Line Output',
or 'Headphones', depending on the hardware setup.
That's a rather brute force approach (which only works, BTW, if
System Preferences is not running when it's invoked).
[snip]
You also need to make sure the relevant tab is selected, Adam. When I
ran the above script, for example, I got the result "Basso" - because
the last sound tab selected here was "Sound Effects".
1. Is there a cleaner way to open the sound pane directly?
In a word, yes. This should work regardless of System Preferences'
current status - and with no explicit delay required:
----------------
tell application "System Preferences"
reveal anchor "output" of pane id ¬
"com.apple.preference.sound"
end tell
tell application "System Events"
set S to value of text field 1 of row 1 of table 1 of ¬
scroll area 1 of tab group 1 of window "Sound" of ¬
application process "System Preferences"
end tell
