dismiss-os12-and-earlier.scpt

tell application "System Events"
  set frontmostApplicationName to name of 1st process whose frontmost is true
end tell


activate application "NotificationCenter"
tell application "System Events"
	tell process "Notification Center"
		repeat
			
			try
				set theWindow to group 1 of UI element 1 of scroll area 1 of window "Notification Center"
			on error
				exit repeat
			end try
			
			try
				set theActions to actions of theWindow
				
				# Try to close the whole group first. If that fails, close individual windows.
				repeat with theAction in theActions
					if description of theAction is "Clear All" then
						set closed to true
						tell theWindow
							perform theAction
						end tell
						exit repeat
					end if
				end repeat
				
				repeat with theAction in theActions
					if description of theAction is "Close" then
						set closed to true
						tell theWindow
							perform theAction
						end tell
						exit repeat
					end if
				end repeat
				
			end try
		end repeat
	end tell
end tell



tell application frontmostApplicationName
  activate
end tell