How to timeout of repeat while statement??

Scripting Forums AppleScript | Mac OS X
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#1

Hi,

I’m still in the process of learning Applescript, so apologies if this is an obvious question. I tried searching existing topics for an answer, but didn’t come up with one.

I’m trying to wait for an application’s dialog to appear before I perform certain actions to it, such as pressing a button or something. But, I don’t want to use a simple “delay 20” statement. I tried several variations of the following. It works great if the dialog does eventually appear. But if it doesn’t, the script just runs forever in an infinite loop. I’d like to be able to exit out of the loop after some number of seconds, but I can’t figure out how. Help!

with timeout of 20 seconds
	try
	repeat until exists (window "blah" of application "thingy")
		delay 1
	end repeat
	on error
		return "this sucks"
	end try
end timeout

tell window "blah" of application "thingy"
	click button "OK"
end tell
#2

Not exactly what you’re looking for but this should work…

set windowExists to false
tell application "System Events"
	repeat 20 times
		if exists (window "Scripting Additions" of process "Script Debugger 4") then
			set windowExists to true
			exit repeat
		end if
		delay 1
	end repeat
end tell