Accessibility inter-process-communication (IPC) calls are handled by the main thread. If the main thread of the application you are requesting information from is blocked or busy then then IPC request will timeout. This timeout can be changed.
Sent from my iPad
Hello everyone,
Has anybody else encountered situations where AXUIElementCopyAttributeValue can take up to 6 seconds before returning nil?
I'm running the following piece of code on the main thread of my background app:
-(AXUIElementRef) getElementAttribute:(CFStringRef)name
{
NSLog(@"getElementAttribute: %@", name);
AXUIElementRef value;
if (AXUIElementCopyAttributeValue(_element, name, (CFTypeRef *)&value) != kAXErrorSuccess) {
NSLog(@"getElementAttribute end with nil");
return nil;
}
NSLog(@"getElementAttribute end");
return value;
}
It works reliably until a foreground application Keychain password prompt comes up, at which point I see this starting to occur in the logs of my background app:
2012-12-31 12:13:38.770 UndisclosedApp[2554:303] getElementAttribute: AXFocusedUIElement
2012-12-31 12:13:44.771 UndisclosedApp[2554:303] getElementAttribute end with nil
I'll be filing a bug report a little later with some sample code once I can isolate the smallest combination of factors to reproduce the issue, but I was curious to see if anybody else encountered a similar situation.
Thanks,
Dave Poirier
Senior Software Developer
cell: 18192097798
skype: ekscrypto
All I need is a towel, everything else can be answered by 42.
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