Allow for scanning only a specific folder in DiskUsage

[leavengood]

Right now if DiskUsage is opened with the Tracker add-on in a specific folder, the whole volume is scanned. While this allows for "drilling out" to see usage outside that folder, the more likely case is the user only cares about that folder at the moment, and the time spent scanning the whole volume is wasted.

So I would suggest that if DiskUsage is invoked on a specific folder only that folder is scanned, and that drilling out of that folder is either disabled or a message pops up to ask the user if they want to scan the whole volume.

[Disreali]

That does not make sense. As I understand, the purpose of the DiskUsage utility is to show disk usage of files and directories. That can not be done without scanning the entire disk first.

If someone wants to get the size of a specific file or directory, use "Get Info", as DiskUsage would be the wrong utility to use in that case. DiskUsage needs to scan the entire disk for it to fulfill its function.

[stpere]

Not quite. You could scan every subfolders from a starting point and still get a valid Pie View. You just couldn't leave it (go to the starting point's parent for example) without having to scan further.