Re: Making NSBrowser more efficient
Re: Making NSBrowser more efficient
- Subject: Re: Making NSBrowser more efficient
- From: Chris Parker <email@hidden>
- Date: Fri, 12 Nov 2004 12:59:38 -0800
On Nov 12, 2004, at 12:49 PM, M. Uli Kusterer wrote:
At 18:53 Uhr +0000 12.11.2004, Jeremy Dronfield wrote:
I'm using an NSBrowser for file system browsing. The implementation
is essentially just the Simple Browser example code. The problem is
its slooooowwwwness. When selecting a directory with more than a
couple of hundred files in, display slowness becomes painful OMM -
far, far slower than the Finder's column view (which is the obvious
benchmark).
In my app the main bottleneck was NSDirectoryEnumerator. I wrote a
UKDirectoryEnumerator that's noticeably faster than
NSDirectoryEnumerator (mine uses Carbon HFS calls under the hood).
Gimme a few more hours to post a new version that can be used as a
drop-in-replacement for NSDirectoryEnumerator. The one that's
currently up at
http://www.zathras.de/programming/sourcecode.htm
returns absolute pathnames from nextObject, and doesn't return file
labels.
FWIW, I just did a bunch of work in NSDirectoryEnumerator to cut down
the cost of using it. Enumerations (especially if all you're interested
in are the filenames/paths) are going to be a lot faster. If you'd like
to see additional features added to it, please file enhancement
requests at http://bugreport.apple.com/
.chris
--
Chris Parker
Cocoa Frameworks
Apple Computer, Inc.
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