Hi -
I am trying to factor some frameworks so that code used in a document-
based Cocoa app can be shared with command-line tools that might run
on a headless node (no window server).
I've seen some discussion in the past on questions such as whether
NSImage and related classes can be used headless. It seems that this
works, but it's necessary to initialize and NSApplication instance for
the classes to work correctly.
I realize that many AppKit functions will not be meaningful in a
headless context. However I am wondering if, for example, it would be
possible (and safe) to use an NSDocument subclass instance in the
following way in a headless app:
MyDocument *doc = [[[MyDocument] alloc] init];
[doc readFromURL:url ofType:type error:error];
The idea would simply be to use the instance as a container for some
data, and use the file read and write methods I've already implemented
for the doc-based interactive application. This seems to work in some
simple test apps I've written, but I'm wondering if there is anything
risky about this that could become a problem in the future.
Also, when is it necessary to initialize an NSApplication instance?
Is this just an NSImage thing? or is it a more general AppKit
requirement.
Thanks for any suggestions,
Rick
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