[Openmcl-devel] The File Menu
mevins at me.com
Sun Jan 24 08:47:03 UTC 2010
On Jan 23, 2010, at 11:29 PM, Ron Garret wrote:
> Is it possible to change the behavior of items in the File menu? Is
> it straightforward? I want to intercept the SAVE and REVERT items
> and hook them up to a revision control system. I tried to reverse
> engineer the menu but ran into a roadblock when the action selector
> was just a foreign pointer with no hint as to what it was pointing
> at. Is the File menu managed by Lisp at all, or is all of its
> functionality provided by Cocoa?
The standard menu items send standard events that get handled by
standard methods. Save calls the document's saveDocument: method, and
revert calls its revertDocumentToSaved: method (assuming you're using
document objects; actually, if I recall correctly, they send the
messages to the first responder, which, in the case of a document-
based app will be an instance of NSDocument or a subclass).
The canonical and therefore easy way to modify their behavior is to
create a custom NSDocument subclass and write methods on those
messages. You can find details about them at:
There might also be a delegate protocol for handling them, in which
case a possibly even easier way would be to provide methods on the
application delegate, but I don't remember that for sure.
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