Allow openPanel to choose folders in Cocoa document-based application?

[Eric Raas]

I am trying to figure out the best way to force the open panel of a
Cocoa document-based application to allow selection of folders. In some
situations the document model I use can be constructed from the contents
of a Folder, and I would like to allow users to select a folder.
Validation of the contents (to see if they in fact form a document)
would be done in an NSDocument subclass method.

I realize I could subclass NSDocumentController, and implement my own
version of openDocument, but am wondering if this is the best way (seems
a lot to subclass a major class just to override one GUI default).

Thanks for any suggestions,

ER

[Eric Pepke]

Eric Raas <foo@bar.net> wrote in message news:<20030918141918883-0400@nntp.mgh.harvard.edu>...

> I am trying to figure out the best way to force the open panel of a
> Cocoa document-based application to allow selection of folders. In some
> situations the document model I use can be constructed from the contents
> of a Folder, and I would like to allow users to select a folder.
> Validation of the contents (to see if they in fact form a document)
> would be done in an NSDocument subclass method.

[openPanel setCanChooseDirectories:YES];

assuming that openPanel is your openPanel.

[Eric Raas]

In <ef37f531.0309201842.1de8450@posting.google.com> Eric Pepke wrote:

> Eric Raas <foo@bar.net> wrote in message news:<20030918141918883-0400@
> nntp.mgh.harvard.edu>...

>> I am trying to figure out the best way to force the open panel of a
>> Cocoa document-based application to allow selection of folders. In
>> some situations the document model I use can be constructed from the
>> contents of a Folder, and I would like to allow users to select a
>> folder. Validation of the contents (to see if they in fact form a
>> document) would be done in an NSDocument subclass method.

>
> [openPanel setCanChooseDirectories:YES];
>
> assuming that openPanel is your openPanel.
>

Thanks - I have used setCanChooseDirectories:YES in the past when I have
launched an openPanel outside of the Cocoa document framework. What I
am wondering is where this operation should go in a Document-based app (
in an NSDocument method? in an override of NSDocumentController?)

ER

[Eric Pepke]

Eric Raas <foo@bar.net> wrote in message news:<20030921104429426-0400@news.verizon.net>...

> Thanks - I have used setCanChooseDirectories:YES in the past when I have
> launched an openPanel outside of the Cocoa document framework. What I
> am wondering is where this operation should go in a Document-based app (
> in an NSDocument method? in an override of NSDocumentController?)

TIMTOWTDI, but I put it in a custom subclass NSDocumentController,
which I just put in the main nib file. The system seems magically
to know to use that one.

[Tom Harrington]

In article <ef37f531.0309221906.7f987624@posting.google.com >,
[email]epepke@acm.org[/email] (Eric Pepke) wrote:

> Eric Raas <foo@bar.net> wrote in message
> news:<20030921104429426-0400@news.verizon.net>...

> > Thanks - I have used setCanChooseDirectories:YES in the past when I have
> > launched an openPanel outside of the Cocoa document framework. What I
> > am wondering is where this operation should go in a Document-based app (
> > in an NSDocument method? in an override of NSDocumentController?)

>
> TIMTOWTDI, but I put it in a custom subclass NSDocumentController,
> which I just put in the main nib file. The system seems magically
> to know to use that one.

What does "TIMTOWTDI" mean? I've seen a lot of this kind of
abbreviation, but this one's new on me.

--
Tom "Tom" Harrington
Macaroni, Automated System Maintenance for Mac OS X.
Version 1.4: Best cleanup yet, gets files other tools miss.
See [url]http://www.atomicbird.com/[/url]

[matt neuburg]

Tom Harrington <tph@pcisys.no.spam.dammit.net> wrote:

> What does "TIMTOWTDI" mean? I've seen a lot of this kind of
> abbreviation, but this one's new on me

You could easily learn what this abbreviation means just by typing it
into Google. Not that you'd have to use Google particularly; there is
more than one way to do it, I'm certain. Heck, just reading this note
carefully might tell you the answer. One way or another, though, wasting
bandwidth here is just utterly needless. m.

--
matt neuburg, phd = [email]matt@tidbits.com[/email], [url]http://www.tidbits.com/matt/[/url]
Read TidBITS! It's free and smart. [url]http://www.tidbits.com[/url]