Re: NSArrayController and bindings
Re: NSArrayController and bindings
- Subject: Re: NSArrayController and bindings
- From: Peter Wollschlaeger <email@hidden>
- Date: Tue, 24 Feb 2004 22:43:50 +0100
Am 24.02.2004 um 21:29 schrieb mmalcolm crawford:
>
On Feb 24, 2004, at 11:56 AM, Rob Borsuk wrote:
>
> I would first like to use it in a Cocoa Application not a document
>
> based application. Is that okay?
>
>
Yes.
>
>
> I would like to be able to count the dictionary objects but it
>
> doesn't seem that NSArrayController (though using 'Array' in the
>
> name) has a 'count' method.
>
>
Use the array operator @count.
>
>
> I would like to be able to write the "array" out as a text file
>
> (viola - plist) but it seems that it likes to save as a encoded
>
> format.
>
>
>
In the most likely scenario, the NSController is simply managing the
>
*display* of the array, the array itself is still managed by a classic
>
custom "controller" which should be responsible for saving and
>
loading...
>
>
mmalc
I think, the easiest way is to use a document based application. Then
you only have to do a few things.
In MyDocument.nib create an outlet for File's Owner named let's say
"datenControl".
Control-drag from File's Owner to the NSArrayController and connect
this outlet.
Bind NSArrayController's contentArry to File's Owner, let the
Controller Key empty and into Model Key Path enter a name, let's say
"daten".
in MyDocument.h declare
NSMutableArray *daten;
id datenControl;
In MyDocument,m you have only to enter 2 lines (those in {}
- (NSData *)dataRepresentationOfType:(NSString *)aType
{
return [NSKeyedArchiver archivedDataWithRootObject:daten];
}
- (BOOL)loadDataRepresentation:(NSData *)data ofType:(NSString *)aType
{
daten = [NSKeyedUnarchiver unarchiveObjectWith
Data:data];
return YES;
}
If you want to allow only one window, just disable or delete the
new-menu-item
Cheers
Peter
>
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