Re: NSArraycontroller, Bindings nad NSTableview
Re: NSArraycontroller, Bindings nad NSTableview
- Subject: Re: NSArraycontroller, Bindings nad NSTableview
- From: Louis Demers <email@hidden>
- Date: Fri, 18 Jul 2008 00:20:46 -0400
Well, as a reply to my own message . I seem to have gotten it to work
very nicely !
I recreated a fresh project and let my NSArrayController instance
create and manage the storage for me. In addition to possible
misconfiguration, It seems I was caught by the fact that
NSArrayController does not add the object immediately upon creation,
since I was checking the count immediately after sending the "add"
message. From the doc
-------------
add: Creates and adds a new object to the receiver’s content and
arranged objects.
...
Special Considerations
Beginning with Mac OS X v10.4 the result of this method is deferred
until the next iteration of the runloop so that the error presentation
mechanism can provide feedback as a sheet.
-------------
Cheers.
On 17-Jul-08, at 11:52 , Louis Demers wrote:
Hi,
I've programmed for a while in Cocoa, with bindings... But for the
first time I need a NSTableView and I would like to use
NSArrayController with bindings to do as much work as possible and
with the minimum amount of code. But I've had nothing but failure,
even after inspecting many examples and tutorials on google.
Initially I believed that NSArrayController would store the array
itself but I now resorted to having my own NSMutableArray (with
getter and setters) in my model.
A button bound to the "add" or the "insert" method of the
NSArrayController just does nothing. To debug things, I created a
subclass of NSArrayController to intercept the "add" method and
confirm that it does get called but it does not create and insert
any object. The NSControllerArray instance is configured to generate
object of class toto (with editable chedked and preapres content
uncheked).
and it's binding is pointing to where my NSMutableArray is located
Controller Content
bind to myController instance
controller Key is empty
Model Key Path is set to the accessor of my array
In my subclass of the NSArrayController array, if I create a toto
object and use addObject, it works ! Even the NSTableView gets
updated !
- (void)add:(id)sender;
{
[super add:sender]; // Does not work
NSLog(@"count %d" , [[super content] count]);
[super addObject:[[toto alloc] init]]; // Works
NSLog(@"count %d" , [[super content] count]);
}
Any clues why the "add" method does not work ?
If anybody as such a trivial sample/tutorial, I'd be very grateful,
(after a third nights of banging my head against this problem)
Thanks.
PS:
Xcode 3.1
Component versions
Xcode IDE: 1099.0
Xcode Core: 1100.0
ToolSupport: 1086.0
IB Version 3.1 (670)
Louis Demers eng.
www.obzerv.com
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Louis Demers eng.
www.obzerv.com
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