Your instantiating your NSBrowser from a nib file. Try over riding
- (id)initWithCoder:(NSCoder *)coder
-raleigh
On Jun 26, 2011, at 4:18 AM, Ari Black wrote:
> On 11-06-26 7:04 AM, Fritz Anderson wrote:
>>
>> On 25 Jun 2011, at 7:05 PM, Ari Black wrote:
>>
>>> @implementation SpecialMatrix
>>>
>>> - (id)initWithFrame:(NSRect)frameRect mode:(NSMatrixMode)aMode
>>> prototype:(NSCell *)aCell numberOfRows:(NSInteger)numRows
>>> numberOfColumns:(NSInteger)numColumns {
>>> int x;
>>> x = 0; // I put a breakpoint here
>>>
>>> return self;
>>> }
>>>
>>> @end
>>
>> You don't get to this point, so it's not the problem you have now, but I
>> assume your real code invokes [super initWithFrame:...]?
>
> I hadn't put a call to [super ...] yet as I wanted to verify that my
> initWithFrame: was being called. Once I get this problem worked out, I will
> call [super ...].
>
>>
>>> This is in the implementation of the class that controls the window the
>>> browser is in:
>>>
>>> - (void)awakeFromNib {
>>> [browser setMatrixClass:[SpecialMatrix class]];
>>>
>>> [browser loadColumnZero];
>>>
>>> NSMatrix *matrix = [storyLine matrixInColumn:0]; //<- return nil
>>> matrix = [storyLine matrixInColumn:1]; //<- returns nil
>>> }
>>
>> First step: Break in -awakeFromNib and verify that browser is not nil.
>
> I've tested this and it's not nil. browser is an outlet I created and
> connected with IB. The NSBrowser works for adding items to all of the columns
> and I check to make sure that SpecialMatrix is set to be the matrix class in
> browser after the call to setMatrixClass:
>
>>
>> Second step: Maybe an NSBrowser doesn't instantiate any matrices until you
>> have responded to browser:numberOfRowsInColumn: with a non-zero value?
>>
>> — F
>
> That's possible, but I've tested adding items to the columns and
> SpecialMatrix's initWith...: doesn't get called.
>
> I do want to point out that I'm implementing
> browser:numberOfChildrenOfItem: not browser:numberOfRowsInColumn, does that
> make a difference?
>
> Thanks!
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