Re: bindings via file's owner don't update
Re: bindings via file's owner don't update
- Subject: Re: bindings via file's owner don't update
- From: Mikkel Eide Eriksen <email@hidden>
- Date: Tue, 30 Nov 2010 06:36:21 +0100
On Nov 30, 2010, at 3:18 AM, Quincey Morris wrote:
> On Nov 29, 2010, at 08:10, Mikkel Eide Eriksen wrote:
>
>> Reading up on the documentation, I guess what I should do in my Document init is this:
>>
>> if (![self loadingWindowController])
>> [self setLoadingWindowController:[[MyLoadingWindowController alloc] init]];
>> [self addWindowController:loadingWindowController];
>
> Probably not. Adding the window controller to the document's window controller list has side effects (such as making your window appear in the Window menu, which likely isn't desirable). Your original approach seems like the more natural design.
Yeah it turns out I had to jump through some hoops when I added it that way, so I'll probably put it back.
> Regarding your problem, you didn't by chance forget to uncheck "visible at launch" in the nib file that contains your "loading" window? That could produce the sort of results you're seeing.
"visible at launch" is unchecked (and the NSTextFields have "continuously updates value" checked).
> Alternatively, there could be a problem with the KVO compliance of your document's "objectCount" property. Are you certain it's compliant?
It's defined & implemented like this so I don't think there are any compliance issues:
@property (readwrite, assign) NSInteger objectCount;
@synthesize objectCount;
> Alternatively, you might be reading the document contents on a background thread, and therefore triggering "objectCount" KVO notifications in that thread. For the user interface to work, the KVO notifications need to be issued on the main thread.
I'm updating the objectCount property during readFromURL:ofType:error: - could that be it?
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