Mailing Lists: Apple Mailing Lists
Image of Mac OS face in stamp
 
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Binding NSTableColumn.textColor to Two Things;

Hello,

I am experiementing with Cocoa bindings, and am unsure how to achieve what it is I'm looking for. I'll explain what I have now.

I have done the classic NSTableView bound to a NSArrayController that uses my own custom data class. My code is based loosely on mmalc's "ToDo application" on his sample page (http://homepage.mac.com/mmalc/CocoaExamples/ToDos.zip), in that I use a custom NSValueTransformer to format the text color of column 1 based on the value in column 2 (which in my case is an integer).

Now everything works good, except I want my custom NSValueTransformer to not use hardcoded colors (i.e. it maps 0-20 as 'red', 21-40 as 'orange', etc). Instead I want to drive this through the NSUserDefaultsController and the Shared User Defaults. I've built a preference panel that correctly binds to this, and that part is working great. I've also modified my NSValueTransformer code to read its values form the Shared User Defaults, and this works good as well.

The problem is that a change on the preference panel only ripples through to the column of the table view when I change the value in the table view (and it then tries to reapply the transformer which gives the correct dynamic NSColor). I would like a change to ripple through to the text color immediately upon change in the preference panel.

Basically I want to still say that the text color of column 1 is bound to the "MyTransformer(arrangedObjects.myIntValue) [NSArrayController]", but in addition I want it to also be bound the different colors I stored in Shared User Defaults...not really bound to it, but I want that column to redraw itself if any of those colors changes...

Am I missing some base concept here? Or is this a limitation of bindings?

- Matt
_______________________________________________
cocoa-dev mailing list | email@hidden
Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/cocoa-dev
Do not post admin requests to the list. They will be ignored.



Visit the Apple Store online or at retail locations.
1-800-MY-APPLE

Contact Apple | Terms of Use | Privacy Policy

Copyright © 2007 Apple Inc. All rights reserved.