1.Sh*t: *Never* respond with a webmailer. I will copy my answers to the last mails tomorrow, when I'm at work. However Markus can do this, too.
>I too have something similar I'm trying to tackle ... > >I'd like binding to show/hide a label item based on a value in an >array. I've thought about using a transformer but was not able to make >that work. > >Any suggstions would be great. 2. The hide property of a view is a "single item". you can bind a "single property" to an array by 2.1. using a aggregate (@min et al.) to make it a "single property" 2.2. using a selection,that refers to one item inside the array. If you have an array of an array you need a "double aggregate" (I think, that this is not possible) or by two selections of two array controllers (the selection inside the backend array as a(to-many) property of the selection inside the frontend array) If you describe your model more closely, somebody would help you. Cheers, Amin > >jack > >On Aug 15, 2008, at Fri-08 /15 /08-2:10 PM, TouchCab Developer wrote: > >> Hi list. >> >> I'm new to the list and fairly new to cocoa, although many years of >> programming assembler, C and C++ helps a lot. I'm getting the hang >> of Objective-C and enjoying it very much. >> >> In my App Delegate file I keep an NSMutableArray of "base" objects >> which is my application's data core. >> I need an arbitrary number of Windows/Panels to access this array, >> and show/manipulate the contents of one of the base objects, >> selectable by a designated key in my object using an NSTableView in >> the window. This works nicely for most objects inside the base >> objects, binding an NSArrayController to the array. >> >> Each base object, however, holds an NSMutableArray of NSNumbers. I >> want the boolean value of these NSNumbers to represent the state of >> an equal number of buttons in the window, so that if one of the >> NSNumbers changes its value, the state of the corresponding NSButton >> changes as well. >> >> The message flow is: >> 1) Click button -> IBAction: send message to network device and >> reset button to its former state (to show nothing happened yet). >> 2) Receive reply from network device -> update the NSNumber, thereby >> updating the state of the button to show the user that something >> happened out there >> >> The reason for doing it this way is I want to show the user that the >> change actually took place in the network device, and not just the >> button changing state, assuming everything went well. I use an on/ >> off button, since momentary buttons don't show their state. >> The reply from the network device holds information about the index >> in the array, and I can get as far as setting the NSNumbers in the >> nested array using replaceObjectAtIndex from the input stream >> handler, but I can't bind that array to the button states. >> >> I have tried a second NSArrayController (well, I've tried a lot of >> things), and I can bind to the nested array, but I can't for the >> life of me figure out how I bind the NSNumbers in the nested array >> to my button states. Perhaps I need to place the buttons in an array >> and bind the contents of the array in the base object to the >> contents of the array in the NSWindowController? >> For now, I have scrapped the nested array altogether and have a >> bunch of internal variables with getters and setters in both ends. >> In the input stream handler, I build a selector to the setter >> functions from the index information. It works, but it seems very un- >> cocoa-ish, and it's certainly not pretty. >> >> Does anyone know how to do this? >> >> Regards, and thanks in advance, >> Jens >> >> >> >> >> >> >> _______________________________________________ >> >> Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) >> >> Please do not post admin requests or moderator comments to the list. >> Contact the moderators at cocoa-dev-admins(at)lists.apple.com >> >> Help/Unsubscribe/Update your Subscription: >> http://lists.apple.com/mailman/options/cocoa-dev/intrntmn%40aol.com >> >> This email sent to [EMAIL PROTECTED] > >_______________________________________________ > >Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) > >Please do not post admin requests or moderator comments to the list. >Contact the moderators at cocoa-dev-admins(at)lists.apple.com > >Help/Unsubscribe/Update your Subscription: >http://lists.apple.com/mailman/options/cocoa-dev/negm-awad%40cocoading.de > >This email sent to [EMAIL PROTECTED] _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
