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Questions tagged [cocoa-bindings]

Cocoa bindings is Apple’s implementation of the Model-View-Controller design pattern for Mac OS X applications. It provides technologies that automate the synchronisation of domain data and the user interface elements that present them.

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Update Selected Core Data Object from Table View

I have hit a bit of a brick wall and am looking for some help with a Cocoa OSX app i am trying to put together. I have a single entity in core data, which is being populated from a Dictionary pulled from the net. The core data objects are then…
Gareth Jeanne
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Collection Object operator for @firstObject Key-value coding KVC

I'm often required to retrieve the 1st object belonging to a Set. (Using that object as a representative of that set.) I envision a Collection Object operator, akin to the @unionOfObjects BUT clearly @firstObject Is it possible to create such a…
Gabe Rainbow
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the programmatic equivalent of binding an nsarraycontroller to a nsobjectcontroller, selection, content

i've split up my UI into various nib files. now, i use two nswindowcontroller subclasses with nsarraycontroller and nsobjectcontroller IBOutlets. The nwwindowcontrollers are the File's Owner in their respective nibs. the controllers are assigned in…
Gabe Rainbow
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Carbon in Cocoa Crashing: EXC_BAD_ACCESS after NSAutoreleasePool is released

I'm developing a Cocoa user interface for a Photoshop CS3 plugin using Bindings. (Carbon in Cocoa, since PS is a Carbon app) I'm getting a EXC_BAD_ACCESS error when I close my modal NSWindow and the NSAutoreleasePool releases. I believe it has…
Jess Bowers
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nsobject controller linked across two nib (xib) files. declaring nib instantiation

Apple's resource programming guide (RPG) states "it is better to distribute components across multiple nib files."... therefore, i have an associate window nib (Nib 2) that has an nsobjectcontroller that needs to be linked (selection self) to a…
Gabe Rainbow
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Modifications on objects in NSUserDefaults-bound NSArrayController not saving

In my project, I have an NSArrayController bound to save to a the application's standard defaults (NSUserDefaults). This in itself works perfectly - objects added are saved and restored as expected. However, if I programmatically modify one of the…
John Wells
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Updating Value in Core Data

I'm trying to write a simple stock check program, and I have a Table View binded to Core Data. The table has 3 columns: Model, Price and Quantity In Stock. I have a NSTextField and a NSButton underneath this, so that the user can enter the quantity…
Michael
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Fetch data by date range using Interface Builder

I have an NSTableView that is done using the typical IB and data bindings. It works well. However I need to put in a Segmented Control to indicate date range. So for example, if user clicks on the "Last Year" segmented control button, the table…
Teo Choong Ping
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Setting NotANumberSymbol to an empty string?

why NSNumberFormatter's method setNotANumberSymbol:(NSString *)string ignores the empty string as a parameter (@"")? It even ignores the string, if it contains only spaces and zeros (@" 0 0 0 ")? Is there any way to bypass this functionality, and to…
marko
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Cocoa : Refresh NSObjectController after unarchiving Data from disk

I have an Object bound to the user interface with a NSObjectController. I am able to archive the Object and unarchive it later. This works fine so far. In the Debugger I can see the object holds the data I saved in a previous session. The remaining…
TalkingCode
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Bind NSTextField's editable to an NSProgressIndicator state

My form has an activity indicator and a couple text fields. I'd like to use bindings such that if the activity indicator is spinning/visible then the text field's editable flag is disabled. When it stops spinning and disappears then the text field…
Gargoyle
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How to set a Core Data attribute in Entity2 via a relationship from Entity1 with Cocoa Bindings

I have two entities in my Core Data project: Entity1 and Entity2. I've setup an array controller for Entity1 which displays a table view and a few properties in text fields next to it. It's a simple app for data entry, nothing fancy - all built…
Jay Versluis
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Can you pass a TreeController between views?

I have a standard Master-Detail Interface and I'm using Coredata and cocoa bindings. The Master list uses a NSOutlineView and a NSTreeController, these items remain static but different details views are swapped in and out. So, how do I set the…
Cory
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Changing cocoa bindings value programmatically

I have an NSButton in my preferences to interact with adding the application to the LoginItems. If the adding of the login item fails, I want to uncheck the box so the user doesn't get a false sense that it was added to the login items. However,…
Bot
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Get sum of values from core data attributes displayed in an outline view populated from a tree controller

I am attempting to learn more about creating apps for OS X and have run into an issue that google has not been able to provide an answer for. The example app I am creating is an RSS reader. I have Core Data Entities of Folder and Feed, with Feed…
OneTrueBob
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