Update bound dictionary based on NSTextFieldCel l's edited value

• Justin Williams Update bound dictionary based on NSTextFieldCel l's edited value Jun 05 2009, 15:44
  I'm working on porting some ancient code (10.2 era) from NSCoding/
  plist based archiving to using Core Data. I have an NSOutlineView with
  a custom NSTextFieldCell.  The outline view is bound to an
  NSTreeController to provide the data.
  
  The bindings model looks like this:
  
  NSTreeController: Managed Object Context ->
  Controller.managedObjectContext
  
  NSOutlineView's NSTableColumn Value -> Tree
  Controller:arrangedObjects:itemDictionary
  
  The NSOutlineView has a custom NSTextFieldCell subclass that adds an
  image next to the text field, so I am passing the NSManagedObject's
  values to it as an NSMutableDictionary called itemDictionary so I can
  pull and set the title and isChecked key values.
  
  Where I am running into issues is updating the text field's value and
  passing that changed value back to my managed object instance. After
  the user double-clicks on the title value and edits it, it is passed
  to -(id)objectValue, but I'm not sure what the next step is to get the
  update propagated to my NSManagedObject instance. The code I have thus
  far for reading and setting values in my NSTextFieldCell subclass is
  below:
  
  - (void)setStringValue:(NSString *)aString {
    [super setObjectValue:aString];
  }
  
  - (void)setObjectValue:(id <NSCopying>)anObject {
    id cellValues = anObject;
  
    [super setObjectValue:[cellValues valueForKey:@"title"]];
    [self setCheckState:[[cellValues valueForKey:@"isChecked"]
  integerValue]];
  }
  
  - (id)objectValue {
    return [super objectValue];
  }
  I think I'm on the right path in how to implement this the proper way,
  but this last hurdle has my stuck.  Anyone shed some light?
  
  Thanks!
  
  -
  Justin Williams
  <justin...>
  http://secondgearsoftware.com/
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