Hello Cocoa listers.
What is the best/right way to obtain the context object for a piece of
text that has been edited by the editing system (i.e. in a cell in
NSOutlineView) once the textDidEndEditing notification is delivered to
an observer?
This is the second or third time I have added text editors in controls
where I've wanted to capture the final state of the editor to set it
into an object (i.e. not doing this automatically with binding).
Each case has been a bit different. In this case I have a fairly
straight-forward NSOutlineView and a custom cell really just to do
some specific text editing stuff.
Pretty much everything is working fine - but unlike previous occasions
when I have used the field editor, in this case once I get my
"textDidEndEditing" notification, I need to find the object that the
editor is representing in order to update a property. What I'm
wondering is how this is _supposed_ to be done.
The actual notification of textDidEndEditing does not include much
contextual information AFAICS. It does provide you with the NSText
object that handled the editing, from which I can happily get the
final text.
However, I'm not sure what the "best practice" is for obtaining the
'represented object' to which this text should be assigned. I've
chosen to implement the notification method in my custom cell class,
which works fine, but the instance of this cell appears is not
initialised with outlineView:willDisplayCell:forTableColumn:item.
Therefore the cell's representedObject is nil and I cannot use this
way to get the context.
I could simply ask the control (the outline view) what the currently
selected row is, and get the object to update from the arrangedObjects
of my NSTreeController. This seems a very 'long way round' though. I
suspect I'm simply missing some way to have the editing system
remember a context object for me and pick it up later (but I don't see
anything obviously doing this in the NSText interface, that I'm
guaranteed to be able to obtain and use from the textDidEndEditing
notification).
-- Luke
_______________________________________________
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 arch...@mail-archive.com
