Re: Autosaving the selection in an NSTableView
Re: Autosaving the selection in an NSTableView
- Subject: Re: Autosaving the selection in an NSTableView
- From: Sandy McGuffog <email@hidden>
- Date: Tue, 14 Apr 2009 17:34:17 +0200
Not sure about NSTableViews, but with NSOutlineViews, which I'd think
behave the same way, the secret sauce is to make sure that your items
have all of persistentObjectForItem, initWithPersistentObject, isEqual
and hash consistently implemented. Reason being that what is stored to
your prefs file is the persistent object of the selected item, and on
restart the framework first compares hashes between the
"reconstituted" persistent object and what has been loaded into the
view, then, if those match, calls isEqual.
Sandy
On Apr 13, 2009, at 5:32 AM, Martin Stanley wrote:
I have a core-data document-based application that uses a
NSTableView with an NSArrayController as its data source. I have
managed to figure out the magic IB incantations required to save the
column sort, order and hidden data to the shared NSDeafulsController.
What I would like to do is to also save the current selection of the
table across application invocations. I have tried the obvious:
- bind the array controller's selected indexes to the Shared
Defaults controller - no luck
- bind the tableview's selected indexes to the Shared Defaults
controller - no luck
I even tried to get the select programmatically, but when I tried
the callback methods I thought appropriate:
- windowControllerDidLoadNib
- applicationDidFinishLaunching
I found that the array controller was not yet loaded with data and
therefore had no selection.
Can anyone shed some light on this?
Thanks,
Martin
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