Re: outlineViewSelectionDidChange not called

FROM : Adam Gerson
DATE : Wed Mar 26 04:24:27 2008

I take that back. [outlineView selectedRow] does appear to tell the
absolute truth. So I should now be able to try what you said and tie
the tree controller's @"selectionIndexPaths" to [outlineView
selectedRow]. I will report back my results...

Adam


On Tue, Mar 25, 2008 at 11:12 PM, Adam Gerson <<email_removed>> wrote:
> I think the big problem I am having is that an OutlineView doesn't
>  always accurately update its index paths to match the selection the
>  GUI is displaying. So I dont have accurate information to pass onto
>  the tree controller.
>
>  Adam
>
>
>
>
>  On Tue, Mar 25, 2008 at 10:29 AM, Jonathan Dann <j.p.<email_removed>> wrote:
>  > Have your tried binding the tree controller's @"selectionIndexPaths"
>  >  binding to a variable in your model object?
>  >
>  >  I havent tried it but it seems that you can do this in IB and then get
>  >  the model to observe the bound instance variable and you cab then see
>  >  each time the variable changes. Not sure if it will cover all the
>  >  bases you need though.
>  >
>  >  You'd get an array if selection index paths and then just see if the
>  >  count of the array is 1 for single selection or more if you have
>  >  multiple.
>  >
>  >  Jonathan Dann
>  >
>  >
>  >
>  >  On 25 Mar 2008, at 05:42, "Adam Gerson" <<email_removed>> wrote:
>  >
>  >  > Hey Jens,
>  >  >
>  >  > Thanks for getting back to me.
>  >  >
>  >  >>> When I
>  >  >>> remove an object from the TreeController the row representing the
>  >  >>> deleted object disappears and OutlineView selects the next row, but
>  >  >>> does not send a notification to the delegate method
>  >  >>> outlineViewSelectionDidChange.
>  >  >>
>  >  >> IIRC, the notification is only sent on user-generated selection
>  >  >> changes. If you programmatically change the selected item (directly
>  >  >> or
>  >  >> indirectly) you need to call your observer method manually, if
>  >  >> necessary.
>  >  >>
>  >  >
>  >  > There are times when this is a problem. My observer method uses the
>  >  > "currently selected tree node" as the object to work with. However,
>  >  > after a programatic insert, the inserted object doesn't become the
>  >  > selected item of the treecontroller. I have selectsInsertedObjects set
>  >  > to YES. Likewise, after an undo of a delete the outline view
>  >  > graphically selects the newly resurected object, but that object does
>  >  > not become the tree controller's selected object.
>  >  >
>  >  > What I need is a way to ensure the OutlineView's selection and the
>  >  > TreeController's selection always are in sync. I thought this was the
>  >  > promise of bindings.
>  >  >
>  >  >>
>  >  >>> On a separate but related note, when I add an object to the
>  >  >>> TreeController is there away to get the OutlineView to automatically
>  >  >>> select the new row?
>  >  >>
>  >  >> Check the "Select Inserted Objects" box in the IB inspector for the
>  >  >> controller.
>  >  >>
>  >  > I have this box checked. It appears not to work when I
>  >  > programmatically insert an object. It does work if I bind a button to
>  >  > the insert method of the controller.
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