Re: One NSTextView, several model objects - how to synchronise undo manager
Re: One NSTextView, several model objects - how to synchronise undo manager
- Subject: Re: One NSTextView, several model objects - how to synchronise undo manager
- From: Rui Pacheco <email@hidden>
- Date: Wed, 17 Mar 2010 13:46:03 +0000
Is there a way to bind the text view's undo manager to an instance of
NSUndoManager on my model object?
I can get to the text view undo manager but I don't seem to be able to set
it.
On 17 March 2010 13:34, Keary Suska <email@hidden> wrote:
> On Mar 16, 2010, at 6:09 PM, Rui Pacheco wrote:
>
> > I've a window with a fairly complex layout - one NSTextView and several
> > tables, all displaying different types of data. To keep things in order,
> > I've created a model object that holds the data for all these interface
> > elements. The window may also hold several instances of the model object
> and
> > I list them in a table.
> >
> > My problem is how to keep the undo manager for the text view synchronised
> > with a particular instance of a model object. As the user switches
> between
> > model objects, I want him to be able to do cmd + z transparently with the
> > window knowing what changed in that particular instance.
> >
> > Some research seems to indicate that using core data would give me this
> for
> > free - make my model objects extend NSManagedObject and I would have undo
> > for free. Is this correct?
>
> More or less. You may want to keep in mind that "out of the box" that undos
> will be tracked in the order they are registered across all objects. I.e.,
> user changes textfield value, tabs to textview and makes a change, then hits
> undo twice, the textfield change will get undone.
>
> HTH,
>
> Keary Suska
> Esoteritech, Inc.
> "Demystifying technology for your home or business"
>
>
--
Best regards,
Rui Pacheco
_______________________________________________
Cocoa-dev mailing list (email@hidden)
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:
This email sent to email@hidden