Re: Starting editing a Row as soon as it is Added.

Please excuse the brevity -- sent from my phone

On 19 Oct 2009, at 06:53, Joshua Garnham <joshua.garnham-/[email protected]>  
wrote:

> Ah, I see. Thanks for the help Hamish.
> So do i need to use the NSTableView's selectedRow method?

Are you asking, or are you saying you tried this and it didn't work?

H

> Like …
>     NSWindow *w = [outlineView window];
>     BOOL editingEnded = [w makeFirstResponder:w];
>     if (!editingEnded) {
>         return;
>     }
>
>     NSObject *p = [treeController newObject];
>     [treeController addObject:p];
>
>     // Find the row of the new object
>     int row = [outlineView selectedRow];
>
>     // Start editing in the second column
>     [outlineView editColumn:1
>                       row:row
>                 withEvent:nil
>                    select:YES];
>
> Josh
>
> From: Hamish Allan <[email protected]>
> To: Joshua Garnham <joshua.garnham-/[email protected]>
> Cc: "[email protected]" <[email protected]>
> Sent: Monday, 19 October, 2009 0:16:40
> Subject: Re: Starting editing a Row as soon as it is Added.
>
>
>
> Please excuse the brevity -- sent from my phone
>
> On 18 Oct 2009, at 18:00, Joshua Garnham  
> <joshua.garnham-/[email protected]> wrote:
>
> > The way I got this code was by reading Aaron Hillegass' Cocoa  
> Programming for Mac OS X and there was a specific section explaining  
> how to Start editing a Row as soon as it is added and I've tried to  
> adapt that code because he had an array controller and  I have a  
> tree controller he called arrangedObjects then compared the object p  
> to the ones in that array but calling arrangedObject on a tree  
> controller does not return an array.
>
> I think what Christiaan is driving at is that you need to consider  
> *why* it does not return an array, rather than just trying to  
> substitute some other method because that *does* return an array.
>
> The relationship between model and view is more complex for a tree /  
> outline view than an array / table view, not least because branches  
> can be expanded and collapsed.
>
> Luckily most of it is taken care of for you because you can  
> determine which item is selected. You just need to know which row  
> that item is at. NSOutlineView derives from NSTableView, so it has a  
> method for this.
>
> H
>
> > So I am not sure what I need to change/ What I've got wrong .
> >
> > Josh.
> >
> >
> > ________________________________
> > From: Christiaan Hofman <[email protected]>
> > To: Joshua Garnham <joshua.garnham-/[email protected]>
> > Sent: Sunday, 18 October, 2009 17:22:32
> > Subject: Re: Starting editing a Row as soon as it is Added.
> >
> > Why don't you read the docs? It's all in there. And the answer is  
> no.
> >
> > Christiaan
> >
> >
> > On Oct 18, 2009, at 16:16, Joshua Garnham wrote:
> >
> > Ok, So do I need to retrieve all the objects in the Outline View  
> to put in the NSArray?
> >> And what is the Object p then if it's not an element in the array?
> >>
> >>
> >> Josh.
> >>
> >>
> > ________________________________
> > From: Christiaan Hofman <[email protected]>
> >> To: Joshua Garnham <joshua.garnham-/[email protected]>
> >> Cc: [email protected]
> >> Sent: Sunday, 18 October, 2009 14:51:40
> >> Subject: Re: Starting editing a Row as soon as it is Added.
> >>
> >>
> >>
> >> On Oct 18, 2009, at 14:20, Joshua Garnham wrote:
> >>
> >> Oh, I see.
> >>> So from your reply I tried this:
> >>>
> >>>
> >>>  NSObject *p = [treeController newObject];
> >>>  [treeController addObject:p];
> >>>
> >>>  // Find the row of the new object
> >>>  NSArray *a = [treeController selectedNodes];
> >>>  int row = [a indexOfObjectIdenticalTo:p];
> >>>
> >>>  // Start editing in the first column
> >>>  [outlineView editColumn:0
> >>>
> >>>  row:row
> >>>              withEvent:nil
> >>>                  select:YES];
> >>>
> >>> However this still does not work, it just adds an object but  
> does not begin editing it.
> >>>
> >>> Josh
> >>>
> >>
> >>
> >>
> >> And what makes you think that the index of the object in the  
> selected nodes has anything to do with the row index in the  
> outlineview? Moreover, why do you even think that the object p is an  
> element of the array a
> >> (hint: it's not).
> >>
> >>
> >> Christiaan
> >>
> >>
> >>
> > ________________________________
> > From: Christiaan Hofman <[email protected]>
> >>> To: Joshua Garnham <joshua.garnham-/[email protected]>
> >>> Cc: [email protected]
> >>> Sent: Sunday, 18 October, 2009 10:44:02
> >>> Subject: Re: Starting editing a Row as soon as it is Added.
> >>>
> >>>
> >>> On Oct 18, 2009, at
> >>> 10:41, Joshua Garnham wrote:
> >>>
> >>>> I have an NSOutlineView and what I want to happen is that when  
> a row is
> >>>> added I want the row that has been added to Start Editing  
> immediately
> >>>> like when you double click on a row.
> >>>>
> >>>> I've tried this:
> >>>>
> >>>> NSObject *p = [treeController newObject];
> >>>> [treeController addObject:p];
> >>>>
> >>>> NSManagedObjectContext *moc = [self managedObjectContext];
> >>>> NSEntityDescription *entityDescription = [NSEntityDescription
> >>>> entityForName:@"projects" inManagedObjectContext:moc];
> >>>> NSFetchRequest *request = [[[NSFetchRequest alloc] init]  
> autorelease];
> >>>> [request setEntity:entityDescription];
> >>>>
> >>>> NSError *error = nil;
> >>>> NSArray *a = [moc
> >>> executeFetchRequest:request error:&error];
> >>>>
> >>>> // Find the row of the new object
> >>>> int row = [a indexOfObjectIdenticalTo:p];
> >>>>
> >>>> // Start editing in the second column
> >>>> [outlineView editColumn:1
> >>>>                  row:row
> >>>>            withEvent:nil
> >>>>              select:YES];
> >>>>
> >>>> However, it seems that just edits any row in my Outline View.
> >>>> What have I done wrong??
> >>>>
> >>>> Josh
> >>>
> >>> I'm not surprised this won't work, I'm much more surprised you  
> actually expect it to work. Why do you think that the index of an  
> object in an arbitrary fetch result
> >>> is in any way related to the row for that object in your  
> outlineView?
> >>>
> >>> So you just need to figure out the row from inspection of the  
> real display model, i.e. ask the treeController and/or the  
> outlineView. You definitely want the treeController to select  
> inserted objects, so you can just get the selected node afterwards.  
> And you can get its row from the outlineView.
> >>>
> >>> Christiaan
> >>>
> >>>
> >>>
> >>>
> >>
> >>
> >>
> >
> > Send instant messages to your online friends http://uk.messenger.yahoo.com
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