Cocoa: NSComboBoxCell in NSTableColumn

[Christian Witt]

Hi,

my application uses a NSTableView with one NSTableColumn, which needs
a combobox instead of a texfield as the data-cell. Creating a
NSComboBoxCell-object and setting the data-cell of the
NSTableColumn-object works fine. But the combo-box doesn't look good
with this big blue down-pointing arrow in the table.

I recognized that Interface Builder uses in the Class-inspector-panel
a table-column with a combo-box. But this combo-box has as small black
double-arrow (pointing up and down) and I can't figure out, how to
create such a combo-box.

Any hints?

thanks in advance

Christian

[M Taylor]

[email]christian.witt@epost.de[/email] (Christian Witt) wrote in message news:<50052383.0309101102.5d000cb7@posting.google. com>...

> Hi,
>
> my application uses a NSTableView with one NSTableColumn, which needs
> a combobox instead of a texfield as the data-cell. Creating a
> NSComboBoxCell-object and setting the data-cell of the
> NSTableColumn-object works fine. But the combo-box doesn't look good
> with this big blue down-pointing arrow in the table.
>
> I recognized that Interface Builder uses in the Class-inspector-panel
> a table-column with a combo-box. But this combo-box has as small black
> double-arrow (pointing up and down) and I can't figure out, how to
> create such a combo-box.
>
> Any hints?
>
> thanks in advance
>
> Christian

Hi Christian,

I'm also trying to create a nicer combobox in the NSTableView, if
you've figured this out, please let me know.

Thanks

Moray

[Stephan Eggermont]

M Taylor <bigmugen@freeuk.com> wrote:

>>
>> Any hints?
>>

Equivalent code with a popup:

-(void)awakeFromNib{
int count;
id klantPopUpCell;
klantPopUpCell = [[[NSPopUpButtonCell alloc] initTextCell: @"" pullsDown: NO] autorelease];
for (count = 0; count < 4; count++)
{
[klantPopUpCell insertItemWithTitle: [NSString stringWithFormat: @"Klant %i", count] atIndex: count];
}
[klantPopUpCell setEditable: YES];
[klantPopUpCell setBordered: NO];
[[tableView tableColumnWithIdentifier: @"Klant"] setDataCell: klantPopUpCell];
}

The problem with NSPopUpButtonCells is that they don't have a datasource.
So you might have to override
-(void)tableView:(NSTableView*)aTableView
willDisplayCell:(id)aCell
forTableColumn:(NSTableColumn*)aColumn
row:(int)rowIndex;
to fill the popup if the menu is different for each row.

-(id)tableView:(NSTableView*)aTableView
objectValueForTableColumn:(NSTableColumn*)theColum n
row:(int)rowIndex;
expects a number for the currently selected menuitem.

Stephan Eggermont
Sensus, systems that make sense

[Christian Witt]

Stephan Eggermont <stephan@stack.nl> wrote in message news:<bk4gk6$hda$2@news.tue.nl>...

> Equivalent code with a popup:
> The problem with NSPopUpButtonCells is that they don't have a datasource.
> So you might have to override
> -(void)tableView:(NSTableView*)aTableView
> willDisplayCell:(id)aCell
> forTableColumn:(NSTableColumn*)aColumn
> row:(int)rowIndex;

The next problem with NSPopUpButtonCell is, that it does not behave
like a textfield and has no autocompletion. I want the behaviour of an
NSComboBoxCell but not that ugly blue arrow.

Ciao

Christian

[Stephan Eggermont]

Christian Witt <christian.witt@epost.de> wrote:

> The next problem with NSPopUpButtonCell is, that it does not behave
> like a textfield and has no autocompletion. I want the behaviour of an
> NSComboBoxCell but not that ugly blue arrow.

I've tried that, and it seems that there are some bugs in NSComboBoxCell.
The position and size of the 'blue arrow' are wrong. Not that the
PopUpButton is any better, though. Just put one on a window, and
make it small, pulldown, square and do a size to fit.

Stephan