On Jun 23, 2009, at 22:27, Graham Cox wrote:
I have a table view that displays the contents of a dictionary.
The values can be string data or numeric data. For numeric, I want
to use a formatter to make it nice and pretty, but for string data I
want to display it verbatim. If I attach a formatter to the text
cell it refuses to validate pure string input. Is there a way to set
up the formatter this way, or do I need to either create a special
formatter or apply the formatter selectively for different rows (if
so, how?).
(a) Use the delegate, something like (untested, obviously):
-(void)tableView:(NSTableView *)aTableView willDisplayCell:(id)aCell
forTableColumn:(NSTableColumn *)aTableColumn row:(NSInteger)rowIndex {
if (!<this is the correct column>)
return;
id objectValue = [self.delegate tableView: self
objectValueForTableColumn:aTableColumn row:rowIndex;
// or find the data directly from your data model, if not using a
data source
if (objectValue isKindOfClass: [NSNumber class])
aCell.formatter = myFormatter;
else
aCell.formatter = nil;
}
(b) Add a string version of the property to your data model, using a
suitable formatter internally, and bind the column to that.
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