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Re: Source Lists



On Oct 26, 2007, at 2:31 PM, Thomas Davie wrote:

Hi list,
Leopard has the ability to specify that an outline view is a source list, but what I haven't figured out, is how to replicate the headings (e.g. "DEVICES" in Finder). I could of course return an NSAttributedString to the outline view, but I get the feeling that's the wrong way to do it (TM). I then have to guess what styles the text should have, and as soon as apple update, it will look odd.


Can anyone recommend to me what the right way to do this is?


I guess they've officially given the go-ahead, so here's a Leopard- only solution to make things look right. Getting the selection and drag behavior right is left as an exercise for the reader.

Implement the following delegate methods for NSOutlineView with the source list style turned on. Assuming, of course, that you're using a subclass of NSTextFieldCell for display. Return a regular NSString as the object value for the table column.

- (BOOL)outlineView:(NSOutlineView *)sender isGroupItem:(id)item {
	if (ITEM IS HEADING)
		return YES;
	else
		return NO;
}

- (void)outlineView:(NSOutlineView *)sender willDisplayCell:(id)cell forTableColumn:(NSTableColumn *)tableColumn item:(id)item {
if (ITEM IS HEADING) {
NSMutableAttributedString *newTitle = [[cell attributedStringValue] mutableCopy];
[newTitle replaceCharactersInRange:NSMakeRange(0,[newTitle length]) withString:[[newTitle string] uppercaseString]];
[cell setAttributedStringValue:newTitle];
[newTitle release];
}
}


-> jp
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 >Source Lists (From: Thomas Davie <email@hidden>)



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