Re: [Fxruby-users] Sorting an IconList

[Lyle J. <ly...@kn...>]

On Feb 26, 2004, at 8:56 AM, Jamey Cribbs wrote:

> Sorry if this question has been answered.  I googled but did not find
> anything...
>
> I'm trying to sort an IconList by the column that is clicked when the
> user clicks a column header.

OK.

> If I use the sortItems method, it just sorts by the first column.

Yes, this is indeed the default sorting method. To sort the items 
differently, you need to override the icon item's <=> method, as you 
would generally do for sortable Ruby objects. Of course, since this 
isn't documented, you would have a hard time knowing that ;)

Please see the attached program for a contrived, but hopefully 
illustrative, example. ;)

> I tried using sort_by:
>
> @iconlist.sort_by {|item| item.getText.split("\t")[@clickedColumn]}

Remember that Enumerable#sort_by doesn't do an in-place sort, but 
rather returns a new array of the sorted items, e.g.

	# After this, anArray is still unsorted!
	sortedArray = anArray.sort_by { ... }

> Is there a way to sort the IconList by anything other than the first 
> column?

If you have additional questions after checking out the attached 
example, please let me know. And I'll try to add some docs for this the 
next time around ;)

Hope this helps,

Lyle