[MacRuby-devel] How to use NSIndexSet with tableView data
Hi ! I'm trying to use a tableView with MacRuby. What I want to do is remove items from my data array based on the tableView selection. I used @tableView.selectedRowsIndexes but it returns a NSIndexSet and I don't know how to use it with my array. Can you give me some leads on the subject ? Thanks, ___ MacRuby-devel mailing list [email protected] http://lists.macosforge.org/mailman/listinfo.cgi/macruby-devel
Re: [MacRuby-devel] How to use NSIndexSet with tableView data
That doesn't match what I need. Ok, here is what I have : My data is the @items variable which is an array of objects. My tableView is @tableView. The action is a reaction to a click on a remove button after a selection in the table. What I want to do is something like this : def removeItems(sender) indexes = @tableView.selectedRowsIndexes @items.delete_at(indexes) @tableView.reloadData end But I can't get a way to make it work. On Sat, Oct 23, 2010 at 2:03 PM, Eloy Duran wrote: > Since an Array is a NSArray: http://bit.ly/de3kxd, maybe something > like the following? > > $ macirb > irb(main):001:0> a = ['apple', 'tuna', 'orange'] > => ["apple", "tuna", "orange"] > irb(main):002:0> indices = NSIndexSet.indexSetWithIndex(1) > => # > irb(main):003:0> fish = a.objectsAtIndexes(indices) > => ["tuna"] > > Eloy > > On Sat, Oct 23, 2010 at 1:18 PM, Pixoo wrote: > > Hi ! > > > > I'm trying to use a tableView with MacRuby. > > What I want to do is remove items from my data array based on the > tableView > > selection. > > > > I used @tableView.selectedRowsIndexes but it returns a NSIndexSet and I > > don't know how to use it with my array. > > Can you give me some leads on the subject ? > > > > Thanks, > > > > ___ > > MacRuby-devel mailing list > > [email protected] > > http://lists.macosforge.org/mailman/listinfo.cgi/macruby-devel > > > > > ___ > MacRuby-devel mailing list > [email protected] > http://lists.macosforge.org/mailman/listinfo.cgi/macruby-devel > ___ MacRuby-devel mailing list [email protected] http://lists.macosforge.org/mailman/listinfo.cgi/macruby-devel
Re: [MacRuby-devel] How to use NSIndexSet with tableView data
I already looked at those functions but I couldn't believe there was no way to obtain a simple array of the indexes list. I seams that's the case... Thanks, On Sat, Oct 23, 2010 at 2:31 PM, Alistair Holt wrote: > As always, the docs are your friend. Look up the enumeration methods in > > http://developer.apple.com/library/mac/documentation/cocoa/reference/foundation/Classes/NSIndexSet_Class/Reference/Reference.html > > -- > Alistair Holt > > > On 23 Oct 2010, at 13:14, Pixoo wrote: > > > NSIndexSet > ___ > MacRuby-devel mailing list > [email protected] > http://lists.macosforge.org/mailman/listinfo.cgi/macruby-devel > ___ MacRuby-devel mailing list [email protected] http://lists.macosforge.org/mailman/listinfo.cgi/macruby-devel
Re: [MacRuby-devel] How to use NSIndexSet with tableView data
Ok it worked \o/ I'm pretty new at ObjC (therefore I use MacRuby :D) so I don't know NS objects. Thanks again :) On Sat, Oct 23, 2010 at 2:43 PM, Eloy Duran wrote: > You’re right, I forgot to include the line that basically did: @items > -= fish. However, since an array is actually of the mutable type > NSMutableArray, you can use its API as well http://bit.ly/90436W. > > irb(main):007:0> a.removeObjectsAtIndexes(indices) > => ["apple", "orange"] > > If you find you need to work with NSIndexSet's a lot, you could go to > town and add this to NSIndexSet: http://gist.github.com/642166 > > HTH, > Eloy > > On Sat, Oct 23, 2010 at 2:14 PM, Pixoo wrote: > > That doesn't match what I need. > > Ok, here is what I have : > > > > My data is the @items variable which is an array of objects. > > My tableView is @tableView. > > The action is a reaction to a click on a remove button after a selection > in > > the table. > > > > What I want to do is something like this : > > > > def removeItems(sender) > > indexes = @tableView.selectedRowsIndexes > > @items.delete_at(indexes) > > @tableView.reloadData > > end > > > > But I can't get a way to make it work. > > > > On Sat, Oct 23, 2010 at 2:03 PM, Eloy Duran > wrote: > >> > >> Since an Array is a NSArray: http://bit.ly/de3kxd, maybe something > >> like the following? > >> > >> $ macirb > >> irb(main):001:0> a = ['apple', 'tuna', 'orange'] > >> => ["apple", "tuna", "orange"] > >> irb(main):002:0> indices = NSIndexSet.indexSetWithIndex(1) > >> => # > >> irb(main):003:0> fish = a.objectsAtIndexes(indices) > >> => ["tuna"] > >> > >> Eloy > >> > >> On Sat, Oct 23, 2010 at 1:18 PM, Pixoo wrote: > >> > Hi ! > >> > > >> > I'm trying to use a tableView with MacRuby. > >> > What I want to do is remove items from my data array based on the > >> > tableView > >> > selection. > >> > > >> > I used @tableView.selectedRowsIndexes but it returns a NSIndexSet and > I > >> > don't know how to use it with my array. > >> > Can you give me some leads on the subject ? > >> > > >> > Thanks, > >> > > >> > ___ > >> > MacRuby-devel mailing list > >> > [email protected] > >> > http://lists.macosforge.org/mailman/listinfo.cgi/macruby-devel > >> > > >> > > >> ___ > >> MacRuby-devel mailing list > >> [email protected] > >> http://lists.macosforge.org/mailman/listinfo.cgi/macruby-devel > > > > > > ___ > > MacRuby-devel mailing list > > [email protected] > > http://lists.macosforge.org/mailman/listinfo.cgi/macruby-devel > > > > > ___ > MacRuby-devel mailing list > [email protected] > http://lists.macosforge.org/mailman/listinfo.cgi/macruby-devel > ___ MacRuby-devel mailing list [email protected] http://lists.macosforge.org/mailman/listinfo.cgi/macruby-devel
