Thanks for the explanation. I wonder why it supports multiple selection in the first place, when you can do almost nothing with it?
Georg > On 19. Sep 2018, at 18:26, Martin Wierschin <mar...@nisus.com> wrote: > > So far as I know this is not possible with a stock NSTextView. The selected > range array is automatically normalized by NSTextView, to sort and coalesce > ranges as needed. If any zero-length ranges are in a given selection array, > only a single zero-length range is allowed and maintained by NSTextView. Any > other zero-length ranges are discarded straight away. > > Even if you override selection methods to coerce NSTextView to maintain > multiple zero-length selections, I’d be leery about it doing the right thing > when it comes to text insertion and other behaviors. I doubt it’s written > with multiple zero-length selections in mind. At the very least you’d > probably also need to override text insertion and insertion-point drawing, > but who knows what other things you’d need to shore up. > > If I were you and wanted to write this in the safest way possible, to ensure > no unforeseen consequences, I’d probably subclass NSTextView to add a new > property like “multipleInsertionPointIndexes”. Only your own code would need > to interact with this property. Of course you’d still have to add NSTextView > overrides to handle things and keep those indexes in sync, but this would > ensure NSTextView’s code never sees multiple zero-length selections and never > potentially enters unknown states. > > Good luck! > > ~Martin Wierschin > > >> On Sep 19, 2018, at 12:13 AM, Georg Seifert <georg.seif...@gmx.de >> <mailto:georg.seif...@gmx.de>> wrote: >> >> Hi >> >> Is it possible to make NSTextView to allow typing with multiple insertion >> points? One can set multiple selection and delete all of them at once. But >> typing only replaces the first range and ignores the other ranges. >> >> Thanks >> Georg >> _______________________________________________ >> >> Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) >> >> Please do not post admin requests or moderator comments to the list. >> Contact the moderators at cocoa-dev-admins(at)lists.apple.com >> >> Help/Unsubscribe/Update your Subscription: >> https://lists.apple.com/mailman/options/cocoa-dev/martin%40nisus.com >> <https://lists.apple.com/mailman/options/cocoa-dev/martin%40nisus.com> >> >> This email sent to mar...@nisus.com <mailto:mar...@nisus.com> _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
