Does Cocotron support complex tree controls?

[André Pareis]

Hi Cocotronians,

I need a tree control in my application with custom node types (specific editing behavior), node images and drag-and-drop support. I started with NSTreeController but I figured out it is not implemented in Cocotron. Not a big problem as it wouldn't have helped with the custom node types anyway.

Later I found the nice Apple example DragNDropOutlineView which is very close to what I need. However, I just found out that it requires stuff that is missing in Cocotron. As far as I can see it would require support for @protocol NSPasteboardWriting, NSPasteboardReading which are not available and it makes use of  @class NSTreeNode but I found the corresponding NSTreeNode.h in Cocotron AppKit to be completely empty.

So, my question is, do I have any chance to get such a tree control working with Cocotron as it is today? Do I just need to switch over to NSOutlineViewDataSource and NSOutlineViewDelegate or is there more to it?

Thanks!

[Christopher Lloyd]

Hey André,

These classes/protocols seem fairly easy to add, I would take the approach of just adding them to Cocotron yourself and going along that path. Is there some piece which you think is particularly troublesome?

Chris

[André Pareis]

Implementing these classes seems to be doable. Thank you for encouraging me ;) 

With regard to the question that is troubling me the most - I am just totally unsure with the NSOutlineView in Cocotron. My NSTreeController prototype was working in Cocoa but it failed in Cocotron. Do I need to take the NSOutlineViewDataSource/Delegate approach instead? Are these binary "compatible" with Cocoa with their Cocoa counterparts?