Keep UITableView ContentOffset to prepend list items

[shimastripe]

Checklist

• [x] Reviewed the README and documents.
• [x] Searched existing issues for ensure not duplicated.

Expected Behavior

I want to make a timeline like Twitter using Carbon and UITableView.

• When I continue to load the latest items and append the Component Items in List, UITableView contentOffset works properly. (= keep the current position)
• When I pull to refresh and prepend Component items in List, UITableView contentOffset moves to top position in List.

Current Behavior

Add to append items.

list = [Component3, Component4, Component5]
appendItems = [Component6, Component7]

I scroll to the latest item Component5.

newList = [Component3, Component4, Component5, Component6, Component7]

and UITableView's contentOffset indicates Component5. Keep current position.

Add to prepend items.

list = [Component3, Component4, Component5]
appendItems = [Component1, Component2]

I pull to refresh.

newList = [Component1, Component2, Component3, Component4, Component5]

and UITableView's contentOffset indicates Component1. Not Component3

Detailed Description (Include Screenshots)

• I want to resolve latter case. (add to prepend items)
  • UITableView's contentOffset should indicate Component3.
• Do you have any solutions? Thank you.

Environment

• Carbon version: 1.0.0 Release Candidate 6

• Swift version: Apple Swift version 5.2 (swiftlang-1103.0.32.1 clang-1103.0.32.29)

• iOS version: 13.4.1

• Xcode version: 11.4.1

• Devices/Simulators: iPhone11Pro 13.4.1

• using SPM

[ra1028]

@shimastripe Sorry for my late reply. Carbon provides powerful features but is actually a thin wrapper for UITable/CollectionView. So there are no plans for Carbon to support any of the features you have suggested for now. However, you are not limit any solution by Carbon, and I recommend that you implement it according to the existing solution. Unfortunately, I couldn't be helpful.

[shimastripe]

@ra1028

I recommend that you implement it according to the existing solution.

OK, I understand and try it. Thank you for the reply!