=> code from CL 17423372 was disabling it explicitely, but I couldn't find any reason or have any repro. The comment talk about disabling between an item and its child, while with a EItemDropZone::BelowItem, it correspond to the bottom part of an item, and not the bottom item, so having the child item expanded or not won't change the drag n drop behavior.
- Fixed drag n drop issue for Input Mapping Context, where drag n dropping could give deterministic but incorrect result when more than 1 mapping exists for a group.
=> the reordering algorithm used requires that the content of the array is ordered by group, while it was not necessarily the case. Starting from this CL, it will (slower but safer algorithm).
- Prevent the drag n drop for Input Mapping Context between rows that are not part of the same parent node.
Tests:
-opened various Input Mapping Context from QA Game, like /Maps/Framework/EnhancedInput/EI_HelperAssets/Controls_3rdPerson/IMC_3rdPerson_Controls.uasset, that was failing 100% on some actions. Drag n dropped groups (collapsed or expanded), even on the last one, and on individual entries with 100% success. Did a lot of drag n drop test (between close elements, first and last, last and first, first and middle,...)
-tried to drag n drop across entries from different parent => it was blocked as expected.
-undo/redo after those operations.
-used drag n drop in other contexts (media play list, data table), no regression noticed when drag n dropping elements.
#jira UE-157906
#rb nate.strohmyer, karen.jirak
#preflight 644fd08e1c2846595c454ffa
[CL 25284259 by yohann dossantos in ue5-main branch]
8cb2e71dea