Missing addItemAt in TreeGrid (TreeData)

[sirbris]

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Reordering items in a TreeGrid is a real pain at the moment in 8.1.0. There's the method moveAfterSibling but it only works with items having the same parent. Also just "after" sibling so if you want to move an item to first place it gets hacky. A method like addItemAt(index, parent, item) would really help to reorder the hierarchical data (e.g. by drag and drop) Also the option to keep the children when moving a parent node would be really helpful.

[stale[bot]]

Hello there!

It looks like this issue hasn't progressed lately. There are so many issues that we just can't deal them all within a reasonable timeframe.

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[Legioth]

Would GridRowDragger that was introduced in 8.2 also help in this case? (ping @tsuoanttila)

[echarlus]

Hello, any news on this topic ? I'm currently experimenting with GridRowWrapper but my DropIndexCalculator is always called with an empty target ...