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TreeSliver & TreeView support for lazy tree nodes #148358
In the 1D and 2D tree PRs, the entire tree is expected to be provided by the user. Some folks may like to provide nodes lazily, just like the trees allow users to provide widgets for the trees lazily.
This issue is tracking that additional feature request.
Any updates? I got an issue when I tried to update one node from childless to have children and expand it. Then, it complained: 'package:two_dimensional_scrollables/src/tree_view/tree.dart': Failed assertion: line 880 pos 12: '_activeNodes.contains(node)': is not true.
Activity
lvyandev commentedon Jun 25, 2025
Any updates? I got an issue when I tried to update one node from childless to have children and expand it. Then, it complained:
'package:two_dimensional_scrollables/src/tree_view/tree.dart': Failed assertion: line 880 pos 12: '_activeNodes.contains(node)': is not true.