sliver_tree/synced_sliver_tree library

A declarative sliver tree with data-first input modes.

SyncedSliverTree owns both a TreeController and a TreeSyncController internally. Callers provide domain data through one of five input shapes:

• SyncedSliverTree.new for an immutable nested SyncedTreeNode tree
• SyncedSliverTree.nodes for existing TreeNode roots plus childrenOf
• SyncedSliverTree.hierarchy for nested objects
• SyncedSliverTree.flat for flat items with parent keys
• SyncedSliverTree.snapshot for precomputed tree structure

The widget diffs the normalized tree on rebuild and applies animated insertions, removals, and reparenting.

Classes

SyncedSliverTree<TKey, TItem>

A sliver widget that declaratively displays a tree and animates changes.

TreeItemView<TKey, TItem>

Rich view of a visible synced tree node passed to itemBuilder.

TreeSnapshot<TKey, TItem>

Immutable normalized tree structure consumed by SyncedSliverTree.

Extensions

TreeItemViewWatch on TreeItemView<TKey, TItem>

Typedefs

TreeItemBuilder<TKey, TItem> = Widget Function(BuildContext context, TreeItemView<TKey, TItem> node)

Builds a widget for a visible synced tree node.