expandItemKey method

void expandItemKey(
  1. K key
)

Implementation

void expandItemKey(K key) {
  if (expansionMode == TExpansionMode.none) return;

  final newExpandedKeys = expansionMode == TExpansionMode.single ? copyKeySet([key]) : copyKeySet(expandedKeys)
    ..add(key);

  updateExpansionState(newExpandedKeys);
}