class Null safety

The base class for data provided to the SmoothCategoryPicker.

Subclasses should override the getLabel accessor to give a human-readable version of this category for display in the UI.

Constructors

hasChildren → Future<bool>: Whether or not this node has children.
read-only
hashCode → int: The hash code for this object. [...]
read-only, inherited
runtimeType → Type: A representation of the runtime type of the object.
read-only, inherited
value → T: The value of this node.
final

addChild(covariant SmoothCategory<T> newChild) → void
containsChildWithValue(T childValue) → Future<bool>: Returns true if this node has a child with the given value.
findInDescendants(T value) → Future<SmoothCategory<T>?>
getChild(T childValue) → Future<SmoothCategory<T>?>: Returns the child node with the value given.
getChildren() → Stream<SmoothCategory<T>>: Gets the list of children of this node.
getDescendants() → Stream<SmoothCategory<T>>: This returns a depth-first iterable over the descendants of this node.
getLabel(dynamic language) → String: Returns a human-readable label that will be displayed in the UI
getParents() → Stream<SmoothCategory<T>>: Returns an iterable of the parents of this node.
noSuchMethod(Invocation invocation) → dynamic: Invoked when a non-existent method or property is accessed. [...]
inherited
toString() → String: A string representation of this object. [...]
override