Tree class - tree library

Constructors

Tree({Key? key, List<TreeNode<T>>? roots, TreeController<T>? controller, Set<TreeNodeId>? initiallyExpanded, bool showToolbar = true, bool showSearch = true, bool showCheckboxes = false, bool showFooter = true, bool showGuides = true, bool dense = false, bool editable = true, TreeIconBuilder<T>? iconBuilder, TreeWidgetBuilder<T>? trailingBuilder, TreeWidgetBuilder<T>? labelBuilder, TreeActionsBuilder<T>? contextActions, ValueChanged<TreeNode<T>>? onSelected, ValueChanged<TreeNode<T>>? onActivated, ValueChanged<Set<TreeNodeId>>? onCheckedChanged, ValueChanged<List<TreeNode<T>>>? onChanged, Widget? emptyState}): const

contextActions → TreeActionsBuilder<T>?: final
controller → TreeController<T>?: Drive/observe from outside. When null the widget owns a private one.
final
dense → bool: Compact row height.
final
editable → bool: Allow inline rename (double-click / F2 / Enter) and structural edits via the context menu. When false the tree is read-only for navigation.
final
emptyState → Widget?: Placeholder when the (filtered) tree is empty.
final
hashCode → int: The hash code for this object.
no setterinherited
iconBuilder → TreeIconBuilder<T>?: final
initiallyExpanded → Set<TreeNodeId>?: Ids expanded on first build (ignored when a controller is supplied).
final
key → Key?: Controls how one widget replaces another widget in the tree.
finalinherited
labelBuilder → TreeWidgetBuilder<T>?: final
onActivated → ValueChanged<TreeNode<T>>?: final
onChanged → ValueChanged<List<TreeNode<T>>>?: final
onCheckedChanged → ValueChanged<Set<TreeNodeId>>?: final
onSelected → ValueChanged<TreeNode<T>>?: final
roots → List<TreeNode<T>>?: Initial forest. Required when controller is null.
final
runtimeType → Type: A representation of the runtime type of the object.
no setterinherited
showCheckboxes → bool: final
showFooter → bool: final
showGuides → bool: final
showSearch → bool: final
showToolbar → bool: final
trailingBuilder → TreeWidgetBuilder<T>?: final

createElement() → StatefulElement: Creates a StatefulElement to manage this widget's location in the tree.
inherited
createState() → State<Tree<T>>: Creates the mutable state for this widget at a given location in the tree.
override
debugDescribeChildren() → List<DiagnosticsNode>: Returns a list of DiagnosticsNode objects describing this node's children.
inherited
debugFillProperties(DiagnosticPropertiesBuilder properties) → void: Add additional properties associated with the node.
inherited
noSuchMethod(Invocation invocation) → dynamic: Invoked when a nonexistent method or property is accessed.
inherited
toDiagnosticsNode({String? name, DiagnosticsTreeStyle? style}) → DiagnosticsNode: Returns a debug representation of the object that is used by debugging tools and by DiagnosticsNode.toStringDeep.
inherited
toString({DiagnosticLevel minLevel = DiagnosticLevel.info}) → String: A string representation of this object.
inherited
toStringDeep({String prefixLineOne = '', String? prefixOtherLines, DiagnosticLevel minLevel = DiagnosticLevel.debug, int wrapWidth = 65}) → String: Returns a string representation of this node and its descendants.
inherited
toStringShallow({String joiner = ', ', DiagnosticLevel minLevel = DiagnosticLevel.debug}) → String: Returns a one-line detailed description of the object.
inherited
toStringShort() → String: A short, textual description of this widget.
inherited