TreeViewItem class - fluent_ui library

Constructors

TreeViewItem({Key? key, Widget? leading, required Widget content, dynamic value, List<TreeViewItem> children = const [], bool collapsable = true, bool? expanded, bool? selected = false, TreeViewItemInvoked? onInvoked, TreeViewItemOnExpandToggle? onExpandToggle, Map<Type, GestureRecognizerFactory<GestureRecognizer>> gestures = const {}, ButtonState<Color>? backgroundColor, bool autofocus = false, FocusNode? focusNode, String? semanticLabel, Widget? loadingWidget, bool lazy = false}): Creates a tree view item.
TreeViewItem.from(TreeViewItem source): Deep copy constructor that can be used to copy an item and all of its child items. Useful if you want to have multiple trees with the same items, but with different UX states (e.g., selection, visibility, etc.).
factory

Properties

autofocus → bool: True if this widget will be selected as the initial focus when no other node in its scope is currently focused.
final
backgroundColor → ButtonState<Color>?: The background color of this item.
final
children → List<TreeViewItem>: The children of this item.
final
collapsable → bool: Whether the item can be collapsable by user-input or not.
final
content → Widget: The item content
final
depth → int: Indicates how far from the root node this child node is.
no setter
expanded ↔ bool: Whether the current item is expanded.
getter/setter pair
focusNode → FocusNode: An optional focus node to use as the focus node for this widget.
final
gestures → Map<Type, GestureRecognizerFactory<GestureRecognizer>>: The gestures that this item will respond to.
final
hashCode → int: The hash code for this object.
no setteroverride
isExpandable → bool: Whether this node is expandable
no setter
key → Key?: final
lastParent → TreeViewItem: Gets the last parent in the tree, in decrescent order.
no setter
lazy → bool: Whether this item children is loaded lazily
final
leading → Widget?: The item leading
final
loading ↔ bool: Whether the tree view item is loading
getter/setter pair
loadingWidget → Widget?: Widget to show when loading
final
onExpandToggle → TreeViewItemOnExpandToggle?: Called when this item's expansion state is toggled.
final
onInvoked → TreeViewItemInvoked?: Called when this item is invoked
final
parent → TreeViewItem?: TreeViewItem that owns the children collection that this node is part of.
no setter
runtimeType → Type: A representation of the runtime type of the object.
no setterinherited
selected ↔ bool?: Whether the current item is selected.
getter/setter pair
semanticLabel → String?: Semantic label for the input.
final
value → dynamic: An optional/arbitrary value associated with the item.
final

Methods

debugFillProperties(DiagnosticPropertiesBuilder properties) → void: Add additional properties associated with the node.
override
executeForAllParents(ValueChanged<TreeViewItem?> callback) → void: Executes callback for every parent found in the tree
noSuchMethod(Invocation invocation) → dynamic: Invoked when a nonexistent method or property is accessed.
inherited
setSelectionStateForMultiSelectionMode(bool newSelectionState, bool deselectParentWhenChildrenDeselected) → void: Changes the selection state for this item and all of its children to either all selected or all deselected. Also appropriately updates the selection state of this item's parents as required. This should not be used for an item that belongs to a TreeView in single selection mode. See also TreeView.deselectParentWhenChildrenDeselected.
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
toStringShort() → String: A brief description of this object, usually just the runtimeType and the hashCode.
inherited
updateSelected(bool deselectParentWhenChildrenDeselected) → void: Updates selected based on the direct childrens' state. selected will not be forced to false if deselectParentWhenChildrenDeselected is false and either there are no children or all children are deselected.

Operators

operator ==(Object other) → bool: The equality operator.
override