NodeWidget<T> class

A widget that builds the visual content of a node.

This widget is responsible for rendering the node's visual appearance:

Important: This widget does NOT handle:

The widget supports three rendering modes:

Self-rendering: When Node.buildWidget returns non-null, it's used directly (no styling applied - the node controls its own appearance)
Custom content: Provide a child widget for complete control over node appearance
Default style: Use NodeWidget.defaultStyle for standard node rendering

Example with custom content:

NodeWidget<MyData>(
  node: myNode,
  theme: nodeTheme,
  child: MyCustomNodeContent(data: myNode.data),
  backgroundColor: Colors.blue.shade50,
)

Constructors

NodeWidget({Key? key, required Node<T> node, required NodeTheme theme, Widget? child, NodeShape? shape, Color? backgroundColor, Color? selectedBackgroundColor, Color? borderColor, Color? selectedBorderColor, double? borderWidth, double? selectedBorderWidth, BorderRadius? borderRadius, EdgeInsets? padding, bool showContent = true}): Creates a node widget with optional custom content.
const
NodeWidget.defaultStyle({Key? key, required Node<T> node, required NodeTheme theme, NodeShape? shape, Color? backgroundColor, Color? selectedBackgroundColor, Color? borderColor, Color? selectedBorderColor, double? borderWidth, double? selectedBorderWidth, BorderRadius? borderRadius, EdgeInsets? padding, bool showContent = true}): Creates a node widget with default content layout.
const

backgroundColor → Color?: Custom background color.
final
borderColor → Color?: Custom border color.
final
borderRadius → BorderRadius?: Custom border radius.
final
borderWidth → double?: Custom border width.
final
child → Widget?: Optional custom widget to display as node content.
final
hashCode → int: The hash code for this object.
no setterinherited
key → Key?: Controls how one widget replaces another widget in the tree.
finalinherited
node → Node<T>: The node data model to render.
final
padding → EdgeInsets?: Custom padding inside the node.
final
runtimeType → Type: A representation of the runtime type of the object.
no setterinherited
selectedBackgroundColor → Color?: Custom background color for selected state.
final
selectedBorderColor → Color?: Custom border color for selected state.
final
selectedBorderWidth → double?: Custom border width for selected state.
final
shape → NodeShape?: Optional shape for the node.
final
showContent → bool: Whether to show node content.
final
theme → NodeTheme: The theme for styling the node.
final

build(BuildContext context) → Widget: Describes the part of the user interface represented by this widget.
override
createElement() → StatelessElement: Creates a StatelessElement to manage this widget's location in the tree.
inherited
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