TreeIndentation class

Widget responsible for indenting tree nodes and painting lines (if enabled).

Check out the factory constructors of IndentGuide to discover the available indent guide decorations.

Example:

final TreeEntry entry;

@override
Widget build(BuildContext context) {
  return TreeIndentation(
    entry: entry,
    guide: IndentGuide.connectingLines(
      indent: 40,
      color: Colors.grey,
      thickness: 1.0,
      origin: 0.5,
      roundCorners: true,
    ),
    child: ...
  );
}

If guide is not provided, DefaultIndentGuide.of will be used instead.

Inheritance

• Object
• DiagnosticableTree
• Widget
• StatelessWidget
• TreeIndentation

Constructors

TreeIndentation.new({Key? key, required Widget child, required TreeEntry<Object> entry, IndentGuide? guide})

Creates a TreeIndentation.

const

Properties

child → Widget

The widget that is going to be displayed to the side of the indentation.

final

entry → TreeEntry<Object>

The TreeEntry that will provide the relevant details (i.e., level, line offsets, etc.) when indenting and/or painting indent guides.

final

guide → IndentGuide?

The configuration used to indent and paint lines (if enabled).

final

hashCode → int

The hash code for this object.

no setter, inherited

key → Key?

Controls how one widget replaces another widget in the tree.

final, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

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

Operators

operator ==(Object other) → bool

The equality operator.

inherited