Tree class

Tree

Tree(
  title: Builder(
    builder: (context) => Text(
      'Tree',
      style: Theme.of(context).textTheme.body2,
    ),
  ),
  nodes: [
    TreeNode(
      'Node0',
      builder: (context) => Text('Node0'),
    ),
    TreeNode('Node1', children: [
      TreeNode(
        'Node0',
        builder: (context) => Text('Node0'),
      ),
      TreeNode(
        'Node1',
        builder: (context) => Text('Node1'),
      ),
      TreeNode(
        'Node2',
        builder: (context) => Text('Node2'),
      ),
      TreeNode('Node3', children: [
        TreeNode(
          'Node0',
          builder: (context) => Text('Node0'),
        ),
        TreeNode(
          'Node1',
          builder: (context) => Text('Node1'),
        ),
      ]),
    ]),
    TreeNode(
      'Node2',
      builder: (context) => Text('Node2'),
    ),
    TreeNode('Node3', children: [
      TreeNode(
        'Node0',
        builder: (context) => Text('Node0'),
      ),
      TreeNode(
        'Node1',
        builder: (context) => Text('Node1'),
      ),
    ]),
  ],
)```

Inheritance

• Object
• DiagnosticableTree
• Widget
• StatefulWidget
• Tree

Constructors

Tree({Widget? title, required List<TreeNode> nodes, EdgeInsets? pagePadding, bool isScrollbarAlwaysShown = true, bool collapsed = false, bool showDraggingIndicator = true, bool allowDragging = false, TreeController? controller, Key? key})

const

Properties

allowDragging → bool

If the tree can be resized.

final

collapsed → bool

If the tree is collapsed.

final

controller → TreeController?

Controls selected index.

final

hashCode → int

The hash code for this object.

no setter, inherited

isScrollbarAlwaysShown → bool

final

key → Key?

Controls how one widget replaces another widget in the tree.

final, inherited

nodes → List<TreeNode>

Nodes used to create the tree.

final

pagePadding → EdgeInsets?

Padding for the the page used in a node.

final

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

showDraggingIndicator → bool

If an indicator is shown when the tree is collapsed.

final

title → Widget?

The title above the tree.

final

Methods

createElement() → StatefulElement

Creates a StatefulElement to manage this widget's location in the tree.

inherited

createState() → State<Tree>

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}) → 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