SliverTree<T extends Object> class

A sliver that displays a tree structure.

This widget creates a flat representation of the tree and renders it using SliverList for efficient lazy loading.

Example:

CustomScrollView(
  slivers: [
    SliverTree<Node>(
      controller: treeController,
      nodeBuilder: (context, entry) {
        return ListTile(title: Text(entry.node.title));
      },
    ),
  ],
)

Inheritance

• Object
• DiagnosticableTree
• Widget
• StatefulWidget
• SliverTree

Implementers

• SliverAnimatedTree

Constructors

SliverTree({Key? key, required TreeController<T> controller, required TreeNodeBuilder<T> nodeBuilder, bool enableCheckbox = false, bool enableSelectAll = false, String labelSelectAll = 'Select All', String labelClearAll = 'Clear All', String labelSelected = 'Selected'})

const

Properties

controller → TreeController<T>

The controller managing the tree state.

final

enableCheckbox → bool

Whether to enable checkbox selection.

final

enableSelectAll → bool

Whether to enable Select All/Unselect All button. Only works when enableCheckbox is true.

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

labelClearAll → String

final

labelSelectAll → String

final

labelSelected → String

final

nodeBuilder → TreeNodeBuilder<T>

Builder for creating widgets from tree entries.

final

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

createElement() → StatefulElement

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

inherited

createState() → State<SliverTree<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

Operators

operator ==(Object other) → bool

The equality operator.

inherited