TreeView class

A hierarchical tree view widget.

Renders a tree structure using Unicode box-drawing characters for connectors.

TreeView(
  nodes: [
    TreeViewNode(label: 'src', icon: '📁', children: [
      TreeViewNode(label: 'main.dart', icon: '📄'),
      TreeViewNode(label: 'utils.dart', icon: '📄'),
    ]),
  ],
)
Inheritance

Constructors

TreeView({required List<TreeViewNode> nodes, Style? labelStyle, Style? connectorStyle, int indentSize = 2, Key? key})

Properties

children → List<Widget>
Child widgets that receive forwarded messages.
no setterinherited
connectorStyle → Style?
Style for connector lines (├, │, └, ─).
final
debugRenderObjectPassthrough → bool
Whether this widget is intentionally transparent to render-object layouts.
no setterinherited
focusable → bool
Whether this widget can receive keyboard focus.
no setterinherited
hashCode → int
The hash code for this object.
no setterinherited
id → String
Unique identifier for this widget.
no setterinherited
indentSize → int
Number of characters per indent level (minimum 2).
final
key → Key?
Key for preserving widget identity.
finalinherited
labelStyle → Style?
Default style for node labels.
final
nodes → List<TreeViewNode>
Root-level nodes to display.
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
theme → Theme
Access the current theme.
no setterinherited

Methods

build(BuildContext context) → Widget
Describes the part of the UI represented by this widget.
override
buildCachedView<T>(T builder(), Object? cacheKey) → T
Returns a cached view if the cache key matches.
inherited
handleInit() → Cmd?
Override this instead of init for widget-specific initialization.
inherited
handleIntercept(Msg msg) → (Widget, Cmd?)
Override this to handle messages before they reach children.
inherited
handleUpdate(Msg msg) → (Widget, Cmd?)
Override this to handle messages specific to this widget.
inherited
init() → Cmd?
Called once when the widget is first mounted.
inherited
invalidateCachedView() → void
Clears any cached view for this widget.
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
toString() → String
A string representation of this object.
inherited
update(Msg msg) → (Model, Cmd?)
Handles messages by forwarding to children then calling handleUpdate.
inherited
view() → Object
Renders the widget to a string or View.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited