HeadlessApp class

Universal bootstrap for Headless.

This is the minimal, preset-agnostic wrapper that installs:

Use this when you want DRY setup without tying to Material/Cupertino.

Preset-specific helpers (HeadlessMaterialApp, HeadlessCupertinoApp) can be implemented on top of this shell.

Inheritance

Constructors

HeadlessApp({Key? key, required HeadlessTheme theme, required Widget appBuilder(TransitionBuilder overlayBuilder), OverlayController? overlayController, HeadlessFocusHighlightController? focusHighlightController, HeadlessFocusHighlightPolicy focusHighlightPolicy = const HeadlessFlutterFocusHighlightPolicy(), bool enableAutoRepositionTicker = false})
const

Properties

appBuilder → Widget Function(TransitionBuilder overlayBuilder)
Builds the app widget (Material/Cupertino/etc) and installs AnchoredOverlayEngineHost in the correct place (typically via MaterialApp.builder / CupertinoApp.builder).
final
enableAutoRepositionTicker → bool
When enabled, AnchoredOverlayEngineHost will request reposition every frame while overlays are active.
final
focusHighlightController → HeadlessFocusHighlightController?
Optional external focus highlight controller.
final
focusHighlightPolicy → HeadlessFocusHighlightPolicy
Policy used when focusHighlightController is not provided.
final
hashCode → int
The hash code for this object.
no setterinherited
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
overlayController → OverlayController?
Optional external overlay controller.
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
theme → HeadlessTheme
Headless capability provider (required).
final

Methods

createElement() → StatefulElement
Creates a StatefulElement to manage this widget's location in the tree.
inherited
createState() → State<HeadlessApp>
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