NavigationControlData class

Data class containing navigation control configuration and state.

Manages layout, styling, and interaction settings for navigation containers and their children. Used internally to coordinate behavior across navigation items.

Constructors

NavigationControlData({required NavigationContainerType containerType, required NavigationLabelType parentLabelType, required NavigationLabelPosition parentLabelPosition, required NavigationLabelSize parentLabelSize, required EdgeInsets parentPadding, required Axis direction, required int? selectedIndex, required ValueChanged<int> onSelected, required bool expanded, required int childCount, required double spacing, required bool keepCrossAxisSize, required bool keepMainAxisSize})

Creates navigation control data.

Properties

childCount → int

Total number of child items.

final

containerType → NavigationContainerType

Type of navigation container (bar, rail, etc.).

final

direction → Axis

Layout direction (horizontal or vertical).

final

expanded → bool

Whether the navigation is expanded to fill available space.

final

hashCode → int

The hash code for this object.

no setter, override

keepCrossAxisSize → bool

Whether to maintain cross-axis size constraints.

final

keepMainAxisSize → bool

Whether to maintain main-axis size constraints.

final

labelDirection → Axis

Computed label direction based on parent label position.

no setter

onSelected → ValueChanged<int>

Callback when an item is selected.

final

parentLabelPosition → NavigationLabelPosition

Label position relative to icon from parent.

final

parentLabelSize → NavigationLabelSize

Label size variant from parent.

final

parentLabelType → NavigationLabelType

Label display type from parent container.

final

parentPadding → EdgeInsets

Padding applied by parent container.

final

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

selectedIndex → int?

Currently selected item index (null if none selected).

final

spacing → double

Spacing between navigation items.

final

Methods

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

override