TLazyIndexedStack class

A lazy-loading indexed stack that builds children on demand.

TLazyIndexedStack provides memory-efficient tab/page switching with:

  • Lazy child building (only builds when first shown)
  • Preserves state of built children
  • Memory efficient for many tabs

Usage Example

TLazyIndexedStack(
  index: currentIndex,
  children: [
    (context) => HomePage(),
    (context) => ProfilePage(),
    (context) => SettingsPage(),
  ],
)

See also:

Inheritance

Constructors

TLazyIndexedStack({required int index, required List<WidgetBuilder> children, Key? key})
Creates a lazy indexed stack.
const

Properties

children → List<WidgetBuilder>
Builder functions for each child (built lazily).
final
hashCode → int
The hash code for this object.
no setterinherited
index → int
The index of the child to display.
final
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited

Methods

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