LazyLoadIndexedStack class

An extended IndexedStack that builds the required widget only when it is needed, and returns the pre-built widget when it is needed again.

Inheritance

Constructors

LazyLoadIndexedStack({Key? key, Widget? unloadWidget, List<int> preloadIndexes = const [], AlignmentGeometry alignment = AlignmentDirectional.topStart, StackFit sizing = StackFit.loose, TextDirection? textDirection, required int index, required List<Widget> children})
Creates LazyLoadIndexedStack that wraps IndexedStack.

Properties

alignment → AlignmentGeometry
Same as alignment attribute of original IndexedStack.
final
children → List<Widget>
The widgets below this widget in the tree.
final
hashCode → int
The hash code for this object.
no setterinherited
index → int
The index of the child to show.
final
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
preloadIndexes → List<int>
The indexes of children that should be preloaded.
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
sizing → StackFit
Same as sizing attribute of original IndexedStack.
final
textDirection → TextDirection?
Same as textDirection attribute of original IndexedStack.
final
unloadWidget ↔ Widget
Widget to be built when not loaded. Default widget is Container.
latefinal

Methods

createElement() → StatefulElement
Creates a StatefulElement to manage this widget's location in the tree.
inherited
createState() → LazyLoadIndexedStackState
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}) → 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