MessageListener class Null safety

A listener for StateNotifierProvider or ChangeNotifierProvider that looks for error or information message to be displayed

Inheritance

Constructors

MessageListener({Key? key, required Widget child, String? errorExtractor(dynamic)?, String? infoExtractor(dynamic)?, required ProviderBase provider, required void showError(String error), required void showInfo(String error)})
factory

Properties

changeNotifierAutoDisposeProvider AutoDisposeChangeNotifierProvider<ChangeNotifier?>?
final
changeNotifierProvider ChangeNotifierProvider<ChangeNotifier?>?
final
child Widget
Child widget
final
errorExtractor → (String? Function?(dynamic)?)
Function that tells MessageListener how to look for an error message If not specified it will look for a variable "error"
final
hashCode int
The hash code for this object.
@nonVirtual, read-only, inherited
infoExtractor → (String? Function?(dynamic)?)
Function that tells MessageListener how to look for an information message If not specified it will look for a variable "info"
final
key Key?
Controls how one widget replaces another widget in the tree.
final, inherited
runtimeType Type
A representation of the runtime type of the object.
read-only, inherited
showError → void Function(String error)
Function that will be called when an error message occur
final
showInfo → void Function(String info)
Function that will be called when an info message occur
final
stateNotifierAutoDisposeProvider AutoDisposeStateNotifierProvider<StateNotifier, dynamic>?
final
stateNotifierProvider StateNotifierProvider<StateNotifier, dynamic>?
final

Methods

build(BuildContext context, WidgetRef ref) Widget
Describes the part of the user interface represented by this widget.
override
createElement() ConsumerStatefulElement
Creates a StatefulElement to manage this widget's location in the tree.
inherited
createState() → _ConsumerState
Creates the mutable state for this widget at a given location in the tree.
inherited
debugDescribeChildren() List<DiagnosticsNode>
Returns a list of DiagnosticsNode objects describing this node's children.
@protected, inherited
debugFillProperties(DiagnosticPropertiesBuilder properties) → void
Add additional properties associated with the node.
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent 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.
@nonVirtual, inherited