Observer<T> class

Observer

Used as base Widget of this library. When you want to watch changes on an object, add this widget in your flutter tree.

Inheritance

• Object
• DiagnosticableTree
• Widget
• StatefulWidget
• StatefulComponent
• Observer

Constructors

Observer({required Of<T> of, @Deprecated("Replaced by 'builder'") _OfBuilder<T>? child, _OfBuilder<T>? builder, List<Of> slaves = const []})

Definition

Properties

child ↔ _OfBuilder<T>

The object builder.

late, final, inherited

hashCode → int

The hash code for this object.

no setter, inherited

key → Key?

Controls how one widget replaces another widget in the tree.

final, inherited

of ↔ Of<T>

The object Master observable.

late, final, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

slaveObservables ↔ List<Of>

The object additional slave observables.

late, final, inherited

Methods

createElement() → StatefulElement

Creates a StatefulElement to manage this widget's location in the tree.

inherited

createState() → _OfWidgetManager<T>

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

Static Methods

on<E>({dynamic tag = #base, required _OfBuilderWithState<E> builder}) → _OfWidgetBuilder<E>

Definition

withProviders({required List<Of> providers, required _OfBuilder child}) → Widget

Definition