ObservableModel class

A Gadget used to store the global state of the application.

For each value provided to the ObservableModel, a relative GadgetSubject is created and stored in the internal _subjectMap. This system represents the fundamental building block of the reactive state management mechanism behind Flutter Gadgets. By using GadgetSubjects, SubscriberGadgets can watch the generated streams and dynamically rebuild whenever a new value is added or removed to one stream.

An ObservableModel instance is automatically created and encapsulated in a Service by AppGadget during initialization.

Constructors

ObservableModel()

Properties

hashCode → int

The hash code for this object.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

closeAllSubjects() → void

Closes all the subjects stored in the map.

dispose() → void

Closes all the subjects and clears the _subjectMap.

getSubject<T>({String? token}) → GadgetSubject<T?>

Retrieves a specific GadgetSubject from the map.

getValue<T>({String? token}) → T?

Retrieves the current value available in the relative GadgetSubject stored in the map. The map key is automatically generated using the toValueKey function.

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

notifyFor<T>({String? token}) → void

Notifies the change of the internal state of a value stored in a GadgetSubject.

putValue<T>({required T? value, String? token}) → void

Puts a value in the specified GadgetSubject stored in the map.

removeValue<T>({bool closeSubject = false, String? token}) → void

Puts a null value in the specified GadgetSubject stored in the map.

safelyRemoveValue<T>({bool closeSubject = false, String? token}) → void

Acts like removeValue, but doesn't throw an exception if the specified GadgetSubject is null.

toString() → String

A string representation of this object.

override

updateValue<T>({required Update<T> updateFunction, T? updateIfNull, String? token}) → T

Updates the internal state of a value using a given Update function.

Operators

operator ==(Object other) → bool

The equality operator.

inherited