HeaderVisibilityState class

Stato dedicato alla visibilità dell'header dell'app.

Estende ValueNotifier di bool per esporre la visibilità corrente. Pensato per sostituire NavigationState.headerTitleVisible a partire dalla versione 5.0 del pacchetto genai_components.

Uso tipico:

final headerVisibility = HeaderVisibilityState();
headerVisibility.hide();
headerVisibility.show();
headerVisibility.toggle();
Inheritance

Constructors

HeaderVisibilityState({bool initial = true})
Crea lo stato con un valore initial di default a true.

Properties

hashCode → int
The hash code for this object.
no setterinherited
hasListeners → bool
Whether any listeners are currently registered.
no setterinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
value ↔ bool
The current value stored in this notifier.
getter/setter pairinherited

Methods

addListener(VoidCallback listener) → void
Register a closure to be called when the object changes.
inherited
dispose() → void
Discards any resources used by the object.
inherited
hide() → void
Imposta la visibilità a false.
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
notifyListeners() → void
Call all the registered listeners.
inherited
removeListener(VoidCallback listener) → void
Remove a previously registered closure from the list of closures that are notified when the object changes.
inherited
show() → void
Imposta la visibilità a true.
toggle() → void
Inverte il valore corrente della visibilità.
toString() → String
A string representation of this object.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited