PrioritizedCallback<T extends Function> class

Callback with priority for ordered execution.

Higher priority callbacks execute first (e.g., priority 100 runs before priority 0). Callbacks with the same priority execute in parallel via Future.wait. Different priorities execute sequentially (all callbacks at priority N complete before priority N-1 starts).

Default Priorities

Service	Callback	Priority	Rationale
DeviceService	onAuthenticated	0	Default
DeviceService	onAboutToLogOut	0	Default
NotificationService	onAuthenticated	0	Default, runs parallel with DeviceService
NotificationService	onAboutToLogOut	0	Default, defers to DeviceService when present

Custom Priorities

• Positive priorities (e.g., 100) to run before default services
• Negative priorities (e.g., -100) to run after default services

Example

final auth = AuthServiceImpl(
  firebaseApp: app,
  onAuthenticatedCallbacks: [
    PrioritizedCallback(deviceService.handleAuthenticated, priority: 0),
    PrioritizedCallback(notificationService.handleAuthenticated, priority: 0),
    PrioritizedCallback(analyticsService.onLogin, priority: -10), // After core services
  ],
);

Constructors

PrioritizedCallback(T callback, {int priority = 0})

Creates a prioritized callback.

const

Properties

callback → T

The callback function to execute.

final

hashCode → int

The hash code for this object.

no setter, inherited

priority → int

The execution priority. Higher values execute first.

final

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited