SurgeObserver class abstract

Abstract observer class for monitoring Surge lifecycle events.

SurgeObserver provides a way to observe and react to Surge lifecycle events, including creation, state changes, and disposal. This is useful for debugging, logging, or implementing cross-cutting concerns.

To use an observer, create a subclass and override the methods you're interested in, then set it as the global observer:

Example:

class MyObserver extends SurgeObserver {
  @override
  void onCreate(Surge surge) {
    print('Surge created: $surge');
  }

  @override
  void onChange(Surge surge, Change change) {
    print('State changed: ${change.currentState} -> ${change.nextState}');
  }

  @override
  void onDispose(Surge surge) {
    print('Surge disposed: $surge');
  }
}

SurgeObserver.observer = MyObserver();

Constructors

SurgeObserver()

Creates a new observer instance.

const

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

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

onChange(Surge surge, Change change) → void

Called when a Surge's state changes.

onCreate(Surge surge) → void

Called when a Surge is created.

onDispose(Surge surge) → void

Called when a Surge is disposed.

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited

Static Properties

observer ↔ SurgeObserver?

The global observer instance for all Surge lifecycle events.

getter/setter pair