ComponentsNotifier<T extends Component> class

A ChangeNotifier that notifies its listeners when a Component is added or removed, or updated. The meaning of an updated component will vary depending on the component implementation, this is something defined and executed by the component itself.

For example, in a Player component, that holds a health variable you may want to notify changes when that variable has changed.

Inheritance

Constructors

ComponentsNotifier(List<T> initial)

Properties

components List<T>
The list of components.
no setter
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
single → T?
Returns a single element of the components on the game.
no setter

Methods

add(T component) → void
addListener(VoidCallback listener) → void
Register a closure to be called when the object changes.
inherited
applicable(Component component) bool
dispose() → void
Discards any resources used by the object. After this is called, the object is not in a usable state and should be discarded (calls to addListener will throw after the object is disposed).
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
notify() → void
notifyListeners() → void
Call all the registered listeners.
inherited
remove(T component) → void
removeListener(VoidCallback listener) → void
Remove a previously registered closure from the list of closures that are notified when the object changes.
inherited
toString() String
A string representation of this object.
inherited

Operators

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