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
-
- Object
- ChangeNotifier
- ComponentsNotifier
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