Observer<T extends Subject> class
The Observer class can subscribe to one or more Subject instances. It
uses its argument handler Function in its receive(subject) method in
order to handle any notifications.
Constructors
-
Observer({required ObserverHandler<
T> handler}) - Construct an Observer with a handler for any notifying Subject.
Properties
-
handler
↔ ObserverHandler<
T> -
Handles Subject notifications.
getter/setter pair
- hashCode → int
-
The hash code for this object.
no setterinherited
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
Methods
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
receive(
covariant T subject) → void -
Calls
handlerand passes the notifying Subject. -
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited