PropertyChangeNotifier<K extends Object> mixin
Supplies property changes and various hooks to implement Observable.
May use notifyChange or notifyPropertyChange to queue a property change
record; they are asynchronously delivered at the end of the VM turn.
PropertyChangeNotifier may be extended or used as a delegate. To use as
a mixin, instead use with PropertyChangeMixin:
with ChangeNotifier
- Implemented types
- Mixin applications
Properties
-
changes
→ Stream<
List< ChangeRecord> > -
Emits a list of changes when the state of the object changes.
no setterinherited
- hashCode → int
-
The hash code for this object.
no setterinherited
- hasObservers → bool
-
Whether changes has at least one active listener.
no setterinherited
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
Methods
-
deliverChanges(
) → bool -
If hasObservers, synchronously emits changes that have been queued.
inherited
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
notifyChange(
[ChangeRecord? change]) → void -
Schedules
changeto be delivered.inherited -
notifyPropertyChange<
T> (K field, T oldValue, T newValue) → T -
observed(
) → void -
May override to be notified when changes is first observed.
inherited
-
toString(
) → String -
A string representation of this object.
inherited
-
unobserved(
) → void -
May override to be notified when changes is no longer observed.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited