Observer<T> class
- Inheritance
-
- Object
- ChangeNotifier
- Observer
- Available extensions
Constructors
- Observer(T value)
Properties
- 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
- value ↔ T
-
getter/setter pair
Methods
-
add(
E element) → Observer< List< E> > -
Available on Observer<
List< , provided by the ObserverIterableExtension extensionE> > -
addAll(
Iterable< E> elements) → Observer<List< E> > -
Available on Observer<
List< , provided by the ObserverIterableExtension extensionE> > -
addListener(
VoidCallback listener) → void -
Register a closure to be called when the object changes.
inherited
-
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
-
insert(
int index, E element) → Observer< List< E> > -
Available on Observer<
List< , provided by the ObserverIterableExtension extensionE> > -
insertAll(
int index, Iterable< E> elements) → Observer<List< E> > -
Available on Observer<
List< , provided by the ObserverIterableExtension extensionE> > -
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
notify(
[VoidCallback? callback]) → Observer< T> -
notifyListeners(
) → void -
Call all the registered listeners.
inherited
-
remove(
E element) → Observer< List< E> > -
Available on Observer<
List< , provided by the ObserverIterableExtension extensionE> > -
removeAt(
int index) → Observer< List< E> > -
Available on Observer<
List< , provided by the ObserverIterableExtension extensionE> > -
removeListener(
VoidCallback listener) → void -
Remove a previously registered closure from the list of closures that are
notified when the object changes.
inherited
-
set(
T value) → void -
toggle(
E element, [bool? alreadyInserted]) → Observer< List< E> > -
Available on Observer<
List< , provided by the ObserverIterableExtension extensionE> > -
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited