ChangeNotifier<C extends ChangeRecord> class Null safety

Supplies changes and various hooks to implement Observable.

May use notifyChange to queue a change record; they are asynchronously delivered at the end of the VM turn.

ChangeNotifier may be extended, mixed in, or used as a delegate.

Implemented types

Constructors

ChangeNotifier()

Properties

changes Stream<List<C>>
Emits a list of changes when the state of the object changes.
read-onlyoverride
hashCode int
The hash code for this object.
read-onlyinherited
hasObservers bool
Whether changes has at least one active listener.
read-onlyoverride
runtimeType Type
A representation of the runtime type of the object.
read-onlyinherited

Methods

deliverChanges() bool
If hasObservers, synchronously emits changes that have been queued.
override
noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed.
inherited
notifyChange([C? change]) → void
Schedules change to be delivered.
override
observed() → void
May override to be notified when changes is first observed.
override
toString() String
A string representation of this object.
inherited
unobserved() → void
May override to be notified when changes is no longer observed.
override

Operators

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