ListBeacon<E> class

A beacon that holds a list of values.

Inheritance

Constructors

ListBeacon(List<E> initialValue, {String? name})
@macro ListBeacon

Properties

$$widgetSubscribers$$ → Set<int>
The hashcode of all widgets subscribed to this beacon. This should not be used directly.
finalinherited
first ← E
Set the first element of the list.
no getter
hashCode → int
The hash code for this object.
no setterinherited
initialValue → List<E>
The initial value of the beacon.
no setterinherited
isDisposed → bool
Returns true if the beacon has been disposed.
no setterinherited
isEmpty → bool
Returns true if the beacon has not been initialized.
no setterinherited
last ← E
Set the last element of the list.
no getter
length ← int
Setting the length changes the number of elements in the list.
no getter
listenersCount → int
The number of listeners subscribed to this beacon.
no setterinherited
name → String
The name of the beacon. For debugging purposes.
no setterinherited
previousValue → List<E>?
The previous value of the beacon.
no setterinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
stream → Stream<List<E>>
Returns a broadcast Stream that emits the current value and all subsequent updates to the value of this beacon.
no setterinherited
value ↔ List<E>
Returns the current value and subscribes to changes in the beacon when used within a Beacon.effect or Beacon.derived.
getter/setter pairinherited

Methods

add(E value) → void
Adds value to the end of this list, extending the length by one.
addAll(Iterable<E> iterable) → void
Appends all objects of iterable to the end of this list.
call() → List<E>
Equivalent to calling value getter.
inherited
clear() → void
Removes all objects from this list; the length of the list becomes zero.
clearWrapped() → void
Disposes all currently wrapped beacons
inherited
dispose() → void
Clears all registered listeners and resouces used by the beacon. You will not be able to update or subscribe to the beacon after it has been disposed.
inherited
fillRange(int start, int end, [E? fillValue]) → void
Overwrites a range of elements with fillValue.
insert(int index, E element) → void
Inserts element at position index in this list.
insertAll(int index, Iterable<E> iterable) → void
Inserts all objects of iterable at position index in this list.
mapInPlace(E toElement(E)) → void
Like List.map, but updates the list in place.
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
onDispose(VoidCallback callback) → VoidCallback
Registers a callback to be called when the beacon is disposed. Returns a function that can be called to remove the callback.
inherited
peek() → List<E>
Return the current value of the beacon without subscribing to it.
inherited
remove(Object? value) → bool
Removes the first occurrence of value from this list.
removeAt(int index) → E
Removes the object at position index from this list.
removeLast() → E
Removes and returns the last object in this list.
removeRange(int start, int end) → void
Removes a range of elements from the list.
removeWhere(bool test(E element)) → void
Removes all objects from this list that satisfy test.
replaceRange(int start, int end, Iterable<E> replacements) → void
Replaces a range of elements with the elements of replacements.
reset({bool force = false}) → void
Clears the list
override
retainWhere(bool test(E element)) → void
Removes all objects from this list that fail to satisfy test.
set(List<E> newValue, {bool force = false}) → void
Sets the value of the beacon and allows a force notification
inherited
setAll(int index, Iterable<E> iterable) → void
Overwrites elements with the objects of iterable.
setRange(int start, int end, Iterable<E> iterable, [int skipCount = 0]) → void
Writes some elements of iterable into a range of this list.
shuffle([Random? random]) → void
Shuffles the elements of this list randomly.
sort([int compare(E a, E b)?]) → void
Sorts this list according to the order specified by the compare function.
subscribe(void callback(List<E>), {bool startNow = true, bool synchronous = false}) → VoidCallback
Subscribes to changes in the beacon returns a function that can be called to unsubscribe
inherited
toStream({bool synchronous = false}) → Stream<List<E>>
Returns a broadcast Stream that emits the current value and all subsequent updates to the value of this beacon. If synchronous is true, autobatching will be disabled and all updates will be emitted immediately.
inherited
toString() → String
A string representation of this object.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited
operator []=(int index, E value) → void
Sets the value at the given index in the list to value.