ListNotifier<T> class

A list that can be listened to for changes and notifies listeners when the list changes.

Inheritance
Implemented types
Mixed-in types
Available extensions

Constructors

ListNotifier.new([List<T> list = const []])
Creates a list notifier.

Properties

ascending → List<int>

Available on Iterable<int>, provided by the TIterableInt extension

no setter
ascending → List<double>

Available on Iterable<double>, provided by the TIterableDouble extension

no setter
descending → List<double>

Available on Iterable<double>, provided by the TIterableDouble extension

no setter
descending → List<int>

Available on Iterable<int>, provided by the TIterableInt extension

no setter
evens → Iterable<int>

Available on Iterable<int>, provided by the TIterableInt extension

no setter
first ↔ T
The first element.
getter/setter pairinherited-getteroverride-setter
firstOr → T?

Available on Iterable<T>, provided by the TIterable extension

no setter
firstOrNull → T?

Available on Iterable<T>, provided by the IterableExtensions extension

The first element of this iterator, or null if the iterable is empty.
no setter
hashCode → int
The hash code for this object.
no setterinherited
hasListeners → bool
Whether the object has listeners.
no setterinherited
indexed → Iterable<(int, T)>

Available on Iterable<T>, provided by the IterableExtensions extension

Pairs of elements of the indices and elements of this iterable.
no setter
isEmpty → bool
Whether this collection has no elements.
no setterinherited
isNotEmpty → bool
Whether this collection has at least one element.
no setterinherited
iterator → Iterator<T>
A new Iterator that allows iterating the elements of this Iterable.
no setteroverride
last ↔ T
The last element.
getter/setter pairinherited-getteroverride-setter
lastIndex → int

Available on Iterable<T>, provided by the TIterable extension

Returns the last index of the iterable.
no setter
lastOrNull → T?

Available on Iterable<T>, provided by the IterableExtensions extension

The last element of this iterable, or null if the iterable is empty.
no setter
length ↔ int
The number of objects in this list.
getter/setter pairoverride
list → List<T>

Available on Iterable<T>, provided by the TIterable extension

no setter
middleIndex → int

Available on Iterable<T>, provided by the TIterable extension

Returns the middle index of the iterable.
no setter
mostCommon → T?

Available on Iterable<T>, provided by the TIterable extension

no setter
nonNulls → Iterable<T>

Available on Iterable<T?>, provided by the NullableIterableExtensions extension

The non-null elements of this iterable.
no setter
notNull → Iterable<T>

Available on Iterable<T>, provided by the TIterable extension

no setter
odds → Iterable<int>

Available on Iterable<int>, provided by the TIterableInt extension

no setter
primes → Iterable<int>

Available on Iterable<int>, provided by the TIterableInt extension

no setter
reversed → Iterable<T>
An Iterable of the objects in this list in reverse order.
no setteroverride
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
selectedItems → List<K>

Available on List<TreeNode<K>>, provided by the TreeNodeListExtension extension

no setter
selectedNodes → List<TreeNode<K>>

Available on List<TreeNode<K>>, provided by the TreeNodeListExtension extension

no setter
set → Set<T>

Available on Iterable<T>, provided by the TIterable extension

no setter
single → T
Checks that this iterable has only one element, and returns that element.
no setterinherited
singleOrNull → T?

Available on Iterable<T>, provided by the IterableExtensions extension

The single element of this iterator, or null.
no setter
toJS → JSArray<T>

Available on List<T>, provided by the ListToJSArray extension

Converts this List to a JSArray by either casting, unwrapping, or cloning the List.
no setter
toJSProxyOrRef → JSArray<T>

Available on List<T>, provided by the ListToJSArray extension

Converts this List to a JSArray by either casting, unwrapping, or proxying the List.
no setter
unique → Iterable<T>

Available on Iterable<T>, provided by the TIterable extension

no setter
value → List<T>
The current value of the object. When the value changes, the callbacks registered with addListener will be invoked.
no setteroverride
wait → Future<List<T>>

Available on Iterable<Future<T>>, provided by the FutureIterable extension

Waits for futures in parallel.
no setter

Methods

add(T value) → void
Adds value to the end of this list, extending the length by one.
override
add(T element) → Iterable<T>

Available on Iterable<T>, provided by the TIterable extension

addAll(Iterable<T> values) → void
Appends all objects of iterable to the end of this list.
override
addAll(Iterable<T> elements) → Iterable<T>

Available on Iterable<T>, provided by the TIterable extension

addAllFirst(Iterable<T> elements) → Iterable<T>

Available on Iterable<T>, provided by the TIterable extension

addChangeListener(ListChangeListener<T> listener) → void
override
addFirst(T element) → Iterable<T>

Available on Iterable<T>, provided by the TIterable extension

addListener(VoidCallback listener) → void
Register a closure to be called when the object notifies its listeners.
override
and(Stream other) → List<Stream>

Available on List<Stream>, provided by the XStreamList extension

animate({List<Effect>? effects, AnimateCallback? onInit, AnimateCallback? onPlay, AnimateCallback? onComplete, bool? autoPlay, Duration? delay, Duration? interval}) → AnimateList<Widget>

Available on List<Widget>, provided by the AnimateListExtensions extension

Wraps the target List<Widget> in an AnimateList instance, and returns the instance for chaining calls. Ex. [foo, bar].animate() is equivalent to AnimateList(children: [foo, bar]).
any(bool test(T element)) → bool
Checks whether any element of this iterable satisfies test.
inherited
asKeys<R>(R f(T)) → Map<T, R>

Available on Iterable<T>, provided by the TIterable extension

Returns a new Map where the values are used as keys in a map.
asMap() → Map<int, T>
An unmodifiable Map view of this list.
override
asNameMap() → Map<String, T>

Available on Iterable<T>, provided by the EnumByName extension

Creates a map from the names of enum values to the values.
asValues<R>(R f(T)) → Map<R, T>

Available on Iterable<T>, provided by the TIterable extension

Returns a new Map where the values are used as values in a map.
average() → double

Available on Iterable<int>, provided by the TIterableInt extension

average() → double

Available on Iterable<double>, provided by the TIterableDouble extension

averageInt() → int

Available on Iterable<int>, provided by the TIterableInt extension

buildSeparator(Supplier<T> separator) → Iterable<T>

Available on Iterable<T>, provided by the IterableExtension extension

byName(String name) → T

Available on Iterable<T>, provided by the EnumByName extension

Finds the enum value in this list with name name.
cast<R>() → List<R>
Returns a view of this list as a list of R instances.
override
chunked(int chunkSize) → Iterable<List<T>>

Available on Iterable<T>, provided by the TIterable extension

clear() → void
Removes all objects from this list; the length of the list becomes zero.
override
collapseAll() → List<TreeNode<K>>

Available on List<TreeNode<K>>, provided by the TreeNodeListExtension extension

collapseItem(K target) → List<TreeNode<K>>

Available on List<TreeNode<K>>, provided by the TreeNodeListExtension extension

collapseNode(TreeNode<K> target) → List<TreeNode<K>>

Available on List<TreeNode<K>>, provided by the TreeNodeListExtension extension

column({Key? key, CrossAxisAlignment crossAxisAlignment = CrossAxisAlignment.center, MainAxisAlignment mainAxisAlignment = MainAxisAlignment.start, MainAxisSize mainAxisSize = MainAxisSize.max, VerticalDirection verticalDirection = VerticalDirection.down, TextBaseline textBaseline = TextBaseline.alphabetic, TextDirection textDirection = TextDirection.ltr}) → Widget

Available on Iterable<Widget>, provided by the XIterableWidget extension

conjureSort(ConjuredField field, {bool descending = false}) → List<T>

Available on List<T>, provided by the XListConjured extension

contains(Object? element) → bool
Whether the collection contains an element equal to element.
inherited
deduplicated() → Iterable<T>

Available on Iterable<T>, provided by the TIterable extension

Returns a new Iterable with deduplicated elements.
deduplicatedList() → List<T>

Available on Iterable<T>, provided by the TIterable extension

Returns a new List with deduplicated elements.
defaultAddListener(ChangeListener listener) → void
Add a listener to the list of listeners.
inherited
defaultNotifyListeners(Object? event) → void
Notify all the listeners.
inherited
defaultRemoveListener(ChangeListener listener) → void
Remove a listener from the list of listeners.
inherited
deselectAll() → List<TreeNode<K>>

Available on List<TreeNode<K>>, provided by the TreeNodeListExtension extension

deselectItem(K target) → List<TreeNode<K>>

Available on List<TreeNode<K>>, provided by the TreeNodeListExtension extension

deselectItems(Iterable<K> items) → List<TreeNode<K>>

Available on List<TreeNode<K>>, provided by the TreeNodeListExtension extension

deselectNode(TreeNode<K> target) → List<TreeNode<K>>

Available on List<TreeNode<K>>, provided by the TreeNodeListExtension extension

deselectNodes(Iterable<TreeNode<K>> nodes) → List<TreeNode<K>>

Available on List<TreeNode<K>>, provided by the TreeNodeListExtension extension

diff(Iterable<T> other) → Iterable<T>

Available on Iterable<T>, provided by the TIterable extension

dispose() → void
Disposes the object making it unusable for further operations and releasing the resources.
inherited
elementAt(int index) → T
Returns the indexth element.
inherited
elementAtOrNull(int index) → T?

Available on Iterable<T>, provided by the IterableExtensions extension

The element at position index of this iterable, or null.
every(bool test(T element)) → bool
Checks whether every element of this iterable satisfies test.
inherited
expand<T>(Iterable<T> toElements(T element)) → Iterable<T>
Expands each element of this Iterable into zero or more elements.
inherited
expandAll() → List<TreeNode<K>>

Available on List<TreeNode<K>>, provided by the TreeNodeListExtension extension

expandItem(K target) → List<TreeNode<K>>

Available on List<TreeNode<K>>, provided by the TreeNodeListExtension extension

expandNode(TreeNode<K> target) → List<TreeNode<K>>

Available on List<TreeNode<K>>, provided by the TreeNodeListExtension extension

fillRange(int start, int end, [T? fillValue]) → void
Overwrites a range of elements with fillValue.
override
firstWhere(bool test(T element), {T orElse()?}) → T
The first element that satisfies the given predicate test.
inherited
fold<T>(T initialValue, T combine(T previousValue, T element)) → T
Reduces a collection to a single value by iteratively combining each element of the collection with an existing value
inherited
followedBy(Iterable<T> other) → Iterable<T>
Creates the lazy concatenation of this iterable and other.
inherited
forEach(void action(T element)) → void
Invokes action on each element of this iterable in iteration order.
inherited
getRange(int start, int end) → Iterable<T>
Creates an Iterable that iterates over a range of elements.
override
groupBy<M>(M grouper(T)) → Map<M, List<T>>

Available on Iterable<T>, provided by the TIterable extension

indexOf(T element, [int start = 0]) → int
The first index of element in this list.
override
indexOfOrNull(T obj, [int start = 0]) → int?

Available on List<T>, provided by the ListExtension extension

indexWhere(bool test(T element), [int start = 0]) → int
The first index in the list that satisfies the provided test.
override
indexWhereOrNull(Predicate<T> test, [int start = 0]) → int?

Available on List<T>, provided by the ListExtension extension

insert(int index, T value) → void
Inserts element at position index in this list.
override
insertAll(int index, Iterable<T> values) → void
Inserts all objects of iterable at position index in this list.
override
join([String separator = ""]) → String
Converts each element to a String and concatenates the strings.
inherited
joinSeparator(T separator) → Iterable<T>

Available on Iterable<T>, provided by the IterableExtension extension

joinSeparator(T separator) → List<T>

Available on List<T>, provided by the Joinable extension

lastIndexOf(T element, [int? start]) → int
The last index of element in this list.
override
lastIndexOfOrNull(T obj, [int? start]) → int?

Available on List<T>, provided by the ListExtension extension

lastIndexWhere(bool test(T element), [int? start]) → int
The last index in the list that satisfies the provided test.
override
lastIndexWhereOrNull(Predicate<T> test, [int? start]) → int?

Available on List<T>, provided by the ListExtension extension

lastWhere(bool test(T element), {T orElse()?}) → T
The last element that satisfies the given predicate test.
inherited
map<T>(T toElement(T e)) → Iterable<T>
The current elements of this iterable modified by toElement.
inherited
mapIndexed<V>(V f(T value, int index)) → Iterable<V>

Available on Iterable<T>, provided by the TIterable extension

mapList<R>(R f(T)) → List<R>

Available on Iterable<T>, provided by the TIterable extension

Returns a new List with mapped elements.
max() → double

Available on Iterable<double>, provided by the TIterableDouble extension

max() → int

Available on Iterable<int>, provided by the TIterableInt extension

median() → int

Available on Iterable<int>, provided by the TIterableInt extension

median() → double

Available on Iterable<double>, provided by the TIterableDouble extension

merge<O>(O mapper(List buffer)) → Multiplexer<O>

Available on List<Stream>, provided by the XStreamList extension

middleValue() → T?

Available on Iterable<T>, provided by the TIterable extension

Returns the middle element of the iterable.
min() → double

Available on Iterable<double>, provided by the TIterableDouble extension

min() → int

Available on Iterable<int>, provided by the TIterableInt extension

mode() → int

Available on Iterable<int>, provided by the TIterableInt extension

mode() → double

Available on Iterable<double>, provided by the TIterableDouble extension

noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
notifyListeners(ListChangeDetails<T> details) → void
Notifies listeners of the changes.
occurrences() → Map<T, int>

Available on Iterable<T>, provided by the TIterable extension

Returns a new Map with the number of occurrences of each element.
optGet(int index) → T?

Available on List<T>, provided by the ListExtension extension

otpToString() → String

Available on OTPCodepointList, provided by the OTPCodepointListExtension extension

popRandom([Random? random]) → T

Available on List<T>, provided by the TList extension

product() → int

Available on Iterable<int>, provided by the TIterableInt extension

product() → double

Available on Iterable<double>, provided by the TIterableDouble extension

randomIndex([Random? random]) → int

Available on List<T>, provided by the TList extension

reduce(T combine(T value, T element)) → T
Reduces a collection to a single value by iteratively combining elements of the collection using the provided function.
inherited
reduceOr(T or, T combine(T, T)) → T

Available on Iterable<T>, provided by the TIterable extension

remove(Object? value) → bool
Removes the first occurrence of value from this list.
override
removeAt(int index) → T
Removes the object at position index from this list.
override
removeChangeListener(ListChangeListener<T> listener) → void
override
removeLast() → T
Removes and returns the last object in this list.
override
removeListener(VoidCallback listener) → void
Remove a previously registered closure from the list of closures that the object notifies.
override
removeRange(int start, int end) → void
Removes a range of elements from the list.
override
removeWhere(bool test(T element)) → void
Removes all objects from this list that satisfy test.
override
replaceItem(K oldItem, TreeNode<K> newItem) → List<TreeNode<K>>

Available on List<TreeNode<K>>, provided by the TreeNodeListExtension extension

replaceNode(TreeNode<K> oldNode, TreeNode<K> newNode) → List<TreeNode<K>>

Available on List<TreeNode<K>>, provided by the TreeNodeListExtension extension

replaceNodes(TreeNodeUnaryOperator<K> operator) → List<TreeNode<K>>

Available on List<TreeNode<K>>, provided by the TreeNodeListExtension extension

replaceNodesWithParent(TreeNodeUnaryOperatorWithParent<K> operator) → List<TreeNode<K>>

Available on List<TreeNode<K>>, provided by the TreeNodeListExtension extension

replaceRange(int start, int end, Iterable<T> newContents) → void
Replaces a range of elements with the elements of replacements.
override
retainWhere(bool test(T element)) → void
Removes all objects from this list that fail to satisfy test.
override
reversed() → Iterable<T>

Available on Iterable<T>, provided by the TIterable extension

Returns a new Iterable with reversed elements.
reversedList() → List<T>

Available on Iterable<T>, provided by the TIterable extension

Returns a new List with reversed elements.
row({Key? key, CrossAxisAlignment crossAxisAlignment = CrossAxisAlignment.center, MainAxisAlignment mainAxisAlignment = MainAxisAlignment.start, MainAxisSize mainAxisSize = MainAxisSize.max, VerticalDirection verticalDirection = VerticalDirection.down, TextBaseline textBaseline = TextBaseline.alphabetic, TextDirection textDirection = TextDirection.ltr}) → Widget

Available on Iterable<Widget>, provided by the XIterableWidget extension

select(bool test(T)) → T?

Available on Iterable<T>, provided by the TIterable extension

selectAll() → List<TreeNode<K>>

Available on List<TreeNode<K>>, provided by the TreeNodeListExtension extension

selectItem(K target) → List<TreeNode<K>>

Available on List<TreeNode<K>>, provided by the TreeNodeListExtension extension

selectItems(Iterable<K> items) → List<TreeNode<K>>

Available on List<TreeNode<K>>, provided by the TreeNodeListExtension extension

selectLast(bool test(T)) → T?

Available on Iterable<T>, provided by the TIterable extension

selectNode(TreeNode<K> target) → List<TreeNode<K>>

Available on List<TreeNode<K>>, provided by the TreeNodeListExtension extension

selectNodes(Iterable<TreeNode<K>> nodes) → List<TreeNode<K>>

Available on List<TreeNode<K>>, provided by the TreeNodeListExtension extension

setAll(int index, Iterable<T> values) → void
Overwrites elements with the objects of iterable.
override
setRange(int start, int end, Iterable<T> newContents, [int skipCount = 0]) → void
Writes some elements of iterable into a range of this list.
override
setSelectedItems(Iterable<K> items) → List<TreeNode<K>>

Available on List<TreeNode<K>>, provided by the TreeNodeListExtension extension

setSelectedNodes(Iterable<TreeNode<K>> nodes) → List<TreeNode<K>>

Available on List<TreeNode<K>>, provided by the TreeNodeListExtension extension

shuffle([Random? random]) → List<T>

Available on List<T>, provided by the TList extension

shuffle([Random? random]) → void
Shuffles the elements of this list randomly.
override
shuffled() → Iterable<T>

Available on Iterable<T>, provided by the TIterable extension

Returns a new Iterable with shuffled elements.
shuffledList() → List<T>

Available on Iterable<T>, provided by the TIterable extension

Returns a new List with shuffled elements.
singleWhere(bool test(T element), {T orElse()?}) → T
The single element that satisfies test.
inherited
skip(int n) → Iterable<T>

Available on Iterable<T>, provided by the TIterable extension

skip(int count) → Iterable<T>
Creates an Iterable that provides all but the first count elements.
inherited
skipWhile(bool test(T value)) → Iterable<T>
Creates an Iterable that skips leading elements while test is satisfied.
inherited
softMap<R>(R? f(T)) → Iterable<R>

Available on Iterable<T>, provided by the TIterable extension

Returns a new Iterable with mapped elements that are not null.
softMapList<R>(R? f(T)) → List<R>

Available on Iterable<T>, provided by the TIterable extension

Returns a new List with mapped elements that are not null.
sort([int compare(T a, T b)?]) → void
Sorts this list according to the order specified by the compare function.
override
sorted([int compare(T, T)?]) → List<T>

Available on Iterable<T>, provided by the TIterable extension

Returns a new List with sorted elements.
stack({Key? key, AlignmentGeometry alignment = AlignmentDirectional.topStart, TextDirection textDirection = TextDirection.ltr, StackFit fit = StackFit.loose, Clip clipBehavior = Clip.hardEdge}) → Widget

Available on Iterable<Widget>, provided by the XIterableWidget extension

sublist(int start, [int? end]) → List<T>
Returns a new list containing the elements between start and end.
override
sum() → int

Available on Iterable<int>, provided by the TIterableInt extension

sum() → double

Available on Iterable<double>, provided by the TIterableDouble extension

swapItem(T element, int targetIndex) → bool

Available on List<T>, provided by the ListExtension extension

swapItemWhere(Predicate<T> test, int targetIndex) → bool

Available on List<T>, provided by the ListExtension extension

take(int count) → Iterable<T>
Creates a lazy iterable of the count first elements of this iterable.
inherited
takeWhile(bool test(T value)) → Iterable<T>
Creates a lazy iterable of the leading elements satisfying test.
inherited
toBack(T element) → List<T>

Available on List<T>, provided by the TList extension

toBackWhere(bool test(T)) → List<T>

Available on List<T>, provided by the TList extension

toFront(T element) → List<T>

Available on List<T>, provided by the TList extension

toFrontWhere(bool test(T)) → List<T>

Available on List<T>, provided by the TList extension

toggleSelectAll() → List<TreeNode<K>>

Available on List<TreeNode<K>>, provided by the TreeNodeListExtension extension

toggleSelectItem(K target) → List<TreeNode<K>>

Available on List<TreeNode<K>>, provided by the TreeNodeListExtension extension

toggleSelectItems(Iterable<K> targets) → List<TreeNode<K>>

Available on List<TreeNode<K>>, provided by the TreeNodeListExtension extension

toggleSelectNode(TreeNode<K> target) → List<TreeNode<K>>

Available on List<TreeNode<K>>, provided by the TreeNodeListExtension extension

toggleSelectNodes(Iterable<TreeNode<K>> targets) → List<TreeNode<K>>

Available on List<TreeNode<K>>, provided by the TreeNodeListExtension extension

toList({bool growable = true}) → List<T>
Creates a List containing the elements of this Iterable.
inherited
toRect() → Rect

Available on Iterable<Offset>, provided by the XIterableOffset extension

toRect() → Rect

Available on Iterable<Rect>, provided by the XIterableRect extension

toSet() → Set<T>
Creates a Set containing the same elements as this iterable.
inherited
toString() → String
A string representation of this object.
override
updateRecursiveSelection() → List<TreeNode<K>>

Available on List<TreeNode<K>>, provided by the TreeNodeListExtension extension

wait() → Future<List<T>>

Available on Iterable<Future<T>>, provided by the TIterableFuture extension

weave(Iterable<T> other) → Iterable<T>

Available on Iterable<T>, provided by the TIterable extension

Weaves two iterables together into a new Iterable alternating elements.
where(bool test(T element)) → Iterable<T>
Creates a new lazy Iterable with all elements that satisfy the predicate test.
inherited
whereIndex(bool test(T value, int index)) → Iterable<T>

Available on Iterable<T>, provided by the TIterable extension

whereType<T>() → Iterable<T>
Creates a new lazy Iterable with all elements that have type T.
inherited
withPylons(PylonBuilder builder) → List<Widget>

Available on Iterable<T>, provided by the XPylonIterable extension

Operators

operator %(int value) → Iterable<double>

Available on Iterable<double>, provided by the TIterableDouble extension

operator %(int value) → Iterable<int>

Available on Iterable<int>, provided by the TIterableInt extension

operator &(int value) → Iterable<int>

Available on Iterable<int>, provided by the TIterableInt extension

operator *(int value) → Iterable<double>

Available on Iterable<double>, provided by the TIterableDouble extension

operator *(int value) → Iterable<int>

Available on Iterable<int>, provided by the TIterableInt extension

operator +(List<T> other) → List<T>
Returns the concatenation of this list and other.
override
operator +(int value) → Iterable<double>

Available on Iterable<double>, provided by the TIterableDouble extension

operator +(int value) → Iterable<int>

Available on Iterable<int>, provided by the TIterableInt extension

operator +(T element) → List<T>

Available on List<T>, provided by the TList extension

operator -(int value) → Iterable<double>

Available on Iterable<double>, provided by the TIterableDouble extension

operator -(int value) → Iterable<int>

Available on Iterable<int>, provided by the TIterableInt extension

operator -(T element) → List<T>

Available on List<T>, provided by the TList extension

operator /(int value) → Iterable<double>

Available on Iterable<double>, provided by the TIterableDouble extension

operator <<(int value) → Iterable<int>

Available on Iterable<int>, provided by the TIterableInt extension

operator ==(Object other) → bool
The equality operator.
inherited
operator >>(int value) → Iterable<int>

Available on Iterable<int>, provided by the TIterableInt extension

operator [](int index) → T
The object at the given index in the list.
override
operator []=(int index, T value) → void
Sets the value at the given index in the list to value.
override
operator ^(int value) → Iterable<int>

Available on Iterable<int>, provided by the TIterableInt extension

operator unary-() → Iterable<double>

Available on Iterable<double>, provided by the TIterableDouble extension

operator unary-() → Iterable<int>

Available on Iterable<int>, provided by the TIterableInt extension

operator |(int value) → Iterable<int>

Available on Iterable<int>, provided by the TIterableInt extension

operator ~() → Iterable<int>

Available on Iterable<int>, provided by the TIterableInt extension

operator ~/(int value) → Iterable<int>

Available on Iterable<int>, provided by the TIterableInt extension