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

Properties

first ↔ T
The first element.
getter/setter pairinherited-getteroverride-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
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
nonNulls → Iterable<T>

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

The non-null elements of this iterable.
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

Gets all selected item values in the tree.
no setter
selectedNodes → List<TreeNode<K>>

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

Gets all selected nodes in the tree.
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
toJSIterable → JSIterable<T>

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

A JSIterable wrapper that proxies to the Dart iterable API.
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
value → List<T>
The current value of the object.
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
addAll(Iterable<T> values) → void
Appends all objects of iterable to the end of this list.
override
addChangeListener(ListChangeListener<T> listener) → void
Adds a listener to be notified of changes.
override
addListener(VoidCallback listener) → void
Register a closure to be called when the object notifies its listeners.
override
any(bool test(T element)) → bool
Checks whether any element of this iterable satisfies test.
inherited
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.
buildSeparator(ValueGetter<T> separator) → Iterable<T>

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

Joins iterable items with dynamically built separators.
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
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

Collapses all nodes in the tree.
collapseItem(K target) → List<TreeNode<K>>

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

Collapses a node by its item value.
collapseNode(TreeNode<K> target) → List<TreeNode<K>>

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

Collapses a specific node.
contains(Object? element) → bool
Whether the collection contains an element equal to element.
inherited
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

Deselects all nodes in the tree.
deselectItem(K target) → List<TreeNode<K>>

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

Deselects a node by its item value.
deselectItems(Iterable<K> items) → List<TreeNode<K>>

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

Deselects nodes by their item values.
deselectNode(TreeNode<K> target) → List<TreeNode<K>>

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

Deselects a specific node.
deselectNodes(Iterable<TreeNode<K>> nodes) → List<TreeNode<K>>

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

Deselects specific nodes.
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

Expands all nodes in the tree.
expandItem(K target) → List<TreeNode<K>>

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

Expands a node by its item value.
expandNode(TreeNode<K> target) → List<TreeNode<K>>

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

Expands a specific node.
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
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

Finds the first index of an element, returning null if not found.
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

Finds the first index where test is true, returning null if not found.
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

Joins iterable items with a separator between each.
joinSeparator(T separator) → List<T>

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

Joins widgets with a separator between each item.
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

Finds the last index of an element, returning null if not found.
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

Finds the last index where test is true, returning null if not found.
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
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
notifyListeners(ListChangeDetails<T> details) → void
Notifies listeners of the changes.
optGet(int index) → T?

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

Safely gets an element at index, returning null if out of bounds.
otpToString() → String

Available on OTPCodepointList, provided by the OTPCodepointListExtension extension

Converts the codepoint list to a string.
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
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
Removes a listener from being notified of changes.
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

Replaces a node by its item value.
replaceNode(TreeNode<K> oldNode, TreeNode<K> newNode) → List<TreeNode<K>>

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

Replaces a specific node in the tree.
replaceNodes(TreeNodeUnaryOperator<K> operator) → List<TreeNode<K>>

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

Applies an operator to all nodes in the tree.
replaceNodesWithParent(TreeNodeUnaryOperatorWithParent<K> operator) → List<TreeNode<K>>

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

Applies an operator to all nodes with parent context.
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
selectAll() → List<TreeNode<K>>

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

Selects all nodes in the tree.
selectItem(K target) → List<TreeNode<K>>

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

Selects a node by its item value.
selectItems(Iterable<K> items) → List<TreeNode<K>>

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

Selects nodes by their item values.
selectNode(TreeNode<K> target) → List<TreeNode<K>>

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

Selects a specific node.
selectNodes(Iterable<TreeNode<K>> nodes) → List<TreeNode<K>>

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

Selects specific nodes.
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

Sets the selected items by value, replacing current selection.
setSelectedNodes(Iterable<TreeNode<K>> nodes) → List<TreeNode<K>>

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

Sets the selected nodes, replacing current selection.
shuffle([Random? random]) → void
Shuffles the elements of this list randomly.
override
singleWhere(bool test(T element), {T orElse()?}) → T
The single element that satisfies test.
inherited
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
sort([int compare(T a, T b)?]) → void
Sorts this list according to the order specified by the compare function.
override
sublist(int start, [int? end]) → List<T>
Returns a new list containing the elements between start and end.
override
swapItem(T element, int targetIndex) → bool

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

Moves an element to a target index in the list.
swapItemWhere(Predicate<T> test, int targetIndex) → bool

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

Moves the first element matching test to a target index.
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
toggleSelectAll() → List<TreeNode<K>>

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

Toggles selection state of all nodes in the tree.
toggleSelectItem(K target) → List<TreeNode<K>>

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

Toggles selection state of a node by its item value.
toggleSelectItems(Iterable<K> targets) → List<TreeNode<K>>

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

Toggles selection state of multiple items.
toggleSelectNode(TreeNode<K> target) → List<TreeNode<K>>

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

Toggles selection state of a specific node.
toggleSelectNodes(Iterable<TreeNode<K>> targets) → List<TreeNode<K>>

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

Toggles selection state of multiple nodes.
toList({bool growable = true}) → List<T>
Creates a List containing the elements of this Iterable.
inherited
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

Updates selection state based on recursive selection rules.
where(bool test(T element)) → Iterable<T>
Creates a new lazy Iterable with all elements that satisfy the predicate test.
inherited
whereType<T>() → Iterable<T>
Creates a new lazy Iterable with all elements that have type T.
inherited

Operators

operator +(List<T> other) → List<T>
Returns the concatenation of this list and other.
override
operator ==(Object other) → bool
The equality operator.
inherited
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