MapNotifier<K, V> class

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

Inheritance

• Object
• Listenable
• ValueListenable<Map<K, V>>
• MapListenable<K, V>
• MapNotifier

Implemented types

• Map<K, V>

Mixed-in types

• ChangesNotifierHelperMixin

Available extensions

• TMap

Constructors

MapNotifier([Map<K, V> map = const {}])

Creates a map notifier.

Properties

entries → Iterable<MapEntry<K, V>>

The map entries of this Map.

no setter, override

hashCode → int

The hash code for this object.

no setter, inherited

hasListeners → bool

Whether the object has listeners.

no setter, inherited

isEmpty → bool

Whether there is no key/value pair in the map.

no setter, override

isNotEmpty → bool

Whether there is at least one key/value pair in the map.

no setter, override

keys → Iterable<K>

The keys of this Map.

no setter, override

length → int

The number of key/value pairs in the map.

no setter, override

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

value → Map<K, V>

The current value of the object. When the value changes, the callbacks registered with addListener will be invoked.

no setter, override

values → Iterable<V>

The values of this Map.

no setter, override

Methods

addAll(Map<K, V> other) → void

Adds all key/value pairs of other to this map.

override

addChangeListener(MapChangeListener<K, V> listener) → void

Adds a listener to be notified of changes.

override

addEntries(Iterable<MapEntry<K, V>> newEntries) → void

Adds all key/value pairs of newEntries to this map.

override

addListener(VoidCallback listener) → void

Register a closure to be called when the object notifies its listeners.

override

cast<RK, RV>() → Map<RK, RV>

Provides a view of this map as having RK keys and RV instances, if necessary.

override

clear() → void

Removes all entries from the map.

override

compute(K key, V compute(K key, V? value)) → V

Available on Map<K, V>, provided by the TMap extension

computeAsync(K key, Future<V> compute(K key, V? value)) → Future<V>

Available on Map<K, V>, provided by the TMap extension

computeIfAbsent(K key, V ifAbsent(K key)) → V

Available on Map<K, V>, provided by the TMap extension

computeIfAbsentAsync(K key, Future<V> ifAbsent(K key)) → Future<V>

Available on Map<K, V>, provided by the TMap extension

computeIfPresent(K key, V ifPresent(K key, V value)) → V

Available on Map<K, V>, provided by the TMap extension

computeIfPresentAsync(K key, Future<V> ifPresent(K key, V value)) → Future<V>

Available on Map<K, V>, provided by the TMap extension

containsKey(Object? key) → bool

Whether this map contains the given key.

override

containsValue(Object? value) → bool

Whether this map contains the given value.

override

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

dispose() → void

Disposes the object making it unusable for further operations and releasing the resources.

inherited

firstKeyWhere(bool test(V)) → K?

Available on Map<K, V>, provided by the TMap extension

firstValueWhere(bool test(K)) → V?

Available on Map<K, V>, provided by the TMap extension

flip() → Map<V, List<K>>

Available on Map<K, V>, provided by the TMap extension

flipFlat() → Map<V, K>

Available on Map<K, V>, provided by the TMap extension

forEach(void action(K key, V value)) → void

Applies action to each key/value pair of the map.

override

keysWhere(bool test(V)) → Iterable<K>

Available on Map<K, V>, provided by the TMap extension

map<K2, V2>(MapEntry<K2, V2> convert(K key, V value)) → Map<K2, V2>

Returns a new map where all entries of this map are transformed by the given convert function.

override

merge(Map<K, V> other) → Map<K, V>

Available on Map<K, V>, provided by the TMap extension

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

notifyListeners(MapChangeDetails<K, V> details) → void

Notifies listeners of the changes.

putIfAbsent(K key, V ifAbsent()) → V

Look up the value of key, or add a new entry if it isn't there.

override

remap((K, V)? remapper(MapEntry<K, V>)) → Map<K, V>

Available on Map<K, V>, provided by the TMap extension

remove(Object? key) → V?

Removes key and its associated value, if present, from the map.

override

removeChangeListener(MapChangeListener<K, V> listener) → void

Removes a listener from being notified of changes.

override

removeListener(VoidCallback listener) → void

Remove a previously registered closure from the list of closures that the object notifies.

override

removeWhere(bool test(K key, V value)) → void

Removes all entries of this map that satisfy the given test.

override

sortedKeysByValue(int compare(V, V)?) → List<K>

Available on Map<K, V>, provided by the TMap extension

sortedValuesByKey(int compare(K, K)?) → List<V>

Available on Map<K, V>, provided by the TMap extension

toString() → String

A string representation of this object.

override

update(K key, V update(V value), {V ifAbsent()?}) → V

Updates the value for the provided key.

override

updateAll(V update(K key, V value)) → void

Updates all values.

override

valuesWhere(bool test(K)) → Iterable<V>

Available on Map<K, V>, provided by the TMap extension

where(bool test(K key, V value)) → Map<K, V>

Available on Map<K, V>, provided by the TMap extension

Operators

operator +(Map<K, V> other) → Map<K, V>

Available on Map<K, V>, provided by the TMap extension

operator -(K k) → Map<K, V>

Available on Map<K, V>, provided by the TMap extension

operator ==(Object other) → bool

The equality operator.

inherited

operator [](Object? key) → V?

The value for the given key, or null if key is not in the map.

override

operator []=(K key, V value) → void

Associates the key with the given value.

override