NotifiableMap<K, V> class

Class that mimics Map, and notify its listener every time the map is changed.

This map will notify its listener when a change is detected (an entry has been added, removed, updated, etc... or the map has been sorted, mapped, etc...). However, it won't notify its listener if its items are changed, even if they extends ChangeNotifier.

Implemented types


Create an empty NotifiableMap.
NotifiableMap.from(Map<K, V> other)
Create a NotifiableMap by adding all elements from other, regardless of their type.
NotifiableMap.of(Map<K, V> other)
Create a NotifiableMap by adding all elements of other of types K, V.


entries Iterable<MapEntry<K, V>>
The map entries of this.
no setteroverride
hashCode int
The hash code for this object.
no setteroverride
hasListeners bool
Whether any listeners are currently registered.
no setterinherited
isEmpty bool
Whether there is no key/value pair in the map.
no setteroverride
isNotEmpty bool
Whether there is at least one key/value pair in the map.
no setteroverride
keys Iterable<K>
The keys of this.
no setteroverride
length int
The number of key/value pairs in the map.
no setteroverride
runtimeType Type
A representation of the runtime type of the object.
no setterinherited
values Iterable<V>
The values of this.
no setteroverride


addAll(Map<K, V> other) → void
Adds all key/value pairs of other to this map.
addEntries(Iterable<MapEntry<K, V>> newEntries) → void
Adds all key/value pairs of newEntries to this map.
addListener(VoidCallback listener) → void
Register a closure to be called when the object changes.
cast<RK, RV>() Map<RK, RV>
Provides a view of this map as having RK keys and RV instances, if necessary.
clear() → void
Removes all entries from the map.
containsKey(Object? key) bool
Whether this map contains the given key.
containsValue(Object? value) bool
Whether this map contains the given value.
dispose() → void
Discards any resources used by the object. After this is called, the object is not in a usable state and should be discarded (calls to addListener will throw after the object is disposed).
forEach(void f(K key, V value)) → void
Applies action to each key/value pair of the map.
map<RK, RV>(MapEntry<RK, RV> f(K key, V value)) Map<RK, RV>
Returns a new map where all entries of this map are transformed by the given convert function.
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
notifyListeners() → void
Call all the registered listeners.
putIfAbsent(K key, V ifAbsent()) → V
Look up the value of key, or add a new entry if it isn't there.
remove(Object? key) → V?
Removes key and its associated value, if present, from the map.
removeListener(VoidCallback listener) → void
Remove a previously registered closure from the list of closures that are notified when the object changes.
removeWhere(bool predicate(K key, V value)) → void
Removes all entries of this map that satisfy the given test.
toString() String
A string representation of this object.
update(K key, V update(V value), {V ifAbsent()?}) → V
Updates the value for the provided key.
updateAll(V update(K key, V value)) → void
Updates all values.


operator +(NotifiableMap<K, V> other) NotifiableMap<K, V>
Creates a new NotifiableMap that contains the entries of this map and the elements of other in that order.
operator ==(Object other) bool
The equality operator.
operator [](Object? key) → V?
The value for the given key, or null if key is not in the map.
operator []=(K key, V value) → void
Associates the key with the given value.