MapEmitter<K, V> class

A ChangeEmitter implementation of a map. Modifying a MapEmitter won't automatically emit a change. To emit a change after it has been modified, call emit.

Mixed in types


MapEmitter(Map<K, V> map, {bool emitDetailedChanges = false})


changes Stream<MapChange<K, V>>
The stream of Changes to notify your UI or other state elements that they should update.
read-only, inherited
emitDetailedChanges bool
Whether to emit changes that include detailed information about the specific change. Defaults to false which will emit the same cached change object to minimize garbage collection. [...]
entries Iterable<MapEntry<K, V>>
The map entries of this.
read-only, inherited
hashCode int
The hash code for this object. [...]
read-only, inherited
isDisposed bool
Whether this has been disposed.
read-only, inherited
isEmpty bool
Whether there is no key/value pair in the map.
read-only, inherited
isNotEmpty bool
Whether there is at least one key/value pair in the map.
read-only, inherited
keys Iterable<K>
The keys of this. [...]
read-only, override
length int
The number of key/value pairs in the map.
read-only, inherited
parent ChangeEmitter<Change>
read-only, inherited
runtimeType Type
A representation of the runtime type of the object.
read-only, inherited
values Iterable<V>
The values of this. [...]
read-only, inherited


addAll(Map<K, V> other) → void
Adds all key/value pairs of other to this map. [...]
addChangeToStream(MapChange<K, V> change) → void
Used by subclasses to broadcast Changes.
@protected, inherited
addEntries(Iterable<MapEntry<K, V>> newEntries) → void
Adds all key/value pairs of newEntries to this map. [...]
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 pairs 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
Disposes resources and closes the stream controller.
@mustCallSuper, inherited
emit({bool quiet = false}) → dynamic
Emits a change if the map has been modified since the last emit (or since it was initialized). [...]
findAncestorOfExactType<T extends ChangeEmitter<Change>>() → T
@protected, inherited
forEach(void action(K key, V value)) → void
Applies action to each key/value pair of the map. [...]
map<K2, V2>(MapEntry<K2, V2> transform(K key, V value)) Map<K2, V2>
Returns a new map where all entries of this map are transformed by the given convert function.
noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed. [...]
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. [...]
removeWhere(bool test(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 ==(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. [...]