BaseMapCachedWatcher<K, V> class
abstract
create a CachedWatcher of type Map, which reacts just like normal Map, but with watcher capabilities.
- Inheritance
-
- Object
- ChangeNotifier
- Watcher<
Map< K, V> > - CachedWatcher<
Map< K, V> > - BaseMapCachedWatcher
- Implemented types
-
- Map<
K, V>
- Map<
- Implementers
- Available Extensions
Constructors
-
BaseMapCachedWatcher(Map<
K, V> initialValue, String key)
Properties
- cache → Future
-
no setterinherited
-
entries
→ Iterable<
MapEntry< K, V> > -
The map entries of this.
no setteroverride
- hashCode → int
-
The hash code for this object.
no setterinherited
- hasListeners → bool
-
Whether any listeners are currently registered.
no setterinherited
-
initialValue
→ Map<
K, V> -
finalinherited
- isCaching → bool
-
isCaching
no setterinherited
- isDisposed → bool
-
Flag which returns true if you called the dispose method.
It is useful when you want to safely do some operations on the Watcher without getting an exception if it gets disposed.
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
- key ↔ String
-
key
latefinalinherited
-
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
- safeMode → bool
-
safeMode if enabled will not allow any setting of value or notifying any listeners if the Watcher isDisposed
finalinherited
-
stream
→ Stream<
Map< K, V> > -
Converts the Watcher into a Stream. This stream emits values whenever the
value changes. The use of
distinctensures that consecutive duplicate values are filtered out, thus the stream only emits when the value actually changes.no setterinherited -
v
↔ Map<
K, V> -
Equivalent to the getter value but in shorter syntax.
getter/setter pairinherited
-
value
↔ Map<
K, V> -
The current value stored in this watcher.
getter/setter pairinherited
-
values
→ Iterable<
V> -
The values of this.
no setteroverride
Methods
-
addAll(
Map< K, V> other) → void -
Adds all key/value pairs of
otherto this map.override -
addEntries(
Iterable< MapEntry< newEntries) → voidK, V> > -
Adds all key/value pairs of
newEntriesto this map.override -
addListener(
VoidCallback listener) → void -
Register a closure to be called when the object changes.
inherited
-
cast<
RK, RV> () → Map< RK, RV> -
Provides a view of this map as having
RKkeys andRVinstances, if necessary.override -
clear(
) → void -
Removes all entries from the map.
override
-
containsKey(
Object? key) → bool -
Whether this map contains the given
key.override -
containsValue(
Object? value) → bool -
Whether this map contains the given
value.override -
debounce(
Duration duration, void action(Map< K, V> value)) → VoidCallback -
Registers a debounced callback which is invoked only after the notifier's value
is stable for the specified
duration.inherited -
deleteCache(
) → Future< void> -
deleteCache
inherited
-
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).
inherited
-
forEach(
void action(K key, V value)) → void -
Applies
actionto each key/value pair of the map.override -
isEqual(
Map< K, V> other) → bool - Compares two maps for element-by-element equality.
-
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
convertfunction.override -
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
notifyListeners(
) → void -
Call all the registered listeners.
inherited
-
onChange(
void action(Map< K, V> value)) → VoidCallback -
Registers a callback to be invoked whenever the
ValueNotifier's value changes.inherited -
putIfAbsent(
K key, V ifAbsent()) → V -
Look up the value of
key, or add a new entry if it isn't there.override -
read(
dynamic data) → FutureOr< Map< K, V> ?> -
read
inherited
-
refresh(
) → void -
Rebuilds and trigger any listeners of any WatchValue or
watchattached to that Watcher.inherited -
remove(
Object? key) → V? -
Removes
keyand its associated value, if present, from the map.override -
removeListener(
VoidCallback listener) → void -
Remove a previously registered closure from the list of closures that are
notified when the object changes.
inherited
-
removeWhere(
bool test(K key, V value)) → void -
Removes all entries of this map that satisfy the given
test.override -
setWithoutNotify(
Map< K, V> newValue) → void -
inherited
-
startCaching(
) → void -
startCaching
inherited
-
stopCaching(
) → void -
stopCaching
inherited
-
toString(
) → String -
A string representation of this object.
inherited
-
update(
K key, V update(V value), {V ifAbsent()?, bool refresh = true}) → V -
Updates the value for the provided
key.override -
updateAll(
V update(K key, V value)) → void -
Updates all values.
override
-
updateIf(
bool condition(Map< K, V> ), Map<K, V> newValue) → void -
Updates the
ValueNotifier's value tonewValueifconditionreturns true.inherited -
updateOnAction<
R> (R action()) → R -
Will notifyListeners after a specific
actionhas been made, and optionally return a resultRof certain type.inherited -
write(
Map< K, V> value) → FutureOr -
write
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited
-
operator [](
Object? key) → V? -
The value for the given
key, ornullifkeyis not in the map.override -
operator []=(
K key, V value) → void -
Associates the
keywith the givenvalue.override