BindableProperty<TValue> class abstract

绑定属性

Inheritance

• Object
• ChangeNotifier
• BindableProperty

Implemented types

• ValueListenable<TValue>

Implementers

• AsyncBindableProperty
• MergeBindableProperty
• MergeMapBindableProperty
• PeriodicBindableProperty
• TransformBindableProperty
• WriteableBindableProperty

Constructors

BindableProperty({PropertyValueChanged<TValue>? valueChanged})

BindableProperty

Properties

hashCode → int

The hash code for this object.

no setter, inherited

hasListeners → bool

Whether any listeners are currently registered.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

value → TValue

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

no setter, inherited

Methods

addListener(VoidCallback listener) → void

Register a closure to be called when the object changes.

inherited

dispose() → void

dispose

override

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

notify() → void

发送通知

notifyListeners() → void

Call all the registered listeners.

inherited

removeListener(VoidCallback listener) → void

Remove a previously registered closure from the list of closures that are notified when the object changes.

inherited

toString() → String

A string representation of this object.

inherited

transform<T>({required T? transformer(TValue), required T initial, PropertyValueChanged<T>? valueChanged}) → BindableProperty<T>

从当前绑定属性转换到一个新的绑定属性

Operators

operator ==(Object other) → bool

The equality operator.

inherited

Static Methods

$adaptive<TValue, TAdaptee extends Listenable>(TAdaptee adaptee, {required TValue valueGetter(TAdaptee), required void valueSetter(TAdaptee, TValue), PropertyValueChanged<TValue>? valueChanged, TValue? initial}) → AdaptiveBindableProperty<TValue, TAdaptee>

创建适配绑定属性

$async<TValue>(AsyncValueGetter<TValue> futureGetter, {TValue handle(TValue)?, void onStart()?, void onEnd()?, void onSuccess(TValue)?, void onError(dynamic)?, PropertyValueChanged<AsyncSnapshot<TValue>>? valueChanged, TValue? initial}) → AsyncBindableProperty<TValue>

创建具备处理异步请求的绑定属性

$custom<TValue>({required ValueGetter<TValue> valueGetter, required ValueSetter<TValue> valueSetter, PropertyValueChanged<TValue>? valueChanged}) → CustomBindableProperty<TValue>

创建自定义绑定属性

$filter<TValue>(ValueListenable<TValue> valueListenable, {required bool filter(TValue value), required TValue initial, PropertyValueChanged<TValue>? valueChanged}) → BindableProperty<TValue>

过滤指定 ValueListenable 得到一个新的绑定属性

$map<TValue>(Iterable<TValue> values, {PropertyValueChanged<TValue>? valueChanged}) → List<BindableProperty<TValue>>

将值 TValue 集合转换为绑定属性 BindableProperty 集合

$merge<TValue>(Iterable<ValueListenable<TValue>> valueListenables, {PropertyValueChanged<Iterable<TValue>>? valueChanged}) → MergeBindableProperty<TValue>

创建合并的绑定属性

$mergeMap<TValue>(Map<Object, ValueListenable<TValue>> map, {PropertyValueChanged<Map<Object, TValue>>? valueChanged}) → MergeMapBindableProperty<TValue>

创建具有键的合并的绑定属性

$periodic<TValue>({required Duration duration, required TValue tickToValue(int tick), required TValue initial, int initialTick = 0, bool autostart = false, int? repeat, void onTick(int tick)?, void statusChanged(PeriodicBindableProperty<TValue>)?, PropertyValueChanged<TValue>? valueChanged}) → PeriodicBindableProperty<TValue>

创建具有周期性的绑定属性

$tick({required Duration duration, int initial = 0, int initialTick = 0, bool autostart = false, int? repeat, void onTick(int tick)?, void statusChanged(PeriodicBindableProperty<int>)?, PropertyValueChanged<int>? valueChanged}) → PeriodicBindableProperty<int>

创建具有周期性的绑定属性

$transform<TValue, TSValue>(ValueListenable<TSValue> valueListenable, {required TValue? transformer(TSValue value), required TValue initial, PropertyValueChanged<TValue>? valueChanged}) → BindableProperty<TValue>

从指定 ValueListenable 转换到一个新的绑定属性

$value<TValue>({required TValue initial, PropertyValueChanged<TValue>? valueChanged}) → ValueBindableProperty<TValue>

创建值绑定属性