QueryScopedValue<TResult, TRef extends Ref> class abstract

Class for extensions to manage state.

After managing the state, return an object of TResult.

Implement the relevant state with ScopedValueState and create it with createState.

You can also specify a Ref that can be referenced by a child element by passing ref.

状態を管理するための拡張用のクラス。

状態を管理した後TResultのオブジェクトを返すようにします。

関連するステートをScopedValueStateで実装しcreateStateで作成します。

またrefを渡すことで子要素に参照可能なRefを指定できます。

Inheritance

• Object
• ScopedValue<TResult>
• QueryScopedValue

Available Extensions

• FutureIndicatorExtensions

Annotations

• @immutable

Constructors

QueryScopedValue({required TRef? ref})

const

Properties

hashCode → int

The hash code for this object.

no setter, inherited

ref → TRef?

Specify the associated TRef, if any.

final

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

createState() → QueryScopedValueState<TResult, TRef, QueryScopedValue<TResult, TRef>>

Creates and returns the associated state.

override

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited