ReactiveStatus<T> class

A widget that conditionally renders content based on the current reactive status of type T.

It listens to global status changes triggered by refreshStatus, and builds the corresponding widget defined in cases. If the current status is not handled, it falls back to defaultCase or renders an empty widget.

Useful for managing reactive UI flow based on enum-like states.

Example:

enum MyStatus { loading, success, error }

ReactiveStatus<MyStatus>(
  cases: {
    MyStatus.loading: () => CircularProgressIndicator(),
    MyStatus.success: () => Text("Done!"),
    MyStatus.error: () => Text("Oops!"),
  },
  defaultCase: () => Text("Idle"),
)

// Somewhere else:
refreshStatus(MyStatus.loading);

Inheritance

• Object
• DiagnosticableTree
• Widget
• StatefulWidget
• ReactiveStatus

Constructors

ReactiveStatus.new(Map<T, Widget Function()> cases, {Key? key, Widget defaultCase()?, Key? reactiveKey})

Creates a ReactiveStatus widget that reacts to changes in the global status of type T.

Properties

cases → Map<T, Widget Function()>

A map of status values to widget builder functions.

final

defaultCase → Widget Function()?

A fallback builder used when no case matches the current status.

final

hashCode → int

The hash code for this object.

no setter, inherited

key → Key?

Controls how one widget replaces another widget in the tree.

final, inherited

reactiveKey → Key

The key used to subscribe this widget to status updates.

final

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

createElement() → StatefulElement

Creates a StatefulElement to manage this widget's location in the tree.

inherited

createState() → State<ReactiveStatus<T>>

Creates the mutable state for this widget at a given location in the tree.

override

debugDescribeChildren() → List<DiagnosticsNode>

Returns a list of DiagnosticsNode objects describing this node's children.

inherited

debugFillProperties(DiagnosticPropertiesBuilder properties) → void

Add additional properties associated with the node.

inherited

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toDiagnosticsNode({String? name, DiagnosticsTreeStyle? style}) → DiagnosticsNode

Returns a debug representation of the object that is used by debugging tools and by DiagnosticsNode.toStringDeep.

inherited

toString({DiagnosticLevel minLevel = DiagnosticLevel.info}) → String

A string representation of this object.

inherited

toStringDeep({String prefixLineOne = '', String? prefixOtherLines, DiagnosticLevel minLevel = DiagnosticLevel.debug, int wrapWidth = 65}) → String

Returns a string representation of this node and its descendants.

inherited

toStringShallow({String joiner = ', ', DiagnosticLevel minLevel = DiagnosticLevel.debug}) → String

Returns a one-line detailed description of the object.

inherited

toStringShort() → String

A short, textual description of this widget.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited