StateObserver<N extends StateNotifier, S> class
StateObserver rebuilds using builder function in response
to new states
.
An optional notifier can be passed directly.
An optional buildWhen can be implemented for more granular control over how often StateObserver rebuilds.
- Inheritance
-
- Object
- DiagnosticableTree
- Widget
- StatefulWidget
- StateObserver
Constructors
-
StateObserver({required WidgetBuilder<
S> builder, N? notifier, BuilderCondition<S> ? buildWhen, Key? key}) -
StateObserver rebuilds using builder function in response
to new
states
.const
Properties
-
builder
→ WidgetBuilder<
S> -
The function which will be invoked on each widget build.
final
-
buildWhen
→ BuilderCondition<
S> ? -
An optional function can be implemented for more granular control over
how often StateObserver rebuilds.
final
- hashCode → int
-
The hash code for this object.
no setterinherited
- key → Key?
-
Controls how one widget replaces another widget in the tree.
finalinherited
- notifier → N?
-
An optional StateNotifier can be passed directly.
final
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
Methods
-
createElement(
) → StatefulElement -
Creates a StatefulElement to manage this widget's location in the tree.
inherited
-
createState(
) → State< StatefulWidget> -
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}) → 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