ViewModelSubscriber<V extends ReduxViewModel> class
Transforms a stream of state objects found via StoreProvider into a stream of view models, and builds a Widget each time a distinctly new view model is emitted by that stream.
This class is designed to minimize the number of times its subtree is built. When a new state is emitted by Store.states, it's converted into a view model using the provided converter. If (And only if) that new instance is unequal to the previous one, the widget subtree is rebuilt using builder. Any state changes emitted by the Store that don't impact the view model used by a particular ViewModelSubscriber are ignored by it.
- Inheritance
-
- Object
- DiagnosticableTree
- Widget
- StatelessWidget
- ViewModelSubscriber
Constructors
-
ViewModelSubscriber({required ViewModelConverter<
V> converter, required ViewModelWidgetBuilder<V> builder, Key? key})
Properties
-
builder
→ ViewModelWidgetBuilder<
V> -
final
-
converter
→ ViewModelConverter<
V> -
final
- hashCode → int
-
The hash code for this object.
no setterinherited
- key → Key?
-
Controls how one widget replaces another widget in the tree.
finalinherited
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
Methods
-
build(
BuildContext context) → Widget -
Describes the part of the user interface represented by this widget.
override
-
createElement(
) → StatelessElement -
Creates a StatelessElement to manage this widget's location in the tree.
inherited
-
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