ZenConsumer<T extends ZenController> class
Widget that provides a ZenController to a subtree via composition.
Resolves the controller from the nearest ZenProvider ancestor, with
a fallback to global DI (Zen.put()). Fails fast — throws a clear error
if the controller is not found, rather than rendering nothing silently.
Reactivity
ZenConsumer is NOT reactive by itself. It resolves the controller once
and provides it to the builder. For reactive rebuilds, use ZenObserver
(for Rx<T> values) or ZenUpdater (for controller.update() calls)
inside the builder:
ZenConsumer<CartController>(
builder: (context, controller) => ZenObserver(
() => Text('\${controller.totalPrice.value}'),
),
)
Multi-Instance Safety
Because resolution uses context.controller<T>(), this widget is fully
safe with multiple simultaneous instances — each resolves from its own
nearest scope.
- Inheritance
-
- Object
- DiagnosticableTree
- Widget
- StatefulWidget
- ZenConsumer
Constructors
- ZenConsumer({Key? key, required Widget builder(BuildContext context, T dependency), String? tag})
-
const
Properties
- builder → Widget Function(BuildContext context, T dependency)
-
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
- tag → String?
-
final
Methods
-
createElement(
) → StatefulElement -
Creates a StatefulElement to manage this widget's location in the tree.
inherited
-
createState(
) → State< ZenConsumer< 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