EntityProvider<T extends EntitySystem> class
An inherited widget that can provide entities to a section of the Widget tree.
Example:
class App extends StatelessWidget { @override Widget build(BuildContext context) { return MaterialApp( home: Scaffold( body: EntityProvider( system: system, child: EntityListWidget(), ), ); ); } }
class EntityListWidget extends StatelessWidget {
@override
Widget build(BuildContext context) {
final entities = EntityProvider.of(context).system.entities;
return Column(
children:
...entities.map((entity) {
return Text('Entity');
}),
,
);
}
}
This is typically used in conjunction with EntityWatcher or context.watchFilteredEntities to have a widget that rebuilds anytime the EntityProvider's entity list updates.
- Inheritance
-
- Object
- DiagnosticableTree
- Widget
- ProxyWidget
- InheritedWidget
- EntityProvider
Constructors
- EntityProvider({Key? key, required Widget child, required T system})
-
const
Properties
- child → Widget
-
The widget below this widget in the tree.
finalinherited
- 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
- system → T
-
final
Methods
-
createElement(
) → InheritedElement -
Inflates this configuration to a concrete instance.
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
-
updateShouldNotify(
covariant EntityProvider< EntitySystem> oldWidget) → bool -
Whether the framework should notify widgets that inherit from this widget.
override
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited
Static Methods
-
entities<
T extends EntitySystem> (BuildContext context) → BehaviorSubject< List< Entity> > -
of<
T extends EntitySystem> (BuildContext context) → EntityProvider< EntitySystem>