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clragon/selective_provider.dart

Created July 11, 2022 18:17
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Allows to create Providers that depend on other Providers or their Properties
Raw
selective_provider.dart
import 'package:collection/collection.dart';
import 'package:flutter/material.dart';
import 'package:provider/provider.dart';
import 'package:provider/single_child_widget.dart';
typedef SelectiveProviderBuilder0<R> = R Function(BuildContext context);
typedef SelectiveProviderBuilder<T, R> = R Function(
BuildContext context,
T value,
);
typedef SelectiveProviderBuilder2<T, T2, R> = R Function(
BuildContext context,
T value,
T2 value2,
);
typedef SelectiveProviderBuilder3<T, T2, T3, R> = R Function(
BuildContext context,
T value,
T2 value2,
T3 value3,
);
typedef SelectiveProviderBuilder4<T, T2, T3, T4, R> = R Function(
BuildContext context,
T value,
T2 value2,
T3 value3,
T4 value4,
);
typedef SelectiveProviderBuilder5<T, T2, T3, T4, T5, R> = R Function(
BuildContext context,
T value,
T2 value2,
T3 value3,
T4 value4,
T5 value5,
);
typedef SelectiveProviderBuilder6<T, T2, T3, T4, T5, T6, R> = R Function(
BuildContext context,
T value,
T2 value2,
T3 value3,
T4 value4,
T5 value5,
T6 value6,
);
typedef SelectiveBuilder = List<dynamic>? Function(BuildContext context);
class SelectiveProvider0<R> extends SingleChildStatefulWidget {
final Widget? child;
final TransitionBuilder? builder;
final SelectiveProviderBuilder0<R> create;
final Dispose<R>? dispose;
final SelectiveProviderBuilder0<List<dynamic>>? selector;
final bool? notifier;
const SelectiveProvider0({
super.key,
this.child,
this.builder,
required this.create,
this.dispose,
this.selector,
this.notifier,
}) : super(child: child);
@override
State<SelectiveProvider0<R>> createState() => _SelectiveProvider0State<R>();
}
class _SelectiveProvider0State<R>
extends SingleChildState<SelectiveProvider0<R>> {
List<dynamic>? dependencies;
R? value;
@override
void didChangeDependencies() {
super.didChangeDependencies();
final List<dynamic>? conditions = widget.selector?.call(context);
final List<dynamic> values = [if (conditions != null) conditions];
if (!const DeepCollectionEquality().equals(dependencies, values)) {
if (value != null) {
widget.dispose?.call(context, value as R);
}
value = widget.create(context);
dependencies = values;
}
}
@override
void dispose() {
widget.dispose?.call(context, value as R);
super.dispose();
}
@override
Widget buildWithChild(BuildContext context, Widget? child) {
assert(
widget.builder != null || child != null,
'$runtimeType used outside of MultiProvider must specify a child',
);
return Provider.value(
value: value as R,
child: widget.builder != null
? Builder(
builder: (context) => widget.builder!(context, child),
)
: child!,
);
}
}
class SelectiveProvider<T, R> extends SelectiveProvider0<R> {
SelectiveProvider({
super.key,
super.child,
super.builder,
required SelectiveProviderBuilder<T, R> create,
super.dispose,
SelectiveProviderBuilder<T, List<dynamic>>? selector,
}) : super(
create: (context) => create(
context,
Provider.of<T>(context),
),
selector: (context) =>
(selector?.call(context, Provider.of<T>(context)) ?? [])
..add(Provider.of<T>(context)),
);
}
class SelectiveProvider2<T, T2, R> extends SelectiveProvider<T, R> {
SelectiveProvider2({
super.key,
super.child,
super.builder,
required SelectiveProviderBuilder2<T, T2, R> create,
super.dispose,
SelectiveProviderBuilder2<T, T2, List<dynamic>>? selector,
}) : super(
create: (context, value) => create(
context,
value,
Provider.of<T2>(context),
),
selector: (context, value) =>
(selector?.call(context, value, Provider.of<T2>(context)) ?? [])
..add(Provider.of<T2>(context)),
);
}
class SelectiveProvider3<T, T2, T3, R> extends SelectiveProvider2<T, T2, R> {
SelectiveProvider3({
super.key,
super.child,
super.builder,
required SelectiveProviderBuilder3<T, T2, T3, R> create,
super.dispose,
SelectiveProviderBuilder3<T, T2, T3, List<dynamic>>? selector,
}) : super(
create: (context, value, value2) => create(
context,
value,
value2,
Provider.of<T3>(context),
),
selector: (context, value, value2) => (selector?.call(
context, value, value2, Provider.of<T3>(context)) ??
[])
..add(Provider.of<T3>(context)),
);
}
class SelectiveProvider4<T, T2, T3, T4, R>
extends SelectiveProvider3<T, T2, T3, R> {
SelectiveProvider4({
super.key,
super.child,
super.builder,
required SelectiveProviderBuilder4<T, T2, T3, T4, R> create,
super.dispose,
SelectiveProviderBuilder4<T, T2, T3, T4, List<dynamic>>? selector,
}) : super(
create: (context, value, value2, value3) => create(
context,
value,
value2,
value3,
Provider.of<T4>(context),
),
selector: (context, value, value2, value3) => (selector?.call(
context, value, value2, value3, Provider.of<T4>(context)) ??
[])
..add(Provider.of<T4>(context)),
);
}
class SelectiveProvider5<T, T2, T3, T4, T5, R>
extends SelectiveProvider4<T, T2, T3, T4, R> {
SelectiveProvider5({
super.key,
super.child,
super.builder,
required SelectiveProviderBuilder5<T, T2, T3, T4, T5, R> create,
super.dispose,
SelectiveProviderBuilder5<T, T2, T3, T4, T5, List<dynamic>>? selector,
}) : super(
create: (context, value, value2, value3, value4) => create(
context,
value,
value2,
value3,
value4,
Provider.of<T5>(context),
),
selector: (context, value, value2, value3, value4) => (selector?.call(
context,
value,
value2,
value3,
value4,
Provider.of<T5>(context)) ??
[])
..add(Provider.of<T5>(context)),
);
}
class SelectiveProvider6<T, T2, T3, T4, T5, T6, R>
extends SelectiveProvider5<T, T2, T3, T4, T5, R> {
SelectiveProvider6({
super.key,
super.child,
super.builder,
required SelectiveProviderBuilder6<T, T2, T3, T4, T5, T6, R> create,
super.dispose,
SelectiveProviderBuilder6<T, T2, T3, T4, T5, T6, List<dynamic>>? selector,
}) : super(
create: (context, value, value2, value3, value4, value5) => create(
context,
value,
value2,
value3,
value4,
value5,
Provider.of<T6>(context),
),
selector: (context, value, value2, value3, value4, value5) =>
(selector?.call(context, value, value2, value3, value4, value5,
Provider.of<T6>(context)) ??
[])
..add(Provider.of<T6>(context)),
);
}
class SelectiveChangeNotifierProvider0<R extends ChangeNotifier?>
extends SelectiveProvider0<R> {
const SelectiveChangeNotifierProvider0({
super.key,
super.child,
super.builder,
required super.create,
super.dispose,
super.selector,
});
@override
State<SelectiveProvider0<R>> createState() =>
_SelectiveChangeNotifierProvider0<R>();
}
class _SelectiveChangeNotifierProvider0<R extends ChangeNotifier?>
extends _SelectiveProvider0State<R> {
@override
Widget buildWithChild(BuildContext context, Widget? child) {
assert(
widget.builder != null || child != null,
'$runtimeType used outside of MultiProvider must specify a child',
);
return ChangeNotifierProvider.value(
value: value as R,
child: widget.builder != null
? Builder(
builder: (context) => widget.builder!(context, child),
)
: child!,
);
}
}
class SelectiveChangeNotifierProvider<T, R extends ChangeNotifier?>
extends SelectiveChangeNotifierProvider0<R> {
SelectiveChangeNotifierProvider({
super.key,
super.child,
super.builder,
required SelectiveProviderBuilder<T, R> create,
super.dispose,
SelectiveProviderBuilder<T, List<dynamic>>? selector,
}) : super(
create: (context) => create(
context,
Provider.of<T>(context),
),
selector: (context) =>
(selector?.call(context, Provider.of<T>(context)) ?? [])
..add(Provider.of<T>(context)),
);
}
class SelectiveChangeNotifierProvider2<T, T2, R extends ChangeNotifier?>
extends SelectiveChangeNotifierProvider<T, R> {
SelectiveChangeNotifierProvider2({
super.key,
super.child,
super.builder,
required SelectiveProviderBuilder2<T, T2, R> create,
super.dispose,
SelectiveProviderBuilder2<T, T2, List<dynamic>>? selector,
}) : super(
create: (context, value) => create(
context,
value,
Provider.of<T2>(context),
),
selector: (context, value) =>
(selector?.call(context, value, Provider.of<T2>(context)) ?? [])
..add(Provider.of<T2>(context)),
);
}
class SelectiveChangeNotifierProvider3<T, T2, T3, R extends ChangeNotifier?>
extends SelectiveChangeNotifierProvider2<T, T2, R> {
SelectiveChangeNotifierProvider3({
super.key,
super.child,
super.builder,
required SelectiveProviderBuilder3<T, T2, T3, R> create,
super.dispose,
SelectiveProviderBuilder3<T, T2, T3, List<dynamic>>? selector,
}) : super(
create: (context, value, value2) => create(
context,
value,
value2,
Provider.of<T3>(context),
),
selector: (context, value, value2) => (selector?.call(
context, value, value2, Provider.of<T3>(context)) ??
[])
..add(Provider.of<T3>(context)),
);
}
class SelectiveChangeNotifierProvider4<T, T2, T3, T4, R extends ChangeNotifier?>
extends SelectiveChangeNotifierProvider3<T, T2, T3, R> {
SelectiveChangeNotifierProvider4({
super.key,
super.child,
super.builder,
required SelectiveProviderBuilder4<T, T2, T3, T4, R> create,
super.dispose,
SelectiveProviderBuilder4<T, T2, T3, T4, List<dynamic>>? selector,
}) : super(
create: (context, value, value2, value3) => create(
context,
value,
value2,
value3,
Provider.of<T4>(context),
),
selector: (context, value, value2, value3) => (selector?.call(
context, value, value2, value3, Provider.of<T4>(context)) ??
[])
..add(Provider.of<T4>(context)),
);
}
class SelectiveChangeNotifierProvider5<T, T2, T3, T4, T5,
R extends ChangeNotifier?>
extends SelectiveChangeNotifierProvider4<T, T2, T3, T4, R> {
SelectiveChangeNotifierProvider5({
super.key,
super.child,
super.builder,
required SelectiveProviderBuilder5<T, T2, T3, T4, T5, R> create,
super.dispose,
SelectiveProviderBuilder5<T, T2, T3, T4, T5, List<dynamic>>? selector,
}) : super(
create: (context, value, value2, value3, value4) => create(
context,
value,
value2,
value3,
value4,
Provider.of<T5>(context),
),
selector: (context, value, value2, value3, value4) => (selector?.call(
context,
value,
value2,
value3,
value4,
Provider.of<T5>(context)) ??
[])
..add(Provider.of<T5>(context)),
);
}
class SelectiveChangeNotifierProvider6<T, T2, T3, T4, T5, T6,
R extends ChangeNotifier?>
extends SelectiveChangeNotifierProvider5<T, T2, T3, T4, T5, R> {
SelectiveChangeNotifierProvider6({
super.key,
super.child,
super.builder,
required SelectiveProviderBuilder6<T, T2, T3, T4, T5, T6, R> create,
super.dispose,
SelectiveProviderBuilder6<T, T2, T3, T4, T5, T6, List<dynamic>>? selector,
}) : super(
create: (context, value, value2, value3, value4, value5) => create(
context,
value,
value2,
value3,
value4,
value5,
Provider.of<T6>(context),
),
selector: (context, value, value2, value3, value4, value5) =>
(selector?.call(context, value, value2, value3, value4, value5,
Provider.of<T6>(context)) ??
[])
..add(Provider.of<T6>(context)),
);
}
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