26 lines
798 B
Dart
26 lines
798 B
Dart
// Copyright 2020 Ben Hills and the project contributors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style license that can be
|
|
// found in the LICENSE file.
|
|
import 'package:flutter/material.dart';
|
|
|
|
class PlaceholderBuilder extends InheritedWidget {
|
|
final WidgetBuilder Function() builder;
|
|
final WidgetBuilder Function() errorBuilder;
|
|
|
|
const PlaceholderBuilder({
|
|
super.key,
|
|
required this.builder,
|
|
required this.errorBuilder,
|
|
required super.child,
|
|
});
|
|
|
|
static PlaceholderBuilder? of(BuildContext context) {
|
|
return context.dependOnInheritedWidgetOfExactType<PlaceholderBuilder>();
|
|
}
|
|
|
|
@override
|
|
bool updateShouldNotify(PlaceholderBuilder oldWidget) {
|
|
return builder != oldWidget.builder || errorBuilder != oldWidget.errorBuilder;
|
|
}
|
|
}
|