55 lines
1.5 KiB
Dart
55 lines
1.5 KiB
Dart
import 'package:fl_clash/widgets/inherited.dart';
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import 'package:flutter/material.dart';
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class ScrollOverBuilder extends StatefulWidget {
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final Widget Function(bool isOver) builder;
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const ScrollOverBuilder({super.key, required this.builder});
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@override
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State<ScrollOverBuilder> createState() => _ScrollOverBuilderState();
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}
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class _ScrollOverBuilderState extends State<ScrollOverBuilder> {
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final isOverNotifier = ValueNotifier<bool>(false);
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@override
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void dispose() {
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isOverNotifier.dispose();
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super.dispose();
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}
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@override
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Widget build(BuildContext context) {
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return NotificationListener<ScrollMetricsNotification>(
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onNotification: (scrollNotification) {
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isOverNotifier.value = scrollNotification.metrics.maxScrollExtent > 0;
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return true;
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},
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child: ValueListenableBuilder<bool>(
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valueListenable: isOverNotifier,
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builder: (_, isOver, _) {
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return widget.builder(isOver);
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},
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),
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);
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}
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}
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class FloatingActionButtonExtendedBuilder extends StatelessWidget {
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final Widget Function(bool isExtend) builder;
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const FloatingActionButtonExtendedBuilder({super.key, required this.builder});
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@override
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Widget build(BuildContext context) {
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final isExtended =
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CommonScaffoldFabExtendedProvider.of(context)?.isExtended ?? false;
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return builder(isExtended);
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}
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}
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typedef StateWidgetBuilder<T> = Widget Function(T state);
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typedef StateAndChildWidgetBuilder<T> = Widget Function(T state, Widget? child);
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