104 lines
3.2 KiB
Dart
104 lines
3.2 KiB
Dart
import 'package:aves/model/settings/settings.dart';
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import 'package:aves/theme/icons.dart';
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import 'package:flutter/material.dart';
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import 'package:provider/provider.dart';
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class CrumbLine<T> extends StatefulWidget {
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final List<String> Function(BuildContext context) split;
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final T Function(BuildContext context, int index) combine;
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final void Function(T combined) onTap;
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const CrumbLine({
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super.key,
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required this.split,
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required this.combine,
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required this.onTap,
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});
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@override
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State<CrumbLine<T>> createState() => _CrumbLineState<T>();
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static double getPreferredHeight(TextScaler textScaler) => textScaler.scale(kToolbarHeight);
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}
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class _CrumbLineState<T> extends State<CrumbLine<T>> {
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final ScrollController _scrollController = ScrollController();
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@override
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void dispose() {
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_scrollController.dispose();
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super.dispose();
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}
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@override
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void didUpdateWidget(covariant CrumbLine<T> oldWidget) {
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super.didUpdateWidget(oldWidget);
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if (oldWidget.split(context).length < widget.split(context).length) {
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// scroll to show last crumb
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WidgetsBinding.instance.addPostFrameCallback((_) {
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final animate = context.read<Settings>().animate;
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final extent = _scrollController.position.maxScrollExtent;
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if (animate) {
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_scrollController.animateTo(
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extent,
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duration: const Duration(milliseconds: 500),
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curve: Curves.easeOutQuad,
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);
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} else {
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_scrollController.jumpTo(extent);
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}
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});
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}
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}
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@override
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Widget build(BuildContext context) {
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final parts = widget.split(context);
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final crumbColor = DefaultTextStyle.of(context).style.color;
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return ListView.builder(
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scrollDirection: Axis.horizontal,
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controller: _scrollController,
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padding: const EdgeInsets.symmetric(horizontal: 8),
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itemBuilder: (context, index) {
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Widget _buildText(String text) => Padding(
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padding: const EdgeInsets.symmetric(horizontal: 8),
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child: Text(text),
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);
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if (index >= parts.length) return const SizedBox();
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final text = parts[index];
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if (index == parts.length - 1) {
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return Center(
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child: DefaultTextStyle.merge(
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style: TextStyle(
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color: Theme.of(context).colorScheme.primary,
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),
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child: _buildText(text),
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),
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);
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}
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return GestureDetector(
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onTap: parts.isNotEmpty ? () => widget.onTap(widget.combine(context, index)) : null,
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child: Container(
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// use a `Container` with a dummy color to make it expand
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// so that we can also detect taps around the title `Text`
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color: Colors.transparent,
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child: Row(
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mainAxisSize: MainAxisSize.min,
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crossAxisAlignment: CrossAxisAlignment.center,
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children: [
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_buildText(text),
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Icon(
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AIcons.next,
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color: crumbColor,
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),
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],
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),
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),
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);
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},
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itemCount: parts.length,
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);
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}
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}
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