789 lines
24 KiB
Dart
789 lines
24 KiB
Dart
part of 'package:mileograph_flutter/components/pages/loco_timeline.dart';
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final DateFormat _dateFormat = DateFormat('yyyy-MM-dd');
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class _TimelineGrid extends StatefulWidget {
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const _TimelineGrid({
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required this.entries,
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this.onEditEntry,
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this.onDeleteEntry,
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});
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final List<LocoAttrVersion> entries;
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final void Function(LocoAttrVersion entry)? onEditEntry;
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final void Function(LocoAttrVersion entry)? onDeleteEntry;
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@override
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State<_TimelineGrid> createState() => _TimelineGridState();
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}
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class _TimelineGridState extends State<_TimelineGrid> {
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final ScrollController _horizontalController = ScrollController();
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final ScrollController _rightVerticalController = ScrollController();
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final ScrollController _leftVerticalController = ScrollController();
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bool _isSyncingScroll = false;
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double _scrollOffset = 0;
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@override
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void initState() {
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super.initState();
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_rightVerticalController.addListener(_syncVerticalScroll);
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_horizontalController.addListener(_onHorizontalScroll);
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}
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@override
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void dispose() {
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_rightVerticalController.removeListener(_syncVerticalScroll);
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_horizontalController.removeListener(_onHorizontalScroll);
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_horizontalController.dispose();
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_rightVerticalController.dispose();
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_leftVerticalController.dispose();
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super.dispose();
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}
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void _syncVerticalScroll() {
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if (_isSyncingScroll) return;
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if (!_leftVerticalController.hasClients ||
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!_rightVerticalController.hasClients) {
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return;
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}
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_isSyncingScroll = true;
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_leftVerticalController.jumpTo(
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_rightVerticalController.offset.clamp(
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0.0,
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_leftVerticalController.position.maxScrollExtent,
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),
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);
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_isSyncingScroll = false;
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}
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void _onHorizontalScroll() {
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if (!mounted) return;
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setState(() {
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_scrollOffset = _horizontalController.offset;
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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 filteredEntries = widget.entries.where((e) {
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final code = e.attrCode.toLowerCase();
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return !{
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'operational',
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'gettable',
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'build_prec',
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'build_year',
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'build_month',
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'build_day',
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}.contains(code);
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}).toList();
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final model = _TimelineModel.fromEntries(filteredEntries);
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final axisSegments = model.axisSegments;
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const labelWidth = 110.0;
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const rowHeight = 52.0;
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const double axisHeight = 48;
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final rows = model.attrRows.entries.toList();
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final totalRowsHeight = rows.length * rowHeight;
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final axisWidth = math.max(model.axisTotalWidth, 120.0);
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final double viewHeight = totalRowsHeight + axisHeight + 8;
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return Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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mainAxisSize: MainAxisSize.min,
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children: [
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SizedBox(
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height: viewHeight,
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child: Row(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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SizedBox(
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width: labelWidth,
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child: Column(
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children: [
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SizedBox(
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height: axisHeight,
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child: Align(
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alignment: Alignment.centerLeft,
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child: Text(
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'Attribute',
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style: Theme.of(context).textTheme.labelLarge?.copyWith(
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fontWeight: FontWeight.w700,
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),
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),
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),
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),
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Expanded(
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child: Scrollbar(
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controller: _leftVerticalController,
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thumbVisibility: true,
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child: ListView.builder(
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controller: _leftVerticalController,
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physics: const NeverScrollableScrollPhysics(),
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itemExtent: rowHeight,
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itemCount: rows.length,
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itemBuilder: (_, index) {
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final label = _formatAttrLabel(rows[index].key);
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return Container(
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alignment: Alignment.centerLeft,
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padding: const EdgeInsets.symmetric(
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horizontal: 10,
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),
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decoration: BoxDecoration(
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color: Theme.of(context)
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.colorScheme
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.surfaceContainerHighest,
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border: Border(
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bottom: BorderSide(
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color:
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Theme.of(context).colorScheme.outlineVariant,
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),
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),
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),
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child: Text(
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label,
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style: Theme.of(context)
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.textTheme
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.labelLarge
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?.copyWith(fontWeight: FontWeight.w700),
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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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],
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),
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),
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const SizedBox(width: 8),
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Expanded(
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child: Scrollbar(
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controller: _horizontalController,
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thumbVisibility: true,
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child: SingleChildScrollView(
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controller: _horizontalController,
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scrollDirection: Axis.horizontal,
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child: SizedBox(
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width: axisWidth,
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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_AxisRow(
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segments: axisSegments,
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totalWidth: axisWidth,
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endLabel: model.endLabel,
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),
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const SizedBox(height: 8),
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Expanded(
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child: ListView.builder(
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controller: _rightVerticalController,
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itemExtent: rowHeight,
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itemCount: rows.length,
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itemBuilder: (_, index) {
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final blocks = rows[index].value;
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return Padding(
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padding:
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const EdgeInsets.symmetric(vertical: 2.0),
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child: _AttrRow(
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rowHeight: rowHeight,
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blocks: blocks,
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model: model,
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scrollOffset: _scrollOffset,
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viewportWidth: axisWidth,
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onEditEntry: widget.onEditEntry,
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onDeleteEntry: widget.onDeleteEntry,
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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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),
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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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),
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],
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);
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}
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}
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class _AxisRow extends StatelessWidget {
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const _AxisRow({
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required this.segments,
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required this.endLabel,
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required this.totalWidth,
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});
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final List<_AxisSegment> segments;
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final String endLabel;
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final double totalWidth;
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@override
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Widget build(BuildContext context) {
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final theme = Theme.of(context);
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const double axisHeight = 48;
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return SizedBox(
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width: totalWidth,
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height: axisHeight,
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child: Stack(
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children: [
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for (int i = 0; i < segments.length; i++) ...[
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Positioned(
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left: segments[i].offset,
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width: segments[i].width,
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top: 0,
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bottom: 0,
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child: Align(
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alignment: Alignment.centerLeft,
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child: Text(
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segments[i].label,
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overflow: TextOverflow.ellipsis,
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maxLines: 1,
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style: theme.textTheme.labelSmall,
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),
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),
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),
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],
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Positioned(
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right: 0,
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top: 0,
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bottom: 0,
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child: Align(
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alignment: Alignment.centerRight,
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child: Text(
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endLabel,
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overflow: TextOverflow.ellipsis,
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maxLines: 1,
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style: theme.textTheme.labelSmall,
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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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}
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}
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class _AttrRow extends StatelessWidget {
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const _AttrRow({
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required this.rowHeight,
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required this.blocks,
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required this.model,
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required this.scrollOffset,
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required this.viewportWidth,
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this.onEditEntry,
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this.onDeleteEntry,
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});
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final double rowHeight;
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final List<_ValueBlock> blocks;
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final _TimelineModel model;
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final double scrollOffset;
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final double viewportWidth;
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final void Function(LocoAttrVersion entry)? onEditEntry;
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final void Function(LocoAttrVersion entry)? onDeleteEntry;
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@override
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Widget build(BuildContext context) {
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final width = math.max(model.axisTotalWidth, 120.0);
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final activeBlock = _activeBlock(blocks, scrollOffset);
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final double stickyWidth = activeBlock == null
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? 0
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: (activeBlock.right - scrollOffset).clamp(20.0, viewportWidth);
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return SizedBox(
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width: width,
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height: rowHeight,
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child: Stack(
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clipBehavior: Clip.hardEdge,
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children: [
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for (final block in blocks)
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Positioned(
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left: block.left,
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width: block.width,
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top: 0,
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bottom: 0,
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child: _ValueBlockMenu(
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block: block,
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onEditEntry: onEditEntry,
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onDeleteEntry: onDeleteEntry,
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),
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),
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if (activeBlock != null)
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Positioned(
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left: scrollOffset,
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width: stickyWidth,
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top: 0,
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bottom: 0,
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child: IgnorePointer(
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child: ClipRect(
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child: _ValueBlockView(
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block: activeBlock.copyWith(
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left: scrollOffset,
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width: stickyWidth,
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),
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clipLeftEdge: scrollOffset > activeBlock.left + 0.1,
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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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);
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}
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_ValueBlock? _activeBlock(List<_ValueBlock> blocks, double offset) {
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for (final block in blocks) {
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if (offset >= block.left && offset < block.right) return block;
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}
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return null;
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}
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}
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class _ValueBlockView extends StatelessWidget {
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const _ValueBlockView({
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required this.block,
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this.clipLeftEdge = false,
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});
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final _ValueBlock block;
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final bool clipLeftEdge;
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@override
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Widget build(BuildContext context) {
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final theme = Theme.of(context);
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final color = block.cell.color.withValues(alpha: 0.9);
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final textColor = ThemeData.estimateBrightnessForColor(color) ==
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Brightness.dark
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? Colors.white
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: Colors.black87;
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final radius = BorderRadius.only(
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topLeft: Radius.circular(clipLeftEdge ? 0 : 12),
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bottomLeft: Radius.circular(clipLeftEdge ? 0 : 12),
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topRight: const Radius.circular(12),
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bottomRight: const Radius.circular(12),
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);
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return ClipRRect(
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borderRadius: radius,
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child: Container(
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padding: const EdgeInsets.symmetric(horizontal: 10, vertical: 8),
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decoration: BoxDecoration(
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color: block.cell.value.isEmpty
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? theme.colorScheme.surfaceContainerHighest
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: color,
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borderRadius: BorderRadius.zero,
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border: Border.all(color: theme.colorScheme.outlineVariant),
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),
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child: block.cell.value.isEmpty
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? const SizedBox.shrink()
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: FittedBox(
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alignment: Alignment.topLeft,
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fit: BoxFit.scaleDown,
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child: ConstrainedBox(
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constraints: const BoxConstraints(minWidth: 1, minHeight: 1),
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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mainAxisAlignment: MainAxisAlignment.center,
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children: [
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Text(
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block.cell.value,
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maxLines: 1,
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overflow: TextOverflow.ellipsis,
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style: theme.textTheme.bodyMedium?.copyWith(
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fontWeight: FontWeight.w700,
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color: textColor,
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) ??
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TextStyle(
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fontWeight: FontWeight.w700,
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color: textColor,
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),
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),
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const SizedBox(height: 4),
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Text(
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block.cell.rangeLabel,
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maxLines: 1,
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overflow: TextOverflow.ellipsis,
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style: theme.textTheme.labelSmall?.copyWith(
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color: textColor.withValues(alpha: 0.9),
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) ??
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TextStyle(color: textColor.withValues(alpha: 0.9)),
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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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);
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}
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}
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enum _TimelineBlockAction { edit, delete }
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class _ValueBlockMenu extends StatelessWidget {
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const _ValueBlockMenu({
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required this.block,
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this.onEditEntry,
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this.onDeleteEntry,
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});
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final _ValueBlock block;
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final void Function(LocoAttrVersion entry)? onEditEntry;
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final void Function(LocoAttrVersion entry)? onDeleteEntry;
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bool get _hasActions => onEditEntry != null || onDeleteEntry != null;
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@override
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Widget build(BuildContext context) {
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if (!_hasActions || block.entry == null) {
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return _ValueBlockView(block: block);
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}
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Future<void> showContextMenuAt(Offset globalPosition) async {
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final overlay = Overlay.of(context);
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final renderBox = overlay.context.findRenderObject() as RenderBox?;
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if (renderBox == null) return;
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// Translate from global screen coordinates into the overlay's local space
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// so the menu appears where the gesture happened.
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final localPosition = renderBox.globalToLocal(globalPosition);
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final position = RelativeRect.fromRect(
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Rect.fromLTWH(localPosition.dx, localPosition.dy, 1, 1),
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Offset.zero & renderBox.size,
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);
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final action = await showMenu<_TimelineBlockAction>(
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context: context,
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position: position,
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items: [
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if (onEditEntry != null)
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const PopupMenuItem(
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value: _TimelineBlockAction.edit,
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child: Text('Edit'),
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),
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if (onDeleteEntry != null)
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const PopupMenuItem(
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value: _TimelineBlockAction.delete,
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child: Text('Delete'),
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),
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],
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);
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final entry = block.entry;
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if (action == null || entry == null) return;
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switch (action) {
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case _TimelineBlockAction.edit:
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onEditEntry?.call(entry);
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break;
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case _TimelineBlockAction.delete:
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onDeleteEntry?.call(entry);
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break;
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}
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}
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return GestureDetector(
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behavior: HitTestBehavior.opaque,
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onLongPressStart: (details) async {
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if (defaultTargetPlatform == TargetPlatform.android) {
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HapticFeedback.lightImpact();
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}
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await showContextMenuAt(details.globalPosition);
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},
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onSecondaryTapDown: (details) async {
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await showContextMenuAt(details.globalPosition);
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},
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child: _ValueBlockView(block: block),
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);
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}
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}
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String? _formatDate(DateTime? date) {
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if (date == null) return null;
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return _dateFormat.format(date);
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}
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String _formatAttrLabel(String code) {
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if (code.isEmpty) return 'Attribute';
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final parts = code.split('_').where((p) => p.isNotEmpty).toList();
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if (parts.isEmpty) return code;
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return parts
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.map((part) => part.length == 1
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? part.toUpperCase()
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: part[0].toUpperCase() + part.substring(1))
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.join(' ');
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}
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DateTime? _parseDateString(String? value) {
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if (value == null || value.isEmpty) return null;
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return DateTime.tryParse(value);
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}
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|
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DateTime? _effectiveStart(LocoAttrVersion entry) {
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return entry.validFrom ??
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_parseDateString(entry.maskedValidFrom) ??
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entry.txnFrom;
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}
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DateTime _safeEnd(DateTime start, DateTime? end) {
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if (end == null || !end.isAfter(start)) {
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return start.add(const Duration(days: 1));
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}
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return end;
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}
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|
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class _TimelineModel {
|
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final List<_AxisSegment> axisSegments;
|
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final Map<String, List<_ValueBlock>> attrRows;
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final String endLabel;
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final List<DateTime> boundaries;
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final double axisTotalWidth;
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_TimelineModel({
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required this.axisSegments,
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required this.attrRows,
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required this.endLabel,
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required this.boundaries,
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required this.axisTotalWidth,
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});
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|
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factory _TimelineModel.fromEntries(List<LocoAttrVersion> entries) {
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final grouped = <String, List<LocoAttrVersion>>{};
|
|
for (final entry in entries) {
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grouped.putIfAbsent(entry.attrCode, () => []).add(entry);
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}
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final now = DateTime.now();
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DateTime? minStart;
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DateTime? maxEnd;
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final attrSegments = <String, List<_ValueSegment>>{};
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grouped.forEach((attr, items) {
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items.sort(
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(a, b) => (_effectiveStart(a) ?? now)
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.compareTo(_effectiveStart(b) ?? now),
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);
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final segments = <_ValueSegment>[];
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for (int i = 0; i < items.length; i++) {
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final entry = items[i];
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final start = _effectiveStart(entry) ?? now;
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final nextStart = i < items.length - 1
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? _effectiveStart(items[i + 1])
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: null;
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final rawEnd = entry.validTo ?? nextStart ?? now;
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final end = _safeEnd(start, rawEnd);
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segments.add(
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_ValueSegment(
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start: start,
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end: end,
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value: entry.valueLabel,
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entry: entry,
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),
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);
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minStart = minStart == null || start.isBefore(minStart!)
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? start
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: minStart;
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maxEnd = maxEnd == null || end.isAfter(maxEnd!) ? end : maxEnd;
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}
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attrSegments[attr] = segments;
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});
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|
|
minStart ??= now.subtract(const Duration(days: 1));
|
|
final effectiveMaxEnd = maxEnd ?? now;
|
|
|
|
final boundaryDates = <DateTime>{};
|
|
for (final segments in attrSegments.values) {
|
|
for (final seg in segments) {
|
|
boundaryDates.add(seg.start);
|
|
boundaryDates.add(seg.end);
|
|
}
|
|
}
|
|
boundaryDates.add(effectiveMaxEnd);
|
|
var boundaries = boundaryDates.toList()..sort();
|
|
if (boundaries.length < 2) {
|
|
boundaries = [minStart!, effectiveMaxEnd];
|
|
}
|
|
|
|
final axisSegments = <_AxisSegment>[];
|
|
const double yearWidth = 240.0;
|
|
for (int i = 0; i < boundaries.length - 1; i++) {
|
|
final start = boundaries[i];
|
|
final end = boundaries[i + 1];
|
|
const width = yearWidth;
|
|
final double offset = axisSegments.isEmpty
|
|
? 0.0
|
|
: axisSegments.last.offset + axisSegments.last.width;
|
|
axisSegments.add(
|
|
_AxisSegment(
|
|
start: start,
|
|
end: end,
|
|
width: width,
|
|
offset: offset,
|
|
label: _formatDate(start) ?? '',
|
|
),
|
|
);
|
|
}
|
|
final axisTotalWidth =
|
|
axisSegments.fold<double>(0, (sum, seg) => sum + seg.width);
|
|
|
|
final attrRows = <String, List<_ValueBlock>>{};
|
|
for (final entry in attrSegments.entries) {
|
|
final blocks = <_ValueBlock>[];
|
|
for (final seg in entry.value) {
|
|
final left = _positionForDate(seg.start, boundaries, axisSegments);
|
|
final right = _positionForDate(seg.end, boundaries, axisSegments);
|
|
final span = right - left;
|
|
final width = span < 2.0 ? 2.0 : span;
|
|
blocks.add(
|
|
_ValueBlock(
|
|
left: left,
|
|
width: width,
|
|
cell: _RowCell.fromSegment(seg),
|
|
entry: seg.entry,
|
|
),
|
|
);
|
|
}
|
|
attrRows[entry.key] = blocks;
|
|
}
|
|
|
|
final endLabel = _formatDate(effectiveMaxEnd) ?? 'Now';
|
|
return _TimelineModel(
|
|
axisSegments: axisSegments,
|
|
attrRows: attrRows,
|
|
endLabel: endLabel,
|
|
boundaries: boundaries,
|
|
axisTotalWidth: axisTotalWidth,
|
|
);
|
|
}
|
|
|
|
static double _positionForDate(
|
|
DateTime date,
|
|
List<DateTime> boundaries,
|
|
List<_AxisSegment> segments,
|
|
) {
|
|
for (int i = 0; i < boundaries.length - 1; i++) {
|
|
final start = boundaries[i];
|
|
final end = boundaries[i + 1];
|
|
if (!date.isAfter(end)) {
|
|
final seg = segments[i];
|
|
final span = end.difference(start).inMilliseconds;
|
|
final elapsed = date.difference(start).inMilliseconds.clamp(0, span);
|
|
if (span <= 0) return seg.offset;
|
|
final fraction = elapsed / span;
|
|
return seg.offset + (seg.width * fraction);
|
|
}
|
|
}
|
|
return segments.isNotEmpty
|
|
? segments.last.offset + segments.last.width
|
|
: 0.0;
|
|
}
|
|
}
|
|
|
|
class _AxisSegment {
|
|
final DateTime start;
|
|
final DateTime end;
|
|
final double width;
|
|
final double offset;
|
|
final String label;
|
|
|
|
_AxisSegment({
|
|
required this.start,
|
|
required this.end,
|
|
required this.width,
|
|
required this.offset,
|
|
required this.label,
|
|
});
|
|
}
|
|
|
|
class _ValueSegment {
|
|
final DateTime start;
|
|
final DateTime end;
|
|
final String value;
|
|
final LocoAttrVersion? entry;
|
|
|
|
_ValueSegment({
|
|
required this.start,
|
|
required this.end,
|
|
required this.value,
|
|
this.entry,
|
|
});
|
|
|
|
bool overlaps(DateTime s, DateTime e) {
|
|
return start.isBefore(e) && end.isAfter(s);
|
|
}
|
|
|
|
_ValueSegment copyWith({DateTime? start, DateTime? end, String? value}) {
|
|
return _ValueSegment(
|
|
start: start ?? this.start,
|
|
end: end ?? this.end,
|
|
value: value ?? this.value,
|
|
entry: entry,
|
|
);
|
|
}
|
|
}
|
|
|
|
class _RowCell {
|
|
final String value;
|
|
final String rangeLabel;
|
|
final Color color;
|
|
|
|
const _RowCell({
|
|
required this.value,
|
|
required this.rangeLabel,
|
|
required this.color,
|
|
});
|
|
|
|
factory _RowCell.fromSegment(_ValueSegment seg) {
|
|
if (seg.value.isEmpty) {
|
|
return const _RowCell(
|
|
value: '',
|
|
rangeLabel: '',
|
|
color: Colors.transparent,
|
|
);
|
|
}
|
|
final displayStart = _formatDate(seg.start) ?? '';
|
|
return _RowCell(
|
|
value: seg.value,
|
|
rangeLabel: displayStart,
|
|
color: _colorForValue(seg.value),
|
|
);
|
|
}
|
|
}
|
|
|
|
class _ValueBlock {
|
|
final double left;
|
|
final double width;
|
|
final _RowCell cell;
|
|
final LocoAttrVersion? entry;
|
|
|
|
const _ValueBlock({
|
|
required this.left,
|
|
required this.width,
|
|
required this.cell,
|
|
required this.entry,
|
|
});
|
|
|
|
double get right => left + width;
|
|
|
|
_ValueBlock copyWith({
|
|
double? left,
|
|
double? width,
|
|
_RowCell? cell,
|
|
LocoAttrVersion? entry,
|
|
}) {
|
|
return _ValueBlock(
|
|
left: left ?? this.left,
|
|
width: width ?? this.width,
|
|
cell: cell ?? this.cell,
|
|
entry: entry ?? this.entry,
|
|
);
|
|
}
|
|
}
|
|
|
|
Color _colorForValue(String value) {
|
|
final hue = (value.hashCode % 360).toDouble();
|
|
final hsl = HSLColor.fromAHSL(1, hue, 0.55, 0.55);
|
|
return hsl.toColor();
|
|
}
|