major refactor
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This commit is contained in:
331
lib/components/pages/loco_timeline/event_editor.dart
Normal file
331
lib/components/pages/loco_timeline/event_editor.dart
Normal file
@@ -0,0 +1,331 @@
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part of 'package:mileograph_flutter/components/pages/loco_timeline.dart';
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class _EventEditor extends StatelessWidget {
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const _EventEditor({
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required this.eventFields,
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required this.drafts,
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required this.onAddEvent,
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required this.onChange,
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required this.onSave,
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required this.onRemoveDraft,
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required this.isSaving,
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required this.canSave,
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});
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final List<EventField> eventFields;
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final List<_EventDraft> drafts;
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final VoidCallback onAddEvent;
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final VoidCallback onChange;
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final Future<void> Function() onSave;
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final void Function(int index) onRemoveDraft;
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final bool isSaving;
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final bool canSave;
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@override
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Widget build(BuildContext context) {
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return Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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Row(
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mainAxisAlignment: MainAxisAlignment.spaceBetween,
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children: [
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Text(
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'Add events',
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style: Theme.of(context).textTheme.titleMedium?.copyWith(
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fontWeight: FontWeight.w700,
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),
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),
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Row(
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children: [
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OutlinedButton.icon(
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onPressed: onAddEvent,
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icon: const Icon(Icons.add),
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label: const Text('New event'),
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),
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const SizedBox(width: 8),
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FilledButton.icon(
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onPressed: (!canSave || isSaving) ? null : onSave,
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icon: isSaving
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? const SizedBox(
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height: 14,
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width: 14,
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child: CircularProgressIndicator(strokeWidth: 2),
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)
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: const Icon(Icons.save),
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label: Text(isSaving ? 'Saving...' : 'Save all'),
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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(height: 12),
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if (drafts.isEmpty)
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const Text('No events yet. Add one to propose new values.')
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else
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...drafts.asMap().entries.map(
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(entry) {
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final idx = entry.key;
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final draft = entry.value;
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return Padding(
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padding: const EdgeInsets.only(bottom: 12.0),
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child: Card(
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child: Padding(
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padding: const EdgeInsets.all(12.0),
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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Row(
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children: [
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Text(
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'Event ${idx + 1}',
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style: Theme.of(context).textTheme.titleMedium,
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),
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const Spacer(),
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IconButton(
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tooltip: 'Remove',
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onPressed: () => onRemoveDraft(idx),
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icon: const Icon(Icons.delete_outline),
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),
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],
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),
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const SizedBox(height: 8),
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Row(
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children: [
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Expanded(
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child: TextField(
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controller: draft.dateController,
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onChanged: (_) => onChange(),
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decoration: const InputDecoration(
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labelText: 'Date (YYYY-MM-DD, MM/DD can be XX)',
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border: OutlineInputBorder(),
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),
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),
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),
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IconButton(
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tooltip: 'Pick date',
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onPressed: () async {
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final now = DateTime.now();
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final picked = await showDatePicker(
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context: context,
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initialDate: draft.date ?? now,
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firstDate: DateTime(1900),
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lastDate: DateTime(now.year + 10),
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);
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if (picked != null) {
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draft.date = picked;
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draft.dateController.text =
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DateFormat('yyyy-MM-dd').format(picked);
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onChange();
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}
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},
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icon: const Icon(Icons.calendar_month),
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),
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],
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),
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const SizedBox(height: 8),
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_FieldList(
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draft: draft,
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eventFields: eventFields,
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onChange: onChange,
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),
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const SizedBox(height: 12),
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TextField(
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controller: draft.detailsController,
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onChanged: (val) {
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draft.details = val;
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onChange();
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},
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decoration: const InputDecoration(
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labelText: 'Commit message / details',
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border: OutlineInputBorder(),
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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 _FieldList extends StatelessWidget {
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const _FieldList({
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required this.draft,
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required this.eventFields,
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required this.onChange,
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});
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final _EventDraft draft;
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final List<EventField> eventFields;
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final VoidCallback onChange;
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@override
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Widget build(BuildContext context) {
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final usedNames = draft.fields.map((f) => f.field.name).toSet();
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final availableFields =
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eventFields.where((f) => !usedNames.contains(f.name)).toList();
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return Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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Row(
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children: [
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Text(
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'Fields',
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style: Theme.of(context).textTheme.titleSmall,
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),
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const Spacer(),
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DropdownButton<EventField>(
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hint: const Text('Add field'),
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value: null,
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onChanged: (field) {
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if (field == null) return;
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draft.fields.add(_FieldEntry(field: field));
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onChange();
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},
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items: availableFields
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.map(
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(f) => DropdownMenuItem(
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value: f,
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child: Text(f.display),
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),
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)
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.toList(),
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),
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],
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),
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const SizedBox(height: 8),
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if (draft.fields.isEmpty)
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const Text('No fields added yet.')
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else
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...draft.fields.asMap().entries.map(
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(entry) {
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final idx = entry.key;
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final field = entry.value;
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return Padding(
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padding: const EdgeInsets.symmetric(vertical: 6.0),
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child: Row(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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Expanded(
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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Text(
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field.field.display,
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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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const SizedBox(height: 4),
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_FieldInput(
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field: field.field,
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value: field.value,
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onChanged: (val) {
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field.value = val;
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onChange();
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},
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),
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],
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),
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),
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IconButton(
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onPressed: () {
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draft.fields.removeAt(idx);
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onChange();
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},
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icon: const Icon(Icons.close),
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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 _FieldInput extends StatelessWidget {
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const _FieldInput({
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required this.field,
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required this.value,
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required this.onChanged,
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});
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final EventField field;
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final dynamic value;
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final ValueChanged<dynamic> onChanged;
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@override
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Widget build(BuildContext context) {
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if (field.enumValues != null && field.enumValues!.isNotEmpty) {
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final options = field.enumValues!;
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return DropdownButtonFormField<String>(
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value: value is String && options.contains(value) ? value : null,
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decoration: const InputDecoration(border: OutlineInputBorder()),
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items: options
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.map((v) => DropdownMenuItem<String>(value: v, child: Text(v)))
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.toList(),
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onChanged: (val) => onChanged(val),
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hint: const Text('Select value'),
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);
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}
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final type = field.type?.toLowerCase();
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if (type == 'bool' || type == 'boolean') {
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final bool? current =
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value is bool ? value : (value is String ? value == 'true' : null);
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return DropdownButtonFormField<bool>(
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value: current,
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decoration: const InputDecoration(border: OutlineInputBorder()),
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items: const [
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DropdownMenuItem(value: true, child: Text('Yes')),
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DropdownMenuItem(value: false, child: Text('No')),
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],
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onChanged: (val) => onChanged(val),
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hint: const Text('Select'),
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);
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}
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final isNumber = type == 'int' || type == 'integer';
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return TextFormField(
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initialValue: value?.toString(),
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onChanged: (val) {
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if (isNumber) {
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final parsed = int.tryParse(val);
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onChanged(parsed);
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} else {
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onChanged(val);
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}
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},
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decoration: const InputDecoration(
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border: OutlineInputBorder(),
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hintText: 'Enter value',
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),
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keyboardType: isNumber ? TextInputType.number : TextInputType.text,
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);
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}
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}
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class _EventDraft {
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DateTime? date;
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String details = '';
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final TextEditingController detailsController = TextEditingController();
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final TextEditingController dateController = TextEditingController();
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final List<_FieldEntry> fields = [];
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_EventDraft();
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}
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class _FieldEntry {
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final EventField field;
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dynamic value;
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_FieldEntry({required this.field});
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}
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700
lib/components/pages/loco_timeline/timeline_grid.dart
Normal file
700
lib/components/pages/loco_timeline/timeline_grid.dart
Normal file
@@ -0,0 +1,700 @@
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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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});
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final List<LocoAttrVersion> entries;
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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,
|
||||
child: Column(
|
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children: [
|
||||
SizedBox(
|
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height: axisHeight,
|
||||
child: Align(
|
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alignment: Alignment.centerLeft,
|
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child: Text(
|
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'Attribute',
|
||||
style: Theme.of(context).textTheme.labelLarge?.copyWith(
|
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fontWeight: FontWeight.w700,
|
||||
),
|
||||
),
|
||||
),
|
||||
),
|
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Expanded(
|
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child: Scrollbar(
|
||||
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) {
|
||||
final label = _formatAttrLabel(rows[index].key);
|
||||
return Container(
|
||||
alignment: Alignment.centerLeft,
|
||||
padding: const EdgeInsets.symmetric(
|
||||
horizontal: 10,
|
||||
),
|
||||
decoration: BoxDecoration(
|
||||
color: Theme.of(context)
|
||||
.colorScheme
|
||||
.surfaceContainerHighest,
|
||||
border: Border(
|
||||
bottom: BorderSide(
|
||||
color:
|
||||
Theme.of(context).colorScheme.outlineVariant,
|
||||
),
|
||||
),
|
||||
),
|
||||
child: Text(
|
||||
label,
|
||||
style: Theme.of(context)
|
||||
.textTheme
|
||||
.labelLarge
|
||||
?.copyWith(fontWeight: FontWeight.w700),
|
||||
),
|
||||
);
|
||||
},
|
||||
),
|
||||
),
|
||||
),
|
||||
],
|
||||
),
|
||||
),
|
||||
const SizedBox(width: 8),
|
||||
Expanded(
|
||||
child: Scrollbar(
|
||||
controller: _horizontalController,
|
||||
thumbVisibility: true,
|
||||
child: SingleChildScrollView(
|
||||
controller: _horizontalController,
|
||||
scrollDirection: Axis.horizontal,
|
||||
child: SizedBox(
|
||||
width: axisWidth,
|
||||
child: Column(
|
||||
crossAxisAlignment: CrossAxisAlignment.start,
|
||||
children: [
|
||||
_AxisRow(
|
||||
segments: axisSegments,
|
||||
totalWidth: axisWidth,
|
||||
endLabel: model.endLabel,
|
||||
),
|
||||
const SizedBox(height: 8),
|
||||
Expanded(
|
||||
child: ListView.builder(
|
||||
controller: _rightVerticalController,
|
||||
itemExtent: rowHeight,
|
||||
itemCount: rows.length,
|
||||
itemBuilder: (_, index) {
|
||||
final blocks = rows[index].value;
|
||||
return Padding(
|
||||
padding:
|
||||
const EdgeInsets.symmetric(vertical: 2.0),
|
||||
child: _AttrRow(
|
||||
rowHeight: rowHeight,
|
||||
blocks: blocks,
|
||||
model: model,
|
||||
scrollOffset: _scrollOffset,
|
||||
viewportWidth: axisWidth,
|
||||
),
|
||||
);
|
||||
},
|
||||
),
|
||||
),
|
||||
],
|
||||
),
|
||||
),
|
||||
),
|
||||
),
|
||||
),
|
||||
],
|
||||
),
|
||||
),
|
||||
],
|
||||
);
|
||||
}
|
||||
}
|
||||
|
||||
class _AxisRow extends StatelessWidget {
|
||||
const _AxisRow({
|
||||
required this.segments,
|
||||
required this.endLabel,
|
||||
required this.totalWidth,
|
||||
});
|
||||
|
||||
final List<_AxisSegment> segments;
|
||||
final String endLabel;
|
||||
final double totalWidth;
|
||||
|
||||
@override
|
||||
Widget build(BuildContext context) {
|
||||
final theme = Theme.of(context);
|
||||
const double axisHeight = 48;
|
||||
return SizedBox(
|
||||
width: totalWidth,
|
||||
height: axisHeight,
|
||||
child: Stack(
|
||||
children: [
|
||||
for (int i = 0; i < segments.length; i++) ...[
|
||||
Positioned(
|
||||
left: segments[i].offset,
|
||||
width: segments[i].width,
|
||||
top: 0,
|
||||
bottom: 0,
|
||||
child: Align(
|
||||
alignment: Alignment.centerLeft,
|
||||
child: Text(
|
||||
segments[i].label,
|
||||
overflow: TextOverflow.ellipsis,
|
||||
maxLines: 1,
|
||||
style: theme.textTheme.labelSmall,
|
||||
),
|
||||
),
|
||||
),
|
||||
],
|
||||
Positioned(
|
||||
right: 0,
|
||||
top: 0,
|
||||
bottom: 0,
|
||||
child: Align(
|
||||
alignment: Alignment.centerRight,
|
||||
child: Text(
|
||||
endLabel,
|
||||
overflow: TextOverflow.ellipsis,
|
||||
maxLines: 1,
|
||||
style: theme.textTheme.labelSmall,
|
||||
),
|
||||
),
|
||||
),
|
||||
],
|
||||
),
|
||||
);
|
||||
}
|
||||
}
|
||||
|
||||
class _AttrRow extends StatelessWidget {
|
||||
const _AttrRow({
|
||||
required this.rowHeight,
|
||||
required this.blocks,
|
||||
required this.model,
|
||||
required this.scrollOffset,
|
||||
required this.viewportWidth,
|
||||
});
|
||||
|
||||
final double rowHeight;
|
||||
final List<_ValueBlock> blocks;
|
||||
final _TimelineModel model;
|
||||
final double scrollOffset;
|
||||
final double viewportWidth;
|
||||
|
||||
@override
|
||||
Widget build(BuildContext context) {
|
||||
final width = math.max(model.axisTotalWidth, 120.0);
|
||||
final activeBlock = _activeBlock(blocks, scrollOffset);
|
||||
final double stickyWidth = activeBlock == null
|
||||
? 0
|
||||
: (activeBlock.right - scrollOffset).clamp(20.0, viewportWidth);
|
||||
|
||||
return SizedBox(
|
||||
width: width,
|
||||
height: rowHeight,
|
||||
child: Stack(
|
||||
clipBehavior: Clip.hardEdge,
|
||||
children: [
|
||||
for (final block in blocks)
|
||||
Positioned(
|
||||
left: block.left,
|
||||
width: block.width,
|
||||
top: 0,
|
||||
bottom: 0,
|
||||
child: _ValueBlockView(block: block),
|
||||
),
|
||||
if (activeBlock != null)
|
||||
Positioned(
|
||||
left: scrollOffset,
|
||||
width: stickyWidth,
|
||||
top: 0,
|
||||
bottom: 0,
|
||||
child: IgnorePointer(
|
||||
child: ClipRect(
|
||||
child: _ValueBlockView(
|
||||
block: activeBlock.copyWith(
|
||||
left: scrollOffset,
|
||||
width: stickyWidth,
|
||||
),
|
||||
clipLeftEdge: scrollOffset > activeBlock.left + 0.1,
|
||||
),
|
||||
),
|
||||
),
|
||||
),
|
||||
],
|
||||
),
|
||||
);
|
||||
}
|
||||
|
||||
_ValueBlock? _activeBlock(List<_ValueBlock> blocks, double offset) {
|
||||
for (final block in blocks) {
|
||||
if (offset >= block.left && offset < block.right) return block;
|
||||
}
|
||||
return null;
|
||||
}
|
||||
}
|
||||
|
||||
class _ValueBlockView extends StatelessWidget {
|
||||
const _ValueBlockView({
|
||||
required this.block,
|
||||
this.clipLeftEdge = false,
|
||||
});
|
||||
|
||||
final _ValueBlock block;
|
||||
final bool clipLeftEdge;
|
||||
|
||||
@override
|
||||
Widget build(BuildContext context) {
|
||||
final theme = Theme.of(context);
|
||||
final color = block.cell.color.withValues(alpha: 0.9);
|
||||
final textColor = ThemeData.estimateBrightnessForColor(color) ==
|
||||
Brightness.dark
|
||||
? Colors.white
|
||||
: Colors.black87;
|
||||
|
||||
final radius = BorderRadius.only(
|
||||
topLeft: Radius.circular(clipLeftEdge ? 0 : 12),
|
||||
bottomLeft: Radius.circular(clipLeftEdge ? 0 : 12),
|
||||
topRight: const Radius.circular(12),
|
||||
bottomRight: const Radius.circular(12),
|
||||
);
|
||||
|
||||
return ClipRRect(
|
||||
borderRadius: radius,
|
||||
child: Container(
|
||||
padding: const EdgeInsets.symmetric(horizontal: 10, vertical: 8),
|
||||
decoration: BoxDecoration(
|
||||
color: block.cell.value.isEmpty
|
||||
? theme.colorScheme.surfaceContainerHighest
|
||||
: color,
|
||||
borderRadius: BorderRadius.zero,
|
||||
border: Border.all(color: theme.colorScheme.outlineVariant),
|
||||
),
|
||||
child: block.cell.value.isEmpty
|
||||
? const SizedBox.shrink()
|
||||
: FittedBox(
|
||||
alignment: Alignment.topLeft,
|
||||
fit: BoxFit.scaleDown,
|
||||
child: ConstrainedBox(
|
||||
constraints: const BoxConstraints(minWidth: 1, minHeight: 1),
|
||||
child: Column(
|
||||
crossAxisAlignment: CrossAxisAlignment.start,
|
||||
mainAxisAlignment: MainAxisAlignment.center,
|
||||
children: [
|
||||
Text(
|
||||
block.cell.value,
|
||||
maxLines: 1,
|
||||
overflow: TextOverflow.ellipsis,
|
||||
style: theme.textTheme.bodyMedium?.copyWith(
|
||||
fontWeight: FontWeight.w700,
|
||||
color: textColor,
|
||||
) ??
|
||||
TextStyle(
|
||||
fontWeight: FontWeight.w700,
|
||||
color: textColor,
|
||||
),
|
||||
),
|
||||
const SizedBox(height: 4),
|
||||
Text(
|
||||
block.cell.rangeLabel,
|
||||
maxLines: 1,
|
||||
overflow: TextOverflow.ellipsis,
|
||||
style: theme.textTheme.labelSmall?.copyWith(
|
||||
color: textColor.withValues(alpha: 0.9),
|
||||
) ??
|
||||
TextStyle(color: textColor.withValues(alpha: 0.9)),
|
||||
),
|
||||
],
|
||||
),
|
||||
),
|
||||
),
|
||||
),
|
||||
);
|
||||
}
|
||||
}
|
||||
|
||||
String? _formatDate(DateTime? date) {
|
||||
if (date == null) return null;
|
||||
return _dateFormat.format(date);
|
||||
}
|
||||
|
||||
String _formatAttrLabel(String code) {
|
||||
if (code.isEmpty) return 'Attribute';
|
||||
final parts = code.split('_').where((p) => p.isNotEmpty).toList();
|
||||
if (parts.isEmpty) return code;
|
||||
return parts
|
||||
.map((part) => part.length == 1
|
||||
? part.toUpperCase()
|
||||
: part[0].toUpperCase() + part.substring(1))
|
||||
.join(' ');
|
||||
}
|
||||
|
||||
DateTime? _parseDateString(String? value) {
|
||||
if (value == null || value.isEmpty) return null;
|
||||
return DateTime.tryParse(value);
|
||||
}
|
||||
|
||||
DateTime? _effectiveStart(LocoAttrVersion entry) {
|
||||
return entry.validFrom ??
|
||||
_parseDateString(entry.maskedValidFrom) ??
|
||||
entry.txnFrom;
|
||||
}
|
||||
|
||||
DateTime _safeEnd(DateTime start, DateTime? end) {
|
||||
if (end == null || !end.isAfter(start)) {
|
||||
return start.add(const Duration(days: 1));
|
||||
}
|
||||
return end;
|
||||
}
|
||||
|
||||
class _TimelineModel {
|
||||
final List<_AxisSegment> axisSegments;
|
||||
final Map<String, List<_ValueBlock>> attrRows;
|
||||
final String endLabel;
|
||||
final List<DateTime> boundaries;
|
||||
final double axisTotalWidth;
|
||||
|
||||
_TimelineModel({
|
||||
required this.axisSegments,
|
||||
required this.attrRows,
|
||||
required this.endLabel,
|
||||
required this.boundaries,
|
||||
required this.axisTotalWidth,
|
||||
});
|
||||
|
||||
factory _TimelineModel.fromEntries(List<LocoAttrVersion> entries) {
|
||||
final grouped = <String, List<LocoAttrVersion>>{};
|
||||
for (final entry in entries) {
|
||||
grouped.putIfAbsent(entry.attrCode, () => []).add(entry);
|
||||
}
|
||||
final now = DateTime.now();
|
||||
DateTime? minStart;
|
||||
DateTime? maxEnd;
|
||||
final attrSegments = <String, List<_ValueSegment>>{};
|
||||
|
||||
grouped.forEach((attr, items) {
|
||||
items.sort(
|
||||
(a, b) => (_effectiveStart(a) ?? now)
|
||||
.compareTo(_effectiveStart(b) ?? now),
|
||||
);
|
||||
final segments = <_ValueSegment>[];
|
||||
for (int i = 0; i < items.length; i++) {
|
||||
final entry = items[i];
|
||||
final start = _effectiveStart(entry) ?? now;
|
||||
final nextStart = i < items.length - 1
|
||||
? _effectiveStart(items[i + 1])
|
||||
: null;
|
||||
final rawEnd = entry.validTo ?? nextStart ?? now;
|
||||
final end = _safeEnd(start, rawEnd);
|
||||
if (segments.isNotEmpty && segments.last.value == entry.valueLabel) {
|
||||
final last = segments.removeLast();
|
||||
segments.add(
|
||||
last.copyWith(
|
||||
end: end.isAfter(last.end) ? end : last.end,
|
||||
),
|
||||
);
|
||||
} else {
|
||||
segments.add(
|
||||
_ValueSegment(
|
||||
start: start,
|
||||
end: end,
|
||||
value: entry.valueLabel,
|
||||
entry: entry,
|
||||
),
|
||||
);
|
||||
}
|
||||
minStart = minStart == null || start.isBefore(minStart!)
|
||||
? start
|
||||
: minStart;
|
||||
maxEnd = maxEnd == null || end.isAfter(maxEnd!) ? end : maxEnd;
|
||||
}
|
||||
attrSegments[attr] = segments;
|
||||
});
|
||||
|
||||
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),
|
||||
),
|
||||
);
|
||||
}
|
||||
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;
|
||||
|
||||
const _ValueBlock({
|
||||
required this.left,
|
||||
required this.width,
|
||||
required this.cell,
|
||||
});
|
||||
|
||||
double get right => left + width;
|
||||
|
||||
_ValueBlock copyWith({
|
||||
double? left,
|
||||
double? width,
|
||||
_RowCell? cell,
|
||||
}) {
|
||||
return _ValueBlock(
|
||||
left: left ?? this.left,
|
||||
width: width ?? this.width,
|
||||
cell: cell ?? this.cell,
|
||||
);
|
||||
}
|
||||
}
|
||||
|
||||
Color _colorForValue(String value) {
|
||||
final hue = (value.hashCode % 360).toDouble();
|
||||
final hsl = HSLColor.fromAHSL(1, hue, 0.55, 0.55);
|
||||
return hsl.toColor();
|
||||
}
|
||||
Reference in New Issue
Block a user