edde746
352b88109b
Introduces shared seams for paginated views, D-pad reorder, media control routing, async singletons and the device method channel, then points the open-coded copies at them. Also removes unused models and duplicated provider/server plumbing, folds the twice-implemented artifact store in the server, and factors the repeated Flutter toolchain prologue in CI into a composite action.
94 lines
2.9 KiB
Dart
94 lines
2.9 KiB
Dart
import 'dart:async';
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import 'package:flutter/material.dart';
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import '../../../utils/scroll_utils.dart';
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import '../../../widgets/overlay_sheet.dart';
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import 'sheet_column_header.dart';
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/// Per-row handle handed to [SheetSelectionColumn.itemBuilder].
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abstract class SheetSelectionColumnScope {
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/// Key for the row at [index]. Only the first row is keyed, so the one-time
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/// initial scroll can measure a real item height.
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Key? keyFor(int index);
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/// Runs an async selection: re-entrant taps are ignored while one is in
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/// flight, a progress bar is shown meanwhile, and the sheet is closed once
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/// [action] completes.
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void runExclusive(Future<void> Function() action);
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}
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/// Shared scaffold for the selectable columns inside the video control sheets:
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/// an optional header, a one-shot scroll to the selected row, the async
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/// selection guard, the scrolling list, and an optional footer.
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class SheetSelectionColumn extends StatefulWidget {
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/// Header text, or null to omit the header entirely.
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final String? headerLabel;
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final int itemCount;
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/// Row to scroll into view on first build; ignored when null or <= 0.
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final int? initialIndex;
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final Widget Function(BuildContext context, int index, SheetSelectionColumnScope scope) itemBuilder;
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final List<Widget> footer;
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const SheetSelectionColumn({
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super.key,
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this.headerLabel,
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required this.itemCount,
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required this.initialIndex,
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required this.itemBuilder,
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this.footer = const [],
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});
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@override
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State<SheetSelectionColumn> createState() => _SheetSelectionColumnState();
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}
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class _SheetSelectionColumnState extends State<SheetSelectionColumn> implements SheetSelectionColumnScope {
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final _initialScroll = InitialItemScrollController();
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bool _selectionPending = false;
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@override
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void dispose() {
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_initialScroll.dispose();
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super.dispose();
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}
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@override
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Key? keyFor(int index) => index == 0 ? _initialScroll.firstItemKey : null;
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@override
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void runExclusive(Future<void> Function() action) => unawaited(_select(action));
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Future<void> _select(Future<void> Function() action) async {
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if (_selectionPending) return;
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setState(() => _selectionPending = true);
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try {
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await action();
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if (mounted) OverlaySheetController.of(context).close();
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} finally {
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if (mounted) setState(() => _selectionPending = false);
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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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_initialScroll.maybeScrollTo(widget.initialIndex);
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return Column(
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children: [
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if (widget.headerLabel != null) SheetColumnHeader(label: widget.headerLabel!),
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if (_selectionPending) const LinearProgressIndicator(minHeight: 2),
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Expanded(
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child: ListView.builder(
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controller: _initialScroll.controller,
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itemCount: widget.itemCount,
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itemBuilder: (context, index) => widget.itemBuilder(context, index, this),
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),
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),
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...widget.footer,
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],
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);
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}
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}
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