144 lines
4.1 KiB
Dart
144 lines
4.1 KiB
Dart
import 'dart:async';
|
|
|
|
import 'package:aves/model/image_entry.dart';
|
|
import 'package:aves/model/metadata_service.dart';
|
|
import 'package:aves/utils/color_utils.dart';
|
|
import 'package:aves/widgets/common/fx/highlight_decoration.dart';
|
|
import 'package:aves/widgets/fullscreen/info/info_page.dart';
|
|
import 'package:flutter/material.dart';
|
|
import 'package:flutter_staggered_grid_view/flutter_staggered_grid_view.dart';
|
|
|
|
class MetadataSectionSliver extends StatefulWidget {
|
|
final ImageEntry entry;
|
|
final int columnCount;
|
|
final ValueNotifier<bool> visibleNotifier;
|
|
|
|
const MetadataSectionSliver({
|
|
@required this.entry,
|
|
@required this.columnCount,
|
|
this.visibleNotifier,
|
|
});
|
|
|
|
@override
|
|
State<StatefulWidget> createState() => _MetadataSectionSliverState();
|
|
}
|
|
|
|
class _MetadataSectionSliverState extends State<MetadataSectionSliver> with AutomaticKeepAliveClientMixin {
|
|
Map _metadata;
|
|
String _loadedMetadataUri;
|
|
|
|
bool get isVisible => widget.visibleNotifier.value;
|
|
|
|
@override
|
|
void initState() {
|
|
super.initState();
|
|
_registerWidget(widget);
|
|
_getMetadata();
|
|
}
|
|
|
|
@override
|
|
void didUpdateWidget(MetadataSectionSliver oldWidget) {
|
|
super.didUpdateWidget(oldWidget);
|
|
_unregisterWidget(oldWidget);
|
|
_registerWidget(widget);
|
|
_getMetadata();
|
|
}
|
|
|
|
@override
|
|
void dispose() {
|
|
_unregisterWidget(widget);
|
|
super.dispose();
|
|
}
|
|
|
|
void _registerWidget(MetadataSectionSliver widget) {
|
|
widget.visibleNotifier.addListener(_getMetadata);
|
|
}
|
|
|
|
void _unregisterWidget(MetadataSectionSliver widget) {
|
|
widget.visibleNotifier.removeListener(_getMetadata);
|
|
}
|
|
|
|
@override
|
|
Widget build(BuildContext context) {
|
|
super.build(context);
|
|
final directoryNames = (_metadata?.keys?.toList() ?? [])..sort();
|
|
return SliverStaggeredGrid.countBuilder(
|
|
crossAxisCount: widget.columnCount,
|
|
staggeredTileBuilder: (index) => StaggeredTile.fit(index == 0 ? widget.columnCount : 1),
|
|
itemBuilder: (context, index) {
|
|
return index == 0
|
|
? const SectionRow('Metadata')
|
|
: _Directory(
|
|
metadataMap: _metadata,
|
|
directoryName: directoryNames[index - 1],
|
|
);
|
|
},
|
|
itemCount: directoryNames.isEmpty ? 0 : directoryNames.length + 1,
|
|
mainAxisSpacing: 0,
|
|
crossAxisSpacing: 8,
|
|
);
|
|
}
|
|
|
|
Future<void> _getMetadata() async {
|
|
if (_loadedMetadataUri == widget.entry.uri) return;
|
|
if (isVisible) {
|
|
_metadata = await MetadataService.getAllMetadata(widget.entry);
|
|
_loadedMetadataUri = widget.entry.uri;
|
|
} else {
|
|
_metadata = null;
|
|
_loadedMetadataUri = null;
|
|
}
|
|
if (mounted) setState(() {});
|
|
}
|
|
|
|
@override
|
|
bool get wantKeepAlive => true;
|
|
}
|
|
|
|
class _Directory extends StatelessWidget {
|
|
final Map metadataMap;
|
|
final String directoryName;
|
|
|
|
static const int maxValueLength = 140;
|
|
|
|
const _Directory({@required this.metadataMap, @required this.directoryName});
|
|
|
|
@override
|
|
Widget build(BuildContext context) {
|
|
final directory = metadataMap[directoryName];
|
|
final tagKeys = directory.keys.toList()..sort();
|
|
|
|
return Column(
|
|
crossAxisAlignment: CrossAxisAlignment.start,
|
|
children: [
|
|
if (directoryName.isNotEmpty)
|
|
Container(
|
|
decoration: HighlightDecoration(
|
|
color: stringToColor(directoryName),
|
|
),
|
|
margin: const EdgeInsets.symmetric(vertical: 4.0),
|
|
child: Text(
|
|
directoryName,
|
|
style: const TextStyle(
|
|
shadows: [
|
|
Shadow(
|
|
color: Colors.black,
|
|
offset: Offset(1, 1),
|
|
blurRadius: 2,
|
|
)
|
|
],
|
|
fontSize: 18,
|
|
fontFamily: 'Concourse Caps',
|
|
),
|
|
),
|
|
),
|
|
...tagKeys.map((tagKey) {
|
|
final value = directory[tagKey] as String;
|
|
if (value == null || value.isEmpty) return const SizedBox.shrink();
|
|
return InfoRow(tagKey, value.length > maxValueLength ? '${value.substring(0, maxValueLength)}…' : value);
|
|
}),
|
|
const SizedBox(height: 16),
|
|
],
|
|
);
|
|
}
|
|
}
|