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MrbWebLibre/apps/weblibre/lib/data/database/converters/icon_data.dart
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2026-05-24 14:59:09 +02:00

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Dart

/*
* Copyright (c) 2024-2026 Fabian Freund.
*
* This file is part of WebLibre
* (see https://weblibre.eu).
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
import 'dart:convert';
import 'package:drift/drift.dart';
import 'package:flutter/widgets.dart';
import 'package:flutter_material_design_icons/flutter_material_design_icons.dart';
import 'package:json_annotation/json_annotation.dart';
final Map<String, IconData> _mdiIconsByName = Map.unmodifiable({
for (final iconData in MdiIcons.values)
if (iconData.mdiMetadata case final metadata?) metadata.name: iconData,
});
final Map<int, IconData> _mdiIconsByCodePoint = Map.unmodifiable({
for (final iconData in MdiIcons.values) iconData.codePoint: iconData,
});
class IconDataJsonConverter
implements JsonConverter<IconData, Map<String, dynamic>> {
const IconDataJsonConverter();
@override
IconData fromJson(Map<String, dynamic> json) {
if (json['name'] case final String name) {
final iconData = _mdiIconsByName[name];
if (iconData != null) {
return iconData;
}
}
final codePoint = json['codePoint'];
if (codePoint is int) {
final iconData = _mdiIconsByCodePoint[codePoint];
if (iconData != null) {
return iconData;
}
}
throw FormatException('Unknown MDI icon data: $json');
}
@override
Map<String, dynamic> toJson(IconData iconData) {
final metadata = iconData.mdiMetadata;
if (metadata == null) {
throw ArgumentError.value(
iconData,
'iconData',
'Icon is not an MDI icon',
);
}
return <String, dynamic>{'name': metadata.name};
}
}
class IconDataTypeConverter implements TypeConverter<IconData, String> {
const IconDataTypeConverter();
@override
IconData fromSql(String fromDb) {
final json = jsonDecode(fromDb) as Map<String, dynamic>;
return const IconDataJsonConverter().fromJson(json);
}
@override
String toSql(IconData value) {
return jsonEncode(const IconDataJsonConverter().toJson(value));
}
}