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fforte/lib/screens/excursion/widgets/hund_u_leine.dart

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4.1 KiB
Dart

// * Widget for recording presence of dogs and their leash status during excursions
// * Features:
// * - Dog presence selection (yes/no)
// * - Conditional leash status selection
// * - State persistence via text controllers
// * - Localized labels
import 'package:flutter/material.dart';
import 'package:fforte/l10n/app_localizations.dart';
/// Widget for managing information about dogs during wildlife monitoring
/// Tracks both presence of dogs and whether they are leashed
class HundULeine extends StatefulWidget {
/// Controller for dog presence status (yes/name or no)
final TextEditingController mHund;
/// Controller for leash status
final TextEditingController mLeine;
const HundULeine({super.key, required this.mHund, required this.mLeine});
@override
HundULeineState createState() => HundULeineState();
}
/// State class for the dog and leash selection widget
class HundULeineState extends State<HundULeine> {
/// Currently selected dog presence value
late String _selectedMHundValue;
/// Currently selected leash status value
late String _selectedMLeineValue;
/// Whether to show leash selection options
bool visible = false;
@override
void initState() {
// Initialize dog presence selection
if (widget.mHund.text == "") {
_selectedMHundValue = "nein";
} else {
_selectedMHundValue = widget.mHund.text;
visible = true;
}
// Initialize leash status selection
if (widget.mLeine.text == "") {
_selectedMLeineValue = "nein";
} else {
_selectedMLeineValue = widget.mLeine.text;
}
super.initState();
}
/// Update widget state and controller values when selections change
/// @param mHund New dog presence value
/// @param mLeine New leash status value
void onValueChanged(String mHund, String mLeine) {
setState(() {
visible = mHund == "ja" ? true : false;
_selectedMHundValue = mHund;
_selectedMLeineValue = mLeine;
widget.mHund.text = mHund;
widget.mLeine.text = mLeine;
});
}
@override
Widget build(BuildContext context) {
return Column(
children: [
// Dog presence section header
Align(
alignment: Alignment.bottomLeft,
child: Text(AppLocalizations.of(context)!.mHund),
),
// Dog presence - Yes option
ListTile(
visualDensity: const VisualDensity(vertical: -4),
title: Text(AppLocalizations.of(context)!.ja),
leading: Radio<String>(
value: "ja",
groupValue: _selectedMHundValue,
onChanged: (value) {
onValueChanged(value!, _selectedMLeineValue);
},
),
),
// Dog presence - No option
ListTile(
visualDensity: const VisualDensity(vertical: -4),
title: Text(AppLocalizations.of(context)!.nein),
leading: Radio<String>(
value: "nein",
groupValue: _selectedMHundValue,
onChanged: (value) {
onValueChanged(value!, "nein");
},
),
),
// Conditional leash status section
if (visible) ...[
// Leash status section header
Align(
alignment: Alignment.bottomLeft,
child: Text(AppLocalizations.of(context)!.mLeine),
),
// Leash status - Yes option
ListTile(
visualDensity: const VisualDensity(vertical: -4),
title: Text(AppLocalizations.of(context)!.ja),
leading: Radio<String>(
value: "ja",
groupValue: _selectedMLeineValue,
onChanged: (value) {
onValueChanged("ja", value!);
},
),
),
// Leash status - No option
ListTile(
visualDensity: const VisualDensity(vertical: -4),
title: Text(AppLocalizations.of(context)!.nein),
leading: Radio<String>(
value: "nein",
groupValue: _selectedMLeineValue,
onChanged: (value) {
onValueChanged("ja", value!);
},
),
),
],
],
);
}
}