104 lines
2.8 KiB
Dart
104 lines
2.8 KiB
Dart
import 'package:flutter/cupertino.dart';
|
|
import 'package:flutter/widgets.dart';
|
|
import 'package:mobile_nebula/components/SimplePage.dart';
|
|
import 'package:mobile_nebula/services/utils.dart';
|
|
|
|
/// SimplePage with a form and built in validation and confirmation to discard changes if any are made
|
|
class FormPage extends StatefulWidget {
|
|
const FormPage(
|
|
{Key? key,
|
|
required this.title,
|
|
required this.child,
|
|
required this.onSave,
|
|
required this.changed,
|
|
this.hideSave = false,
|
|
this.scrollController})
|
|
: super(key: key);
|
|
|
|
final String title;
|
|
final Function onSave;
|
|
final Widget child;
|
|
final ScrollController? scrollController;
|
|
|
|
/// If you need the page to progress to a certain point before saving, control it here
|
|
final bool hideSave;
|
|
|
|
/// Useful if you have a non form field that can change, overrides the internal changed state if true
|
|
final bool changed;
|
|
|
|
@override
|
|
_FormPageState createState() => _FormPageState();
|
|
}
|
|
|
|
class _FormPageState extends State<FormPage> {
|
|
var changed = false;
|
|
final _formKey = GlobalKey<FormState>();
|
|
|
|
@override
|
|
Widget build(BuildContext context) {
|
|
changed = widget.changed || changed;
|
|
|
|
return PopScope<Object?>(
|
|
canPop: !changed,
|
|
onPopInvokedWithResult: (bool didPop, Object? result) async {
|
|
if (didPop) {
|
|
return;
|
|
}
|
|
final NavigatorState navigator = Navigator.of(context);
|
|
|
|
Utils.confirmDelete(context, 'Discard changes?', () {
|
|
navigator.pop();
|
|
}, deleteLabel: 'Yes', cancelLabel: 'No');
|
|
},
|
|
child: SimplePage(
|
|
leadingAction: _buildLeader(context),
|
|
trailingActions: _buildTrailer(context),
|
|
scrollController: widget.scrollController,
|
|
title: Text(widget.title),
|
|
child: Form(
|
|
key: _formKey,
|
|
onChanged: () => setState(() {
|
|
changed = true;
|
|
}),
|
|
child: widget.child),
|
|
));
|
|
}
|
|
|
|
Widget _buildLeader(BuildContext context) {
|
|
return Utils.leadingBackWidget(context, label: changed ? 'Cancel' : 'Back', onPressed: () {
|
|
if (changed) {
|
|
Utils.confirmDelete(context, 'Discard changes?', () {
|
|
changed = false;
|
|
Navigator.pop(context);
|
|
}, deleteLabel: 'Yes', cancelLabel: 'No');
|
|
} else {
|
|
Navigator.pop(context);
|
|
}
|
|
});
|
|
}
|
|
|
|
List<Widget> _buildTrailer(BuildContext context) {
|
|
if (!changed || widget.hideSave) {
|
|
return [];
|
|
}
|
|
|
|
return [
|
|
Utils.trailingSaveWidget(
|
|
context,
|
|
() {
|
|
if (_formKey.currentState == null) {
|
|
return;
|
|
}
|
|
|
|
if (!_formKey.currentState!.validate()) {
|
|
return;
|
|
}
|
|
|
|
_formKey.currentState!.save();
|
|
widget.onSave();
|
|
},
|
|
)
|
|
];
|
|
}
|
|
}
|