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Feat: showDatePicker - Exposed callback when user changes Date Picker Mode (#119116)

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Hasnen Tai 2023-03-04 05:25:04 +05:30 committed by GitHub
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commit 859b6ecd3d
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2 changed files with 38 additions and 0 deletions
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20
packages/flutter/lib/src/material/date_picker.dart
View File

@ -164,6 +164,7 @@ Future<DateTime?> showDatePicker({
String? fieldLabelText,
TextInputType? keyboardType,
Offset? anchorPoint,
final ValueChanged<DatePickerEntryMode>? onDatePickerModeChange
}) async {
initialDate = DateUtils.dateOnly(initialDate);
firstDate = DateUtils.dateOnly(firstDate);
@ -202,6 +203,7 @@ Future<DateTime?> showDatePicker({
fieldHintText: fieldHintText,
fieldLabelText: fieldLabelText,
keyboardType: keyboardType,
onDatePickerModeChange: onDatePickerModeChange,
);
if (textDirection != null) {
@ -259,6 +261,7 @@ class DatePickerDialog extends StatefulWidget {
this.fieldLabelText,
this.keyboardType,
this.restorationId,
this.onDatePickerModeChange
}) : initialDate = DateUtils.dateOnly(initialDate),
firstDate = DateUtils.dateOnly(firstDate),
lastDate = DateUtils.dateOnly(lastDate),
@ -356,6 +359,15 @@ class DatePickerDialog extends StatefulWidget {
/// Flutter.
final String? restorationId;
/// Called when the [DatePickerDialog] is toggled between
/// [DatePickerEntryMode.calendar],[DatePickerEntryMode.input].
///
/// An example of how this callback might be used is an app that saves the
/// user's preferred entry mode and uses it to initialize the
/// `initialEntryMode` parameter the next time the date picker is shown.
final ValueChanged<DatePickerEntryMode>? onDatePickerModeChange;
@override
State<DatePickerDialog> createState() => _DatePickerDialogState();
}
@ -394,16 +406,24 @@ class _DatePickerDialogState extends State<DatePickerDialog> with RestorationMix
Navigator.pop(context);
}
void _handleOnDatePickerModeChange() {
if (widget.onDatePickerModeChange != null) {
widget.onDatePickerModeChange!(_entryMode.value);
}
}
void _handleEntryModeToggle() {
setState(() {
switch (_entryMode.value) {
case DatePickerEntryMode.calendar:
_autovalidateMode.value = AutovalidateMode.disabled;
_entryMode.value = DatePickerEntryMode.input;
_handleOnDatePickerModeChange();
break;
case DatePickerEntryMode.input:
_formKey.currentState!.save();
_entryMode.value = DatePickerEntryMode.calendar;
_handleOnDatePickerModeChange();
break;
case DatePickerEntryMode.calendarOnly:
case DatePickerEntryMode.inputOnly:

18
packages/flutter/test/material/date_picker_test.dart
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@ -20,6 +20,7 @@ void main() {
late SelectableDayPredicate? selectableDayPredicate;
late DatePickerEntryMode initialEntryMode;
late DatePickerMode initialCalendarMode;
late DatePickerEntryMode currentMode;
String? cancelText;
String? confirmText;
@ -56,6 +57,7 @@ void main() {
fieldLabelText = null;
helpText = null;
keyboardType = null;
currentMode = initialEntryMode;
});
Future<void> prepareDatePicker(
@ -101,6 +103,9 @@ void main() {
fieldLabelText: fieldLabelText,
helpText: helpText,
keyboardType: keyboardType,
onDatePickerModeChange: (DatePickerEntryMode value) {
currentMode = value;
},
builder: (BuildContext context, Widget? child) {
return Directionality(
textDirection: textDirection,
@ -1369,6 +1374,19 @@ void main() {
expect(find.byType(TextField), findsNothing);
expect(find.byIcon(Icons.edit), findsNothing);
}, skip: isBrowser); // https://github.com/flutter/flutter/issues/33615
testWidgets('Test Callback on Toggle of DatePicker Mode', (WidgetTester tester) async {
prepareDatePicker(tester, (Future<DateTime?> date) async {
await tester.tap(find.byIcon(Icons.edit));
expect(currentMode, DatePickerEntryMode.input);
await tester.pumpAndSettle();
expect(find.byType(TextField), findsOneWidget);
await tester.tap(find.byIcon(Icons.calendar_today));
expect(currentMode, DatePickerEntryMode.calendar);
await tester.pumpAndSettle();
expect(find.byType(TextField), findsNothing);
});
});
}
class _RestorableDatePickerDialogTestWidget extends StatefulWidget {