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Disable submit button if input is empty in TextInputDialog

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This commit is contained in:
ashilkn 2023-04-26 11:46:24 +05:30
parent 767c76e2f1
commit c183e3eca8
1 changed files with 32 additions and 7 deletions
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39
lib/ui/components/dialog_widget.dart
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@ -208,10 +208,29 @@ class TextInputDialog extends StatefulWidget {
class _TextInputDialogState extends State<TextInputDialog> {
//the value of this ValueNotifier has no significance
final _submitNotifier = ValueNotifier(false);
late final ValueNotifier<bool> _inputIsEmptyNotifier;
late final TextEditingController _textEditingController;
@override
void initState() {
_textEditingController =
widget.textEditingController ?? TextEditingController();
_inputIsEmptyNotifier = widget.initialValue?.isEmpty ?? true
? ValueNotifier(true)
: ValueNotifier(false);
_textEditingController.addListener(() {
if (_textEditingController.text.isEmpty != _inputIsEmptyNotifier.value) {
_inputIsEmptyNotifier.value = _textEditingController.text.isEmpty;
}
});
super.initState();
}
@override
void dispose() {
_submitNotifier.dispose();
_textEditingController.dispose();
_inputIsEmptyNotifier.dispose();
super.dispose();
}
@ -258,7 +277,7 @@ class _TextInputDialogState extends State<TextInputDialog> {
textCapitalization: widget.textCapitalization,
alwaysShowSuccessState: widget.alwaysShowSuccessState,
isPasswordInput: widget.isPasswordInput,
textEditingController: widget.textEditingController,
textEditingController: _textEditingController,
textInputFormatter: widget.textInputFormatter,
textInputType: widget.textInputType,
),
@ -277,12 +296,18 @@ class _TextInputDialogState extends State<TextInputDialog> {
),
const SizedBox(width: 8),
Expanded(
child: ButtonWidget(
buttonSize: ButtonSize.small,
buttonType: ButtonType.neutral,
labelText: widget.submitButtonLabel,
onTap: () async {
_submitNotifier.value = !_submitNotifier.value;
child: ValueListenableBuilder(
valueListenable: _inputIsEmptyNotifier,
builder: (context, bool value, _) {
return ButtonWidget(
buttonSize: ButtonSize.small,
buttonType: ButtonType.neutral,
labelText: widget.submitButtonLabel,
isDisabled: value,
onTap: () async {
_submitNotifier.value = !_submitNotifier.value;
},
);
},
),
),