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RCF-1132 DropDown value not selected properly (#510)
Signed-off-by: sachin.sp <sachin.sp@cyberpwn.com> Co-authored-by: sachin.sp <sachin.sp@cyberpwn.com>
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lib/ui/process_ui/widgets/custom_dropdown_cupertino_picker.dart
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|---|---|---|
| @@ -0,0 +1,129 @@ | ||
| /* | ||
| * Copyright (c) Modular Open Source Identity Platform | ||
| * This source code is licensed under the MIT license found in the | ||
| * LICENSE file in the root directory of this source tree. | ||
| * | ||
| */ | ||
|
|
||
| import 'package:flutter/cupertino.dart'; | ||
| import 'package:flutter/material.dart'; | ||
| import 'package:registration_client/utils/app_config.dart'; | ||
|
|
||
| class CustomCupertinoDropDownPicker extends StatefulWidget { | ||
| final AsyncSnapshot snapshot; | ||
| final double itemExtent; | ||
| final Widget selectionOverlay; | ||
| final double diameterRatio; | ||
| final Color? backgroundColor; | ||
| final double offAxisFraction; | ||
| final bool useMagnifier; | ||
| final double magnification; | ||
| final double squeeze; | ||
| final String? initialValue; | ||
| final void Function(String) onSelectedItemChanged; | ||
| final TextStyle? selectedStyle; | ||
| final TextStyle? unselectedStyle; | ||
|
|
||
| const CustomCupertinoDropDownPicker({ | ||
| Key? key, | ||
| required this.snapshot, | ||
| required this.itemExtent, | ||
| required this.onSelectedItemChanged, | ||
| this.selectedStyle, | ||
| this.unselectedStyle, | ||
| this.backgroundColor, | ||
| this.squeeze = 1.45, | ||
| this.diameterRatio = 1.1, | ||
| this.magnification = 1.0, | ||
| this.offAxisFraction = 0.0, | ||
| this.useMagnifier = false, | ||
| this.selectionOverlay = const CupertinoPickerDefaultSelectionOverlay(), | ||
| this.initialValue, | ||
| }) : super(key: key); | ||
|
|
||
| @override | ||
| State<CustomCupertinoDropDownPicker> createState() => | ||
| _CustomCupertinoDropDownPickerState(); | ||
| } | ||
|
|
||
| class _CustomCupertinoDropDownPickerState | ||
| extends State<CustomCupertinoDropDownPicker> { | ||
| late int _selectedIndex; | ||
| late final FixedExtentScrollController _scrollController; | ||
|
|
||
| @override | ||
| void initState() { | ||
| super.initState(); | ||
| _selectedIndex = _getInitialSelectedIndex(); | ||
| _scrollController = | ||
| FixedExtentScrollController(initialItem: _selectedIndex); | ||
| WidgetsBinding.instance.addPostFrameCallback((_) { | ||
| _scrollController.jumpToItem(_selectedIndex); | ||
| }); | ||
| } | ||
|
|
||
| int _getInitialSelectedIndex() { | ||
| if (widget.initialValue != null && widget.snapshot.hasData) { | ||
| List<String> items = | ||
| (widget.snapshot.data as List<dynamic>).whereType<String>().toList(); | ||
| return items.indexOf(widget.initialValue!); | ||
| } | ||
| return 0; | ||
| } | ||
|
|
||
| @override | ||
| void dispose() { | ||
| _scrollController.dispose(); | ||
| super.dispose(); | ||
| } | ||
|
|
||
| @override | ||
| Widget build(BuildContext context) { | ||
| if (widget.snapshot.connectionState == ConnectionState.waiting) { | ||
| return const Center(child: CupertinoActivityIndicator()); | ||
| } | ||
|
|
||
| if (!widget.snapshot.hasData || | ||
| widget.snapshot.data == null || | ||
| (widget.snapshot.data is List && | ||
| (widget.snapshot.data as List).isEmpty)) { | ||
| return const Center(child: Text("No data available")); | ||
| } | ||
|
|
||
| // Convert data to List<String> to avoid type mismatch | ||
| List<String> items = | ||
| (widget.snapshot.data as List<dynamic>).whereType<String>().toList(); | ||
|
|
||
| return CupertinoPicker.builder( | ||
| childCount: items.length, | ||
| squeeze: widget.squeeze, | ||
| itemExtent: widget.itemExtent, | ||
| scrollController: _scrollController, | ||
| useMagnifier: widget.useMagnifier, | ||
| diameterRatio: widget.diameterRatio, | ||
| magnification: widget.magnification, | ||
| backgroundColor: widget.backgroundColor, | ||
| offAxisFraction: widget.offAxisFraction, | ||
| selectionOverlay: widget.selectionOverlay, | ||
| onSelectedItemChanged: (index) { | ||
| setState(() => _selectedIndex = index); | ||
| widget.onSelectedItemChanged(items[index]); | ||
| }, | ||
| itemBuilder: (context, index) => ListTile( | ||
| title: Center( | ||
| child: Text( | ||
| items[index], | ||
| style: index == _selectedIndex | ||
| ? widget.selectedStyle | ||
| : widget.unselectedStyle, | ||
| ), | ||
| ), | ||
| trailing: Icon( | ||
| Icons.check, | ||
| size: 28, | ||
| color: index == _selectedIndex ? dropDownSelector : Colors.white, | ||
| ), | ||
| ), | ||
| ); | ||
| } | ||
| } |
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