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* created stepper * implementing min and max values * widgetbook * pr comments
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,39 @@ | ||
| import 'package:flutter/material.dart'; | ||
| import 'package:zeta_example/widgets.dart'; | ||
| import 'package:zeta_flutter/zeta_flutter.dart'; | ||
|
|
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| class StepperInputExample extends StatefulWidget { | ||
| static const name = 'StepperInput'; | ||
|
|
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| const StepperInputExample({super.key}); | ||
|
|
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| @override | ||
| State<StepperInputExample> createState() => _StepperInputExampleState(); | ||
| } | ||
|
|
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| class _StepperInputExampleState extends State<StepperInputExample> { | ||
| @override | ||
| Widget build(BuildContext context) { | ||
| return ExampleScaffold( | ||
| name: StepperInputExample.name, | ||
| child: Center( | ||
| child: Column( | ||
| mainAxisSize: MainAxisSize.min, | ||
| children: [ | ||
| ZetaStepperInput( | ||
| min: 0, | ||
| max: 10, | ||
| initialValue: 5, | ||
| onChange: (_) {}, | ||
| ), | ||
| ZetaStepperInput(rounded: false), | ||
| ZetaStepperInput( | ||
| size: ZetaStepperInputSize.large, | ||
| onChange: (_) {}, | ||
| ), | ||
| ].divide(const SizedBox(height: 16)).toList(), | ||
| ), | ||
| ), | ||
| ); | ||
| } | ||
| } |
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23 changes: 23 additions & 0 deletions
23
example/widgetbook/pages/components/stepper_input_widgetbook.dart
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,23 @@ | ||
| import 'package:flutter/material.dart'; | ||
| import 'package:widgetbook/widgetbook.dart'; | ||
| import 'package:zeta_flutter/zeta_flutter.dart'; | ||
|
|
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| import '../../test/test_components.dart'; | ||
| import '../../utils/utils.dart'; | ||
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| Widget stepperInputUseCase(BuildContext context) { | ||
| return WidgetbookTestWidget( | ||
| widget: ZetaStepperInput( | ||
| initialValue: context.knobs.int.input(label: 'Initial value'), | ||
| min: context.knobs.int.input(label: 'Minimum value'), | ||
| max: context.knobs.int.input(label: 'Maximum value'), | ||
| size: context.knobs.list( | ||
| label: 'Size', | ||
| options: ZetaStepperInputSize.values, | ||
| labelBuilder: enumLabelBuilder, | ||
| ), | ||
| rounded: context.knobs.boolean(label: 'Rounded', initialValue: true), | ||
| onChange: context.knobs.boolean(label: 'Disabled', initialValue: false) ? null : (_) {}, | ||
| ), | ||
| ); | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,191 @@ | ||
| import 'package:flutter/foundation.dart'; | ||
| import 'package:flutter/material.dart'; | ||
| import 'package:flutter/services.dart'; | ||
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| import '../../../zeta_flutter.dart'; | ||
|
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| /// Sizes for [ZetaStepperInput] | ||
| enum ZetaStepperInputSize { | ||
| /// Medium | ||
| medium, | ||
|
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| /// Large | ||
| large, | ||
| } | ||
|
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| /// A stepper input, also called numeric stepper, is a common UI element that allows uers to input a number or value simply by clicking the plus and minus buttons. | ||
| class ZetaStepperInput extends StatefulWidget { | ||
| /// Creates a new [ZetaStepperInput] | ||
| const ZetaStepperInput({ | ||
| this.rounded = true, | ||
| this.size = ZetaStepperInputSize.medium, | ||
| this.initialValue, | ||
| this.min, | ||
| this.max, | ||
| this.onChange, | ||
| super.key, | ||
| }) : assert( | ||
| (min == null || (initialValue ?? 0) >= min) && (max == null || (initialValue ?? 0) <= max), | ||
| 'Initial value must be inside given min and max values', | ||
| ); | ||
|
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| /// {@macro zeta-component-rounded} | ||
| final bool rounded; | ||
|
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| /// The size of the stepper input. | ||
| final ZetaStepperInputSize size; | ||
|
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| /// The initial value of the stepper input. | ||
| /// | ||
| /// Must be in the bounds of [min] and [max] (if given). | ||
| final int? initialValue; | ||
|
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| /// The minimum value of the stepper input. | ||
| final int? min; | ||
|
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| /// The maximum value of the stepper input. | ||
| final int? max; | ||
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| /// Called with the value of the stepper whenever it is changed. | ||
| final ValueChanged<int>? onChange; | ||
|
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| @override | ||
| State<ZetaStepperInput> createState() => _ZetaStepperInputState(); | ||
| @override | ||
| void debugFillProperties(DiagnosticPropertiesBuilder properties) { | ||
| super.debugFillProperties(properties); | ||
| properties | ||
| ..add(DiagnosticsProperty<bool>('rounded', rounded)) | ||
| ..add(EnumProperty<ZetaStepperInputSize>('size', size)) | ||
| ..add(IntProperty('initialValue', initialValue)) | ||
| ..add(IntProperty('min', min)) | ||
| ..add(IntProperty('max', max)) | ||
| ..add(ObjectFlagProperty<ValueChanged<int>?>.has('onChange', onChange)); | ||
| } | ||
| } | ||
|
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| class _ZetaStepperInputState extends State<ZetaStepperInput> { | ||
| final TextEditingController _controller = TextEditingController(); | ||
| int _value = 0; | ||
| late final bool _disabled; | ||
|
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| @override | ||
| void initState() { | ||
| super.initState(); | ||
| _disabled = widget.onChange == null; | ||
| if (widget.initialValue != null) { | ||
| _value = widget.initialValue!; | ||
| } | ||
| _controller.text = _value.toString(); | ||
| } | ||
|
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| @override | ||
| void dispose() { | ||
| super.dispose(); | ||
| _controller.dispose(); | ||
| } | ||
|
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| InputBorder get _border { | ||
| final colors = Zeta.of(context).colors; | ||
|
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| return OutlineInputBorder( | ||
| borderSide: BorderSide( | ||
| color: !_disabled ? colors.borderSubtle : colors.borderDisabled, | ||
| ), | ||
| borderRadius: widget.rounded ? ZetaRadius.minimal : ZetaRadius.none, | ||
| ); | ||
| } | ||
|
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| double get _height { | ||
| if (widget.size != ZetaStepperInputSize.large) { | ||
| return ZetaSpacing.x10; | ||
| } else { | ||
| return ZetaSpacing.x12; | ||
| } | ||
| } | ||
|
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| void _onTextChange(String value) { | ||
| int? val = int.tryParse(value); | ||
| if (val != null) { | ||
| if (widget.max != null && val > widget.max!) { | ||
| val = widget.max; | ||
| } | ||
| if (widget.min != null && val! < widget.min!) { | ||
| val = widget.min; | ||
| } | ||
| _onChange(val!); | ||
| } | ||
| } | ||
|
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| void _onChange(int value) { | ||
| if (!(widget.max != null && value > widget.max! || widget.min != null && value < widget.min!)) { | ||
| setState(() { | ||
| _value = value; | ||
| }); | ||
| _controller.text = value.toString(); | ||
| widget.onChange?.call(value); | ||
| } | ||
| } | ||
|
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| ZetaIconButton _getButton({bool increase = false}) { | ||
| return ZetaIconButton( | ||
| icon: increase | ||
| ? widget.rounded | ||
| ? ZetaIcons.add_round | ||
| : ZetaIcons.add_sharp | ||
| : widget.rounded | ||
| ? ZetaIcons.remove_round | ||
| : ZetaIcons.remove_sharp, | ||
| type: ZetaButtonType.outlineSubtle, | ||
| size: widget.size == ZetaStepperInputSize.medium ? ZetaWidgetSize.medium : ZetaWidgetSize.large, | ||
| borderType: widget.rounded ? ZetaWidgetBorder.rounded : ZetaWidgetBorder.sharp, | ||
| onPressed: !_disabled | ||
| ? () => _onChange( | ||
| _value + (increase ? 1 : -1), | ||
| ) | ||
| : null, | ||
| ); | ||
| } | ||
|
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| @override | ||
| Widget build(BuildContext context) { | ||
| final colors = Zeta.of(context).colors; | ||
|
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| return Row( | ||
| mainAxisSize: MainAxisSize.min, | ||
| children: [ | ||
| _getButton(), | ||
| SizedBox( | ||
| width: ZetaSpacing.xl, | ||
| child: TextFormField( | ||
| keyboardType: TextInputType.number, | ||
| enabled: !_disabled, | ||
| controller: _controller, | ||
| onChanged: _onTextChange, | ||
| textAlign: TextAlign.center, | ||
| inputFormatters: [FilteringTextInputFormatter.digitsOnly], | ||
| style: Theme.of(context).textTheme.bodyMedium?.copyWith( | ||
| color: _disabled ? colors.textDisabled : null, | ||
| ), | ||
| onTapOutside: (_) { | ||
| if (_controller.text.isEmpty) { | ||
| _controller.text = _value.toString(); | ||
| } | ||
| }, | ||
| decoration: InputDecoration( | ||
| filled: true, | ||
| fillColor: _disabled ? colors.surfaceDisabled : null, | ||
| contentPadding: EdgeInsets.zero, | ||
| constraints: BoxConstraints(maxHeight: _height), | ||
| border: _border, | ||
| focusedBorder: _border, | ||
| enabledBorder: _border, | ||
| disabledBorder: _border, | ||
| ), | ||
| ), | ||
| ), | ||
| _getButton(increase: true), | ||
| ].divide(const SizedBox(width: ZetaSpacing.x2)).toList(), | ||
| ); | ||
| } | ||
| } |
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