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Rework how the carousel is managed (openfoodfacts#4403)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,86 @@ | ||
| import 'package:carousel_slider/carousel_controller.dart'; | ||
| import 'package:flutter/material.dart'; | ||
| import 'package:smooth_app/helpers/haptic_feedback_helper.dart'; | ||
|
|
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| class ExternalCarouselManager extends StatefulWidget { | ||
| const ExternalCarouselManager({ | ||
| super.key, | ||
| required this.child, | ||
| }); | ||
|
|
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| final Widget child; | ||
|
|
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| static ExternalCarouselManagerState watch(BuildContext context) { | ||
| return context | ||
| .dependOnInheritedWidgetOfExactType<_InheritedCarouselManager>()! | ||
| .state; | ||
| } | ||
|
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| static ExternalCarouselManagerState? find(BuildContext context) { | ||
| return context | ||
| .findAncestorWidgetOfExactType<_InheritedCarouselManager>() | ||
| ?.state; | ||
| } | ||
|
|
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| static ExternalCarouselManagerState read(BuildContext context) { | ||
| return find(context)!; | ||
| } | ||
|
|
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| @override | ||
| State<ExternalCarouselManager> createState() => | ||
| ExternalCarouselManagerState(); | ||
| } | ||
|
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| class ExternalCarouselManagerState extends State<ExternalCarouselManager> { | ||
| final CarouselController _controller = CarouselController(); | ||
|
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| String? _currentBarcode; | ||
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| @override | ||
| Widget build(BuildContext context) { | ||
| return _InheritedCarouselManager( | ||
| state: this, | ||
| child: widget.child, | ||
| ); | ||
| } | ||
|
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| void showSearchCard({bool notify = false}) { | ||
| animatePageTo(0); | ||
|
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| if (notify) { | ||
| SmoothHapticFeedback.lightNotification(); | ||
| } | ||
| } | ||
|
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| // With an animation | ||
| void animatePageTo(int page) => _controller.animateToPage(page); | ||
|
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| // Without an animation | ||
| void moveToSearchCard() => _controller.jumpToPage(0); | ||
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| CarouselController get controller => _controller; | ||
|
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| String? get currentBarcode => _currentBarcode; | ||
|
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| set currentBarcode(String? barcode) => | ||
| setState(() => _currentBarcode = barcode); | ||
|
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| bool updateShouldNotify(ExternalCarouselManagerState oldState) { | ||
| return oldState.currentBarcode != _currentBarcode; | ||
| } | ||
| } | ||
|
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| class _InheritedCarouselManager extends InheritedWidget { | ||
| const _InheritedCarouselManager({ | ||
| required Widget child, | ||
| required this.state, | ||
| Key? key, | ||
| }) : super(key: key, child: child); | ||
|
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| final ExternalCarouselManagerState state; | ||
|
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| @override | ||
| bool updateShouldNotify(_InheritedCarouselManager oldWidget) { | ||
| return state.updateShouldNotify(oldWidget.state); | ||
| } | ||
| } |
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