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98 lines
2.1 KiB
Dart
98 lines
2.1 KiB
Dart
/*
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* Copyright © 2020, Simform Solutions
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* All rights reserved.
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* https://github.com/simformsolutions/flutter_showcaseview
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*/
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/*
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Customized By: Ibrahim Albitar
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*/
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import 'package:flutter/material.dart';
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class ShowCaseWidget extends StatefulWidget {
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final Builder builder;
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final VoidCallback onFinish;
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const ShowCaseWidget({@required this.builder, this.onFinish});
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static activeTargetWidget(BuildContext context) {
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return context
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.dependOnInheritedWidgetOfExactType<_InheritedShowCaseView>()
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.activeWidgetIds;
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}
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static ShowCaseWidgetState of(BuildContext context) {
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ShowCaseWidgetState state =
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context.findAncestorStateOfType<ShowCaseWidgetState>();
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if (state != null) {
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return context.findAncestorStateOfType<ShowCaseWidgetState>();
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} else {
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throw Exception('Please provide ShowCaseView context');
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}
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}
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@override
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ShowCaseWidgetState createState() => ShowCaseWidgetState();
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}
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class ShowCaseWidgetState extends State<ShowCaseWidget> {
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List<GlobalKey> ids;
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int activeWidgetId;
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void startShowCase(List<GlobalKey> widgetIds) {
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setState(() {
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this.ids = widgetIds;
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activeWidgetId = 0;
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});
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}
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void completed(GlobalKey id) {
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if (ids != null && ids[activeWidgetId] == id) {
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setState(() {
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++activeWidgetId;
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if (activeWidgetId >= ids.length) {
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_cleanupAfterSteps();
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if (widget.onFinish != null) {
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widget.onFinish();
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}
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}
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});
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}
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}
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void dismiss() {
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setState(() {
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_cleanupAfterSteps();
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});
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}
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void _cleanupAfterSteps() {
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ids = null;
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activeWidgetId = null;
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}
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@override
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Widget build(BuildContext context) {
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return _InheritedShowCaseView(
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child: widget.builder,
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activeWidgetIds: ids?.elementAt(activeWidgetId),
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);
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}
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}
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class _InheritedShowCaseView extends InheritedWidget {
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final GlobalKey activeWidgetIds;
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_InheritedShowCaseView({
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@required this.activeWidgetIds,
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@required child,
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}) : super(child: child);
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@override
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bool updateShouldNotify(_InheritedShowCaseView oldWidget) =>
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oldWidget.activeWidgetIds != activeWidgetIds;
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}
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