import 'package:flutter/material.dart'; import 'functions/welcome.dart'; import 'functions/locale.dart'; import 'classes/location.dart'; import 'Locales/locales.dart'; void main() => runApp( MaterialApp( debugShowCheckedModeBanner: false, home: jadegui(), ), ); class jadegui extends StatefulWidget { const jadegui({Key? key}) : super(key: key); @override _jadeguiState createState() => _jadeguiState(); } class _jadeguiState extends State { int _selectedIndex = 0; bool nextpage = false; void nextslide() { setState(() { _selectedIndex = _selectedIndex + 1; }); } @override Widget build(BuildContext context) { return Scaffold( backgroundColor: Color.fromARGB(0, 17, 17, 17), body: Row( children: [ NavigationRail( backgroundColor: Color.fromARGB(0, 27, 27, 27), selectedIndex: _selectedIndex, onDestinationSelected: (int index) { setState(() { _selectedIndex = index; }); }, labelType: NavigationRailLabelType.selected, destinations: const [ NavigationRailDestination( icon: Icon( Icons.home_outlined, color: Color.fromARGB(255, 169, 0, 255), ), selectedIcon: Icon( Icons.home, color: Color.fromARGB(255, 169, 0, 255), ), label: Text( 'Welcome', style: TextStyle( color: Color.fromARGB(255, 169, 0, 255), fontWeight: FontWeight.bold), ), ), NavigationRailDestination( icon: Icon( Icons.location_on_outlined, color: Color.fromARGB(255, 169, 0, 255), ), selectedIcon: Icon( Icons.location_on, color: Color.fromARGB(255, 169, 0, 255), ), label: Text( 'Location', style: TextStyle( color: Color.fromARGB(255, 169, 0, 255), fontWeight: FontWeight.bold), ), ), NavigationRailDestination( icon: Icon( Icons.keyboard_alt_outlined, color: Color.fromARGB(255, 169, 0, 255), ), selectedIcon: Icon( Icons.keyboard, color: Color.fromARGB(255, 169, 0, 255), ), label: Text( 'Keymap', style: TextStyle( color: Color.fromARGB(255, 169, 0, 255), fontWeight: FontWeight.bold), ), ), NavigationRailDestination( icon: Icon( Icons.person_add_alt_outlined, color: Color.fromARGB(255, 169, 0, 255), ), selectedIcon: Icon( Icons.person_add_alt, color: Color.fromARGB(255, 169, 0, 255), ), label: Text( 'Users', style: TextStyle( color: Color.fromARGB(255, 169, 0, 255), fontWeight: FontWeight.bold), ), ), NavigationRailDestination( icon: Icon( Icons.desktop_windows_outlined, color: Color.fromARGB(255, 169, 0, 255), ), selectedIcon: Icon( Icons.desktop_windows_outlined, color: Color.fromARGB(255, 169, 0, 255), ), label: Text( 'Desktop', style: TextStyle( color: Color.fromARGB(255, 169, 0, 255), fontWeight: FontWeight.bold), ), ), NavigationRailDestination( icon: Icon( Icons.miscellaneous_services_outlined, color: Color.fromARGB(255, 169, 0, 255), ), selectedIcon: Icon( Icons.miscellaneous_services, color: Color.fromARGB(255, 169, 0, 255), ), label: Text( 'Misc', style: TextStyle( color: Color.fromARGB(255, 169, 0, 255), fontWeight: FontWeight.bold), ), ), NavigationRailDestination( icon: Icon( Icons.pie_chart_outline, color: Color.fromARGB(255, 169, 0, 255), ), selectedIcon: Icon( Icons.pie_chart, color: Color.fromARGB(255, 169, 0, 255), ), label: Text( 'Partitioning', style: TextStyle( color: Color.fromARGB(255, 169, 0, 255), fontWeight: FontWeight.bold), ), ), NavigationRailDestination( icon: Icon( Icons.summarize_outlined, color: Color.fromARGB(255, 169, 0, 255), ), selectedIcon: Icon( Icons.summarize, color: Color.fromARGB(255, 169, 0, 255), ), label: Text( 'Summary', style: TextStyle( color: Color.fromARGB(255, 169, 0, 255), fontWeight: FontWeight.bold), ), ), NavigationRailDestination( icon: Icon( Icons.download_outlined, color: Color.fromARGB(255, 169, 0, 255), ), selectedIcon: Icon( Icons.download, color: Color.fromARGB(255, 169, 0, 255), ), label: Text( 'Installing', style: TextStyle( color: Color.fromARGB(255, 169, 0, 255), fontWeight: FontWeight.bold), ), ), ], ), const VerticalDivider(thickness: 1, width: 1), // This is the main content. Expanded( child: condition(), ) ], ), ); } bool loadnextpage(region) { bool next = false; print("here"); if (region != "") { setState(() { next = true; }); } else { setState(() { next = true; }); } return next; } Widget condition() { // other logic // Declare a widget variable, // it will be assigned later according // to the condition Widget widget; // Using switch statement to display desired // widget if any certain condition is met // You are free to use any condition // For simplicity I have used boolean contition switch (_selectedIndex) { case 0: widget = welcome(() { setState(() { _selectedIndex = _selectedIndex + 1; }); }); break; case 1: widget = locale(() { setState(() { _selectedIndex = _selectedIndex + 1; }); }, () { setState(() { nextpage = true; }); }, (region) { if (region != "") { setState(() { nextpage = false; }); } else { setState(() { nextpage = true; }); } }, nextpage, europe); break; case 2: widget = const Text( 'Showing Keymap screen', style: TextStyle( fontSize: 18, fontWeight: FontWeight.bold, color: Color.fromARGB(255, 169, 0, 255), ), ); break; case 3: widget = const Text( 'Showing Timezone screen', style: TextStyle( fontSize: 18, fontWeight: FontWeight.bold, color: Color.fromARGB(255, 169, 0, 255), ), ); break; case 4: widget = const Text( 'Showing Users screen', style: TextStyle( fontSize: 18, fontWeight: FontWeight.bold, color: Color.fromARGB(255, 169, 0, 255), ), ); break; case 5: widget = const Text( 'Showing Desktop screen', style: TextStyle( fontSize: 18, fontWeight: FontWeight.bold, color: Color.fromARGB(255, 169, 0, 255), ), ); break; case 6: widget = const Text( 'Showing Misc screen', style: TextStyle( fontSize: 18, fontWeight: FontWeight.bold, color: Color.fromARGB(255, 169, 0, 255), ), ); break; case 7: widget = const Text( 'Showing Partitioning screen', style: TextStyle( fontSize: 18, fontWeight: FontWeight.bold, color: Color.fromARGB(255, 169, 0, 255), ), ); break; case 8: widget = const Text( 'Showing Summary screen', style: TextStyle( fontSize: 18, fontWeight: FontWeight.bold, color: Color.fromARGB(255, 169, 0, 255), ), ); break; case 9: widget = const Text( 'Showing Installing screen', style: TextStyle( fontSize: 18, fontWeight: FontWeight.bold, color: Color.fromARGB(255, 169, 0, 255), ), ); break; default: widget = const Text( 'You should not see this, report this at git.tar.black/crystal/jade_gui', style: TextStyle( fontSize: 18, fontWeight: FontWeight.bold, color: Colors.red, ), ); } // Finally returning a Widget return widget; } void selectlocation(region) {} }