import 'dart:async';

import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';

void main() => runApp(const AppRoot());

@immutable
class CustomNavigator extends Navigator {
  const CustomNavigator({
    super.key,
    super.pages,
    super.onPopPage,
    super.initialRoute,
    super.onGenerateInitialRoutes,
    super.onGenerateRoute,
    super.onUnknownRoute,
    super.transitionDelegate,
    super.reportsRouteUpdateToEngine,
    // >= 3.7.0
    // super.clipBehavior,
    super.observers,
    super.requestFocus,
    super.restorationScopeId,
  });

  @override
  CustomNavigatorState createState() => CustomNavigatorState();
}

class CustomNavigatorState extends NavigatorState {
  bool _originalTimingGestureInProgress = false;
  bool get originalTimingGestureInProgress => _originalTimingGestureInProgress;

  bool _gestureInProgress = false;

  @override
  bool get userGestureInProgress => _gestureInProgress;

  @override
  void didStartUserGesture() {
    _gestureInProgress = true;
    _originalTimingGestureInProgress = true;
    super.didStartUserGesture();
  }

  @override
  void didStopUserGesture() {
    _gestureInProgress = false;
    _originalTimingGestureInProgress = false;
    super.didStopUserGesture();
  }

  void _handlePointerEnd() => _gestureInProgress = false;

  @override
  Widget build(BuildContext context) {
    final child = super.build(context);

    return Listener(
      onPointerUp: (event) => _handlePointerEnd(),
      onPointerCancel: (event) => _handlePointerEnd(),
      child: child,
    );
  }
}

@immutable
class CustomPageTransitionsTheme extends PageTransitionsTheme {
  const CustomPageTransitionsTheme();

  static const _builder = CupertinoPageTransitionsBuilder();

  @override
  Widget buildTransitions<T>(
    PageRoute<T> route,
    BuildContext context,
    Animation<double> animation,
    Animation<double> secondaryAnimation,
    Widget child,
  ) {
    final originalPageTransition = _builder.buildTransitions<T>(
      route,
      context,
      animation,
      secondaryAnimation,
      child,
    );

    final navigator = route.navigator;
    if (navigator is! CustomNavigatorState) {
      return originalPageTransition;
    }

    final linearTransition = navigator.originalTimingGestureInProgress;

    if (route.fullscreenDialog) {
      return CupertinoFullscreenDialogTransition(
        primaryRouteAnimation: animation,
        secondaryRouteAnimation: secondaryAnimation,
        linearTransition: linearTransition,
        child: child,
      );
    } else {
      return CupertinoPageTransition(
        primaryRouteAnimation: animation,
        secondaryRouteAnimation: secondaryAnimation,
        linearTransition: linearTransition,
        child: (originalPageTransition as CupertinoPageTransition).child,
      );
    }
  }
}

@immutable
class AppRoot extends StatelessWidget {
  const AppRoot({super.key});

  Navigator _findNavigator(dynamic child) {
    if (child is Navigator) {
      return child;
    }
    // ignore: avoid_dynamic_calls
    return _findNavigator(child.child);
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      theme: ThemeData(
        pageTransitionsTheme: const CustomPageTransitionsTheme(),
      ),
      home: const SamplePage(),
      builder: (context, child) {
        final navigator = _findNavigator(child);

        return CustomNavigator(
          key: navigator.key,
          pages: navigator.pages,
          onPopPage: navigator.onPopPage,
          initialRoute: navigator.initialRoute,
          onGenerateInitialRoutes: navigator.onGenerateInitialRoutes,
          onGenerateRoute: navigator.onGenerateRoute,
          onUnknownRoute: navigator.onUnknownRoute,
          transitionDelegate: navigator.transitionDelegate,
          reportsRouteUpdateToEngine: navigator.reportsRouteUpdateToEngine,
          // >= 3.7.0
          // clipBehavior: navigator.clipBehavior,
          observers: navigator.observers,
          requestFocus: navigator.requestFocus,
          restorationScopeId: navigator.restorationScopeId,
        );
      },
    );
  }
}

@immutable
class SamplePage extends StatelessWidget {
  const SamplePage({super.key});

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: const Text('Pop gesture hack sample')),
      body: ListView.builder(
        itemBuilder: (context, index) {
          return ListTile(
            title: Text('$index'),
            subtitle: const Text('Tap to push page'),
            onTap: () {
              unawaited(
                Navigator.push<void>(
                  context,
                  MaterialPageRoute(builder: (context) => const SamplePage()),
                ),
              );
            },
          );
        },
      ),
    );
  }
}

import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:go_router/go_router.dart';

void main() => runApp(const AppRoot());

@immutable
class CustomNavigator extends Navigator {
  const CustomNavigator({
    super.key,
    super.pages,
    super.onPopPage,
    super.initialRoute,
    super.onGenerateInitialRoutes,
    super.onGenerateRoute,
    super.onUnknownRoute,
    super.transitionDelegate,
    super.reportsRouteUpdateToEngine,
    // >= 3.7.0
    // super.clipBehavior,
    super.observers,
    super.requestFocus,
    super.restorationScopeId,
  });

  @override
  CustomNavigatorState createState() => CustomNavigatorState();
}

class CustomNavigatorState extends NavigatorState {
  bool _originalTimingGestureInProgress = false;
  bool get originalTimingGestureInProgress => _originalTimingGestureInProgress;

  bool _gestureInProgress = false;

  @override
  bool get userGestureInProgress => _gestureInProgress;

  @override
  void didStartUserGesture() {
    _gestureInProgress = true;
    _originalTimingGestureInProgress = true;
    super.didStartUserGesture();
  }

  @override
  void didStopUserGesture() {
    _gestureInProgress = false;
    _originalTimingGestureInProgress = false;
    super.didStopUserGesture();
  }

  void _handlePointerEnd() => _gestureInProgress = false;

  @override
  Widget build(BuildContext context) {
    final child = super.build(context);

    return Listener(
      onPointerUp: (event) => _handlePointerEnd(),
      onPointerCancel: (event) => _handlePointerEnd(),
      child: child,
    );
  }
}

@immutable
class CustomPageTransitionsTheme extends PageTransitionsTheme {
  const CustomPageTransitionsTheme();

  static const _builder = CupertinoPageTransitionsBuilder();

  @override
  Widget buildTransitions<T>(
    PageRoute<T> route,
    BuildContext context,
    Animation<double> animation,
    Animation<double> secondaryAnimation,
    Widget child,
  ) {
    final originalPageTransition = _builder.buildTransitions<T>(
      route,
      context,
      animation,
      secondaryAnimation,
      child,
    );

    final navigator = route.navigator;
    if (navigator is! CustomNavigatorState) {
      return originalPageTransition;
    }

    final linearTransition = navigator.originalTimingGestureInProgress;

    if (route.fullscreenDialog) {
      return CupertinoFullscreenDialogTransition(
        primaryRouteAnimation: animation,
        secondaryRouteAnimation: secondaryAnimation,
        linearTransition: linearTransition,
        child: child,
      );
    } else {
      return CupertinoPageTransition(
        primaryRouteAnimation: animation,
        secondaryRouteAnimation: secondaryAnimation,
        linearTransition: linearTransition,
        child: (originalPageTransition as CupertinoPageTransition).child,
      );
    }
  }
}

Navigator _findNavigator(dynamic child) {
  if (child is Navigator) {
    return child;
  }
  // ignore: avoid_dynamic_calls
  return _findNavigator(child.child);
}

final _routes = GoRouter(
  routes: [
    ShellRoute(
      builder: (context, state, child) {
        final navigator = _findNavigator(child);

        return CustomNavigator(
          key: navigator.key,
          pages: navigator.pages,
          onPopPage: navigator.onPopPage,
          initialRoute: navigator.initialRoute,
          onGenerateInitialRoutes: navigator.onGenerateInitialRoutes,
          onGenerateRoute: navigator.onGenerateRoute,
          onUnknownRoute: navigator.onUnknownRoute,
          transitionDelegate: navigator.transitionDelegate,
          reportsRouteUpdateToEngine: navigator.reportsRouteUpdateToEngine,
          // >= 3.7.0
          // clipBehavior: navigator.clipBehavior,
          observers: navigator.observers,
          requestFocus: navigator.requestFocus,
          restorationScopeId: navigator.restorationScopeId,
        );
      },
      routes: [
        GoRoute(
          path: '/',
          builder: (context, state) => const RootPage(),
          routes: [
            GoRoute(
              path: 'second',
              builder: (context, state) => const SecondPage(),
            )
          ],
        ),
      ],
    )
  ],
);

@immutable
class AppRoot extends StatelessWidget {
  const AppRoot({super.key});

  @override
  Widget build(BuildContext context) {
    return MaterialApp.router(
      theme: ThemeData(
        pageTransitionsTheme: const CustomPageTransitionsTheme(),
      ),
      routerConfig: _routes,
    );
  }
}

@immutable
class RootPage extends StatelessWidget {
  const RootPage({super.key});

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text(
          'Pop gesture hack sample (GoRouter)',
        ),
      ),
      body: ListView.builder(
        itemBuilder: (context, index) {
          return ListTile(
            title: Text('$index'),
            subtitle: const Text('Tap to push page'),
            onTap: () => GoRouter.of(context).push('/second'),
          );
        },
      ),
    );
  }
}

@immutable
class SecondPage extends StatelessWidget {
  const SecondPage({super.key});

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text(
          'Pop gesture hack sample (GoRouter)',
        ),
      ),
      body: const Center(
        child: Text('Second page'),
      ),
    );
  }
}

import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';

void main() => runApp(const Root());

class Root extends StatelessWidget {
  const Root({super.key});

  @override
  Widget build(BuildContext context) {
    return const MaterialApp(home: First());
  }
}

class First extends StatefulWidget {
  const First({super.key});

  @override
  _FirstState createState() => _FirstState();
}

class _FirstState extends State<First> {
  var tappedTimes = 0;

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text('First'),
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            ElevatedButton(
              child: const Text('Go To Second'),
              onPressed: () {
                setState(() {
                  tappedTimes++;
                });
                Navigator.of(context).push(
                  CupertinoPageRoute(
                    builder: (BuildContext context) {
                      return const Second();
                    },
                  ),
                );
              },
            ),
            InkWell(
              child: Text('I\'m tapped $tappedTimes times'),
            )
          ],
        ),
      ),
    );
  }
}

class Second extends StatelessWidget {
  const Second({super.key});

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text('Second'),
      ),
      body: Container(),
    );
  }
}