Revert "refactor: Replace deprecated WillPopScope (#1604)"

This reverts commit ef9b1d5.

Why is this so hard to implement??? Are we missing something??

lib/services/manager_api.dart

@@ -619,8 +619,8 @@ class ManagerAPI {
  return showDialog(
  barrierDismissible: false,
  context: context,
- builder: (context) => PopScope(
- canPop: false,
+ builder: (context) => WillPopScope(
+ onWillPop: () async => false,
  child: AlertDialog(
  title: Text(t.warning),
  content: ValueListenableBuilder(

lib/ui/views/installer/installer_view.dart

@@ -16,9 +16,12 @@ class InstallerView extends StatelessWidget {
  return ViewModelBuilder<InstallerViewModel>.reactive(
  onViewModelReady: (model) => model.initialize(context),
  viewModelBuilder: () => InstallerViewModel(),
- builder: (context, model, child) => PopScope(
- onPopInvoked: (bool didPop) => model.onWillPop(context),
- canPop: false,
+ builder: (context, model, child) => WillPopScope(
+ /* 
+ TODO(any): migrate to [PopScope],
+ we've tried to migrate it two times but 
+ reverted it because we couldn't exit out of the screen. 
+ */
  child: SafeArea(
  top: false,
  bottom: model.isPatching,
@@ -108,6 +111,7 @@ class InstallerView extends StatelessWidget {
  ),
  ),
  ),
+ onWillPop: () => model.onWillPop(context),
  ),
  );
  }

lib/ui/views/navigation/navigation_view.dart

@@ -13,10 +13,14 @@ class NavigationView extends StatelessWidget {
  return ViewModelBuilder<NavigationViewModel>.reactive(
  onViewModelReady: (model) => model.initialize(context),
  viewModelBuilder: () => locator<NavigationViewModel>(),
- builder: (context, model, child) => PopScope(
- canPop: model.currentIndex == 0,
- onPopInvoked: (bool didPop) => {
- if (!didPop) model.setIndex(0),
+ builder: (context, model, child) => WillPopScope(
+ onWillPop: () async {
+ if (model.currentIndex == 0) {
+ return true;
+ } else {
+ model.setIndex(0);
+ return false;
+ }
  },
  child: Scaffold(
  body: PageTransitionSwitcher(