Old state shown on previous pages on active inhibitor change

[tamslo]

Desired behavior: for the gene report and drug search tab, data should update in the respective inactive tab after an active medication change (optimally; always also possible)

Currently implementing: solution using ChangeNotifier

• Add provider and change notifier for active medications
• Use consumers everywhere where UserData.instance.activeDrugNames is used to manipulate activeMedications
• Use consumers everywhere where UserData.instance.activeDrugNames is used in the UI
• Test in simulator
• Adapt/write tests

Possible solutions

• Add maintainState: false toAutoRoute definitions in lib/report/module.dart and lib/search/module.dart (see StackOverflow)
  • Only in empty root route: updates state but always goes back to main route, which is not really the desired behavior, but might work if no other solution does
  • Only in child routes: does not change behavior on tab change; introduces bug that drug list is filtered by name but name is not present anymore (it does not go back to the full list), additionally throws unhandled exceptions
  • In all routes: combination of cases above
• Manipulate router stack in lib/common/pages/drug/widgets/annotation_cards/drug.dart (inside CupertinoDialogAction:onPressed)
  • Navigator.popUntil(context, (route) => false);: Removes everything from the router (including tabs) and throws unhandled exceptions
  • Get current tab router and navigate to index (see below), while adding maintainState: false to root child routes (see above): works perfectly for report page reset but not drugs page, probably due to filter state; also not optimal from usability perspective, would be better if data just updates
  • Refactor routes to only get minimum information (e.g., drug name or gene name) and always fetch further information dynamically (need to test whether re-build is triggered then): _not tried yet, probably need to use maintainState and will have same problems as above
  • Use change notifier (see example): trying out...

Code that does not work but might be useful in the future: get dependent tab and navigate to root:

class TabInfo {
  TabInfo({
    required this.label,
    required this.index,
  });
  String label;
  int index;
}

TabRouteDefinition getTabToReset(BuildContext context) {
  final interdependentRouteTypes = [ ReportRouter, SearchRouter ];
  final tabsRouter = context.router.childControllers[0] as TabsRouter;
  final tabRouteDefintion = getTabRoutesDefinition(context);
  final activeRouteType =
    tabRouteDefintion[tabsRouter.activeIndex].pageRouteInfo.runtimeType;
  final routeTypeToReset = interdependentRouteTypes.filter(
    (route) => route != activeRouteType
  ).first;
  return tabRouteDefintion.filter(
    (routeDefinition) =>
      routeDefinition.pageRouteInfo.runtimeType == routeTypeToReset
  ).first;
}

String getTabLabelToReset(BuildContext context) {
  return getTabToReset(context).label;
}

void resetDependentTab(BuildContext context) {
  final tabsRouter = context.router.childControllers[0] as TabsRouter;
  final tabRoutesDefintion = getTabRoutesDefinition(context);
  final dependentTab = getTabToReset(context);
  final dependentTabIndex = tabRoutesDefintion.indexWhere(
    (routeDefinition) => routeDefinition.label == dependentTab.label  
  );
  tabsRouter.stackRouterOfIndex(dependentTabIndex)?.popUntilRoot();
}