LCOV - code coverage report
Current view: top level - lib/src/pages - standard.dart (source / functions) Hit Total Coverage
Test: lcov.info Lines: 13 23 56.5 %
Date: 2021-04-04 17:06:32 Functions: 0 0 -

          Line data    Source code
       1             : part of '../../routemaster.dart';
       2             : 
       3             : /// A page that can create a state.
       4             : abstract class StatefulPage<T> extends Page<T> {
       5             :   PageState createState(Routemaster delegate, RouteInfo info);
       6             : 
       7           1 :   @override
       8             :   Route<T> createRoute(BuildContext context) {
       9           1 :     throw UnimplementedError(
      10             :         'Stateful pages do not directly create routes. Do not call createRoute on them directly.');
      11             :   }
      12             : }
      13             : 
      14             : /// A wrapper around a page object.
      15             : abstract class PageWrapper {
      16             :   /// Information about the current route.
      17             :   RouteInfo get routeInfo;
      18             : 
      19             :   /// Called when popping a route stack. Returns `true` if this page wrapper
      20             :   /// has been able to pop a page, otherwise `false`.
      21             :   Future<bool> maybePop();
      22             : 
      23             :   /// Returns this page, and any descendant pages below it in the navigation
      24             :   /// hierarchy.
      25             :   Iterable<PageWrapper> getCurrentPages();
      26             : 
      27             :   /// See if this page can consume the list of [pages] as children. For instance
      28             :   /// a tab page could accept the pages and put them in one of its tab's stacks.
      29             :   bool maybeSetChildPages(Iterable<PageWrapper> pages);
      30             : 
      31             :   /// Gets the actual Flutter [Page] object for passing to a [Navigator].
      32             :   Page createPage();
      33             : }
      34             : 
      35             : /// A page's state, similar to [State] for a [StatefulWidget]. For instance,
      36             : /// maintains the current index for a tabbed page.
      37             : abstract class PageState extends PageWrapper {}
      38             : 
      39             : /// A page that wraps other pages in order to provide more functionality.
      40             : ///
      41             : /// For example, [Guarded] adds validation functionality for routes.
      42             : abstract class ProxyPage<T> extends Page<T> {
      43             :   final Page<T> child;
      44             : 
      45           3 :   ProxyPage({required this.child});
      46             : 
      47           1 :   @override
      48             :   Route<T> createRoute(BuildContext context) {
      49           2 :     return child.createRoute(context);
      50             :   }
      51             : }
      52             : 
      53             : /// A wrapper for normal, non-stateless pages that allows us to treat them like
      54             : /// stateful ones.
      55             : class StatelessPage extends PageWrapper {
      56          10 :   StatelessPage({
      57             :     required this.routeInfo,
      58             :     required this.page,
      59          10 :   }) : assert(page is! Redirect);
      60             : 
      61             :   final Page page;
      62             : 
      63             :   @override
      64             :   final RouteInfo routeInfo;
      65             : 
      66             :   @override
      67             :   Iterable<PageWrapper> getCurrentPages() sync* {
      68             :     yield this;
      69             :   }
      70             : 
      71           2 :   @override
      72           2 :   Future<bool> maybePop() => SynchronousFuture(false);
      73             : 
      74           5 :   @override
      75             :   bool maybeSetChildPages(Iterable<PageWrapper> pages) => false;
      76             : 
      77          10 :   @override
      78          10 :   Page createPage() => page;
      79             : }
      80             : 
      81             : /// A fake page state to wrap redirects
      82             : class _RedirectWrapper extends PageWrapper {
      83             :   final Redirect redirectPage;
      84             : 
      85           2 :   _RedirectWrapper(this.redirectPage);
      86             : 
      87           0 :   @override
      88             :   Iterable<PageWrapper> getCurrentPages() {
      89           0 :     throw UnimplementedError();
      90             :   }
      91             : 
      92           0 :   @override
      93             :   Future<bool> maybePop() {
      94           0 :     throw UnimplementedError();
      95             :   }
      96             : 
      97           0 :   @override
      98             :   bool maybeSetChildPages(Iterable<PageWrapper> pages) {
      99           0 :     throw UnimplementedError();
     100             :   }
     101             : 
     102           0 :   @override
     103           0 :   RouteInfo get routeInfo => throw UnimplementedError();
     104             : 
     105           0 :   @override
     106             :   Page createPage() {
     107           0 :     throw UnimplementedError();
     108             :   }
     109             : }

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