feat: Added routeBuilder to CustomTransition

flutter_modular/lib/src/presenter/models/route.dart

@@ -211,14 +211,16 @@ class CustomTransition {
     Animation<double>,
     Animation<double>,
   )? pageBuilder;
+  final RouteBuilder? routeBuilder;
   final Duration transitionDuration;
   final Duration reverseTransitionDuration;
   final bool opaque;
 
   CustomTransition(
       {required this.transitionBuilder,
+      this.pageBuilder,
+      this.routeBuilder,
       this.transitionDuration = const Duration(milliseconds: 300),
       this.reverseTransitionDuration = const Duration(milliseconds: 300),
-      this.opaque = true,
-      this.pageBuilder});
+      this.opaque = true});
 }

flutter_modular/lib/src/presenter/navigation/modular_page.dart

@@ -42,6 +42,10 @@ class ModularPage<T> extends Page<T> {
     if (transitionType == TransitionType.custom &&
         route.customTransition != null) {
       final transition = route.customTransition!;
+      if (transition.routeBuilder != null) {
+        return transition.routeBuilder!((context) => page, this) as Route<T>;
+      }
+
       return PageRouteBuilder<T>(
         pageBuilder: transition.pageBuilder ?? (context, _, __) => page,
         opaque: transition.opaque,

flutter_modular/test/src/presenter/navigation/modular_page_test.dart

@@ -173,4 +173,25 @@ void main() {
     expect(page.createRoute(context), isA<Route>());
     expect(page.route.isFullscreenDialog, equals(true));
   });
+
+  test('createRoute custom route builder', () {
+    final args = ModularArguments.empty();
+    final context = BuildContextMock();
+    final route = ParallelRouteMock();
+    final widget = Container();
+    when(() => route.child).thenReturn((_) => widget);
+    when(() => route.uri).thenReturn(Uri.parse('/'));
+    when(() => route.transition).thenReturn(TransitionType.custom);
+    when(() => route.customTransition).thenReturn(CustomTransition(
+      transitionBuilder: (_, __, ___, child) => child,
+      routeBuilder: (builder, settings) => CupertinoSheetRoute(
+        builder: builder,
+        settings: settings,
+      ),
+    ));
+
+    final page = ModularPage(args: args, flags: ModularFlags(), route: route);
+    final pageRoute = page.createRoute(context);
+    expect(pageRoute, isA<CupertinoSheetRoute>());
+  });
 }