{beamer_delegate}: [add] initializeFromParent option

- closes #447
slovnicki · Jan 20, 2022 · 340b474 · 340b474
1 parent 3325982
commit 340b474
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Showing 2 changed files with 10 additions and 3 deletions.
diff --git a/package/lib/src/beamer_delegate.dart b/package/lib/src/beamer_delegate.dart
@@ -32,6 +32,7 @@ class BeamerDelegate extends RouterDelegate<RouteInformation>
     this.beamBackTransitionDelegate = const ReverseTransitionDelegate(),
     this.onPopPage,
     this.setBrowserTabTitle = true,
+    this.initializeFromParent = true,
     this.updateFromParent = true,
     this.updateParent = true,
     this.clearBeamingHistoryOn = const <String>{},
@@ -58,7 +59,7 @@ class BeamerDelegate extends RouterDelegate<RouteInformation>
   BeamerDelegate? get parent => _parent;
   set parent(BeamerDelegate? parent) {
     _parent = parent!;
-    _initializeFromParent();
+    _initialize();
     if (updateFromParent) {
       _parent!.addListener(_updateFromParent);
     }
@@ -196,6 +197,11 @@ class BeamerDelegate extends RouterDelegate<RouteInformation>
   /// be used to set and update the browser tab title.
   final bool setBrowserTabTitle;
 
+  /// Whether to take [configuration] from parent when this is created.
+  ///
+  /// If false, the [initialPath] will be used.
+  final bool initializeFromParent;
+
   /// Whether to call [update] when parent notifies listeners.
   ///
   /// This means that navigation can be done either on parent or on this
@@ -900,12 +906,12 @@ class BeamerDelegate extends RouterDelegate<RouteInformation>
     return route.didPop(result);
   }
 
-  void _initializeFromParent() {
+  void _initialize() {
     final parent = _parent;
     if (parent == null) {
       return;
     }
-    configuration = updateFromParent
+    configuration = initializeFromParent
         ? parent.configuration.copyWith()
         : parent.configuration.copyWith(location: initialPath);
     var location = locationBuilder(

diff --git a/package/test/beamer_delegate_test.dart b/package/test/beamer_delegate_test.dart
@@ -371,6 +371,7 @@ void main() {
     testWidgets("navigation on parent doesn't update nested Beamer",
         (tester) async {
       final childDelegate = BeamerDelegate(
+        initializeFromParent: false,
         updateFromParent: false,
         locationBuilder: RoutesLocationBuilder(
           routes: {