defaultOnPopPage static method

bool defaultOnPopPage(BuildContext context, BeamerDelegate<BeamState> delegate, BeamPage poppedPage)

The default pop behavior for BeamPage.

Implementation

static bool defaultOnPopPage(
  BuildContext context,
  BeamerDelegate delegate,
  BeamPage poppedPage,
) {
  final location = delegate.currentBeamLocation;
  final previousBeamState = delegate.beamStateHistory.length > 1
      ? delegate.beamStateHistory[delegate.beamStateHistory.length - 2]
      : null;

  final pathBlueprintSegments =
      List<String>.from(location.state.pathBlueprintSegments);
  final pathParameters =
      Map<String, String>.from(location.state.pathParameters);
  final pathSegment = pathBlueprintSegments.removeLast();
  if (pathSegment[0] == ':') {
    pathParameters.remove(pathSegment.substring(1));
  }

  var beamState = BeamState(
    pathBlueprintSegments: pathBlueprintSegments,
    pathParameters: pathParameters,
    queryParameters:
        poppedPage.keepQueryOnPop ? location.state.queryParameters : {},
    data: location.state.data,
  );

  if (beamState.uri.path == previousBeamState?.uri.path &&
      !poppedPage.keepQueryOnPop) {
    beamState = beamState.copyWith(
      queryParameters: previousBeamState?.queryParameters,
    );
  }

  delegate.removeLastBeamState();

  location.update((state) => beamState);
  return true;
}