Widget build()

in release_dashboard/lib/widgets/progression.dart [142:226]
68 lines of code
7 McCabe index (conditional complexity)

  Widget build(BuildContext context) {
    Map<ConductorStatusEntry, Object>? releaseStatus = context.watch<StatusState>().releaseStatus;

    // If there is no test state, start from the first step: creating a release.
    final int currentStep =
        releaseStatus == null ? 0 : MainProgression.stepPosition[releaseStatus[ConductorStatusEntry.currentPhase]]!;

    // The values of the map are widgets that each [Step] renders as its content.
    const Map<Object, Widget> stepWidgetMapping = <Object, Widget>{
      ReleaseSteps.initializeRelease: CreateReleaseSubsteps(),
      pb.ReleasePhase.APPLY_ENGINE_CHERRYPICKS: CherrypicksSubsteps(repository: Repositories.engine),
      pb.ReleasePhase.CODESIGN_ENGINE_BINARIES: MergePrSubsteps(repository: Repositories.engine),
      pb.ReleasePhase.APPLY_FRAMEWORK_CHERRYPICKS: CherrypicksSubsteps(repository: Repositories.framework),
      pb.ReleasePhase.PUBLISH_VERSION: MergePrSubsteps(repository: Repositories.framework),
      pb.ReleasePhase.PUBLISH_CHANNEL: PublishReleaseSubsteps(),
      pb.ReleasePhase.VERIFY_RELEASE: VerifyReleaseSubsteps(),
      pb.ReleasePhase.RELEASE_COMPLETED: ReleaseCompleted(),
    };

    if (_dialogueContent != null) {
      // Whenever [StartContext] or [NextContext]'s prompt returns a message, it would update
      // [_dialogueContent] which triggers the [dialogPrompt] below with the
      // message displayed as the content. The prompt will also initialize a completer.
      // If [dialogPrompt]'s 'Yes' is pressed, complete the completer
      // with 'true' (equivalent of replying 'y' to the prompt in the command line when using
      // the CLI version). Otherwise, complete with 'false' (equivalent of replying 'n' to
      // the prompt in the command line when using the CLI version).
      Future.delayed(Duration.zero, () {
        dialogPrompt(
          context: context,
          title: const Text(
              'Please read the instructions below carefully. Some processes are disruptive and irreversible.'),
          content: SelectableText(_dialogueContent!),
          leftButtonTitle: 'No',
          rightButtonTitle: 'Yes',
          leftButtonCallback: () async {
            if (_dialogueCallback != null) {
              _dialogueCallback!.complete(false);
            }
            // Have to set the message to null, otherwise the [dialogPrompt] gets displayed again.
            dialogPromptChanger(null, null);
          },
          rightButtonCallback: () async {
            if (_dialogueCallback != null) {
              _dialogueCallback!.complete(true);
            }
            // Have to set the message to null, otherwise the [dialogPrompt] gets displayed again.
            dialogPromptChanger(null, null);
          },
        );
      });
    }

    return Expanded(
      child: Scrollbar(
        isAlwaysShown: true,
        controller: _scrollController,
        child: ListView(
          controller: _scrollController,
          padding: const EdgeInsets.symmetric(vertical: 12.0),
          physics: const ClampingScrollPhysics(),
          children: <Widget>[
            const ConductorStatus(),
            const SizedBox(height: 20.0),
            Stepper(
              controlsBuilder: (BuildContext context, ControlsDetails details) => Row(),
              physics: const ScrollPhysics(),
              currentStep: currentStep,
              steps: <Step>[
                for (MapEntry step in MainProgression.stepPosition.entries)
                  Step(
                    title: Text(MainProgression.stepTitles[step.key]!),
                    // Only renders the current step's content.
                    content: currentStep == step.value ? stepWidgetMapping[step.key]! : Container(),
                    // All previously completed steps and the current steps are active.
                    isActive: currentStep >= step.value,
                    state: handleStepState(currentStep, step.value),
                  ),
              ],
            ),
          ],
        ),
      ),
    );
  }