void _init()

in lib/embed.dart [522:584]
49 lines of code
9 McCabe index (conditional complexity)

  void _init() {
    deps[GistLoader] = GistLoader.defaultFilters();
    deps[Analytics] = Analytics();

    final channel = queryParams.channel;
    if (Channel.urlMapping.keys.contains(channel)) {
      dartServices.rootUrl = Channel.urlMapping[channel]!;
    }

    context = EmbedContext(
        userCodeEditor, testEditor, solutionEditor, htmlEditor, cssEditor);

    editorFactory.registerCompleter(
        'dart', DartCompleter(dartServices, userCodeEditor.document));

    context.onDartDirty.listen((_) => busyLight.on());
    context.onDartReconcile.listen((_) => performAnalysis());

    initKeyBindings();

    var horizontal = true;
    final webOutput = querySelector('#web-output')!;
    List<Element> splitterElements;
    if (options.mode == EmbedMode.flutter || options.mode == EmbedMode.html) {
      final editorAndConsoleContainer =
          querySelector('#editor-and-console-container')!;
      splitterElements = [editorAndConsoleContainer, webOutput];
    } else if (options.mode == EmbedMode.inline) {
      final editorContainer = querySelector('#editor-container')!;
      final consoleView = querySelector('#console-view')!;
      consoleView.removeAttribute('hidden');
      splitterElements = [editorContainer, consoleView];
      horizontal = false;
    } else {
      final editorContainer = querySelector('#editor-container')!;
      final consoleView = querySelector('#console-view')!;
      consoleView.removeAttribute('hidden');
      splitterElements = [editorContainer, consoleView];
    }

    splitter = flexSplit(
      splitterElements,
      horizontal: horizontal,
      gutterSize: defaultSplitterWidth,
      // set initial sizes (in percentages)
      sizes: [initialSplitPercent, (100 - initialSplitPercent)],
      // set the minimum sizes (in pixels)
      minSize: [100, 100],
    );

    listenForResize(splitterElements[0]);

    if (gistId!.isNotEmpty || sampleId.isNotEmpty || githubParamsPresent) {
      _loadAndShowGist(analyze: false);
    }

    if (gistId!.isEmpty) {
      openInDartPadButton.toggleAttr('hidden', true);
    }

    // set enabled/disabled state of various buttons
    editorIsBusy = false;
  }