ctreePages function

Implementation

List<Widget> ctreePages(
  WidgetRef ref,
) {
  String stdout = ref.watch(stdoutProvider);

  // Begin the list of pages to display with the introduction markdown text.

  List<Widget> pages = [];

  // Temporary storage for page content or image.

  String content = '';
  String image = '';

  ////////////////////////////////////////////////////////////////////////

  // Default tree text.

  content = rExtract(stdout, 'print(model_ctree)');

  if (content.isNotEmpty) {
    pages.add(
      TextPage(
        title: '''

        # Decision Tree Model

        Built using [partykit::ctree()](https://www.rdocumentation.org/packages/partykit/topics/ctree).

        ''',
        content: '\n$content',
      ),
    );
  }

  ////////////////////////////////////////////////////////////////////////

  // Tree visualisation.

  image = '$tempDir/model_tree_ctree.svg';

  if (imageExists(image)) {
    pages.add(
      ImagePage(
        title: '''

        # Decision Tree Visualisation

        Built using
        [partykit::plot()](https://www.rdocumentation.org/packages/partykit/topics/party-plot).

        ''',
        path: image,
      ),
    );
  }

  ////////////////////////////////////////////////////////////////////////

  return pages;
}