git-touch-android-ios-app/lib/widgets/object_tree.dart

import 'package:filesize/filesize.dart';
import 'package:flutter/material.dart';
import 'package:git_touch/utils/utils.dart';
import 'package:git_touch/widgets/table_view.dart';
import 'package:primer/primer.dart';
import 'package:file_icon/file_icon.dart';

class ObjectTreeItem {
  final String url;
  final String downloadUrl;
  final String name;
  final String type;
  final int size;
  ObjectTreeItem({
    @required this.name,
    @required this.url,
    @required this.downloadUrl,
    @required this.type,
    this.size,
  });
}

class ObjectTree extends StatelessWidget {
  final Iterable<ObjectTreeItem> items;
  ObjectTree({@required this.items});

  Widget _buildIcon(ObjectTreeItem item) {
    switch (item.type) {
      case 'blob': // github gql, gitlab
      case 'file': // github rest, gitea
      case 'commit_file': // bitbucket
        return FileIcon(item.name, size: 36);
      case 'tree': // github gql, gitlab
      case 'dir': // github rest, gitea
      case 'commit_directory': // bitbucket
        return Icon(
          Octicons.file_directory,
          color: PrimerColors.blue300,
          size: 24,
        );
      case 'commit':
        return Icon(
          Octicons.file_submodule,
          color: PrimerColors.blue300,
          size: 24,
        );
      default:
        throw 'object type error';
    }
  }

  @override
  Widget build(BuildContext context) {
    return TableView(
      hasIcon: true,
      items: [
        for (var item in items)
          TableViewItem(
            leftWidget: _buildIcon(item),
            text: Text(item.name),
            rightWidget: item.size == null ? null : Text(filesize(item.size)),
            url: [
              // Let system browser handle these files
              //
              // TODO:
              // Unhandled Exception: PlatformException(Error, Error while launching
              // https://github.com/flutter/flutter/issues/49162

              // Docs
              'pdf', 'docx', 'doc', 'pptx', 'ppt', 'xlsx', 'xls',
              // Fonts
              'ttf', 'otf', 'eot', 'woff', 'woff2',
              'svg',
            ].contains(item.name.ext)
                ? item.downloadUrl
                : item.url,
            hideRightChevron: item.size != null,
          )
      ],
    );
  }
}