anchor.diff:                  onPressed: () =>
                       Navigator.of(context).push(new SettingsActivity(_user)).then((_) =>
                           setState(_changeTheBossOfThisGym))),
  -            _debugDataSourceButton(),
             ],
             bottom: new TabBar(
               controller: _tabController,
  
positive.code:             primary: false,
              padding: new EdgeInsets.symmetric(vertical: 8.0),
              children: new List.generate(_user.totalCompleted ~/ 200 + 1, (page) =>
              new ListTile(
                  onTap: () {
                    if (null != _user) {
                      showDialog(context: context, child: new RefreshProgressDialog(
                          CodeWarsColors.main.shade100, width: 100, height: 100),
                          barrierDismissible: false);
                      get(CodeWarsAPI.getCompletedKataPaginated(_user.username, page))
                        ..then((val) {
                          _pop();
                          Navigator.of(context).push(new CompletedActivity(val.body, page));
                        })
                        ..timeout(new Duration(seconds: 10))
                        ..catchError(() => setState(() => _pop()));
                    }
                  },
                  title: new Text("Completed ${page * 200 + 1} ~ ${(page + 1) * 200}"))),
              shrinkWrap: true,
            ));
      }
  
negative.code:         }
        },
        information: "Refresh",);
      _allPages = <_Page>[_me, _kata, _friends];
      _tabController = new TabController(vsync: this, length: _allPages.length);
      _tabController.addListener(_handleTabSelection);
      _selectedPage = _me;
  