 Label = ReactBootstrap.Label
 PanelGroup = ReactBootstrap.PanelGroup
 Row = ReactBootstrap.Row
+ListGroup = ReactBootstrap.ListGroup
+ListGroupItem = ReactBootstrap.ListGroupItem
 
 update = React.addons.update
 

          <ProblemFilter onSortChange={@onSortChange} filter="" onFilterChange={@onFilterChange}/>
        </Row>
        <Row>
          <ProblemClassifier/>
        </Row>
      </Col>
      <Col xs={9} md={9}>

    @setState update @state,
      activeSort: $set: {name: name, ascending: ascending}

  setClassifier: (state, classifier) ->
    @setState update @state,
      problemClassifier: $set: classifier

  filterProblems: (problems) ->
    visibleProblems = _.filter problems, ((problem) ->
      (@state.filterRegex.exec problem.name) != null and @state.problemClassifier problem
