@Override
 public void stateChanged() {
   _view.updateCampaignState();
 }
 @Override
 public void campaignSelected(Campaign selectedCampaign) {
   ClassFactory.setCampaign(selectedCampaign);
   _view.setCampaignDescription(ClassFactory.getCampaign().getDescription());
   _view.updateCampaignState();
 }