text: import { t } from '../util/locale';
  import { behaviorDrawWay } from '../behavior/draw_way';
  
  
  export function modeDrawArea(context, wayID, startGraph, baselineGraph, button) {
      var mode = {
          button: button,
          id: 'draw-area'
      };
  
      var behavior;
  
      mode.wayID = wayID;
  
      mode.enter = function() {
          var way = context.entity(wayID);
  
          behavior = behaviorDrawWay(context, wayID, undefined, mode, startGraph, baselineGraph)
              .tail(t('modes.draw_area.tail'));
  
          var addNode = behavior.addNode;
  
          behavior.addNode = function(node, d) {
              var length = way.nodes.length;
              var penultimate = length > 2 ? way.nodes[length - 2] : null;
  
              if (node.id === way.first() || node.id === penultimate) {
                  behavior.finish();
              } else {
                  addNode(node, d);
              }
          };
  
          context.install(behavior);
      };
  
  
      mode.exit = function() {
          context.uninstall(behavior);
      };
  
  
      mode.selectedIDs = function() {
          return [wayID];
      };
  
  
      mode.activeID = function() {
          return (behavior && behavior.activeID()) || [];
      };
  
  
      return mode;
  }
  