var AbsoluteTextElement = require("../../util/AbsoluteTextElement");
var BoxArrowLink = require("../links/BoxArrowLink");
var RoundNode = require("./RoundNode");
var drawTools = require("../drawTools")();

module.exports = (function (){
  
  var o = function ( graph ){
    RoundNode.apply(this, arguments);
    
    var that = this,
      superHoverHighlightingFunction = that.setHoverHighlighting,
      superPostDrawActions = that.postDrawActions;
    
    this.setHoverHighlighting = function ( enable ){
      superHoverHighlightingFunction(enable);
      
      // Highlight links pointing to included nodes when hovering the set operator
      that.links()
        .filter(function ( link ){
          return link instanceof BoxArrowLink;
        })
        .filter(function ( link ){
          return link.domain().equals(that);
        })
        .forEach(function ( link ){
          link.property().setHighlighting(enable);
        });
    };
    
    this.draw = function ( element ){
      that.nodeElement(element);
      
      drawTools.appendCircularClass(element, that.actualRadius(),
        that.collectCssClasses().join(" "),
        that.labelForCurrentLanguage(), that.backgroundColor());
    };
    
    this.postDrawActions = function (){
      superPostDrawActions();
      that.textBlock().remove();
      
      var textElement = new AbsoluteTextElement(that.nodeElement(), that.backgroundColor());
      
      var equivalentsString = that.equivalentsString();
      var offsetForFollowingEquivalents = equivalentsString ? -30 : -17;
      var suffixForFollowingEquivalents = equivalentsString ? "," : "";
      textElement.addText(that.labelForCurrentLanguage(), offsetForFollowingEquivalents, "",
        suffixForFollowingEquivalents);
      
      textElement.addEquivalents(equivalentsString, -17);
      
      
      if ( !graph.options().compactNotation() ) {
        
        if ( that.indicationString().length > 0 ) {
          textElement.addSubText(that.indicationString(), 17);
          textElement.addInstanceCount(that.individuals().length, 30);
        } else {
          textElement.addInstanceCount(that.individuals().length, 17);
        }
      } else {
        textElement.addInstanceCount(that.individuals().length, 17);
      }
      
      that.textBlock(textElement);
    };
  };
  o.prototype = Object.create(RoundNode.prototype);
  o.prototype.constructor = o;
  
  return o;
}());