/**
 * The base element for all visual elements of webvowl.
 */
module.exports = (function (){
  
  var Base = function ( graph ){
    // Basic attributes
    var equivalents = [],
      id,
      label,
      type,
      iri,
      baseIri,
      // Additional attributes
      annotations,
      attributes = [],
      backgroundColor,
      comment,
      description,
      equivalentBase,
      visualAttributes = [],
      // Style attributes
      focused = false,
      indications = [],
      mouseEntered = false,
      styleClass,
      visible = true,
      
      backupLabel,
      // Other
      languageTools = require("../util/languageTools")();
    
    
    this.backupLabel = function ( label ){
      if ( !arguments.length ) return backupLabel;
      backupLabel = label;
    };
    // Properties
    this.attributes = function ( p ){
      if ( !arguments.length ) return attributes;
      attributes = p;
      return this;
    };
    
    this.annotations = function ( p ){
      if ( !arguments.length ) return annotations;
      annotations = p;
      return this;
    };
    
    this.redrawElement = function (){
      // TODO: OVERLOADED BY INDIVIDUAL ELEMENTS
    };
    
    this.backgroundColor = function ( p ){
      if ( !arguments.length ) return backgroundColor;
      backgroundColor = p;
      return this;
    };
    
    this.baseIri = function ( p ){
      if ( !arguments.length ) return baseIri;
      baseIri = p;
      return this;
    };
    
    this.comment = function ( p ){
      if ( !arguments.length ) return comment;
      comment = p;
      return this;
    };
    
    this.description = function ( p ){
      if ( !arguments.length ) return description;
      description = p;
      return this;
    };
    
    this.equivalents = function ( p ){
      if ( !arguments.length ) return equivalents;
      equivalents = p || [];
      return this;
    };
    
    this.equivalentBase = function ( p ){
      if ( !arguments.length ) return equivalentBase;
      equivalentBase = p;
      return this;
    };
    
    this.focused = function ( p ){
      if ( !arguments.length ) return focused;
      focused = p;
      return this;
    };
    
    this.id = function ( p ){
      if ( !arguments.length ) return id;
      id = p;
      return this;
    };
    
    this.indications = function ( p ){
      if ( !arguments.length ) return indications;
      indications = p;
      return this;
    };
    
    this.iri = function ( p ){
      if ( !arguments.length ) return iri;
      iri = p;
      return this;
    };
    
    this.label = function ( p ){
      if ( !arguments.length ) return label;
      label = p;
      return this;
    };
    
    this.mouseEntered = function ( p ){
      if ( !arguments.length ) return mouseEntered;
      mouseEntered = p;
      return this;
    };
    
    this.styleClass = function ( p ){
      if ( !arguments.length ) return styleClass;
      styleClass = p;
      return this;
    };
    
    this.type = function ( p ){
      if ( !arguments.length ) return type;
      type = p;
      return this;
    };
    
    this.visible = function ( p ){
      if ( !arguments.length ) return visible;
      visible = p;
      return this;
    };
    
    this.visualAttributes = function ( p ){
      if ( !arguments.length ) return visualAttributes;
      visualAttributes = p;
      return this;
    };
    
    
    this.commentForCurrentLanguage = function (){
      return languageTools.textInLanguage(this.comment(), graph.language());
    };
    
    /**
     * @returns {string} the css class of this node..
     */
    this.cssClassOfNode = function (){
      return "node" + this.id();
    };
    
    this.descriptionForCurrentLanguage = function (){
      return languageTools.textInLanguage(this.description(), graph.language());
    };
    
    this.defaultLabel = function (){
      return languageTools.textInLanguage(this.label(), "default");
    };
    
    this.indicationString = function (){
      return this.indications().join(", ");
    };
    
    this.labelForCurrentLanguage = function (){
      var preferredLanguage = graph && graph.language ? graph.language() : null;
      return languageTools.textInLanguage(this.label(), preferredLanguage);
    };
  };
  
  Base.prototype.constructor = Base;
  
  Base.prototype.equals = function ( other ){
    return other instanceof Base && this.id() === other.id();
  };
  
  Base.prototype.toString = function (){
    return this.labelForCurrentLanguage() + " (" + this.type() + ")";
  };
  
  
  return Base;
}());