Hack Alpaca checkbox fields to validate against JSON Schema

gistfile1.js

/* Include the following functions to override those in the appropriate places in the Alpaca.js code */

    //Alpaca.ControlField = {
        
        validationList: function(){
          var list = this.schema.enum;
          if(!list) list = this.schema.list;          
          return list;
        },

        handleValidate: function() {
            var baseStatus = this.base();

            var valInfo = this.validation;

            var status = this._validateEnum();
            var list = this.validationList();
            
            valInfo["invalidValueOfEnum"] = {
                "message": status ? "" : Alpaca.substituteTokens(this.view.getMessage("invalidValueOfEnum"), [list.join(',')]),
                "status": status
        }

            return baseStatus && valInfo["invalidValueOfEnum"]["status"];
        };
        
    //}
        
      //Alpaca.Fields.CheckBoxField = {
        getEnum: function() 
        {
                var array = [];
                var list = this.validationList();
                if (list)
                {
                    array = list;
                }
                

                return array;
            },
            
            _validateEnum: function()
            {
                var self = this;

                if (!self.options.multiple)
                {
                    return true;
                }

                var val = self.getValue();
                if (!self.schema.required && Alpaca.isValEmpty(val))
                {
                    return true;
                }

                // if val is a string, convert to array
                if (typeof(val) == "string")
                {
                    val = val.split(",");
                }
                var list = this.validationList();     
                return Alpaca.anyEquality(val, list);
            }
      //}