var Validator = Class.create();
Validator.prototype = {

  initialize: function(id) {
    this.id = id;
    this.valid = true;
    this.errors = new Hash();
  },

  clear: function() {
    this.valid = true;
    this.errors = new Hash();
  },

  error_count: function() {
    return this.errors.toArray().length;
  },

  remove_error: function(key) {
    this.errors.unset(key);
    if (this.error_count() == 0) {
      this.valid = true;
    }
  },

  validate_presence_of: function(field, msg) {
    if ($F(field)=="") {
      this.valid = false;
      this.errors.set(field, msg);
    }
  },

  validate_format_of: function(field, pattern, msg) {
    if ($F(field)!="") {
      if (!pattern.test($F(field))) {
        this.valid = false;
        this.errors.set(field, msg);
      }
    }
  },

	validate_barcode: function(field, array, msg) {
		var code = MD5(stripIt($F(field)));
		var is_valid = false;
		
		array.each(function(obj){
			if (obj==code) {
				is_valid = true;
			}
		}.bind(this));
		
		if (!is_valid) {
			this.valid = false;
      this.errors.set(field, msg);
		}
	},

  validate_presence_and_format_of: function(field, pattern, msg) {
    this.validate_presence_of(field, msg);
    this.validate_format_of(field, pattern, msg)
  },

  validate_checkbox_or_radio_selected: function(field, msg) {
    valid = false;
    $A(document.getElementsByName(field)).each(function(input){if(input.checked)valid=true;});
    if (!valid) {
      this.valid = false;
      this.errors.set(field, msg);
    }
  },

  validate_confirmation_of: function(field1, field2, msg) {
    if ($F(field1)!=$F(field2)) {
      this.valid = false;
      this.errors.set(field1+'_'+field2, msg);
    }
  },

  return_all_errors: function() {
    var msg = "";
    this.errors.each(function(error) {
       msg += " * " + error.value + "\n";
    });
    return msg;
  }
}


function setCheckedValue(radioObj, newValue) {
  if(!radioObj)
    return;
  var radioLength = radioObj.length;
  if(radioLength == undefined) {
    radioObj.checked = (radioObj.value == newValue.toString());
    return;
  }
  for(var i = 0; i < radioLength; i++) {
    radioObj[i].checked = false;
    if(radioObj[i].value == newValue.toString()) {
      radioObj[i].checked = true;
    }
  }
}

function stripIt(str) {
  var len = str.length;
  for(var i = 1; i<len; ++i){
	   str = str.replace(/ /, "");   
	   str = str.replace(/-/, "");   
	}
 return str;
}