var oldValue = null;
function MyCheck(formName , isBindElement){
	this.errorArray = new Array();
	this.keyArray = new Array();
	this.form = document.getElementsByName(formName)[0];
	if(this.form == null){
		this.form = document.getElementById(formName);
	}
	if(this.form == null){
	   alert(formName + "is not exist");
	   return;
    }
	if(isBindElement){
	   this.addEventListener(this.form);
	}
}

MyCheck.prototype.checkOnSubmit = function(){
    var elements = this.form.elements;
    for(var i = 0 ; i < elements.length ; i++){
        var result = null;
        element = elements[i];
        if(element.getAttribute("isLocalValidate") == null && element.getAttribute("isServerValidate") == null){
				continue;
        }
        else{
            if(element.getAttribute("isLocalValidate") != null){
                var functionName = element.getAttribute("isLocalValidate");
                if(functionName == "true"){
				    try{
                	   result = this.formCheck(element);
				    }catch(e){
				       alert(e.message);
                       element.focus();
					   return;
				    }
                }
                else{
                    try{
                        result = eval(functionName);
                    }catch(e){
                        throw new Error("o¡¥¨ºy" + functionName + "¦̡¨®?¡䨪?¨®");
                    }
                }
            }
            if(element.getAttribute("isServerValidate") != null && result == null){
				var serverValidate = element.getAttribute("isServerValidate");
				if(serverValidate.indexOf("url:") != -1){
                	result = this.remoteCheck(element);
               	}
                else if(serverValidate.indexOf("func:") != -1){
                	var functionName = serverValidate.substring(serverValidate.indexOf("func:") + 5);
                	try{
                		result = eval(functionName);
                	}catch(e){
                		alert(e);
                	}
                }
							/*if(result == "" || result.length == 0){
                	result = false;
            	}*/
            }
            if(result != null && result != ""){
                var message = result;
                if(message == null || message == false){
                    message = element.getAttribute("msg");
                }
							alert(result);
	  	        element.focus();
	  	        return false;
            }
        }
    }
    return true;
}

MyCheck.prototype.addEventListener = function(form){
	var defineElements = ["input" , "textarea" , "select"];
		var elements = form.elements;
		for(var j = 0 ; j < elements.length ; j++){
			element = elements[j];
			if(!element.tagName in defineElements){
				continue;
			}
			if(element.getAttribute("isLocalValidate") == null && element.getAttribute("isServerValidate") == null){
				continue;
			}
			else{
				if(element.tagName.toLowerCase() == "input"){
					switch(element.type.toLowerCase()){
						case 'hidden':
						case 'password':
						case 'text':
							this.blurProcessor = this.blurProcess.bindAsEventListener(this);
							Event.observe(element,"blur" , this.blurProcessor);
							this.focusProcessor = this.focusProcess.bindAsEventListener(this);
							Event.observe(element,"focus" , this.focusProcessor);
						default : continue;
					}
				}
				else{
						blurProcessor = this.blurProcess.bindAsEventListener(this);
						Event.observe(element,"blur" , blurProcessor);
						focusProcessor = this.focusProcess.bindAsEventListener(this);
						Event.observe(element,"focus" , focusProcessor);
				}
			}
		}
}

MyCheck.prototype.blurProcess = function(event){
	try{
	this.blurBefore(event);
	this.blurProcessing(event);
	this.blurAfter(event);
	}catch(e){
		//alert(e.message);
	}
}

MyCheck.prototype.focusProcess = function(event){
	this.focusBefore(event);
	this.focusProcessing(event);
	this.focusAfter(event);
}

MyCheck.prototype.focusProcessing = function(event){
	element = event.target || event.srcElement;
	this.oldValue = element.value;
}

MyCheck.prototype.blurProcessing = function(event){
	var element = event.target || event.srcElement;
	var value = element.value;
    var result = null;
	if(this.oldValue == "" || this.oldValue != value){
		if(element.getAttribute("isLocalValidate") != null){
			var functionName = element.getAttribute("isLocalValidate");
			if(functionName == "true"){
				try{
                	result = this.formCheck(element);
				}catch(e){
					throw e;
				}
            }
            else{
			     try{
                    result = eval(functionName);
			     }catch(e){
			         throw new Error("o¡¥¨ºy" + functionName + "¦̡¨®?¡䨪?¨®");
                }
            }
		}
		if(element.getAttribute("isServerValidate") != null && result == null){
				var serverValidate = element.getAttribute("isServerValidate");
				if(serverValidate.indexOf("url:") != -1){
                	result = this.remoteCheck(element);
               	}
                else if(serverValidate.indexOf("func:") != -1){
                	var functionName = serverValidate.substring(serverValidate.indexOf("func:") + 5);
                	try{
                		result = eval(functionName);
                	}catch(e){
                		alert(e);
                	}
                }
				if(result == "" || result.length == 0){
                	result = null;
            	}
		}
	}
	if(result != null || result == false){
        var message = result
        if(result == false){
            message = element.getAttribute("msg");
        }
    }
    this.processResult(element , message); 
}

MyCheck.prototype.processResult = function(element , errorMessage){
    var elementName = element.name
    if(errorMessage != null){
        var result = errorMessage;
        this.errorArray[elementName] = result;
        var flag = false;
		var i = 0
		for( ; i < this.keyArray.length ; i++){
			if(this.keyArray[i] == elementName){
				break;
			}
		}
        if(i == this.keyArray.length){
		  this.keyArray[this.keyArray.length] = elementName;
		}
    }
    else{
	       if(this.errorArray[elementName] != null){
		      delete(this.errorArray[elementName]);
	          for(var i = 0 ; i < this.keyArray.length ; i++){
		          if(this.keyArray[i] == elementName){
		              this.keyArray[i] = null;
		              break;
	          }
		  }
		}
    }
}


MyCheck.prototype.formCheck = function(inputElement){
	try{
    	var errorMessage = Validator.validate(inputElement);
	}
	catch(e){
		throw e;
	}
    return errorMessage;
}

MyCheck.prototype.remoteCheck = function(element){
    var value = element.value;
    var url = element.getAttribute("isServerValidate");
    url = url.substring(url.indexOf("url:") + 4);
    var options
    if(value != null || value != ""){
        var options = "value=" + value;
    }
    else{
        var options = "value="+"";
    }
    var request = new Ajax.Request(
                      url , {
                            method : 'get',
                            parameters : options,
                            asynchronous: false
                      }
                      );
    var check = request.transport.responseText;
    if(check != null || check != "" || check.toLowerCase() !="success"){
        return check;
    }
    return null;
}


MyCheck.prototype.blurBefore = function(event){}

MyCheck.prototype.blurAfter = function(event){}

MyCheck.prototype.focusBefore = function(event){}

MyCheck.prototype.focusAfter = function(event){}




Validator = {
    require : /.+/,
	email : /^\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*$/,
	phone : /^((\(\d{3}\))|(\d{3}\-))?(\(0\d{2,3}\)|0\d{2,3}-)?[1-9]\d{6,7}$/,
	mobile : /^((\(\d{3}\))|(\d{3}\-))?13\d{9}$/,
	url : /^http:\/\/[A-Za-z0-9]+\.[A-Za-z0-9]+[\/=\?%\-&_~`@[\]\':+!]*([^<>\"\"])*$/,
	idcard : /^\d{15}(\d{2}[A-Za-z0-9])?$/,
	currency : /^\d+(\.\d+)?$/,
	number : /^\d+$/,
	zip : /^[1-9]\d{5}$/,
	qq : /^[1-9]\d{4,8}$/,
	integer : /^[-\+]?\d+$/,
	double : /^[-\+]?\d+(\.\d+)?$/,
	english : /^[A-Za-z]+$/,
	chinese :  /^[\u0391-\uFFE5]+$/,
	unSafe : /^(([A-Z]*|[a-z]*|\d*|[-_\~!@#\$%\^&\*\.\(\)\[\]\{\}<>\?\\\/\'\"]*)|.{0,5})$|\s/,
	issafe : function(str){return !this.UnSafe.test(str);},
	safestring : "this.IsSafe(value)",
	limit : "this.limit(value.length,getAttribute('min'),  getAttribute('max'))",
	limitb : "this.limit(this.LenB(value), getAttribute('min'), getAttribute('max'))",
	date : "this.IsDate(value, getAttribute('min'), getAttribute('format'))",
	repeat : "value == document.getElementsByName(getAttribute('to'))[0].value",
	range : "getAttribute('min') < value && value < getAttribute('max')",
	compare : "this.compare(value,getAttribute('operator'),getAttribute('to'))",
	custom : "this.Exec(value, getAttribute('regexp'))",
	group : "this.MustChecked(getAttribute('name'), getAttribute('min'), getAttribute('max'))",
	
    validate:function(inputElement){
        
       with(inputElement){
	       var _dataType = getAttribute("dataType");
           if(_dataType == null || typeof(_dataType) == "object"){
                var exception = "[" + name + "] dataType tag is null";
				throw new Error(exception);
           }
	       if(getAttribute("require") == "false" && value == "") return null;
	       switch(_dataType.toLowerCase()){
                case "date" :
                case "repeat" :
                case "range" :
                case "compare" :
                case "custom" :
				case "group" : 
				case "limit" :
				case "limitb" :
				case "safestring" :
                if(!eval(this[_dataType])){
			         var a = getAttribute("msg");
			         if(a == null || a == ""){
			             throw new Error("[" + name + "] msg tag is null");
                     }
                     return a;
                }
                break;
                default :
                if(!this[_dataType].test(value)){
                     var a = getAttribute("msg");
			         if(a == null || a == ""){
			             throw new Error("[" + name + "] msg tag is null");
                     }
                     return a;
				}
            }
            return null;
        }
    },
    
   	limit : function(len,min, max){
		min = min || 0;
		max = max || Number.MAX_VALUE;
		return min <= len && len <= max;
	},
	LenB : function(str){
		return str.replace(/[^\x00-\xff]/g,"**").length;
	},
	Exec : function(op, reg){
		return new RegExp(reg,"g").test(op);
	},
	compare : function(op1,operator,op2){
		switch (operator.toLowerCase()) {
			case "notequal":
				return (op1 != op2);
			case "greaterthan":
				return (op1 > op2);
			case "greaterthanequal":
				return (op1 >= op2);
			case "lessthan":
				return (op1 < op2);
			case "lessthanequal":
				return (op1 <= op2);
			default:
				return (op1 == op2);            
		}
	},
	MustChecked : function(name, min, max){
		var groups = document.getElementsByName(name);
		var hasChecked = 0;
		min = min || 1;
		max = max || groups.length;
		for(var i=groups.length-1;i>=0;i--)
			if(groups[i].checked) hasChecked++;
		return min <= hasChecked && hasChecked <= max;
	},
	IsDate : function(op, formatString){
		formatString = formatString || "ymd";
		var m, year, month, day;
		switch(formatString){
			case "ymd" :
				m = op.match(new RegExp("^((\\d{4})|(\\d{2}))([-./])(\\d{1,2})\\4(\\d{1,2})$"));
				if(m == null ) return false;
				day = m[6];
				month = m[5]--;
				year =  (m[2].length == 4) ? m[2] : GetFullYear(parseInt(m[3], 10));
				break;
			case "dmy" :
				m = op.match(new RegExp("^(\\d{1,2})([-./])(\\d{1,2})\\2((\\d{4})|(\\d{2}))$"));
				if(m == null ) return false;
				day = m[1];
				month = m[3]--;
				year = (m[5].length == 4) ? m[5] : GetFullYear(parseInt(m[6], 10));
				break;
			default :
				break;
		}
		if(!parseInt(month)) return false;
		month = month==12 ?0:month;
		var date = new Date(year, month, day);
        return (typeof(date) == "object" && year == date.getFullYear() && month == date.getMonth() && day == date.getDate());
		function GetFullYear(y){return ((y<30 ? "20" : "19") + y)|0;}
	}
}