/**
* form filter / validate
* 表单过滤验证
*/
var formfilter = {
    /**
	* 获取验证字段对象列表
	* {fieldfilter} filter
	* {jquery} el
	* {boolean} ispass
	* @param {string} fieldstring joined with ",";
	* @return {object} _fieldlist {useraccount:{filter:null,el:null,ispass:false},userpassword:{filter:null,el:null,ispass:false}};
	*/
    getfieldlist : function(fieldstring)
    {
        var _namelist = fieldstring.split(",");
        var _fieldlist = {};
        var _field = "";
        for(var i=0;i<_namelist.length;i++)
        {
            _field = _namelist[i];
            _fieldlist[_field] = {
                filter:null,
                el:null,
                ispass:false
            };
        }
        return _fieldlist
    },
    /**
	* fill field to list
	* 填充到字段列表
	*/
    fillfilter : function(fieldlist)
    {
        var _fieldlist = fieldlist;
        for(var _field in _fieldlist)
        {
            fieldlist[_field].el = fieldlist[_field].filter.getselelement();
        }
        delete _fieldlist;
        return fieldlist;
    },
    /**
	* is passed
	* 是否通过
	*/
    ispassed : function(fieldlist)
    {
        var _ispass = true;
        for(var _field in fieldlist)
        {
            _field = fieldlist[_field];
            _field.el.blur();
            _ispass &= _field.ispass;
        }
        delete fieldlist;
        return (_ispass == true)
    }
}
/**
* field filter / validate
* 表单过滤验证
*/
var fieldfilter = function(selstring)
{
    /* @var selelement jquery */
    this.selelement = null;
    this.selelementname = null;
    /**
	*
	* @param {string} selstring
	* @return {jquery} _returnel
	*/
    this.getel = function(selstring)
    {

        var _returnel ;
        var _selstringlow = selstring.tolocalelowercase();
        var _re = new regexp(":(last|first|[a-z]+)","i");
        var _posname = selstring.match(_re);
        _posname = _posname?_posname[1]:"";
        _posname = _posname && (_posname)?":"+_posname:"";
        if (_posname)
        {
            _re = new regexp(_posname,"i");
            selstring = selstring.replace(_re,"");
        }
        if (selstring.indexof("#") == 0)
        {
            _returnel = jquery(selstring);
        }else if (_selstringlow.indexof("id=") == 0 )
        {
            _returnel = jquery("#\""+selstring.substr(3));
        }else if (_selstringlow.indexof("name=") == 0 )
        {
            _returnel = jquery("[name="+selstring.substr(5)+"]"+_posname);
        }else{
            _returnel = jquery("#"+selstring);
        }
        return _returnel;
    }

    this.getselelement = function(selstring){
        if (!this.selelement && selstring)
        {
            var _restart = new regexp("^(#|name=|id=)","i");
            var _reend = new regexp(":(last|first|[a-z]+)$","i");
            this.selelementname = selstring.replace(_restart,"").replace(_reend,"");
            this.selelement = this.getel(selstring);
        }
        return this.selelement;
    };
    /* 获取元素主名称 */
    this.getselelementname = function(){
        return this.selelementname;
    }
    /* construction */
    this.getselelement(selstring);

    this._comparefieldresult = null;
    this._comparefieldreason = null;
    /**
	* multi-field value compare
	* 对比多个值
	* @param {array} fieldlist
	* @param {boolean} allowempty
	*/
    this.comparewith = function(fieldlist,allowempty)
    {
        var _cvalue;
        var _value;
        var _fieldname;
        this._comparefieldresult = true;
        for(var i=-1;i<fieldlist.length;i++)
        {
            if (i == -1)
            {
                _value = this.selelement.val(); // 当前元素值
            }else{
                _fieldname = fieldlist[i];
                _cvalue = this.getel(_fieldname).val();
                if (_value != _cvalue)
                {
                    this._comparefieldreason = _fieldname ;
                    this._comparefieldresult = false;
                }
            }
        }
        if (!allowempty)
        {
            if (_value == null)
            {
                this._comparefieldreason = "empty"; // fields are empty
                this._comparefieldresult = false;
            }
        }
    };
    /**
	* get result of compare field
	* 获取对比结果
	*/
    this.getcomparefieldresult =  function()
    {
        return  this._comparefieldresult;
    };
    /**
	* get reason of compare field
	* 获取失败原因
	*/
    this.getcomparefieldreason =  function()
    {
        return  this._comparefieldreason;
    };
    /**
	* get string length
	* 获取字符串的长度
	* @param {string} str
	* @param {string} charset
	*/
    this.mb_strlen = function (str,charset)
    {
        if (!charset)
        {
            charset = "utf-8";
        }
        var _charlength = (charset.tolocalelowercase() == 'utf-8')?3:2;
        var _len = 0;
        var _cchar =  null;

        for(var i = 0; i < str.length; i++)
        {
            _cchar = str.charcodeat(i);
            _len +=  (_cchar < 0 || _cchar > 255) ? _charlength : 1;
        }
        return _len;
    }
    /**
	* check the value length
	* 检查值得长度
	* @param {integer} minlimit
	* @param {integer} maxlimit
	* @param {string} pregstring user account or other
	* @return{boolean}
	*/
    this.checklength = function(minlimit,maxlimit,pregstring)
    {
        var _cvalue;
        var _value;
        var _fieldname;
        var _fieldlength;
        var _ispass = true;
        var _reg;
        var _el;
        var _selel = this.getselelement();
        var _selellen = _selel.length;
        var _selobj = this;
        if (!maxlimit && minlimit)
        {
            maxlimit = minlimit;
        }
        if (!_selellen)
        {
            _ispass &= false;
        }
        if (pregstring)
        {
            _reg = new regexp(pregstring,"");
        }
        _selel.each(function(){
            _el = jquery(this);
            _cvalue = _el.val();
            if (minlimit)
            {
                _fieldlength = _selobj.mb_strlen(_cvalue);
                if (_fieldlength >= minlimit && _fieldlength <= maxlimit)
                {
                    _ispass &= true;
                }else{
                    _ispass &= false;
                }
            }else if(!minlimit){
                _ispass &= true;
            }
            if (pregstring && _ispass)
            {
                _ispass &= _reg.test(_cvalue);
            }
        });
        return _ispass;
    };
    /**
	* check field was checked or not
	* 是否被选定
	* input:[checkbox,radio]
	* @return {boolean}
	*/
    this.ischecked = function(allowempty,pregstring)
    {
        var _ichecked = true;
        var _el;
        var _elischecked;
        var _re;
        var _selel = this.getselelement();
        var _checkedlen = 0;
        if (pregstring)
        {
            _re = new regexp(pregstring,"i");
        }
        _selel.each(function(){
            _el =  jquery(this);
            _elischecked = _el.attr("checked");
            _checkedlen += _elischecked?1:0;
            if (pregstring && _elischecked)
            {
                _ichecked &= _re.test(_el.val());
            }
        });
        _ichecked &= (_checkedlen > 0);
        if (allowempty && (_checkedlen == 0))
        {
            _ichecked = true;
        }
        return _ichecked?true:false;
    };
    /**
	* check field was selected whether not
	* 是否被选定
	* select
	* @param {string} pregstring
	*/
    this.isselected = function(pregstring)
    {
        var _isselected;
        _isselected = this.getselelement().val();
        if (pregstring && _isselected)
        {
            var _re = new regexp(pregstring,"i");
            return _re.test(_isselected);
        }
        return _isselected?true:false;
    }
    /**
	* get noti box
	* 获取提示框
	* @param {string} selstring
	*/
    this.getnotiel = function(selstring){
        var _elname = this.getselelementname();
        var _returnel;
        _elname = _elname.replace(new regexp("\\[\\]$"),"");
        _returnel = jquery("#_"+_elname+"_noti");
        if (selstring)
        {
            _returnel = jquery(selstring,_returnel);
        }
        return _returnel;
    };
}