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<?php
/**
* TDataTypeValidator class.
*
* @author Wei Zhuo <weizhuo[at]gmail[dot]com>
* @link http://www.pradosoft.com/
* @copyright Copyright © 2005 PradoSoft
* @license http://www.pradosoft.com/license/
* @version $Revision: $ $Date: $
* @package System.Web.UI.WebControls
*/
/**
* Using TBaseValidator class
*/
Prado::using('System.Web.UI.WebControls.TBaseValidator');
/**
* TDataTypeValidator class
*
* TDataTypeValidator verifies if the input data is of the type specified
* by {@link setDataType DataType}.
* The following data types are supported:
* - <b>Integer</b> A 32-bit signed integer data type.
* - <b>Float</b> A double-precision floating point number data type.
* - <b>Currency</b> A decimal data type that can contain currency symbols.
* - <b>Date</b> A date data type.
* - <b>String</b> A string data type.
* For <b>Date</b> type, the property {@link setDateFormat DateFormat}
* will be used to determine how to parse the date string. If it is not
* provided, the string will be assumed to be in GNU datetime format.
*
* @author Wei Zhuo <weizhuo[at]gmail[dot]com>
* @version $Revision: $ $Date: $
* @package System.Web.UI.WebControls
* @since 3.0
*/
class TDataTypeValidator extends TBaseValidator
{
/**
* @return string the data type that the values being compared are converted to before the comparison is made. Defaults to String.
*/
public function getDataType()
{
return $this->getViewState('DataType','String');
}
/**
* Sets the data type (Integer, Float, Currency, Date, String) that the values being compared are converted to before the comparison is made.
* @param string the data type
*/
public function setDataType($value)
{
$this->setViewState('DataType',TPropertyValue::ensureEnum($value,'Integer','Float','Date','Currency','String'),'String');
}
/**
* Sets the date format for a date validation
* @param string the date format value
*/
public function setDateFormat($value)
{
$this->setViewState('DateFormat', $value, '');
}
/**
* @return string the date validation date format if any
*/
public function getDateFormat()
{
return $this->getViewState('DateFormat', '');
}
/**
* Determine if the given value is of a particular type using RegExp.
* @param string value to check
* @return boolean true if value fits the type expression.
*/
protected function evaluateDataTypeCheck($value)
{
switch($this->getDataType())
{
case 'Integer':
return preg_match('/^[-+]?[0-9]+$/',trim($value));
case 'Float':
return preg_match('/^[-+]?([0-9]*\.)?[0-9]+([eE][-+]?[0-9]+)?$/',trim($value));
case 'Currency':
return preg_match('/[-+]?([0-9]*\.)?[0-9]+([eE][-+]?[0-9]+)?$/',trim($value));
case 'Date':
$dateFormat = $this->getDateFormat();
if(strlen($dateFormat))
{
$formatter = Prado::createComponent('System.Util.TSimpleDateFormatter',$dateFormat);
return $formatter->isValidDate($value);
}
else
return strtotime($value) > 0;
}
return true;
}
/**
* This method overrides the parent's implementation.
* The validation succeeds if the input data is of valid type.
* The validation always succeeds if ControlToValidate is not specified
* or the input data is empty.
* @return boolean whether the validation succeeds
*/
public function evaluateIsValid()
{
if(($value=$this->getValidationValue($this->getValidationTarget()))==='')
return true;
return $this->evaluateDataTypeCheck($value);
}
}
?>
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