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<?php
/**
* TRequiredFieldValidator class file
*
* @author Qiang Xue <qiang.xue@gmail.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');
/**
* TRequiredFieldValidator class
*
* TRequiredFieldValidator makes the associated input control a required field.
* The input control fails validation if its value does not change from
* the {@link setInitialValue InitialValue} property upon losing focus.
*
* @author Qiang Xue <qiang.xue@gmail.com>
* @version $Revision: $ $Date: $
* @package System.Web.UI.WebControls
* @since 3.0
*/
class TRequiredFieldValidator extends TBaseValidator
{
/**
* @return string the initial value of the associated input control. Defaults to empty string.
* If the associated input control does not change from this initial value
* upon postback, the validation fails.
*/
public function getInitialValue()
{
return $this->getViewState('InitialValue','');
}
/**
* @param string the initial value of the associated input control.
* If the associated input control does not change from this initial value
* upon postback, the validation fails.
*/
public function setInitialValue($value)
{
$this->setViewState('InitialValue',TPropertyValue::ensureString($value),'');
}
/**
* This method overrides the parent's implementation.
* The validation succeeds if the input component changes its data
* from the {@link getInitialValue InitialValue} or the input control is not given.
* @return boolean whether the validation succeeds
*/
protected function evaluateIsValid()
{
$value=$this->getValidationValue($this->getValidationTarget());
return trim($value)!==trim($this->getInitialValue()) || (is_bool($value) && $value);
}
/**
* Returns an array of javascript validator options.
* @return array javascript validator options.
*/
protected function getClientScriptOptions()
{
$options = parent::getClientScriptOptions();
$options['InitialValue']=$this->getInitialValue();
return $options;
}
}
?>
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