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<?php
/**
* TCustomValidator 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');
/**
* TCustomValidator class
*
* TCustomValidator performs user-defined validation (either
* server-side or client-side or both) on an input component.
*
* To create a server-side validation function, provide a handler for
* the <b>OnServerValidate</b> event that performs the validation.
* The data string of the input component to validate can be accessed
* by the <b>value</b> property of the event parameter which is of type
* <b>TServerValidateEventParameter</b>. The result of the validation
* should be stored in the <b>isValid</b> property of the event parameter.
*
* To create a client-side validation function, add the client-side
* validation javascript function to the page template.
* The function should have the following signature:
* <code>
* <script type="text/javascript"><!--
* function ValidationFunctionName(sender, parameter)
* {
* // if(parameter == ...)
* // return true;
* // else
* // return false;
* }
* --></script>
* </code>
* Use the <b>ClientValidationFunction</b> property to specify the name of
* the client-side validation script function associated with the TCustomValidator.
*
* @author Qiang Xue <qiang.xue@gmail.com>
* @version $Revision: $ $Date: $
* @package System.Web.UI.WebControls
* @since 3.0
*/
class TCustomValidator extends TBaseValidator
{
/**
* @return string the name of the custom client-side script function used for validation.
*/
public function getClientValidationFunction()
{
return $this->getViewState('ClientValidationFunction','');
}
/**
* Sets the name of the custom client-side script function used for validation.
* @param string the script function name
*/
public function setClientValidationFunction($value)
{
$this->setViewState('ClientValidationFunction',$value,'');
}
/**
* This method overrides the parent's implementation.
* The validation succeeds if {@link onServerValidate} returns true.
* @return boolean whether the validation succeeds
*/
public function evaluateIsValid()
{
if(($id=$this->getControlToValidate())!=='')
{
if(($control=$this->findControl($id))!==null)
$value=$this->getValidationValue($control);
else
throw new TInvalidDataValueException('customvalidator_controltovalidate_invalid');
return $this->onServerValidate($value);
}
else
throw new TInvalidDataValueException('customvalidator_controltovalidate_required');
}
/**
* This method is invoked when the server side validation happens.
* It will raise the <b>OnServerValidate</b> event.
* The method also allows derived classes to handle the event without attaching a delegate.
* <b>Note</b> The derived classes should call parent implementation
* to ensure the <b>OnServerValidate</b> event is raised.
* @param string the value to be validated
* @return boolean whether the value is valid
*/
public function onServerValidate($value)
{
$param=new TServerValidateEventParameter($value,true);
$this->raiseEvent('ServerValidate',$this,$param);
return $param->getIsValid();
}
/**
* Returns an array of javascript validator options.
* @return array javascript validator options.
*/
protected function getClientScriptOptions()
{
$options=parent::getClientScriptOptions();
if(($clientJs=$this->getClientValidationFunction())!=='')
$options['clientvalidationfunction']=$clientJs;
return $options;
}
}
/**
* TServerValidateEventParameter class
*
* TServerValidateEventParameter encapsulates the parameter data for
* <b>ServerValidate</b> event of TCustomValidator components.
*
* @author Qiang Xue <qiang.xue@gmail.com>
* @version $Revision: $ $Date: $
* @package System.Web.UI.WebControls
* @since 3.0
*/
class TServerValidateEventParameter extends TEventParameter
{
/**
* the value to be validated
* @var string
*/
private $_value='';
/**
* whether the value is valid
* @var boolean
*/
private $_isValid=true;
public function __construct($value,$isValid)
{
$this->_value=$value;
$this->setIsValid($isValid);
}
public function getValue()
{
return $this->_value;
}
public function getIsValid()
{
return $this->_isValid;
}
public function setIsValid($value)
{
$this->_isValid=TPropertyValue::ensureBoolean($value);
}
}
?>
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