<?php /** * TRequiredFieldValidator class file * * @author Qiang Xue <qiang.xue@gmail.com> * @link http://www.pradosoft.com/ * @copyright Copyright © 2005-2008 PradoSoft * @license http://www.pradosoft.com/license/ * @version $Id$ * @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. * * Validation will also succeed if input is of TListControl type and the number * of selected values different from the initial value is greater than zero. * * @author Qiang Xue <qiang.xue@gmail.com> * @version $Id$ * @package System.Web.UI.WebControls * @since 3.0 */ class TRequiredFieldValidator extends TBaseValidator { /** * Gets the name of the javascript class responsible for performing validation for this control. * This method overrides the parent implementation. * @return string the javascript class name */ protected function getClientClassName() { return 'Prado.WebUI.TRequiredFieldValidator'; } /** * @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. * * Validation will also succeed if input is of TListControl type and the * number of selected values different from the initial value is greater * than zero. * * @return boolean whether the validation succeeds */ protected function evaluateIsValid() { $control = $this->getValidationTarget(); if($control instanceof TListControl) return $this->validateListControl($control); else if($control instanceof TRadioButton && strlen($control->getGroupName()) > 0) return $this->validateRadioButtonGroup($control); else return $this->validateStandardControl($control); } private function validateListControl($control) { $initial = trim($this->getInitialValue()); $count = 0; foreach($control->getItems() as $item) { if($item->getSelected() && $item->getValue() != $initial) $count++; } return $count > 0; } private function validateRadioButtonGroup($control) { $initial = trim($this->getInitialValue()); foreach($control->getRadioButtonsInGroup() as $radio) { if($radio->getChecked()) { if(strlen($value = $radio->getValue()) > 0) return $value !== $initial; else return true; } } return false; } private function validateStandardControl($control) { $initial = trim($this->getInitialValue()); $value=$this->getValidationValue($control); return (is_bool($value) && $value) || trim($value)!==$initial; } /** * Returns an array of javascript validator options. * @return array javascript validator options. */ protected function getClientScriptOptions() { $options = parent::getClientScriptOptions(); $options['InitialValue']=$this->getInitialValue(); $control = $this->getValidationTarget(); if($control instanceof TListControl) $options['TotalItems'] = $control->getItemCount(); if($control instanceof TRadioButton && strlen($control->getGroupName()) > 0) $options['GroupName'] = $control->getGroupName(); return $options; } }