From 5c2ac61fe0f0c892cd9934651d86a28b037a4386 Mon Sep 17 00:00:00 2001 From: xue <> Date: Sun, 11 Dec 2005 23:07:42 +0000 Subject: Added TBaseValidator. It's not ready yet. Needs to fill in js-related stuff. --- framework/Web/UI/WebControls/TBaseValidator.php | 302 ++++++++++++++++++++++++ 1 file changed, 302 insertions(+) create mode 100644 framework/Web/UI/WebControls/TBaseValidator.php (limited to 'framework/Web/UI/WebControls/TBaseValidator.php') diff --git a/framework/Web/UI/WebControls/TBaseValidator.php b/framework/Web/UI/WebControls/TBaseValidator.php new file mode 100644 index 00000000..f4627986 --- /dev/null +++ b/framework/Web/UI/WebControls/TBaseValidator.php @@ -0,0 +1,302 @@ + + * @link http://www.pradosoft.com/ + * @copyright Copyright © 2005 PradoSoft + * @license http://www.pradosoft.com/license/ + * @version $Revision: $ $Date: $ + * @package System.Web.UI.WebControls + */ + +/** + * TBaseValidator class + * + * TBaseValidator serves as the base class for validator controls. + * + * Validation is performed when a button control, such a TButton, a TLinkButton + * or a TImageButton is clicked and the CausesValidation of these controls is true. + * You can also manually perform validation by using the validate() method of the TPage class. + * + * Validator controls always validate the associated input control on the server. + * TValidation controls also have complete client-side implementation that allow + * DHTML supported browsers to perform validation on the client via Javascript. + * Client-side validation will validate user input before it is sent to the server. + * The form data will not be submitted if any error is detected. This avoids + * the round-trip of information necessary for server-side validation. + * + * You can use multiple validator controls to validate an individual input control, + * each responsible for validating different criteria. For example, on a user registration + * form, you may want to make sure the user enters a value in the username text box, + * and the input must consist of only word characters. You can use a TRequiredFieldValidator + * to ensure the input of username and a TRegularExpressionValidator to ensure the proper + * input. + * + * If an input control fails validation, the text specified by the ErrorMessage + * property is displayed in the validation control. If the Text property is set + * it will be displayed instead, however. If both ErrorMessage and Text + * are empty, the body content of the validator will be displayed. + * + * You can also place a TValidationSummary control on the page to display error messages + * from the validators together. In this case, only the ErrorMessage property of the + * validators will be displayed in the TValidationSummary control. + * + * Note, the IsValid property of the current TPage instance will be automatically + * updated by the validation process which occurs after OnLoad of TPage and + * before the postback events. Therefore, if you use the IsValid + * property in the OnLoad event of TPage, you must first explicitly call + * the validate() method of TPage. As an alternative, you can place your code + * in the postback event handler, such as OnClick or OnCommand, + * instead of OnLoad event. + * + * Note, to use validators derived from this control, you have to + * copy the file "/js/prado_validator.js" to the "js" directory + * which should be under the directory containing the entry script file. + * + * Notes to Inheritors When you inherit from the TBaseValidator class, + * you must override the method {@link evaluateIsValid}. + * + * Namespace: System.Web.UI.WebControls + * + * Properties + * - EnableClientScript, boolean, default=true, kept in viewstate + *
Gets or sets a value indicating whether client-side validation is enabled. + * - Display, string, default=Static, kept in viewstate + *
Gets or sets the display behavior (None, Static, Dynamic) of the error message in a validation control. + * - ControlToValidate, string, kept in viewstate + *
Gets or sets the input control to validate. This property must be set to + * the ID path of an input control. The ID path is the dot-connected IDs of + * the controls reaching from the validator's parent control to the target control. + * For example, if HomePage is the parent of Validator and SideBar controls, and + * SideBar is the parent of UserName control, then the ID path for UserName + * would be "SideBar.UserName" if UserName is to be validated by Validator. + * - Text, string, kept in viewstate + *
Gets or sets the text of TBaseValidator control. + * - ErrorMessage, string, kept in viewstate + *
Gets or sets the text for the error message. + * - EncodeText, boolean, default=true, kept in viewstate + *
Gets or sets the value indicating whether Text and ErrorMessage should be HTML-encoded when rendering. + * - IsValid, boolean, default=true + *
Gets or sets a value that indicates whether the associated input control passes validation. + * + * @author Qiang Xue + * @version $Revision: $ $Date: $ + * @package System.Web.UI.WebControls + * @since 3.0 + */ +abstract class TBaseValidator extends TLabel implements IValidator +{ + /** + * whether the validation succeeds + * @var boolean + */ + private $_isValid=true; + + public function __construct() + { + parent::__construct(); + $this->setForeColor('red'); + } + + /** + * Adds attributes to renderer. + * @param THtmlWriter the renderer + */ + protected function addAttributesToRender($writer) + { + } + + /** + * This method overrides the parent implementation to forbid setting AssociatedControlID. + * @param string the associated control ID + * @throws TNotSupportedException whenever this method is called + */ + public function setAssociatedControlID($value) + { + throw new TNotSupportedException('basevalidator_associatedcontrolid_unsupported',get_class($this)); + } + + /** + * This method overrides parent's implementation by setting {@link setIsValid IsValid} to true if disabled. + * @param boolean whether the validator is enabled. + */ + public function setEnabled($value) + { + $value=TPropertyValue::ensureBoolean($value); + parent::setEnabled($value); + if(!$value) + $this->_isValid=true; + } + + /** + * @return string the display behavior (None, Static, Dynamic) of the error message in a validation control. Defaults to Static. + */ + public function getDisplay() + { + return $this->getViewState('Display','Static'); + } + + /** + * Sets the display behavior (None, Static, Dynamic) of the error message in a validation control. + * @param string the display behavior (None, Static, Dynamic) + */ + public function setDisplay($value) + { + $this->setViewState('Display',TPropertyValue::ensureEnum($value,array('None','Static','Dynamic')),'Static'); + } + + /** + * @return boolean whether client-side validation is enabled. + */ + public function getEnableClientScript() + { + return $this->getViewState('EnableClientScript',true); + } + + /** + * Sets the value indicating whether client-side validation is enabled. + * @param boolean whether client-side validation is enabled. + */ + public function setEnableClientScript($value) + { + $this->setViewState('EnableClientScript',TPropertyValue::ensureBoolean($value),true); + } + + /** + * @return string the text for the error message. + */ + public function getErrorMessage() + { + return $this->getViewState('ErrorMessage',''); + } + + /** + * Sets the text for the error message. + * @param string the error message + */ + public function setErrorMessage($value) + { + $this->setViewState('ErrorMessage',$value,''); + } + + /** + * @return string the ID path of the input control to validate + */ + public function getControlToValidate() + { + return $this->getViewState('ControlToValidate',''); + } + + /** + * Sets the ID path of the input control to validate + * @param string the ID path + */ + public function setControlToValidate($value) + { + $this->setViewState('ControlToValidate',$value,''); + } + + /** + * @return boolean whether to set focus at the validating place if the validation fails. Defaults to true. + */ + public function getFocusOnError() + { + return $this->getViewState('FocusOnError',true); + } + + /** + * @param boolean whether to set focus at the validating place if the validation fails + */ + public function setFocusOnError($value) + { + $this->setViewState('FocusOnError',TPropertyValue::ensureBoolean($value),true); + } + + /** + * Gets the ID of the HTML element that will receive focus if validation fails and {@link getFocusOnError FocusOnError} is true. + * Defaults to the client ID of the {@link getControlToValidate ControlToValidate}. + * @return string the ID of the HTML element to receive focus + */ + public function getFocusElementID() + { + // TODO: identify the ControlToValidate + return $this->getViewState('FocusElementID', ''); + } + + /** + * Sets the ID of the HTML element that will receive focus if validation fails and {@link getFocusOnError FocusOnError} is true. + * @param string the ID of the HTML element to receive focus + */ + public function setFocusElementID($value) + { + $this->setViewState('FocusElementID', $value, ''); + } + + /** + * @return string the group which this validator belongs to + */ + public function getValidationGroup() + { + return $this->getViewState('ValidationGroup',''); + } + + /** + * @param string the group which this validator belongs to + */ + public function setValidationGroup($value) + { + $this->setViewState('ValidationGroup',$value,''); + } + + /** + * @return boolean whether the validation succeeds + */ + public function getIsValid() + { + return $this->_isValid; + } + + /** + * Sets the value indicating whether the validation succeeds + * @param boolean whether the validation succeeds + */ + public function setIsValid($value) + { + $this->_isValid=TPropertyValue::ensureBoolean($value); + } + + /** + * Validates the specified control. + * Do not override this method. Override {@link evaluateIsValid} instead. + * @return boolean whether the validation succeeds + */ + public function validate() + { + $this->setIsValid(true); + if($this->getVisible(true) && $this->getEnabled()) + { + $valid=$this->evaluateIsValid(); + $this->setValid($valid); + } + if($this->isVisible() && $this->isEnabled() && strlen($this->getControlToValidate())) + { + $valid=$this->evaluateIsValid(); + $this->setValid($valid); + return $valid; + } + else + { + $this->setValid(true); + return true; + } + } + + /** + * This is the major method for validation. + * Derived classes should implement this method to provide customized validation. + * @return boolean whether the validation succeeds + */ + abstract protected function evaluateIsValid(); +} +?> \ No newline at end of file -- cgit v1.2.3