334 lines
11 KiB
PHP
334 lines
11 KiB
PHP
<?php
|
|
/**
|
|
* Base class for HTML_QuickForm2 rules
|
|
*
|
|
* PHP version 5
|
|
*
|
|
* LICENSE:
|
|
*
|
|
* Copyright (c) 2006-2010, Alexey Borzov <avb@php.net>,
|
|
* Bertrand Mansion <golgote@mamasam.com>
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* * Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* * Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* * The names of the authors may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
|
|
* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
|
|
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
|
|
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
|
|
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
|
|
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
|
|
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
|
|
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
|
|
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
|
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
* @category HTML
|
|
* @package HTML_QuickForm2
|
|
* @author Alexey Borzov <avb@php.net>
|
|
* @author Bertrand Mansion <golgote@mamasam.com>
|
|
* @license http://opensource.org/licenses/bsd-license.php New BSD License
|
|
* @version SVN: $Id: Rule.php 299706 2010-05-24 18:32:37Z avb $
|
|
* @link http://pear.php.net/package/HTML_QuickForm2
|
|
*/
|
|
|
|
/**
|
|
* Abstract base class for HTML_QuickForm2 rules
|
|
*
|
|
* This class provides methods that allow chaining several rules together.
|
|
* Its validate() method executes the whole rule chain starting from this rule.
|
|
*
|
|
* @category HTML
|
|
* @package HTML_QuickForm2
|
|
* @author Alexey Borzov <avb@php.net>
|
|
* @author Bertrand Mansion <golgote@mamasam.com>
|
|
* @version Release: @package_version@
|
|
*/
|
|
abstract class HTML_QuickForm2_Rule
|
|
{
|
|
/**
|
|
* Constant showing that validation should be run server-side
|
|
* @see HTML_QuickForm2_Node::addRule()
|
|
*/
|
|
const RUNAT_SERVER = 1;
|
|
|
|
/**
|
|
* Constant showing that validation should be run client-side
|
|
* @see HTML_QuickForm2_Node::addRule()
|
|
*/
|
|
const RUNAT_CLIENT = 2;
|
|
|
|
/**
|
|
* An element whose value will be validated by this rule
|
|
* @var HTML_QuickForm2_Node
|
|
*/
|
|
protected $owner;
|
|
|
|
/**
|
|
* An error message to display if validation fails
|
|
* @var string
|
|
*/
|
|
protected $message;
|
|
|
|
/**
|
|
* Configuration data for the rule
|
|
* @var mixed
|
|
*/
|
|
protected $config;
|
|
|
|
/**
|
|
* Rules chained to this via "and" and "or" operators
|
|
*
|
|
* The contents can be described as "disjunctive normal form", where an outer
|
|
* array represents a disjunction of conjunctive clauses represented by inner
|
|
* arrays.
|
|
*
|
|
* @var array
|
|
*/
|
|
protected $chainedRules = array(array());
|
|
|
|
|
|
/**
|
|
* Class constructor
|
|
*
|
|
* @param HTML_QuickForm2_Node Element to validate
|
|
* @param string Error message to display if validation fails
|
|
* @param mixed Configuration data for the rule
|
|
*/
|
|
public function __construct(HTML_QuickForm2_Node $owner, $message = '', $config = null)
|
|
{
|
|
$this->setOwner($owner);
|
|
$this->setMessage($message);
|
|
$this->setConfig($config);
|
|
}
|
|
|
|
/**
|
|
* Merges local configuration with that provided for registerRule()
|
|
*
|
|
* Default behaviour is for global config to override local one, different
|
|
* Rules may implement more complex merging behaviours.
|
|
*
|
|
* @param mixed Local configuration
|
|
* @param mixed Global configuration, usually provided to {@link HTML_QuickForm2_Factory::registerRule()}
|
|
* @return mixed Merged configuration
|
|
*/
|
|
public static function mergeConfig($localConfig, $globalConfig)
|
|
{
|
|
return is_null($globalConfig)? $localConfig: $globalConfig;
|
|
}
|
|
|
|
/**
|
|
* Sets configuration data for the rule
|
|
*
|
|
* @param mixed Rule configuration data (specific for a Rule)
|
|
* @return HTML_QuickForm2_Rule
|
|
* @throws HTML_QuickForm2_InvalidArgumentException in case of invalid
|
|
* configuration data
|
|
*/
|
|
public function setConfig($config)
|
|
{
|
|
$this->config = $config;
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* Returns the rule's configuration data
|
|
*
|
|
* @return mixed Configuration data (specific for a Rule)
|
|
*/
|
|
public function getConfig()
|
|
{
|
|
return $this->config;
|
|
}
|
|
|
|
/**
|
|
* Sets the error message output by the rule
|
|
*
|
|
* @param string Error message to display if validation fails
|
|
* @return HTML_QuickForm2_Rule
|
|
*/
|
|
public function setMessage($message)
|
|
{
|
|
$this->message = (string)$message;
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* Returns the error message output by the rule
|
|
*
|
|
* @return string Error message
|
|
*/
|
|
public function getMessage()
|
|
{
|
|
return $this->message;
|
|
}
|
|
|
|
/**
|
|
* Sets the element that will be validated by this rule
|
|
*
|
|
* @param HTML_QuickForm2_Node Element to validate
|
|
*/
|
|
public function setOwner(HTML_QuickForm2_Node $owner)
|
|
{
|
|
if (null !== $this->owner) {
|
|
$this->owner->removeRule($this);
|
|
}
|
|
$this->owner = $owner;
|
|
}
|
|
|
|
/**
|
|
* Adds a rule to the chain with an "and" operator
|
|
*
|
|
* Evaluation is short-circuited, next rule will not be evaluated if the
|
|
* previous one returns false. The method is named this way because "and" is
|
|
* a reserved word in PHP.
|
|
*
|
|
* @param HTML_QuickForm2_Rule
|
|
* @return HTML_QuickForm2_Rule first rule in the chain (i.e. $this)
|
|
* @throws HTML_QuickForm2_InvalidArgumentException when trying to add
|
|
* a "required" rule to the chain
|
|
*/
|
|
public function and_(HTML_QuickForm2_Rule $next)
|
|
{
|
|
if ($next instanceof HTML_QuickForm2_Rule_Required) {
|
|
throw new HTML_QuickForm2_InvalidArgumentException(
|
|
'and_(): Cannot add a "required" rule'
|
|
);
|
|
}
|
|
$this->chainedRules[count($this->chainedRules) - 1][] = $next;
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* Adds a rule to the chain with an "or" operator
|
|
*
|
|
* Evaluation is short-circuited, next rule will not be evaluated if the
|
|
* previous one returns true. The method is named this way because "or" is
|
|
* a reserved word in PHP.
|
|
*
|
|
* @param HTML_QuickForm2_Rule
|
|
* @return HTML_QuickForm2_Rule first rule in the chain (i.e. $this)
|
|
* @throws HTML_QuickForm2_InvalidArgumentException when trying to add
|
|
* a "required" rule to the chain
|
|
*/
|
|
public function or_(HTML_QuickForm2_Rule $next)
|
|
{
|
|
if ($next instanceof HTML_QuickForm2_Rule_Required) {
|
|
throw new HTML_QuickForm2_InvalidArgumentException(
|
|
'or_(): Cannot add a "required" rule'
|
|
);
|
|
}
|
|
$this->chainedRules[] = array($next);
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* Performs validation
|
|
*
|
|
* The whole rule chain is executed. Note that the side effect of this
|
|
* method is setting the error message on element if validation fails
|
|
*
|
|
* @return boolean Whether the element is valid
|
|
*/
|
|
public function validate()
|
|
{
|
|
$globalValid = false;
|
|
$localValid = $this->validateOwner();
|
|
foreach ($this->chainedRules as $item) {
|
|
foreach ($item as $multiplier) {
|
|
if (!($localValid = $localValid && $multiplier->validate())) {
|
|
break;
|
|
}
|
|
}
|
|
if ($globalValid = $globalValid || $localValid) {
|
|
break;
|
|
}
|
|
$localValid = true;
|
|
}
|
|
$globalValid or $this->setOwnerError();
|
|
return $globalValid;
|
|
}
|
|
|
|
/**
|
|
* Validates the owner element
|
|
*
|
|
* @return bool Whether owner element is valid according to the rule
|
|
*/
|
|
abstract protected function validateOwner();
|
|
|
|
/**
|
|
* Sets the error message on the owner element
|
|
*/
|
|
protected function setOwnerError()
|
|
{
|
|
if (strlen($this->getMessage()) && !$this->owner->getError()) {
|
|
$this->owner->setError($this->getMessage());
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Returns the client-side validation callback
|
|
*
|
|
* This essentially builds a Javascript version of validateOwner() method,
|
|
* with element ID and Rule configuration hardcoded.
|
|
*
|
|
* @return string Javascript function to validate the element's value
|
|
* @throws HTML_QuickForm2_Exception if Rule can only be run server-side
|
|
*/
|
|
protected function getJavascriptCallback()
|
|
{
|
|
throw new HTML_QuickForm2_Exception(
|
|
get_class($this) . ' does not implement javascript validation'
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Returns the client-side representation of the Rule
|
|
*
|
|
* The Javascript object returned contains the following fields:
|
|
* - callback: {@see getJavascriptCallback()}
|
|
* - elementId: element ID to set error for if validation fails
|
|
* - errorMessage: error message to set if validation fails
|
|
* - chained: chained rules, array of arrays like in $chainedRules property
|
|
*
|
|
* @return string
|
|
* @throws HTML_QuickForm2_Exception if Rule or its chained Rules can only
|
|
* be run server-side
|
|
*/
|
|
public function getJavascript()
|
|
{
|
|
$js = "{\n\tcallback: " . $this->getJavascriptCallback() . ",\n" .
|
|
"\telementId: '" . $this->owner->getId() . "',\n" .
|
|
"\terrorMessage: '" . strtr($this->getMessage(), array(
|
|
"\r" => '\r',
|
|
"\n" => '\n',
|
|
"\t" => '\t',
|
|
"'" => "\\'",
|
|
'"' => '\"',
|
|
'\\' => '\\\\'
|
|
)) . "',\n\tchained: [";
|
|
$chained = array();
|
|
foreach ($this->chainedRules as $item) {
|
|
$multipliers = array();
|
|
foreach ($item as $multiplier) {
|
|
$multipliers[] = $multiplier->getJavascript();
|
|
}
|
|
$chained[] = '[' . implode(",\n", $multipliers) . ']';
|
|
}
|
|
$js .= implode(",\n", $chained) . "]\n}";
|
|
return $js;
|
|
}
|
|
}
|
|
?>
|