www.gusucode.com > Piwik 网站流量统计系统 v2.9.1PHP源码程序 > Piwik 网站流量统计系统 v2.9.1/piwik/piwik/libs/HTML/QuickForm2/Rule.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;
}
}
?>