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<?php
/**
* TComponent, TPropertyValue classes
*
* @author Qiang Xue <qiang.xue@gmail.com>
*
* Global Events, intra-object events, Class behaviors, expanded behaviors
* @author Brad Anderson <javalizard@mac.com>
*
* @link http://www.pradosoft.com/
* @copyright Copyright © 2005-2014 PradoSoft
* @license http://www.pradosoft.com/license/
* @package System
*/
/**
* TComponentReflection class.
*
* TComponentReflection provides functionalities to inspect the public/protected
* properties, events and methods defined in a class.
*
* The following code displays the properties and events defined in {@link TDataGrid},
* <code>
* $reflection=new TComponentReflection('TDataGrid');
* Prado::varDump($reflection->getProperties());
* Prado::varDump($reflection->getEvents());
* </code>
*
* @author Qiang Xue <qiang.xue@gmail.com>
* @package System
* @since 3.0
*/
class TComponentReflection extends TComponent
{
private $_className;
private $_properties=array();
private $_events=array();
private $_methods=array();
/**
* Constructor.
* @param object|string the component instance or the class name
* @throws TInvalidDataTypeException if the object is not a component
*/
public function __construct($component)
{
if(is_string($component) && class_exists($component,false))
$this->_className=$component;
else if(is_object($component))
$this->_className=get_class($component);
else
throw new TInvalidDataTypeException('componentreflection_class_invalid');
$this->reflect();
}
private function isPropertyMethod($method)
{
$methodName=$method->getName();
return $method->getNumberOfRequiredParameters()===0
&& strncasecmp($methodName,'get',3)===0
&& isset($methodName[3]);
}
private function isEventMethod($method)
{
$methodName=$method->getName();
return strncasecmp($methodName,'on',2)===0
&& isset($methodName[2]);
}
private function reflect()
{
$class=new ReflectionClass($this->_className);
$properties=array();
$events=array();
$methods=array();
$isComponent=is_subclass_of($this->_className,'TComponent') || strcasecmp($this->_className,'TComponent')===0;
foreach($class->getMethods() as $method)
{
if($method->isPublic() || $method->isProtected())
{
$methodName=$method->getName();
if(!$method->isStatic() && $isComponent)
{
if($this->isPropertyMethod($method))
$properties[substr($methodName,3)]=$method;
else if($this->isEventMethod($method))
{
$methodName[0]='O';
$events[$methodName]=$method;
}
}
if(strncmp($methodName,'__',2)!==0)
$methods[$methodName]=$method;
}
}
$reserved=array();
ksort($properties);
foreach($properties as $name=>$method)
{
$this->_properties[$name]=array(
'type'=>$this->determinePropertyType($method),
'readonly'=>!$class->hasMethod('set'.$name),
'protected'=>$method->isProtected(),
'class'=>$method->getDeclaringClass()->getName(),
'comments'=>$method->getDocComment()
);
$reserved['get'.strtolower($name)]=1;
$reserved['set'.strtolower($name)]=1;
}
ksort($events);
foreach($events as $name=>$method)
{
$this->_events[$name]=array(
'class'=>$method->getDeclaringClass()->getName(),
'protected'=>$method->isProtected(),
'comments'=>$method->getDocComment()
);
$reserved[strtolower($name)]=1;
}
ksort($methods);
foreach($methods as $name=>$method)
{
if(!isset($reserved[strtolower($name)]))
$this->_methods[$name]=array(
'class'=>$method->getDeclaringClass()->getName(),
'protected'=>$method->isProtected(),
'static'=>$method->isStatic(),
'comments'=>$method->getDocComment()
);
}
}
/**
* Determines the property type.
* This method uses the doc comment to determine the property type.
* @param ReflectionMethod
* @return string the property type, '{unknown}' if type cannot be determined from comment
*/
protected function determinePropertyType($method)
{
$comment=$method->getDocComment();
if(preg_match('/@return\\s+(.*?)\\s+/',$comment,$matches))
return $matches[1];
else
return '{unknown}';
}
/**
* @return string class name of the component
*/
public function getClassName()
{
return $this->_className;
}
/**
* @return array list of component properties. Array keys are property names.
* Each array element is of the following structure:
* [type]=>property type,
* [readonly]=>whether the property is read-only,
* [protected]=>whether the method is protected or not
* [class]=>the class where the property is inherited from,
* [comments]=>comments associated with the property.
*/
public function getProperties()
{
return $this->_properties;
}
/**
* @return array list of component events. Array keys are event names.
* Each array element is of the following structure:
* [protected]=>whether the event is protected or not
* [class]=>the class where the event is inherited from.
* [comments]=>comments associated with the event.
*/
public function getEvents()
{
return $this->_events;
}
/**
* @return array list of public/protected methods. Array keys are method names.
* Each array element is of the following structure:
* [protected]=>whether the method is protected or not
* [static]=>whether the method is static or not
* [class]=>the class where the property is inherited from,
* [comments]=>comments associated with the event.
*/
public function getMethods()
{
return $this->_methods;
}
}
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