silverstripe-framework/core/Extension.php
Ingo Schommer 9eb57d064e ENHANCEMENT Added Extension::get_classname_without_arguments()
git-svn-id: svn://svn.silverstripe.com/silverstripe/open/modules/sapphire/trunk@73884 467b73ca-7a2a-4603-9d3b-597d59a354a9
2009-03-31 19:32:51 +00:00

58 lines
1.5 KiB
PHP

<?php
/**
* Add extension that can be added to an object with {@link Object::add_extension()}.
* For {@link DataObject} extensions, use {@link DataObjectDecorator}.
* Each extension instance has an "owner" instance, accessible through
* {@link getOwner()}.
* Every object instance gets its own set of extension instances,
* meaning you can set parameters specific to the "owner instance"
* in new Extension instances.
*
* @package sapphire
* @subpackage core
*/
abstract class Extension extends Object {
/**
* This is used by extensions designed to be applied to controllers.
* It works the same way as {@link Controller::$allowed_actions}.
*/
public static $allowed_actions = null;
/**
* The DataObject that owns this decorator.
* @var DataObject
*/
protected $owner;
/**
* Set the owner of this decorator.
* @param DataObject $owner
*/
function setOwner(Object $owner) {
$this->owner = $owner;
}
/**
* Returns the owner of this decorator
*
* @return Object
*/
public function getOwner() {
return $this->owner;
}
/**
* Helper method to strip eval'ed arguments from a string
* thats passed to {@link DataObject::$extensions} or
* {@link Object::add_extension()}.
*
* @param string $extensionStr E.g. "Versioned('Stage','Live')"
* @return string Extension classname, e.g. "Versioned"
*/
public static function get_classname_without_arguments($extensionStr) {
return (($p = strpos($extensionStr, '(')) !== false) ? substr($extensionStr, 0, $p) : $extensionStr;
}
}
?>