mirror of
https://github.com/silverstripe/silverstripe-framework
synced 2024-10-22 14:05:37 +02:00
9eb57d064e
git-svn-id: svn://svn.silverstripe.com/silverstripe/open/modules/sapphire/trunk@73884 467b73ca-7a2a-4603-9d3b-597d59a354a9
58 lines
1.5 KiB
PHP
58 lines
1.5 KiB
PHP
<?php
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/**
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* Add extension that can be added to an object with {@link Object::add_extension()}.
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* For {@link DataObject} extensions, use {@link DataObjectDecorator}.
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* Each extension instance has an "owner" instance, accessible through
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* {@link getOwner()}.
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* Every object instance gets its own set of extension instances,
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* meaning you can set parameters specific to the "owner instance"
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* in new Extension instances.
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*
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* @package sapphire
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* @subpackage core
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*/
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abstract class Extension extends Object {
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/**
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* This is used by extensions designed to be applied to controllers.
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* It works the same way as {@link Controller::$allowed_actions}.
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*/
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public static $allowed_actions = null;
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/**
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* The DataObject that owns this decorator.
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* @var DataObject
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*/
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protected $owner;
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/**
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* Set the owner of this decorator.
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* @param DataObject $owner
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*/
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function setOwner(Object $owner) {
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$this->owner = $owner;
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}
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/**
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* Returns the owner of this decorator
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*
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* @return Object
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*/
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public function getOwner() {
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return $this->owner;
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}
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/**
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* Helper method to strip eval'ed arguments from a string
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* thats passed to {@link DataObject::$extensions} or
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* {@link Object::add_extension()}.
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*
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* @param string $extensionStr E.g. "Versioned('Stage','Live')"
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* @return string Extension classname, e.g. "Versioned"
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*/
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public static function get_classname_without_arguments($extensionStr) {
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return (($p = strpos($extensionStr, '(')) !== false) ? substr($extensionStr, 0, $p) : $extensionStr;
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}
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}
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?>
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