95 lines
2.5 KiB
PHP
95 lines
2.5 KiB
PHP
<?php
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/* vim: set expandtab sw=4 ts=4 sts=4: */
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/**
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* This class is responsible for creating Node objects
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*
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* @package PhpMyAdmin-navigation
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*/
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namespace PMA\libraries\navigation;
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use PMA\libraries\navigation\nodes\Node;
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use PMA\Psr4Autoloader;
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/**
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* Node factory - instantiates Node objects or objects derived from the Node class
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*
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* @package PhpMyAdmin-Navigation
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*/
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class NodeFactory
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{
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protected static $_namespace = 'PMA\\libraries\\navigation\\nodes\\%s';
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/**
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* Sanitizes the name of a Node class
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*
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* @param string $class The class name to be sanitized
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*
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* @return string
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*/
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private static function _sanitizeClass($class)
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{
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if (!preg_match('@^Node\w*$@', $class)) {
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$class = 'Node';
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trigger_error(
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sprintf(
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/* l10n: The word "Node" must not be translated here */
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__('Invalid class name "%1$s", using default of "Node"'),
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$class
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),
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E_USER_ERROR
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);
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}
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return self::_checkClass($class);
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}
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/**
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* Checks if a class exists and try to load it.
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* Will return the default class name back if the
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* file for some subclass is not available
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*
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* @param string $class The class name to check
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*
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* @return string
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*/
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private static function _checkClass($class)
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{
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$class = sprintf(self::$_namespace, $class);
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if (!class_exists($class)
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&& !Psr4Autoloader::getInstance()->loadClass($class)
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) {
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$class = sprintf(self::$_namespace, 'Node');
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trigger_error(
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sprintf(
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__('Could not load class "%1$s"'),
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$class
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),
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E_USER_ERROR
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);
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}
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return $class;
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}
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/**
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* Instantiates a Node object
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*
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* @param string $class The name of the class to instantiate
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* @param string $name An identifier for the new node
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* @param int $type Type of node, may be one of CONTAINER or OBJECT
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* @param bool $is_group Whether this object has been created
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* while grouping nodes
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*
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* @return mixed
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*/
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public static function getInstance(
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$class = 'Node',
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$name = 'default',
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$type = Node::OBJECT,
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$is_group = false
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) {
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$class = self::_sanitizeClass($class);
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return new $class($name, $type, $is_group);
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}
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}
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