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<?php
/* vim: set expandtab sw=4 ts=4 sts=4: */
/**
* Holds the PMA\DI\Container class
*
* @package PMA
*/
namespace PMA\DI;
require_once 'libraries/di/Item.int.php';
require_once 'libraries/di/AliasItem.class.php';
require_once 'libraries/di/ValueItem.class.php';
require_once 'libraries/di/ServiceItem.class.php';
require_once 'libraries/di/FactoryItem.class.php';
/**
* Class Container
*
* @package PMA\DI
*/
class Container
{
/**
* @var Item[] $content
*/
protected $content = array();
/**
* @var Container
*/
protected static $defaultContainer;
/**
* Create a dependency injection container
*
* @param Container $base Container
*/
public function __construct(Container $base = null)
{
if (isset($base)) {
$this->content = $base->content;
} else {
$this->alias('container', 'Container');
}
$this->set('Container', $this);
}
/**
* Get an object with given name and parameters
*
* @param string $name Name
* @param array $params Paramters
*
* @return mixed
*/
public function get($name, $params = array())
{
if (isset($this->content[$name])) {
return $this->content[$name]->get($params);
}
if (isset($GLOBALS[$name])) {
return $GLOBALS[$name];
}
return null;
}
/**
* Remove an object from container
*
* @param string $name Name
*
* @return void
*/
public function remove($name)
{
unset($this->content[$name]);
}
/**
* Rename an object in container
*
* @param string $name Name
* @param string $newName New name
*
* @return void
*/
public function rename($name, $newName)
{
$this->content[$newName] = $this->content[$name];
$this->remove($name);
}
/**
* Set values in the container
*
* @param string|array $name Name
* @param mixed $value Value
*
* @return void
*/
public function set($name, $value = null)
{
if (is_array($name)) {
foreach ($name as $key => $val) {
$this->set($key, $val);
}
return;
}
$this->content[$name] = new ValueItem($value);
}
/**
* Register a service in the container
*
* @param string $name Name
* @param mixed $service Service
*
* @return void
*/
public function service($name, $service = null)
{
if (!isset($service)) {
$service = $name;
}
$this->content[$name] = new ServiceItem($this, $service);
}
/**
* Register a factory in the container
*
* @param string $name Name
* @param mixed $factory Factory
*
* @return void
*/
public function factory($name, $factory = null)
{
if (!isset($factory)) {
$factory = $name;
}
$this->content[$name] = new FactoryItem($this, $factory);
}
/**
* Register an alias in the container
*
* @param string $name Name
* @param string $target Target
*
* @return void
*/
public function alias($name, $target)
{
// The target may be not defined yet
$this->content[$name] = new AliasItem($this, $target);
}
/**
* Get the global default container
*
* @return Container
*/
public static function getDefaultContainer()
{
if (!isset(static::$defaultContainer)) {
static::$defaultContainer = new Container();
}
return static::$defaultContainer;
}
}