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<?php |
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/** |
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* @package Fuel\Foundation |
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* @version 2.0 |
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* @author Fuel Development Team |
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* @license MIT License |
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* @copyright 2010 - 2016 Fuel Development Team |
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* @link http://fuelphp.com |
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*/ |
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declare(strict_types=1); |
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namespace Fuel\Foundation; |
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use Fuel\Foundation\Exception\ComponentLoad; |
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/** |
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* Keeps track of fuel's components |
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* |
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* @package Fuel\Foundation |
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*/ |
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class ComponentManager implements ComponentManagerInterface |
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{ |
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protected static $componentClassName = 'FuelComponent'; |
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/** |
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* @var ComponentInterface[] |
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*/ |
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protected $loadedComponents = []; |
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/** |
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* Contains a list of component paths for components that have already been requested, indexed by component name. |
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* |
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* @var string[] |
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*/ |
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protected $availableComponents = []; |
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/** |
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* Gets a component, loading it if needed. |
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* |
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* @param string $name |
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* |
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* @return ComponentInterface |
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*/ |
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public function get(string $name) : ComponentInterface |
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{ |
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if ($this->loaded($name)) |
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{ |
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return $this->loadedComponents[$name]; |
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} |
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return $this->load($name); |
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} |
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/** |
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* Loads the given component. |
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* |
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* TODO: Also load dependant components |
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* |
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* @param string $name |
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* |
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* @return ComponentInterface |
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*/ |
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public function load(string $name) : ComponentInterface |
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{ |
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$fullName = $name . '\\' . static::$componentClassName; |
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// Check if component class exists |
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if ( ! class_exists($fullName)) |
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{ |
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throw new ComponentLoad("FOU-001: Unable to load [$fullName]: Class not found"); |
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} |
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// Check if it implements the correct interface |
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if ( ! in_array('Fuel\Foundation\ComponentInterface', class_implements($fullName))) |
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{ |
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throw new ComponentLoad("FOU-002: Unable to load [$fullName]: Does not implement ComponentInterface"); |
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} |
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// Load the component |
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$component = new $fullName(); |
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$this->loadedComponents[$name] = $component; |
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return $component; |
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} |
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/** |
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* Loads a component by name. |
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* |
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* @param string $name |
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* |
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* @return bool |
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*/ |
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public function loaded(string $name) : bool |
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{ |
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return isset($this->loadedComponents[$name]); |
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} |
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/** |
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* Unloads a component. |
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* |
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* @param string $name |
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* |
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* @return ComponentManagerInterface |
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*/ |
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public function unload(string $name) : ComponentManagerInterface |
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{ |
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if ($this->loaded($name)) |
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{ |
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unset($this->loadedComponents[$name]); |
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} |
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return $this; |
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} |
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} |
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fuelphp /
foundation
