313 lines
6.1 KiB
PHP
313 lines
6.1 KiB
PHP
<?php namespace Laravel;
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class View_Facade extends Facade {
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public static $resolve = 'view';
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}
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/**
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* The view composer class is responsible for calling the composer on a view and
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* searching through the view composers for a given view name. It is injected
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* into the View_Factory and View instances themselves, and is managed as a singleton
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* by the application IoC container.
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*/
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class View_Composer {
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/**
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* The application instance.
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*
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* @var Application
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*/
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protected $application;
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/**
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* The view composers.
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*
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* @var array
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*/
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protected $composers;
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/**
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* Create a new view composer instance.
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*
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* @param array $composers
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* @return void
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*/
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public function __construct(Application $application, $composers)
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{
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$this->application = $application;
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$this->composers = $composers;
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}
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/**
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* Find the key for a view by name.
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*
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* @param string $name
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* @return string
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*/
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public function name($name)
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{
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foreach ($this->composers as $key => $value)
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{
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if ($name === $value or (isset($value['name']) and $name === $value['name'])) { return $key; }
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}
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}
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/**
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* Call the composer for the view instance.
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*
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* @param View $view
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* @return void
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*/
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public function compose(View $view)
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{
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if (isset($this->composers[$view->view]))
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{
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foreach ((array) $this->composers[$view->view] as $key => $value)
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{
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if ($value instanceof \Closure) return call_user_func($value, $this->application, $view);
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}
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}
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}
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}
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/**
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* The view factory class is responsible for the instantiation of Views. It is typically
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* access through the application instance from a route or controller, and is managed
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* as a singleton by the application IoC container.
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*/
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class View_Factory {
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/**
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* The view composer instance.
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*
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* @var View_Composer
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*/
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protected $composer;
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/**
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* The directory containing the views.
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*
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* @var string
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*/
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protected $path;
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/**
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* Create a new view factory instance.
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*
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* @param View_Composer $composer
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* @param string $path
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* @return void
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*/
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public function __construct(View_Composer $composer, $path)
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{
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$this->composer = $composer;
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$this->path = $path;
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}
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/**
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* Create a new view instance.
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*
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* @param string $view
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* @param array $data
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* @return View
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*/
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public function make($view, $data = array())
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{
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return new View($view, $data, $this->path($view), $this->composer, $this);
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}
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/**
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* Create a new view instance from a view name.
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*
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* @param string $name
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* @param array $data
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* @return View
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*/
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protected function of($name, $data = array())
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{
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if ( ! is_null($view = $this->composer->name($name)))
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{
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return new View($view, $data, $this->path($view), $this->composer, $this);
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}
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throw new \Exception("Named view [$name] is not defined.");
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}
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/**
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* Get the path to a given view on disk.
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*
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* @param string $view
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* @return string
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*/
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protected function path($view)
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{
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return $this->path.str_replace('.', '/', $view).EXT;
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}
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/**
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* Magic Method for handling the dynamic creation of named views.
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*/
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public function __call($method, $parameters)
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{
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if (strpos($method, 'of_') === 0)
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{
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return $this->of(substr($method, 3), Arr::get($parameters, 0, array()));
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}
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}
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}
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/**
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* The view class is returned by the View Factory "make" method, and is the primary
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* class for working with individual views. It provides methods for binding data to
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* views as well as evaluating and rendering their contents.
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*/
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class View {
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/**
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* The name of the view.
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*
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* @var string
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*/
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public $view;
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/**
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* The view data.
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*
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* @var array
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*/
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public $data;
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/**
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* The path to the view on disk.
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*
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* @var string
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*/
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protected $path;
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/**
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* The view composer instance.
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*
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* @var View_Composer
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*/
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protected $composer;
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/**
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* The view factory instance, which is used to create sub-views.
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*
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* @var View_Factory
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*/
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protected $factory;
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/**
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* Create a new view instance.
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*
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* @param string $view
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* @param array $data
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* @param string $path
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* @param View_Composer $composer
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* @param View_Factory $factory
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* @return void
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*/
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public function __construct($view, $data, $path, View_Composer $composer, View_Factory $factory)
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{
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$this->view = $view;
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$this->data = $data;
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$this->path = $path;
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$this->factory = $factory;
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$this->composer = $composer;
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if ( ! file_exists($this->path))
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{
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throw new \Exception('View ['.$this->path.'] does not exist.');
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}
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}
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/**
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* Get the evaluated string content of the view.
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*
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* If the view has a composer, it will be executed. All sub-views and responses will
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* also be evaluated and converted to their string values.
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*
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* @return string
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*/
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public function render()
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{
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$this->composer->compose($this);
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foreach ($this->data as &$data)
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{
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if ($data instanceof View or $data instanceof Response) $data = $data->render();
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}
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ob_start() and extract($this->data, EXTR_SKIP);
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try { include $this->path; } catch (\Exception $e) { ob_get_clean(); throw $e; }
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return ob_get_clean();
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}
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/**
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* Add a view instance to the view data.
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*
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* @param string $key
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* @param string $view
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* @param array $data
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* @return View
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*/
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public function partial($key, $view, $data = array())
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{
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return $this->with($key, $this->factory->make($view, $data));
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}
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/**
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* Add a key / value pair to the view data.
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*
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* Bound data will be available to the view as variables.
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*
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* @param string $key
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* @param mixed $value
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* @return View
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*/
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public function with($key, $value)
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{
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$this->data[$key] = $value;
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return $this;
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}
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/**
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* Magic Method for getting items from the view data.
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*/
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public function __get($key)
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{
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return $this->data[$key];
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}
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/**
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* Magic Method for setting items in the view data.
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*/
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public function __set($key, $value)
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{
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$this->with($key, $value);
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}
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/**
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* Magic Method for determining if an item is in the view data.
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*/
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public function __isset($key)
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{
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return array_key_exists($key, $this->data);
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}
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/**
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* Magic Method for removing an item from the view data.
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*/
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public function __unset($key)
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{
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unset($this->data[$key]);
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}
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} |