/src/Illuminate/View/Environment.php
PHP | 577 lines | 236 code | 72 blank | 269 comment | 7 complexity | 1540ce1d3495dc01ae76a05ef189e0eb MD5 | raw file
- <?php namespace Illuminate\View;
- use Closure;
- use Illuminate\Events\Dispatcher;
- use Illuminate\Container\Container;
- use Illuminate\View\Engines\EngineResolver;
- class Environment {
- /**
- * The engine implementation.
- *
- * @var \Illuminate\View\Engines\EngineResolver
- */
- protected $engines;
- /**
- * The view finder implementation.
- *
- * @var \Illuminate\View\ViewFinderInterface
- */
- protected $finder;
- /**
- * The event dispatcher instance.
- *
- * @var \Illuminate\Events\Dispatcher
- */
- protected $events;
- /**
- * The IoC container instance.
- *
- * @var \Illuminate\Container
- */
- protected $container;
- /**
- * Data that should be available to all templates.
- *
- * @var array
- */
- protected $shared = array();
- /**
- * The extension to engine bindings.
- *
- * @var array
- */
- protected $extensions = array('blade.php' => 'blade', 'php' => 'php');
- /**
- * The view composer events.
- *
- * @var array
- */
- protected $composers = array();
- /**
- * All of the finished, captured sections.
- *
- * @var array
- */
- protected $sections = array();
- /**
- * The stack of in-progress sections.
- *
- * @var array
- */
- protected $sectionStack = array();
- /**
- * The number of active rendering operations.
- *
- * @var int
- */
- protected $renderCount = 0;
- /**
- * Create a new view environment instance.
- *
- * @param \Illuminate\View\Engines\EngineResolver $engines
- * @param \Illuminate\View\ViewFinderInterface $finder
- * @param \Illuminate\Events\Dispatcher $events
- * @return void
- */
- public function __construct(EngineResolver $engines, ViewFinderInterface $finder, Dispatcher $events)
- {
- $this->finder = $finder;
- $this->events = $events;
- $this->engines = $engines;
- $this->share('__env', $this);
- }
- /**
- * Get a evaluated view contents for the given view.
- *
- * @param string $view
- * @param mixed $data
- * @return \Illuminate\View\View
- */
- public function make($view, $data = array())
- {
- $path = $this->finder->find($view);
- return new View($this, $this->getEngineFromPath($path), $view, $path, $data);
- }
- /**
- * Determine if a given view exists.
- *
- * @param string $view
- * @return bool
- */
- public function exists($view)
- {
- try
- {
- $this->finder->find($view);
- }
- catch (\InvalidArgumentException $e)
- {
- return false;
- }
- return true;
- }
- /**
- * Get the rendered contents of a partial from a loop.
- *
- * @param string $view
- * @param array $data
- * @param string $iterator
- * @param string $empty
- * @return string
- */
- public function renderEach($view, $data, $iterator, $empty = 'raw|')
- {
- $result = '';
- // If is actually data in the array, we will loop through the data and append
- // an instance of the partial view to the final result HTML passing in the
- // iterated value of this data array, allowing the views to access them.
- if (count($data) > 0)
- {
- foreach ($data as $key => $value)
- {
- $data = array('key' => $key, $iterator => $value);
- $result .= $this->make($view, $data)->render();
- }
- }
- // If there is no data in the array, we will render the contents of the empty
- // view. Alternatively, the "empty view" could be a raw string that begins
- // with "raw|" for convenience and to let this know that it is a string.
- else
- {
- if (starts_with($empty, 'raw|'))
- {
- $result = substr($empty, 4);
- }
- else
- {
- $result = $this->make($empty)->render();
- }
- }
- return $result;
- }
- /**
- * Get the appropriate view engine for the given path.
- *
- * @param string $path
- * @return \Illuminate\View\Engines\EngineInterface
- */
- protected function getEngineFromPath($path)
- {
- $engine = $this->extensions[$this->getExtension($path)];
- return $this->engines->resolve($engine);
- }
- /**
- * Get the extension used by the view file.
- *
- * @param string $path
- * @return string
- */
- protected function getExtension($path)
- {
- $extensions = array_keys($this->extensions);
- return array_first($extensions, function($key, $value) use ($path)
- {
- return ends_with($path, $value);
- });
- }
- /**
- * Add a piece of shared data to the environment.
- *
- * @param string $key
- * @param mixed $value
- * @return void
- */
- public function share($key, $value)
- {
- $this->shared[$key] = $value;
- }
- /**
- * Register a view composer event.
- *
- * @param array|string $views
- * @param Closure|string $callback
- * @return Closure
- */
- public function composer($views, $callback)
- {
- $composers = array();
- foreach ((array) $views as $view)
- {
- $composers[] = $this->addComposer($view, $callback);
- }
- return $composers;
- }
- /**
- * Add a composer for a given view.
- *
- * @param string $view
- * @param Closure|string $callback
- * @return Closure
- */
- protected function addComposer($view, $callback)
- {
- if ($callback instanceof Closure)
- {
- $this->events->listen('composing: '.$view, $callback);
- return $callback;
- }
- elseif (is_string($callback))
- {
- return $this->addClassComposer($view, $callback);
- }
- }
- /**
- * Register a class based view composer.
- *
- * @param string $view
- * @param string $class
- * @return Closure
- */
- protected function addClassComposer($view, $class)
- {
- $name = 'composing: '.$view;
- // When registering a class based view "composer", we will simply resolve the
- // classes from the application IoC container then call the compose method
- // on the instance. This allows for convenient, testable view composers.
- $callback = $this->buildClassComposerCallback($class);
- $this->events->listen($name, $callback);
- return $callback;
- }
- /**
- * Build a class based container callback Closure.
- *
- * @param string $class
- * @return Closure
- */
- protected function buildClassComposerCallback($class)
- {
- $container = $this->container;
- list($class, $method) = $this->parseClassComposer($class);
- // Once we have the class and method name, we can build the Closure to resolve
- // the instance out of the IoC container and call the method on it with the
- // given arguments that are passed to the Closure as the composer's data.
- return function() use ($class, $method, $container)
- {
- $callable = array($container->make($class), $method);
- return call_user_func_array($callable, func_get_args());
- };
- }
- /**
- * Parse a class based composer name.
- *
- * @param string $class
- * @return array
- */
- protected function parseClassComposer($class)
- {
- return str_contains($class, '@') ? explode('@', $class) : array($class, 'compose');
- }
- /**
- * Call the composer for a given view.
- *
- * @param \Illuminate\View\View $view
- * @return void
- */
- public function callComposer(View $view)
- {
- $this->events->fire('composing: '.$view->getName(), array($view));
- }
- /**
- * Start injecting content into a section.
- *
- * @param string $section
- * @param string $content
- * @return void
- */
- public function startSection($section, $content = '')
- {
- if ($content === '')
- {
- ob_start() and $this->sectionStack[] = $section;
- }
- else
- {
- $this->extendSection($section, $content);
- }
- }
- /**
- * Inject inline content into a section.
- *
- * @param string $section
- * @param string $content
- * @return void
- */
- public function inject($section, $content)
- {
- return $this->startSection($section, $content);
- }
- /**
- * Stop injecting content into a section and return its contents.
- *
- * @return string
- */
- public function yieldSection()
- {
- return $this->yieldContent($this->stopSection());
- }
- /**
- * Stop injecting content into a section.
- *
- * @return string
- */
- public function stopSection()
- {
- $last = array_pop($this->sectionStack);
- $this->extendSection($last, ob_get_clean());
- return $last;
- }
- /**
- * Append content to a given section.
- *
- * @param string $section
- * @param string $content
- * @return void
- */
- protected function extendSection($section, $content)
- {
- if (isset($this->sections[$section]))
- {
- $content = str_replace('@parent', $content, $this->sections[$section]);
- $this->sections[$section] = $content;
- }
- else
- {
- $this->sections[$section] = $content;
- }
- }
- /**
- * Get the string contents of a section.
- *
- * @param string $section
- * @return string
- */
- public function yieldContent($section)
- {
- return isset($this->sections[$section]) ? $this->sections[$section] : '';
- }
- /**
- * Flush all of the section contents.
- *
- * @return void
- */
- public function flushSections()
- {
- $this->sections = array();
- $this->sectionStack = array();
- }
- /**
- * Increment the rendering counter.
- *
- * @return void
- */
- public function incrementRender()
- {
- $this->renderCount++;
- }
- /**
- * Decrement the rendering counter.
- *
- * @return void
- */
- public function decrementRender()
- {
- $this->renderCount--;
- }
- /**
- * Check if there are no active render operations.
- *
- * @return bool
- */
- public function doneRendering()
- {
- return $this->renderCount == 0;
- }
- /**
- * Add a location to the array of view locations.
- *
- * @param string $location
- * @return void
- */
- public function addLocation($location)
- {
- $this->finder->addLocation($location);
- }
- /**
- * Add a new namespace to the loader.
- *
- * @param string $namespace
- * @param string|array $hints
- * @return void
- */
- public function addNamespace($namespace, $hints)
- {
- $this->finder->addNamespace($namespace, $hints);
- }
- /**
- * Register a valid view extension and its engine.
- *
- * @param string $extension
- * @param string $engine
- * @param Closure $resolver
- * @return void
- */
- public function addExtension($extension, $engine, $resolver = null)
- {
- $this->finder->addExtension($extension);
- if (isset($resolver))
- {
- $this->engines->register($engine, $resolver);
- }
- unset($this->extensions[$engine]);
- $this->extensions = array_merge(array($extension => $engine), $this->extensions);
- }
- /**
- * Get the extension to engine bindings.
- *
- * @return array
- */
- public function getExtensions()
- {
- return $this->extensions;
- }
- /**
- * Get the engine resolver instance.
- *
- * @return \Illuminate\View\Engines\EngineResolver
- */
- public function getEngineResolver()
- {
- return $this->engines;
- }
- /**
- * Get the view finder instance.
- *
- * @return \Illuminate\View\ViewFinderInterface
- */
- public function getFinder()
- {
- return $this->finder;
- }
- /**
- * Get the event dispatcher instance.
- *
- * @return \Illuminate\Events\Dispatcher
- */
- public function getDispatcher()
- {
- return $this->events;
- }
- /**
- * Get the IoC container instance.
- *
- * @return \Illuminate\Container\Container
- */
- public function getContainer()
- {
- return $this->container;
- }
- /**
- * Set the IoC container instance.
- *
- * @param \Illuminate\Container\Container $container
- * @return void
- */
- public function setContainer(Container $container)
- {
- $this->container = $container;
- }
- /**
- * Get all of the shared data for the environment.
- *
- * @return array
- */
- public function getShared()
- {
- return $this->shared;
- }
- /**
- * Get the entire array of sections.
- *
- * @return array
- */
- public function getSections()
- {
- return $this->sections;
- }
- }