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<?php
namespace Illuminate\View;
use Illuminate\Contracts\Container\Container;
use Illuminate\Contracts\Events\Dispatcher;
use Illuminate\Contracts\Support\Arrayable;
use Illuminate\Contracts\View\Factory as FactoryContract;
use Illuminate\Support\Arr;
use Illuminate\Support\Str;
use Illuminate\Support\Traits\Macroable;
use Illuminate\View\Engines\EngineResolver;
use InvalidArgumentException;
class Factory implements FactoryContract
{
use Macroable,
Concerns\ManagesComponents,
Concerns\ManagesEvents,
Concerns\ManagesLayouts,
Concerns\ManagesLoops,
Concerns\ManagesStacks,
Concerns\ManagesTranslations;
/**
* 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\Contracts\Events\Dispatcher
*/
protected $events;
/**
* The IoC container instance.
*
* @var \Illuminate\Contracts\Container\Container
*/
protected $container;
/**
* Data that should be available to all templates.
*
* @var array
*/
protected $shared = [];
/**
* The extension to engine bindings.
*
* @var array
*/
protected $extensions = [
'blade.php' => 'blade',
'php' => 'php',
'css' => 'file',
'html' => 'file',
];
/**
* The view composer events.
*
* @var array
*/
protected $composers = [];
/**
* The number of active rendering operations.
*
* @var int
*/
protected $renderCount = 0;
/**
* The "once" block IDs that have been rendered.
*
* @var array
*/
protected $renderedOnce = [];
/**
* Create a new view factory instance.
*
* @param \Illuminate\View\Engines\EngineResolver $engines
* @param \Illuminate\View\ViewFinderInterface $finder
* @param \Illuminate\Contracts\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 the evaluated view contents for the given view.
*
* @param string $path
* @param \Illuminate\Contracts\Support\Arrayable|array $data
* @param array $mergeData
* @return \Illuminate\Contracts\View\View
*/
public function file($path, $data = [], $mergeData = [])
{
$data = array_merge($mergeData, $this->parseData($data));
return tap($this->viewInstance($path, $path, $data), function ($view) {
$this->callCreator($view);
});
}
/**
* Get the evaluated view contents for the given view.
*
* @param string $view
* @param \Illuminate\Contracts\Support\Arrayable|array $data
* @param array $mergeData
* @return \Illuminate\Contracts\View\View
*/
public function make($view, $data = [], $mergeData = [])
{
$path = $this->finder->find(
$view = $this->normalizeName($view)
);
// Next, we will create the view instance and call the view creator for the view
// which can set any data, etc. Then we will return the view instance back to
// the caller for rendering or performing other view manipulations on this.
$data = array_merge($mergeData, $this->parseData($data));
return tap($this->viewInstance($view, $path, $data), function ($view) {
$this->callCreator($view);
});
}
/**
* Get the first view that actually exists from the given list.
*
* @param array $views
* @param \Illuminate\Contracts\Support\Arrayable|array $data
* @param array $mergeData
* @return \Illuminate\Contracts\View\View
*
* @throws \InvalidArgumentException
*/
public function first(array $views, $data = [], $mergeData = [])
{
$view = Arr::first($views, function ($view) {
return $this->exists($view);
});
if (! $view) {
throw new InvalidArgumentException('None of the views in the given array exist.');
}
return $this->make($view, $data, $mergeData);
}
/**
* Get the rendered content of the view based on a given condition.
*
* @param bool $condition
* @param string $view
* @param \Illuminate\Contracts\Support\Arrayable|array $data
* @param array $mergeData
* @return string
*/
public function renderWhen($condition, $view, $data = [], $mergeData = [])
{
if (! $condition) {
return '';
}
return $this->make($view, $this->parseData($data), $mergeData)->render();
}
/**
* 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) {
$result .= $this->make(
$view, ['key' => $key, $iterator => $value]
)->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 {
$result = Str::startsWith($empty, 'raw|')
? substr($empty, 4)
: $this->make($empty)->render();
}
return $result;
}
/**
* Normalize a view name.
*
* @param string $name
* @return string
*/
protected function normalizeName($name)
{
return ViewName::normalize($name);
}
/**
* Parse the given data into a raw array.
*
* @param mixed $data
* @return array
*/
protected function parseData($data)
{
return $data instanceof Arrayable ? $data->toArray() : $data;
}
/**
* Create a new view instance from the given arguments.
*
* @param string $view
* @param string $path
* @param \Illuminate\Contracts\Support\Arrayable|array $data
* @return \Illuminate\Contracts\View\View
*/
protected function viewInstance($view, $path, $data)
{
return new View($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 appropriate view engine for the given path.
*
* @param string $path
* @return \Illuminate\Contracts\View\Engine
*
* @throws \InvalidArgumentException
*/
public function getEngineFromPath($path)
{
if (! $extension = $this->getExtension($path)) {
throw new InvalidArgumentException("Unrecognized extension in file: {$path}.");
}
$engine = $this->extensions[$extension];
return $this->engines->resolve($engine);
}
/**
* Get the extension used by the view file.
*
* @param string $path
* @return string|null
*/
protected function getExtension($path)
{
$extensions = array_keys($this->extensions);
return Arr::first($extensions, function ($value) use ($path) {
return Str::endsWith($path, '.'.$value);
});
}
/**
* Add a piece of shared data to the environment.
*
* @param array|string $key
* @param mixed|null $value
* @return mixed
*/
public function share($key, $value = null)
{
$keys = is_array($key) ? $key : [$key => $value];
foreach ($keys as $key => $value) {
$this->shared[$key] = $value;
}
return $value;
}
/**
* 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;
}
/**
* Determine if the given once token has been rendered.
*
* @param string $id
* @return bool
*/
public function hasRenderedOnce(string $id)
{
return isset($this->renderedOnce[$id]);
}
/**
* Mark the given once token as having been rendered.
*
* @param string $id
* @return void
*/
public function markAsRenderedOnce(string $id)
{
$this->renderedOnce[$id] = true;
}
/**
* 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 $this
*/
public function addNamespace($namespace, $hints)
{
$this->finder->addNamespace($namespace, $hints);
return $this;
}
/**
* Prepend a new namespace to the loader.
*
* @param string $namespace
* @param string|array $hints
* @return $this
*/
public function prependNamespace($namespace, $hints)
{
$this->finder->prependNamespace($namespace, $hints);
return $this;
}
/**
* Replace the namespace hints for the given namespace.
*
* @param string $namespace
* @param string|array $hints
* @return $this
*/
public function replaceNamespace($namespace, $hints)
{
$this->finder->replaceNamespace($namespace, $hints);
return $this;
}
/**
* Register a valid view extension and its engine.
*
* @param string $extension
* @param string $engine
* @param \Closure|null $resolver
* @return void
*/
public function addExtension($extension, $engine, $resolver = null)
{
$this->finder->addExtension($extension);
if (isset($resolver)) {
$this->engines->register($engine, $resolver);
}
unset($this->extensions[$extension]);
$this->extensions = array_merge([$extension => $engine], $this->extensions);
}
/**
* Flush all of the factory state like sections and stacks.
*
* @return void
*/
public function flushState()
{
$this->renderCount = 0;
$this->renderedOnce = [];
$this->flushSections();
$this->flushStacks();
}
/**
* Flush all of the section contents if done rendering.
*
* @return void
*/
public function flushStateIfDoneRendering()
{
if ($this->doneRendering()) {
$this->flushState();
}
}
/**
* 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;
}
/**
* Set the view finder instance.
*
* @param \Illuminate\View\ViewFinderInterface $finder
* @return void
*/
public function setFinder(ViewFinderInterface $finder)
{
$this->finder = $finder;
}
/**
* Flush the cache of views located by the finder.
*
* @return void
*/
public function flushFinderCache()
{
$this->getFinder()->flush();
}
/**
* Get the event dispatcher instance.
*
* @return \Illuminate\Contracts\Events\Dispatcher
*/
public function getDispatcher()
{
return $this->events;
}
/**
* Set the event dispatcher instance.
*
* @param \Illuminate\Contracts\Events\Dispatcher $events
* @return void
*/
public function setDispatcher(Dispatcher $events)
{
$this->events = $events;
}
/**
* Get the IoC container instance.
*
* @return \Illuminate\Contracts\Container\Container
*/
public function getContainer()
{
return $this->container;
}
/**
* Set the IoC container instance.
*
* @param \Illuminate\Contracts\Container\Container $container
* @return void
*/
public function setContainer(Container $container)
{
$this->container = $container;
}
/**
* Get an item from the shared data.
*
* @param string $key
* @param mixed $default
* @return mixed
*/
public function shared($key, $default = null)
{
return Arr::get($this->shared, $key, $default);
}
/**
* Get all of the shared data for the environment.
*
* @return array
*/
public function getShared()
{
return $this->shared;
}
}