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<?php
namespace Illuminate\View;
use ArrayAccess;
use BadMethodCallException;
use Illuminate\Contracts\Support\Arrayable;
use Illuminate\Contracts\Support\Htmlable;
use Illuminate\Contracts\Support\MessageProvider;
use Illuminate\Contracts\Support\Renderable;
use Illuminate\Contracts\View\Engine;
use Illuminate\Contracts\View\View as ViewContract;
use Illuminate\Support\MessageBag;
use Illuminate\Support\Str;
use Illuminate\Support\Traits\Macroable;
use Illuminate\Support\ViewErrorBag;
use Throwable;
class View implements ArrayAccess, Htmlable, ViewContract
{
use Macroable {
__call as macroCall;
}
/**
* The view factory instance.
*
* @var \Illuminate\View\Factory
*/
protected $factory;
/**
* The engine implementation.
*
* @var \Illuminate\Contracts\View\Engine
*/
protected $engine;
/**
* The name of the view.
*
* @var string
*/
protected $view;
/**
* The array of view data.
*
* @var array
*/
protected $data;
/**
* The path to the view file.
*
* @var string
*/
protected $path;
/**
* Create a new view instance.
*
* @param \Illuminate\View\Factory $factory
* @param \Illuminate\Contracts\View\Engine $engine
* @param string $view
* @param string $path
* @param mixed $data
* @return void
*/
public function __construct(Factory $factory, Engine $engine, $view, $path, $data = [])
{
$this->view = $view;
$this->path = $path;
$this->engine = $engine;
$this->factory = $factory;
$this->data = $data instanceof Arrayable ? $data->toArray() : (array) $data;
}
/**
* Get the string contents of the view.
*
* @param callable|null $callback
* @return array|string
*
* @throws \Throwable
*/
public function render(callable $callback = null)
{
try {
$contents = $this->renderContents();
$response = isset($callback) ? $callback($this, $contents) : null;
// Once we have the contents of the view, we will flush the sections if we are
// done rendering all views so that there is nothing left hanging over when
// another view gets rendered in the future by the application developer.
$this->factory->flushStateIfDoneRendering();
return ! is_null($response) ? $response : $contents;
} catch (Throwable $e) {
$this->factory->flushState();
throw $e;
}
}
/**
* Get the contents of the view instance.
*
* @return string
*/
protected function renderContents()
{
// We will keep track of the amount of views being rendered so we can flush
// the section after the complete rendering operation is done. This will
// clear out the sections for any separate views that may be rendered.
$this->factory->incrementRender();
$this->factory->callComposer($this);
$contents = $this->getContents();
// Once we've finished rendering the view, we'll decrement the render count
// so that each sections get flushed out next time a view is created and
// no old sections are staying around in the memory of an environment.
$this->factory->decrementRender();
return $contents;
}
/**
* Get the evaluated contents of the view.
*
* @return string
*/
protected function getContents()
{
return $this->engine->get($this->path, $this->gatherData());
}
/**
* Get the data bound to the view instance.
*
* @return array
*/
public function gatherData()
{
$data = array_merge($this->factory->getShared(), $this->data);
foreach ($data as $key => $value) {
if ($value instanceof Renderable) {
$data[$key] = $value->render();
}
}
return $data;
}
/**
* Get the sections of the rendered view.
*
* @return array
*
* @throws \Throwable
*/
public function renderSections()
{
return $this->render(function () {
return $this->factory->getSections();
});
}
/**
* Add a piece of data to the view.
*
* @param string|array $key
* @param mixed $value
* @return $this
*/
public function with($key, $value = null)
{
if (is_array($key)) {
$this->data = array_merge($this->data, $key);
} else {
$this->data[$key] = $value;
}
return $this;
}
/**
* Add a view instance to the view data.
*
* @param string $key
* @param string $view
* @param array $data
* @return $this
*/
public function nest($key, $view, array $data = [])
{
return $this->with($key, $this->factory->make($view, $data));
}
/**
* Add validation errors to the view.
*
* @param \Illuminate\Contracts\Support\MessageProvider|array $provider
* @param string $bag
* @return $this
*/
public function withErrors($provider, $bag = 'default')
{
return $this->with('errors', (new ViewErrorBag)->put(
$bag, $this->formatErrors($provider)
));
}
/**
* Parse the given errors into an appropriate value.
*
* @param \Illuminate\Contracts\Support\MessageProvider|array|string $provider
* @return \Illuminate\Support\MessageBag
*/
protected function formatErrors($provider)
{
return $provider instanceof MessageProvider
? $provider->getMessageBag()
: new MessageBag((array) $provider);
}
/**
* Get the name of the view.
*
* @return string
*/
public function name()
{
return $this->getName();
}
/**
* Get the name of the view.
*
* @return string
*/
public function getName()
{
return $this->view;
}
/**
* Get the array of view data.
*
* @return array
*/
public function getData()
{
return $this->data;
}
/**
* Get the path to the view file.
*
* @return string
*/
public function getPath()
{
return $this->path;
}
/**
* Set the path to the view.
*
* @param string $path
* @return void
*/
public function setPath($path)
{
$this->path = $path;
}
/**
* Get the view factory instance.
*
* @return \Illuminate\View\Factory
*/
public function getFactory()
{
return $this->factory;
}
/**
* Get the view's rendering engine.
*
* @return \Illuminate\Contracts\View\Engine
*/
public function getEngine()
{
return $this->engine;
}
/**
* Determine if a piece of data is bound.
*
* @param string $key
* @return bool
*/
public function offsetExists($key)
{
return array_key_exists($key, $this->data);
}
/**
* Get a piece of bound data to the view.
*
* @param string $key
* @return mixed
*/
public function offsetGet($key)
{
return $this->data[$key];
}
/**
* Set a piece of data on the view.
*
* @param string $key
* @param mixed $value
* @return void
*/
public function offsetSet($key, $value)
{
$this->with($key, $value);
}
/**
* Unset a piece of data from the view.
*
* @param string $key
* @return void
*/
public function offsetUnset($key)
{
unset($this->data[$key]);
}
/**
* Get a piece of data from the view.
*
* @param string $key
* @return mixed
*/
public function &__get($key)
{
return $this->data[$key];
}
/**
* Set a piece of data on the view.
*
* @param string $key
* @param mixed $value
* @return void
*/
public function __set($key, $value)
{
$this->with($key, $value);
}
/**
* Check if a piece of data is bound to the view.
*
* @param string $key
* @return bool
*/
public function __isset($key)
{
return isset($this->data[$key]);
}
/**
* Remove a piece of bound data from the view.
*
* @param string $key
* @return void
*/
public function __unset($key)
{
unset($this->data[$key]);
}
/**
* Dynamically bind parameters to the view.
*
* @param string $method
* @param array $parameters
* @return \Illuminate\View\View
*
* @throws \BadMethodCallException
*/
public function __call($method, $parameters)
{
if (static::hasMacro($method)) {
return $this->macroCall($method, $parameters);
}
if (! Str::startsWith($method, 'with')) {
throw new BadMethodCallException(sprintf(
'Method %s::%s does not exist.', static::class, $method
));
}
return $this->with(Str::camel(substr($method, 4)), $parameters[0]);
}
/**
* Get content as a string of HTML.
*
* @return string
*/
public function toHtml()
{
return $this->render();
}
/**
* Get the string contents of the view.
*
* @return string
*
* @throws \Throwable
*/
public function __toString()
{
return $this->render();
}
}