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<?php
namespace Collective\Html;
use BadMethodCallException;
use Illuminate\Support\Arr;
use Illuminate\Support\HtmlString;
trait Componentable
{
/**
* The registered components.
*
* @var array
*/
protected static $components = [];
/**
* Register a custom component.
*
* @param $name
* @param $view
* @param array $signature
*
* @return void
*/
public static function component($name, $view, array $signature)
{
static::$components[$name] = compact('view', 'signature');
}
/**
* Check if a component is registered.
*
* @param $name
*
* @return bool
*/
public static function hasComponent($name)
{
return isset(static::$components[$name]);
}
/**
* Render a custom component.
*
* @param $name
* @param array $arguments
*
* @return HtmlString
*/
protected function renderComponent($name, array $arguments)
{
$component = static::$components[$name];
$data = $this->getComponentData($component['signature'], $arguments);
return new HtmlString(
$this->view->make($component['view'], $data)->render()
);
}
/**
* Prepare the component data, while respecting provided defaults.
*
* @param array $signature
* @param array $arguments
*
* @return array
*/
protected function getComponentData(array $signature, array $arguments)
{
$data = [];
$i = 0;
foreach ($signature as $variable => $default) {
// If the "variable" value is actually a numeric key, we can assume that
// no default had been specified for the component argument and we'll
// just use null instead, so that we can treat them all the same.
if (is_numeric($variable)) {
$variable = $default;
$default = null;
}
$data[$variable] = Arr::get($arguments, $i, $default);
$i++;
}
return $data;
}
/**
* Dynamically handle calls to the class.
*
* @param string $method
* @param array $parameters
*
* @return \Illuminate\Contracts\View\View|mixed
*
* @throws \BadMethodCallException
*/
public function __call($method, $parameters)
{
if (static::hasComponent($method)) {
return $this->renderComponent($method, $parameters);
}
throw new BadMethodCallException("Method {$method} does not exist.");
}
}
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