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<?php namespace Illuminate\Pagination;

use Illuminate\Http\Request;
use Illuminate\View\Factory as ViewFactory;
use Symfony\Component\Translation\TranslatorInterface;

class Factory {

/**
	 * The request instance.
	 *
	 * @var \Symfony\Component\HttpFoundation\Request
	 */
	protected $request;

/**
	 * The view factory instance.
	 *
	 * @var \Illuminate\View\Factory
	 */
	protected $view;

/**
	 * The translator implementation.
	 *
	 * @var \Symfony\Component\Translation\TranslatorInterface
	 */
	protected $trans;

/**
	 * The name of the pagination view.
	 *
	 * @var string
	 */
	protected $viewName;

/**
	 * The number of the current page.
	 *
	 * @var int
	 */
	protected $currentPage;

/**
	 * The locale to be used by the translator.
	 *
	 * @var string
	 */
	protected $locale;

/**
	 * The base URL in use by the paginator.
	 *
	 * @var string
	 */
	protected $baseUrl;

/**
	 * The input parameter used for the current page.
	 *
	 * @var string
	 */
	protected $pageName;

/**
	 * Create a new pagination factory.
	 *
	 * @param  \Symfony\Component\HttpFoundation\Request  $request
	 * @param  \Illuminate\View\Factory  $view
	 * @param  \Symfony\Component\Translation\TranslatorInterface  $trans
	 * @param  string  $pageName
	 * @return void
	 */
	public function __construct(Request $request, ViewFactory $view, TranslatorInterface $trans, $pageName = 'page')
	{
		$this->view = $view;
		$this->trans = $trans;
		$this->request = $request;
		$this->pageName = $pageName;
		$this->setupPaginationEnvironment();
	}

/**
	 * Setup the pagination environment.
	 *
	 * @return void
	 */
	protected function setupPaginationEnvironment()
	{
		$this->view->addNamespace('pagination', __DIR__.'/views');
	}

/**
	 * Get a new paginator instance.
	 *
	 * @param  array  $items
	 * @param  int    $total
	 * @param  int|null  $perPage
	 * @return \Illuminate\Pagination\Paginator
	 */
	public function make(array $items, $total, $perPage = null)
	{
		$paginator = new Paginator($this, $items, $total, $perPage);

return $paginator->setupPaginationContext();
	}

/**
	 * Get the pagination view.
	 *
	 * @param  \Illuminate\Pagination\Paginator  $paginator
	 * @param  string  $view
	 * @return \Illuminate\View\View
	 */
	public function getPaginationView(Paginator $paginator, $view = null)
	{
		$data = array('environment' => $this, 'paginator' => $paginator);

return $this->view->make($this->getViewName($view), $data);
	}

/**
	 * Get the number of the current page.
	 *
	 * @return int
	 */
	public function getCurrentPage()
	{
		$page = (int) $this->currentPage ?: $this->request->input($this->pageName, 1);

if ($page < 1 || filter_var($page, FILTER_VALIDATE_INT) === false)
		{
			return 1;
		}

return $page;
	}

/**
	 * Set the number of the current page.
	 *
	 * @param  int  $number
	 * @return void
	 */
	public function setCurrentPage($number)
	{
		$this->currentPage = $number;
	}

/**
	 * Get the root URL for the request.
	 *
	 * @return string
	 */
	public function getCurrentUrl()
	{
		return $this->baseUrl ?: $this->request->url();
	}

/**
	 * Set the base URL in use by the paginator.
	 *
	 * @param  string  $baseUrl
	 * @return void
	 */
	public function setBaseUrl($baseUrl)
	{
		$this->baseUrl = $baseUrl;
	}

/**
	 * Set the input page parameter name used by the paginator.
	 *
	 * @param  string  $pageName
	 * @return void
	 */
	public function setPageName($pageName)
	{
		$this->pageName = $pageName;
	}

/**
	 * Get the input page parameter name used by the paginator.
	 *
	 * @return string
	 */
	public function getPageName()
	{
		return $this->pageName;
	}

/**
	 * Get the name of the pagination view.
	 *
	 * @param  string  $view
	 * @return string
	 */
	public function getViewName($view = null)
	{
		if ( ! is_null($view)) return $view;

return $this->viewName ?: 'pagination::slider';
	}

/**
	 * Set the name of the pagination view.
	 *
	 * @param  string  $viewName
	 * @return void
	 */
	public function setViewName($viewName)
	{
		$this->viewName = $viewName;
	}

/**
	 * Get the locale of the paginator.
	 *
	 * @return string
	 */
	public function getLocale()
	{
		return $this->locale;
	}

/**
	 * Set the locale of the paginator.
	 *
	 * @param  string  $locale
	 * @return void
	 */
	public function setLocale($locale)
	{
		$this->locale = $locale;
	}

/**
	 * Get the active request instance.
	 *
	 * @return \Symfony\Component\HttpFoundation\Request
	 */
	public function getRequest()
	{
		return $this->request;
	}

/**
	 * Set the active request instance.
	 *
	 * @param  \Symfony\Component\HttpFoundation\Request  $request
	 * @return void
	 */
	public function setRequest(Request $request)
	{
		$this->request = $request;
	}

/**
	 * Get the current view factory.
	 *
	 * @return \Illuminate\View\Factory
	 */
	public function getViewFactory()
	{
		return $this->view;
	}

/**
	 * Set the current view factory.
	 *
	 * @param  \Illuminate\View\Factory  $view
	 * @return void
	 */
	public function setViewFactory(ViewFactory $view)
	{
		$this->view = $view;
	}

/**
	 * Get the translator instance.
	 *
	 * @return \Symfony\Component\Translation\TranslatorInterface
	 */
	public function getTranslator()
	{
		return $this->trans;
	}

}

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