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<?php
/**
 * @package     FOF
 * @copyright   Copyright (c)2010-2019 Nicholas K. Dionysopoulos / Akeeba Ltd
 * @license     GNU GPL version 2 or later
 */

namespace FOF30\View\DataView;

use FOF30\Form\Form as FormObject;
use FOF30\Model\DataModel;
use FOF30\Render\RenderInterface;

defined('_JEXEC') or die;

/**
 * Class Form
 * @package FOF30\View\DataView
 *
 * @deprecated 3.1  Support for XML forms will be removed in FOF 4
 */
class Form extends Html implements DataViewInterface
{
	/** @var  FormObject  The form to render */
	protected $form;

/**
	 * Displays the view
	 *
	 * @param   string  $tpl  The template to use
	 *
	 * @return  boolean|null False if we can't render anything
	 *
	 * @throws  \Exception
	 */
	public function display($tpl = null)
	{
		/** @var DataModel $model */
		$model = $this->getModel();

// Get the form
		$this->form = $model->getForm();
		$this->form->setModel($model);
		$this->form->setView($this);

$eventName = 'onBefore' . ucfirst($this->doTask);
		$this->triggerEvent($eventName, array($tpl));

$preRenderResult = '';

if ($this->doPreRender)
		{
			@ob_start();
			$this->preRender();
			$preRenderResult = @ob_get_contents();
			@ob_end_clean();
		}

try
		{
			$templateResult = $this->loadTemplate($tpl);
		}
		catch (\Exception $e)
		{
			$templateResult = $this->getRenderedForm();
		}

$eventName = 'onAfter' . ucfirst($this->doTask);
		$this->triggerEvent($eventName, array($tpl));

if (is_object($templateResult) && ($templateResult instanceof \Exception))
		{
			throw $templateResult;
		}

echo $preRenderResult . $templateResult;

if ($this->doPostRender)
		{
			$this->postRender();
		}

return true;
	}

/**
	 * Returns the HTML rendering of the F0FForm attached to this view. Very
	 * useful for customising a form page without having to meticulously hand-
	 * code the entire form.
	 *
	 * @return  string  The HTML of the rendered form
	 */
	public function getRenderedForm()
	{
		$html = '';
		$renderer = $this->container->renderer;

if ($renderer instanceof RenderInterface)
		{
			// Load CSS and Javascript files defined in the form
			$this->form->loadCSSFiles();
			$this->form->loadJSFiles();

/** @var  DataModel  $model */
			$model = $this->getModel();

// Get the form's HTML
			$html = $renderer->renderForm($this->form, $model);
		}

return $html;
	}
}

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