<?php
/**
 * @package     Joomla.Administrator
 * @subpackage  com_users
 *
 * @copyright   (C) 2009 Open Source Matters, Inc. <https://www.joomla.org>
 * @license     GNU General Public License version 2 or later; see LICENSE.txt
 */

namespace Joomla\Component\Users\Administrator\View\Level;

\defined('_JEXEC') or die;

use Joomla\CMS\Factory;
use Joomla\CMS\Helper\ContentHelper;
use Joomla\CMS\Language\Text;
use Joomla\CMS\MVC\View\GenericDataException;
use Joomla\CMS\MVC\View\HtmlView as BaseHtmlView;
use Joomla\CMS\Object\CMSObject;
use Joomla\CMS\Toolbar\ToolbarHelper;

/**
 * View to edit a user view level.
 *
 * @since  1.6
 */
class HtmlView extends BaseHtmlView
{
	/**
	 * The \JForm object
	 *
	 * @var  \JForm
	 */
	protected $form;

	/**
	 * The item data.
	 *
	 * @var   object
	 * @since 1.6
	 */
	protected $item;

	/**
	 * The model state.
	 *
	 * @var   CMSObject
	 * @since 1.6
	 */
	protected $state;

	/**
	 * Display the view
	 *
	 * @param   string  $tpl  The name of the template file to parse; automatically searches through the template paths.
	 *
	 * @return  void
	 */
	public function display($tpl = null)
	{
		$this->form  = $this->get('Form');
		$this->item  = $this->get('Item');
		$this->state = $this->get('State');

		// Check for errors.
		if (count($errors = $this->get('Errors')))
		{
			throw new GenericDataException(implode("\n", $errors), 500);
		}

		$this->addToolbar();
		parent::display($tpl);
	}

	/**
	 * Add the page title and toolbar.
	 *
	 * @return  void
	 *
	 * @since   1.6
	 * @throws  \Exception
	 */
	protected function addToolbar()
	{
		Factory::getApplication()->input->set('hidemainmenu', true);

		$isNew = ($this->item->id == 0);
		$canDo = ContentHelper::getActions('com_users');

		ToolbarHelper::title(Text::_($isNew ? 'COM_USERS_VIEW_NEW_LEVEL_TITLE' : 'COM_USERS_VIEW_EDIT_LEVEL_TITLE'), 'user-lock levels-add');

		$toolbarButtons = [];

		if ($canDo->get('core.edit') || $canDo->get('core.create'))
		{
			ToolbarHelper::apply('level.apply');
			$toolbarButtons[] = ['save', 'level.save'];
		}

		if ($canDo->get('core.create'))
		{
			$toolbarButtons[] = ['save2new', 'level.save2new'];
		}

		// If an existing item, can save to a copy.
		if (!$isNew && $canDo->get('core.create'))
		{
			$toolbarButtons[] = ['save2copy', 'level.save2copy'];
		}

		ToolbarHelper::saveGroup(
			$toolbarButtons,
			'btn-success'
		);

		if (empty($this->item->id))
		{
			ToolbarHelper::cancel('level.cancel');
		}
		else
		{
			ToolbarHelper::cancel('level.cancel', 'JTOOLBAR_CLOSE');
		}

		ToolbarHelper::divider();
		ToolbarHelper::help('JHELP_USERS_ACCESS_LEVELS_EDIT');
	}
}

• [F] HtmlView.php
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