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<?php
/**
 * @package     Joomla.Administrator
 * @subpackage  com_modules
 *
 * @copyright   (C) 2008 Open Source Matters, Inc. <https://www.joomla.org>
 * @license     GNU General Public License version 2 or later; see LICENSE.txt
 */

namespace Joomla\Component\Modules\Administrator\View\Modules;

\defined('_JEXEC') or die;

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

/**
 * View class for a list of modules.
 *
 * @since  1.6
 */
class HtmlView extends BaseHtmlView
{
	/**
	 * An array of items
	 *
	 * @var  array
	 */
	protected $items;

/**
	 * The pagination object
	 *
	 * @var  \JPagination
	 */
	protected $pagination;

/**
	 * The model state
	 *
	 * @var  \JObject
	 */
	protected $state;

/**
	 * Form object for search filters
	 *
	 * @var    \JForm
	 * @since  4.0.0
	 */
	public $filterForm;

/**
	 * The active search filters
	 *
	 * @var    array
	 * @since  4.0.0
	 */
	public $activeFilters;

/**
	 * Is this view an Empty State
	 *
	 * @var  boolean
	 * @since 4.0.0
	 */
	private $isEmptyState = false;

/**
	 * Display the view
	 *
	 * @param   string  $tpl  The name of the template file to parse; automatically searches through the template paths.
	 *
	 * @return  void
	 *
	 * @since   1.6
	 */
	public function display($tpl = null)
	{
		$this->items         = $this->get('Items');
		$this->pagination    = $this->get('Pagination');
		$this->state         = $this->get('State');
		$this->total         = $this->get('Total');
		$this->filterForm    = $this->get('FilterForm');
		$this->activeFilters = $this->get('ActiveFilters');
		$this->clientId      = $this->state->get('client_id');

if (!count($this->items) && $this->isEmptyState = $this->get('IsEmptyState'))
		{
			$this->setLayout('emptystate');
		}

/**
		 * The code below make sure the remembered position will be available from filter dropdown even if there are no
		 * modules available for this position. This will make the UI less confusing for users in case there is only one
		 * module in the selected position and user:
		 * 1. Edit the module, change it to new position, save it and come back to Modules Management Screen
		 * 2. Or move that module to new position using Batch action
		 */
		if (count($this->items) === 0 && $this->state->get('filter.position'))
		{
			$selectedPosition = $this->state->get('filter.position');
			$positionField    = $this->filterForm->getField('position', 'filter');

$positionExists = false;

foreach ($positionField->getOptions() as $option)
			{
				if ($option->value === $selectedPosition)
				{
					$positionExists = true;
					break;
				}
			}

if ($positionExists === false)
			{
				$positionField->addOption($selectedPosition, ['value' => $selectedPosition]);
			}
		}

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

// We do not need the Language filter when modules are not filtered
		if ($this->clientId == 1 && !ModuleHelper::isAdminMultilang())
		{
			unset($this->activeFilters['language']);
			$this->filterForm->removeField('language', 'filter');
		}

// We don't need the toolbar in the modal window.
		if ($this->getLayout() !== 'modal')
		{
			$this->addToolbar();

// We do not need to filter by language when multilingual is disabled
			if (!Multilanguage::isEnabled())
			{
				unset($this->activeFilters['language']);
				$this->filterForm->removeField('language', 'filter');
			}
		}
		// If in modal layout.
		else
		{
			// Client id selector should not exist.
			$this->filterForm->removeField('client_id', '');

// If in the frontend state and language should not activate the search tools.
			if (Factory::getApplication()->isClient('site'))
			{
				unset($this->activeFilters['state']);
				unset($this->activeFilters['language']);
			}
		}

parent::display($tpl);
	}

/**
	 * Add the page title and toolbar.
	 *
	 * @return  void
	 *
	 * @since   1.6
	 */
	protected function addToolbar()
	{
		$state = $this->get('State');
		$canDo = ContentHelper::getActions('com_modules');
		$user  = Factory::getUser();

// Get the toolbar object instance
		$toolbar = Toolbar::getInstance('toolbar');

if ($state->get('client_id') == 1)
		{
			ToolbarHelper::title(Text::_('COM_MODULES_MANAGER_MODULES_ADMIN'), 'cube module');
		}
		else
		{
			ToolbarHelper::title(Text::_('COM_MODULES_MANAGER_MODULES_SITE'), 'cube module');
		}

if ($canDo->get('core.create'))
		{
			$toolbar->standardButton('new', 'JTOOLBAR_NEW')
				->onclick("location.href='index.php?option=com_modules&view=select&client_id=" . $this->state->get('client_id', 0) . "'");
		}

if (!$this->isEmptyState && ($canDo->get('core.edit.state') || Factory::getUser()->authorise('core.admin')))
		{
			$dropdown = $toolbar->dropdownButton('status-group')
				->text('JTOOLBAR_CHANGE_STATUS')
				->toggleSplit(false)
				->icon('icon-ellipsis-h')
				->buttonClass('btn btn-action')
				->listCheck(true);

$childBar = $dropdown->getChildToolbar();

if ($canDo->get('core.edit.state'))
			{
				$childBar->publish('modules.publish')->listCheck(true);

$childBar->unpublish('modules.unpublish')->listCheck(true);
			}

if (Factory::getUser()->authorise('core.admin'))
			{
				$childBar->checkin('modules.checkin')->listCheck(true);
			}

if ($canDo->get('core.edit.state') && $this->state->get('filter.published') != -2)
			{
				$childBar->trash('modules.trash')->listCheck(true);
			}

// Add a batch button
			if ($user->authorise('core.create', 'com_modules') && $user->authorise('core.edit', 'com_modules')
				&& $user->authorise('core.edit.state', 'com_modules'))
			{
				$childBar->popupButton('batch')
					->text('JTOOLBAR_BATCH')
					->selector('collapseModal')
					->listCheck(true);
			}

if ($canDo->get('core.create'))
			{
				$childBar->standardButton('copy')
					->text('JTOOLBAR_DUPLICATE')
					->task('modules.duplicate')
					->listCheck(true);
			}
		}

if (!$this->isEmptyState && ($state->get('filter.state') == -2 && $canDo->get('core.delete')))
		{
			$toolbar->delete('modules.delete')
				->text('JTOOLBAR_EMPTY_TRASH')
				->message('JGLOBAL_CONFIRM_DELETE')
				->listCheck(true);
		}

if ($canDo->get('core.admin'))
		{
			$toolbar->preferences('com_modules');
		}

$toolbar->help('JHELP_EXTENSIONS_MODULE_MANAGER');
	}
}