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<?php /** * Joomla! Content Management System * * @copyright (C) 2013 Open Source Matters, Inc. <https://www.joomla.org> * @license GNU General Public License version 2 or later; see LICENSE.txt */ namespace Joomla\CMS\Form\Field; defined('JPATH_PLATFORM') or die; use Joomla\CMS\Component\ComponentHelper; use Joomla\CMS\Factory; use Joomla\CMS\Form\FormHelper; use Joomla\CMS\Helper\TagsHelper; use Joomla\CMS\Language\Multilanguage; use Joomla\Utilities\ArrayHelper; FormHelper::loadFieldClass('list'); /** * List of Tags field. * * @since 3.1 */ class TagField extends \JFormFieldList { /** * A flexible tag list that respects access controls * * @var string * @since 3.1 */ public $type = 'Tag'; /** * Flag to work with nested tag field * * @var boolean * @since 3.1 */ public $isNested = null; /** * com_tags parameters * * @var \Joomla\Registry\Registry * @since 3.1 */ protected $comParams = null; /** * Constructor * * @since 3.1 */ public function __construct() { parent::__construct(); // Load com_tags config $this->comParams = ComponentHelper::getParams('com_tags'); } /** * Method to get the field input for a tag field. * * @return string The field input. * * @since 3.1 */ protected function getInput() { // AJAX mode requires ajax-chosen if (!$this->isNested()) { // Get the field id $id = isset($this->element['id']) ? $this->element['id'] : null; $cssId = '#' . $this->getId($id, $this->element['name']); // Load the ajax-chosen customised field \JHtml::_('tag.ajaxfield', $cssId, $this->allowCustom()); } if (!is_array($this->value) && !empty($this->value)) { if ($this->value instanceof TagsHelper) { if (empty($this->value->tags)) { $this->value = array(); } else { $this->value = $this->value->tags; } } // String in format 2,5,4 if (is_string($this->value)) { $this->value = explode(',', $this->value); } } return parent::getInput(); } /** * Method to get a list of tags * * @return array The field option objects. * * @since 3.1 */ protected function getOptions() { $published = (string) $this->element['published'] ?: array(0, 1); $app = Factory::getApplication(); $tag = $app->getLanguage()->getTag(); $db = Factory::getDbo(); $query = $db->getQuery(true) ->select('a.id AS value, a.path, a.title AS text, a.level, a.published, a.lft') ->from($db->qn('#__tags') . ' AS a'); // Limit Options in multilanguage if ($app->isClient('site') && Multilanguage::isEnabled()) { $lang = ComponentHelper::getParams('com_tags')->get('tag_list_language_filter'); if ($lang == 'current_language') { $query->where('a.language in (' . $db->quote($tag) . ',' . $db->quote('*') . ')'); } } // Filter language elseif (!empty($this->element['language'])) { if (strpos($this->element['language'], ',') !== false) { $language = implode(',', $db->quote(explode(',', $this->element['language']))); } else { $language = $db->quote($this->element['language']); } $query->where($db->quoteName('a.language') . ' IN (' . $language . ')'); } $query->where($db->qn('a.lft') . ' > 0'); // Filter on the published state if (is_numeric($published)) { $query->where('a.published = ' . (int) $published); } elseif (is_array($published)) { $published = ArrayHelper::toInteger($published); $query->where('a.published IN (' . implode(',', $published) . ')'); } $query->order('a.lft ASC'); // Get the options. $db->setQuery($query); try { $options = $db->loadObjectList(); } catch (\RuntimeException $e) { return array(); } // Block the possibility to set a tag as it own parent if ($this->form->getName() === 'com_tags.tag') { $id = (int) $this->form->getValue('id', 0); foreach ($options as $option) { if ($option->value == $id) { $option->disable = true; } } } // Merge any additional options in the XML definition. $options = array_merge(parent::getOptions(), $options); // Prepare nested data if ($this->isNested()) { $this->prepareOptionsNested($options); } else { $options = TagsHelper::convertPathsToNames($options); } return $options; } /** * Add "-" before nested tags, depending on level * * @param array &$options Array of tags * * @return array The field option objects. * * @since 3.1 */ protected function prepareOptionsNested(&$options) { if ($options) { foreach ($options as &$option) { $repeat = (isset($option->level) && $option->level - 1 >= 0) ? $option->level - 1 : 0; $option->text = str_repeat('- ', $repeat) . $option->text; } } return $options; } /** * Determine if the field has to be tagnested * * @return boolean * * @since 3.1 */ public function isNested() { if ($this->isNested === null) { // If mode="nested" || ( mode not set & config = nested ) if (isset($this->element['mode']) && (string) $this->element['mode'] === 'nested' || !isset($this->element['mode']) && $this->comParams->get('tag_field_ajax_mode', 1) == 0) { $this->isNested = true; } } return $this->isNested; } /** * Determines if the field allows or denies custom values * * @return boolean */ public function allowCustom() { if (isset($this->element['custom']) && (string) $this->element['custom'] === 'deny') { return false; } return true; } }
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