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<?php |
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/** |
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* @package org.openpsa.widgets |
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* @author CONTENT CONTROL http://www.contentcontrol-berlin.de/ |
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* @copyright CONTENT CONTROL http://www.contentcontrol-berlin.de/ |
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* @license http://www.gnu.org/licenses/gpl.html GNU General Public License |
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*/ |
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/** |
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* fancytree-based tree widget |
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* |
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* @package org.openpsa.widgets |
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*/ |
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class org_openpsa_widgets_tree extends midcom_baseclasses_components_purecode |
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{ |
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/** |
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* The tree's root node, if any |
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* |
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* @var int |
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*/ |
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public $root_node = 0; |
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/** |
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* The object fields to use for link titles |
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* |
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* @var array |
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*/ |
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public $title_fields = ['title']; |
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/** |
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* Callback for rendering object links. It receives the GUID as parameter |
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* |
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* @var callable |
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*/ |
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public $link_callback; |
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/** |
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* The constraints for the children MC |
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* |
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* @var array |
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*/ |
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public $constraints = []; |
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/** |
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* The object's class name |
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* |
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* @var string |
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*/ |
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private $_object_class; |
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/** |
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* The object's parent field |
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* |
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* @var string |
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*/ |
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private $_parent_field; |
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/** |
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* Flag that tracks if JS/CSS files have already been added |
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* |
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* @var boolean |
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*/ |
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private static $_head_elements_added = false; |
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/** |
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* Constructor, adds head elements and initializes some variables |
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* |
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* @param string $parent_field Where to look for children |
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*/ |
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public function __construct(string $classname, string $parent_field) |
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{ |
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parent::__construct(); |
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$this->_object_class = $classname; |
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$this->_parent_field = $parent_field; |
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self::add_head_elements(); |
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} |
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public function render(array $items = []) |
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{ |
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if (empty($items)) { |
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$items = $this->_list_items($this->root_node); |
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if (empty($items)) { |
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return; |
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} |
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} |
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$identifier = 't_' . md5('org_openpsa_widgets_treemenu_' . $this->_object_class); |
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echo '<div class="openpsa-fancytree-container" id="' . $identifier . "\">\n"; |
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$this->_render_items($items); |
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echo "\n</div>\n"; |
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echo <<<JSINIT |
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<script type="text/javascript"> |
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org_openpsa_tree.setup("{$identifier}"); |
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</script> |
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JSINIT; |
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} |
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/** |
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* Internal helper for loading the items recursively |
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* |
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* @param int $id The parent object ID |
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*/ |
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private function _list_items($id) : array |
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{ |
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$data = []; |
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$value_properties = ['id']; |
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$mc = midcom::get()->dbfactory->new_collector($this->_object_class, $this->_parent_field, (int) $id); |
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foreach ($this->constraints as [$field, $operator, $value]) { |
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$mc->add_constraint($field, $operator, $value); |
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} |
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foreach ($this->title_fields as $field) { |
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$value_properties[] = $field; |
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$mc->add_order($field); |
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} |
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foreach ($mc->get_rows($value_properties) as $guid => $values) { |
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$entry = ['guid' => $guid]; |
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foreach ($this->title_fields as $field) { |
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if (!empty($values[$field])) { |
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$entry['title'] = $values[$field]; |
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break; |
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} |
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} |
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if (empty($entry['title'])) { |
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$entry['title'] = $this->_l10n->get('unknown'); |
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} |
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$entry['children'] = $this->_list_items($values['id']); |
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$data[] = $entry; |
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} |
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return $data; |
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} |
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private function _render_items(array $items) |
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{ |
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if (empty($items)) { |
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return; |
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} |
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$prefix = midcom::get()->get_host_prefix(); |
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echo "<ul>\n"; |
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foreach ($items as $item) { |
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if (is_callable($this->link_callback)) { |
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$url = call_user_func($this->link_callback, $item['guid']); |
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} else { |
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$url = $prefix . 'midcom-permalink-' . $item['guid']; |
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} |
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echo '<li id="g_' . $item['guid'] . '"><a href="' . $url . '">' . $item['title'] . "</a>\n"; |
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if (!empty($item['children'])) { |
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$this->_render_items($item['children']); |
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} |
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echo "</li>\n"; |
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} |
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echo "</ul>\n"; |
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} |
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/** |
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* Add necessary head elements |
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*/ |
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18 |
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public static function add_head_elements() |
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{ |
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if (self::$_head_elements_added) { |
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return; |
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} |
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1 |
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$head = midcom::get()->head; |
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$head->enable_jquery_ui(); |
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$head->add_jsfile(MIDCOM_STATIC_URL . '/jQuery/fancytree-2.35.0/jquery.fancytree-all.min.js'); |
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$head->add_stylesheet(MIDCOM_STATIC_URL . "/stock-icons/font-awesome-4.7.0/css/font-awesome.min.css"); |
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$head->add_stylesheet(MIDCOM_STATIC_URL . "/jQuery/fancytree-2.35.0/skin-awesome/ui.fancytree.min.css"); |
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$head->add_stylesheet(MIDCOM_STATIC_URL . "/org.openpsa.widgets/fancytree.custom.css"); |
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$head->add_jsfile(MIDCOM_STATIC_URL . '/org.openpsa.widgets/fancytree.custom.js'); |
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self::$_head_elements_added = true; |
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} |
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} |
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flack /
openpsa
