Group::showItems PHP Method

    function showItems($tech)
    {
        global $DB, $CFG_GLPI;
        $rand = mt_rand();
        $ID = $this->fields['id'];
        if ($tech) {
            $types = $CFG_GLPI['linkgroup_tech_types'];
            $field = 'groups_id_tech';
            $title = __('Managed items');
        } else {
            $types = $CFG_GLPI['linkgroup_types'];
            $field = 'groups_id';
            $title = __('Used items');
        }
        $tree = Session::getSavedOption(__CLASS__, 'tree', 0);
        $user = Session::getSavedOption(__CLASS__, 'user', 0);
        $type = Session::getSavedOption(__CLASS__, 'onlytype', '');
        if (!in_array($type, $types)) {
            $type = '';
        }
        echo "<div class='spaced'>";
        // Mini Search engine
        echo "<table class='tab_cadre_fixe'>";
        echo "<tr class='tab_bg_1'><th colspan='3'>{$title}</tr>";
        echo "<tr class='tab_bg_1'><td class='center'>";
        echo __('Type') . "&nbsp;";
        Dropdown::showItemType($types, array('value' => $type, 'name' => 'onlytype', 'plural' => true, 'on_change' => 'reloadTab("start=0&onlytype="+this.value)', 'checkright' => true));
        if ($this->haveChildren()) {
            echo "</td><td class='center'>" . __('Child groups') . "&nbsp;";
            Dropdown::showYesNo('tree', $tree, -1, array('on_change' => 'reloadTab("start=0&tree="+this.value)'));
        } else {
            $tree = 0;
        }
        if ($this->getField('is_usergroup')) {
            echo "</td><td class='center'>" . User::getTypeName(Session::getPluralNumber()) . "&nbsp;";
            Dropdown::showYesNo('user', $user, -1, array('on_change' => 'reloadTab("start=0&user="+this.value)'));
        } else {
            $user = 0;
        }
        echo "</td></tr></table>";
        $datas = array();
        if ($type) {
            $types = array($type);
        }
        $start = isset($_GET['start']) ? intval($_GET['start']) : 0;
        $nb = $this->getDataItems($types, $field, $tree, $user, $start, $datas);
        $nbcan = 0;
        if ($nb) {
            Html::printAjaxPager('', $start, $nb);
            Html::openMassiveActionsForm('mass' . __CLASS__ . $rand);
            echo Html::hidden('field', array('value' => $field, 'data-glpicore-ma-tags' => 'common'));
            $massiveactionparams = array('num_displayed' => $nb, 'check_itemtype' => 'Group', 'check_items_id' => $ID, 'container' => 'mass' . __CLASS__ . $rand, 'extraparams' => array('is_tech' => $tech, 'massive_action_fields' => array('field')), 'specific_actions' => array(__CLASS__ . MassiveAction::CLASS_ACTION_SEPARATOR . 'changegroup' => __('Move')));
            Html::showMassiveActions($massiveactionparams);
            echo "<table class='tab_cadre_fixehov'>";
            $header_begin = "<tr><th width='10'>";
            $header_top = Html::getCheckAllAsCheckbox('mass' . __CLASS__ . $rand);
            $header_bottom = Html::getCheckAllAsCheckbox('mass' . __CLASS__ . $rand);
            $header_end = '</th>';
            $header_end .= "<th>" . __('Type') . "</th><th>" . __('Name') . "</th><th>" . __('Entity') . "</th>";
            if ($tree || $user) {
                $header_end .= "<th>" . sprintf(__('%1$s / %2$s'), self::getTypeName(1), User::getTypeName(1)) . "</th>";
            }
            $header_end .= "</tr>";
            echo $header_begin . $header_top . $header_end;
            $tuser = new User();
            $group = new Group();
            foreach ($datas as $data) {
                if (!($item = getItemForItemtype($data['itemtype']))) {
                    continue;
                }
                echo "<tr class='tab_bg_1'><td>";
                if ($item->canEdit($data['items_id'])) {
                    Html::showMassiveActionCheckBox($data['itemtype'], $data['items_id']);
                }
                echo "</td><td>" . $item->getTypeName(1);
                echo "</td><td>" . $item->getLink(array('comments' => true));
                echo "</td><td>" . Dropdown::getDropdownName("glpi_entities", $item->getEntityID());
                if ($tree || $user) {
                    echo "</td><td>";
                    if ($grp = $item->getField($field)) {
                        if ($group->getFromDB($grp)) {
                            echo $group->getLink(array('comments' => true));
                        }
                    } else {
                        if ($usr = $item->getField(str_replace('groups', 'users', $field))) {
                            if ($tuser->getFromDB($usr)) {
                                echo $tuser->getLink(array('comments' => true));
                            }
                        }
                    }
                }
                echo "</td></tr>";
            }
            echo $header_begin . $header_bottom . $header_end;
            echo "</table>";
        } else {
            echo "<p class='center b'>" . __('No item found') . "</p>";
        }
        if ($nb) {
            $massiveactionparams['ontop'] = false;
            Html::showMassiveActions($massiveactionparams);
        }
        Html::closeForm();
        if ($nb) {
            Html::printAjaxPager('', $start, $nb);
        }
        echo "</div>";
    }