class.ilPDNewsGUI.php

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<?php

/* Copyright (c) 1998-2009 ILIAS open source, Extended GPL, see docs/LICENSE */

class ilPDNewsGUI
{

        function ilPDNewsGUI()
        {
                global $tpl, $lng, $ilCtrl, $ilHelp;

                $ilHelp->setScreenIdComponent("news");
                
                // initiate variables
                $this->tpl =& $tpl;
                $this->lng =& $lng;
                $this->ctrl =& $ilCtrl;
                
                $lng->loadLanguageModule("news");
                
                $this->ctrl->saveParameter($this, "news_ref_id");
        }

        function &executeCommand()
        {
                $next_class = $this->ctrl->getNextClass();

                switch($next_class)
                {
                                
                        default:
                                $cmd = $this->ctrl->getCmd("view");
                                $this->displayHeader();
                                $this->$cmd();
                                break;
                }
                $this->tpl->show(true);
                return true;
        }

        function displayHeader()
        {
                $this->tpl->setTitle($this->lng->txt("news"));
                
                // display infopanel if something happened
                ilUtil::infoPanel();
        }

        /*
        * display notes
        */
        function view()
        {
                global $ilUser, $lng, $tpl, $ilCtrl;

                $ref_ids = array();
                $obj_ids = array();
                $pd_items = $ilUser->getDesktopItems();
                foreach($pd_items as $item)
                {
                        $ref_ids[] = $item["ref_id"];
                        $obj_ids[] = $item["obj_id"];
                }
                
                $sel_ref_id = ($_GET["news_ref_id"] > 0)
                        ? $_GET["news_ref_id"]
                        : $ilUser->getPref("news_sel_ref_id");
                
                include_once("./Services/News/classes/class.ilNewsItem.php");
                $per = ($_SESSION["news_pd_news_per"] != "")
                        ? $_SESSION["news_pd_news_per"]
                        : ilNewsItem::_lookupUserPDPeriod($ilUser->getId());
                $news_obj_ids = ilNewsItem::filterObjIdsPerNews($obj_ids, $per);
                
                // related objects (contexts) of news
                $contexts[0] = $lng->txt("news_all_items");
                
                $conts = array();
                $sel_has_news = false;
                foreach ($ref_ids as $ref_id)
                {
                        $obj_id = ilObject::_lookupObjId($ref_id);
                        $title = ilObject::_lookupTitle($obj_id);
                        
                        $conts[$ref_id] = $title;
                        if ($sel_ref_id == $ref_id)
                        {
                                $sel_has_news = true;
                        }
                }
                
                $cnt = array();
                $nitem = new ilNewsItem();
                $news_items = $nitem->_getNewsItemsOfUser($ilUser->getId(), false,
                        true, $per, $cnt);

                // reset selected news ref id, if no news are given for id
                if (!$sel_has_news)
                {
                        $sel_ref_id = "";
                }
                asort($conts);
                foreach($conts as $ref_id => $title)
                {
                        $contexts[$ref_id] = $title." (".(int) $cnt[$ref_id].")";
                }
                
                
                if ($sel_ref_id > 0)
                {
                        $obj_id = ilObject::_lookupObjId($sel_ref_id);
                        $obj_type = ilObject::_lookupType($obj_id);
                        $nitem->setContextObjId($obj_id);
                        $nitem->setContextObjType($obj_type);
                        $news_items = $nitem->getNewsForRefId($sel_ref_id, false,
                                false, $per, true);
                }
                                
                include_once("./Services/News/classes/class.ilPDNewsTableGUI.php");
                $pd_news_table = new ilPDNewsTableGUI($this, "view", $contexts, $sel_ref_id);
                $pd_news_table->setData($news_items);
                $pd_news_table->setNoEntriesText($lng->txt("news_no_news_items"));
                
                $tpl->setContent($pd_news_table->getHTML());
        }
        
        function applyFilter()
        {
                global $ilUser;
                
                $this->ctrl->setParameter($this, "news_ref_id", $_POST["news_ref_id"]);
                $ilUser->writePref("news_sel_ref_id", $_POST["news_ref_id"]);
                if ($_POST["news_per"] > 0)
                {
                        $_SESSION["news_pd_news_per"] = $_POST["news_per"];
                }
                $this->ctrl->redirect($this, "view");
        }

        function resetFilter()
        {
                global $ilUser;
                $this->ctrl->setParameter($this, "news_ref_id", 0);
                $ilUser->writePref("news_sel_ref_id", 0);
                $_SESSION["news_pd_news_per"] = "";
                $this->ctrl->redirect($this, "view");
        }

}
?>