Services/News/classes/class.ilPDNewsGUI.php

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<?php

/*
        +-----------------------------------------------------------------------------+
        | ILIAS open source                                                           |
        +-----------------------------------------------------------------------------+
        | Copyright (c) 1998-2007 ILIAS open source, University of Cologne            |
        |                                                                             |
        | This program is free software; you can redistribute it and/or               |
        | modify it under the terms of the GNU General Public License                 |
        | as published by the Free Software Foundation; either version 2              |
        | of the License, or (at your option) any later version.                      |
        |                                                                             |
        | This program is distributed in the hope that it will be useful,             |
        | but WITHOUT ANY WARRANTY; without even the implied warranty of              |
        | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the               |
        | GNU General Public License for more details.                                |
        |                                                                             |
        | You should have received a copy of the GNU General Public License           |
        | along with this program; if not, write to the Free Software                 |
        | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA. |
        +-----------------------------------------------------------------------------+
*/

class ilPDNewsGUI
{

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

                // 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->setTitleIcon(ilUtil::getImagePath("icon_pd_b.gif"),
                        $this->lng->txt("personal_desktop"));
                $this->tpl->setTitle($this->lng->txt("personal_desktop"));
                
                // catch feedback message
                ilUtil::sendInfo();
                // display infopanel if something happened
                ilUtil::infoPanel();
        }

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

                $news_tpl = new ilTemplate("tpl.pd_news.html", true, true, "Services/News");

                include_once("Services/News/classes/class.ilNewsSubscription.php");
                include_once("Services/News/classes/class.ilNewsItem.php");
                
                // period
                $per = ($_SESSION["news_pd_news_per"] != "")
                        ? $_SESSION["news_pd_news_per"]
                        : ilNewsItem::_lookupUserPDPeriod($ilUser->getId());
                $news_set = new ilSetting("news");
                $allow_shorter_periods = $news_set->get("allow_shorter_periods");
                $allow_longer_periods = $news_set->get("allow_longer_periods");
                $default_per = ilNewsItem::_lookupDefaultPDPeriod();

                $per_opts = array(
                        2 => sprintf($lng->txt("news_period_x_days"), 2),
                        3 => sprintf($lng->txt("news_period_x_days"), 3),
                        5 => sprintf($lng->txt("news_period_x_days"), 5),
                        7 => $lng->txt("news_period_1_week"),
                        14 => sprintf($lng->txt("news_period_x_weeks"), 2),
                        30 => $lng->txt("news_period_1_month"),
                        60 => sprintf($lng->txt("news_period_x_months"), 2),
                        120 => sprintf($lng->txt("news_period_x_months"), 4),
                        180 => sprintf($lng->txt("news_period_x_months"), 6),
                        366 =>  $lng->txt("news_period_1_year"));
                        
                $unset = array();
                foreach($per_opts as $k => $opt)
                {
                        if (!$allow_shorter_periods && ($k < $default_per)) $unset[$k] = $k;
                        if (!$allow_longer_periods && ($k > $default_per)) $unset[$k] = $k;
                }
                foreach($unset as $k)
                {
                        unset($per_opts[$k]);
                }
                foreach($per_opts as $k => $v)
                {
                        $news_tpl->setCurrentBlock("per_option");
                        $news_tpl->setVariable("VAL_PER", $k);
                        $news_tpl->setVariable("TXT_PER", $v);
                        if ($k == $per)
                        {
                                $news_tpl->setVariable("SEL_PER", ' selected="selected" ');
                        }
                        $news_tpl->parseCurrentBlock();
                }
                
                $ref_ids = array();
                $obj_ids = array();
                //if ($ilUser->prefs["pd_items_news"] != "n")
                //{
                        $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");
                
                $news_obj_ids = ilNewsItem::filterObjIdsPerNews($obj_ids, $per);
                
                // related objects (contexts) of news
                $news_tpl->setCurrentBlock("related_option");
                $news_tpl->setVariable("VAL_RELATED", "0");
                $news_tpl->setVariable("TXT_RELATED", $lng->txt("news_all_items"));
                $news_tpl->parseCurrentBlock();
                
                $conts = array();
                $sel_has_news = false;
                foreach ($ref_ids as $ref_id)
                {
                        $obj_id = ilObject::_lookupObjId($ref_id);
                        $title = ilObject::_lookupTitle($obj_id);
                        
                        //if (in_array($obj_id, $news_obj_ids)) // this does not work, since news can come
                        //{                                                                             // from "lower" objects in category
                                $conts[$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)
                {
                        $news_tpl->setCurrentBlock("related_option");
                        $news_tpl->setVariable("VAL_RELATED", $ref_id);
                        $news_tpl->setVariable("TXT_RELATED", $title." (".(int) $cnt[$ref_id].")");
                        if ($sel_ref_id == $ref_id)
                        {
                                $news_tpl->setVariable("SEL", ' selected="selected" ');
                        }
                        $news_tpl->parseCurrentBlock();
                }
                
                $news_tpl->setCurrentBlock("related_selection");
                $news_tpl->setVariable("FORMACTION", $ilCtrl->getFormAction($this));
                $news_tpl->setVariable("TXT_RELATED_TO", $lng->txt("news_related_to"));
                $news_tpl->setVariable("TXT_CHANGE", $lng->txt("change"));
                $news_tpl->parseCurrentBlock();
                
                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");
                $pd_news_table->setData($news_items);

                if (count($news_items) > 0)
                {
                        $news_tpl->setVariable("NEWS", $pd_news_table->getHTML());
                }
                else
                {
                        $news_tpl->setCurrentBlock("no_news");
                        $news_tpl->setVariable("NO_NEWS", $lng->txt("news_no_news_items"));
                        $news_tpl->parseCurrentBlock();
                }

                $tpl->setContent($news_tpl->get());
        }
        
        function changeRelatedObject()
        {
                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");
        }

}
?>