Modules/MediaCast/classes/class.ilObjMediaCastGUI.php

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<?php
/*
        +-----------------------------------------------------------------------------+
        | ILIAS open source                                                           |
        +-----------------------------------------------------------------------------+
        | Copyright (c) 1998-2001 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. |
        +-----------------------------------------------------------------------------+
*/

require_once "./classes/class.ilObjectGUI.php";

class ilObjMediaCastGUI extends ilObjectGUI
{
        function ilObjMediaCastGUI($a_data, $a_id, $a_call_by_reference, $a_prepare_output = true)
        {
                global $ilCtrl, $lng;
                
                $this->type = "mcst";
                $this->ilObjectGUI($a_data,$a_id,$a_call_by_reference,$a_prepare_output);
                $lng->loadLanguageModule("mcst");
                $lng->loadLanguageModule("news");
                
                $ilCtrl->saveParameter($this, "item_id");
        }
        
        function &executeCommand()
        {
                global $ilUser;
  
                $next_class = $this->ctrl->getNextClass($this);
                $cmd = $this->ctrl->getCmd();
                $this->prepareOutput();
  
                switch($next_class)
                {
                        case "ilinfoscreengui":
                                $this->checkPermission("visible");
                                $this->infoScreen();    // forwards command
                                break;

                        case 'ilpermissiongui':
                                include_once("./classes/class.ilPermissionGUI.php");
                                $perm_gui =& new ilPermissionGUI($this);
                                $ret =& $this->ctrl->forwardCommand($perm_gui);
                        break;
                
                        default:
                                if(!$cmd)
                                {
                                        $cmd = "infoScreen";
                                }
                                $cmd .= "Object";
                                if ($cmd != "infoScreenObject")
                                {
                                        $this->checkPermission("read");
                                }
                                else
                                {
                                        $this->checkPermission("visible");
                                }
                                $this->$cmd();
        
                        break;
                }
  
                return true;
        }

        function saveObject()
        {
                global $rbacadmin;

                // create and insert forum in objecttree
                $newObj = parent::saveObject();

                // setup rolefolder & default local roles
                //$roles = $newObj->initDefaultRoles();

                // ...finally assign role to creator of object
                //$rbacadmin->assignUser($roles[0], $newObj->getOwner(), "y");

                // put here object specific stuff
                        
                // always send a message
                ilUtil::sendInfo($this->lng->txt("object_added"),true);
                
                ilUtil::redirect("ilias.php?baseClass=ilMediaCastHandlerGUI&ref_id=".$newObj->getRefId()."&cmd=listItems");
        }
        
        
        function listItemsObject()
        {
                global $tpl, $lng, $ilAccess;
                
                $this->checkPermission("read");
                
                $med_items = $this->object->getItemsArray();

                include_once("./Modules/MediaCast/classes/class.ilMediaCastTableGUI.php");
                $table_gui = new ilMediaCastTableGUI($this, "listItems");
                                
                $table_gui->setTitle($lng->txt("mcst_media_cast"));
                $table_gui->setData($med_items);
                
                if ($ilAccess->checkAccess("write", "", $_GET["ref_id"]))
                {
                        $table_gui->addCommandButton("addCastItem", $lng->txt("add"));
                        $table_gui->addMultiCommand("confirmDeletionItems", $lng->txt("delete"));
                        $table_gui->setSelectAllCheckbox("item_id");
                }
                
                include_once("./Services/Block/classes/class.ilBlockSetting.php");
                $public_feed = ilBlockSetting::_lookup("news", "public_feed",
                        0, $this->object->getId());
                        
                // rss icon/link
                if ($public_feed)
                {
                        $news_set = new ilSetting("news");
                        $enable_internal_rss = $news_set->get("enable_rss_for_internal");

                        if ($enable_internal_rss)
                        {
                                $table_gui->addHeaderCommand(
                                                ILIAS_HTTP_PATH."/feed.php?client_id=".rawurlencode(CLIENT_ID)."&".
                                                        "ref_id=".$_GET["ref_id"],
                                                        $lng->txt("news_feed_url"), "_blank",
                                                        ilUtil::getImagePath("rss.gif"));
                        }
                }

                $tpl->setContent($table_gui->getHTML());

        }
        
        function addCastItemObject()
        {
                global $tpl;
                
                $this->checkPermission("write");
                
                $this->initAddCastItemForm();
                $tpl->setContent($this->form_gui->getHTML());
        }

        function editCastItemObject()
        {
                global $tpl;
                
                $this->checkPermission("write");
                $med = $this->getMediaItem($_GET["item_id"]);           
                $this->initAddCastItemForm(strcasecmp($med->getLocationType(),"Reference") == 0? "edit_reference": "edit_local");
                $this->getCastItemValues();
                $tpl->setContent($this->form_gui->getHTML());
        }
        
        function initAddCastItemForm($a_mode = "create")
        {
                global $lng, $ilCtrl;
                
                $this->checkPermission("write");
                
                $lng->loadLanguageModule("mcst");
                
                $news_set = new ilSetting("news");
                $enable_internal_rss = $news_set->get("enable_rss_for_internal");

                include("Services/Form/classes/class.ilPropertyFormGUI.php");
                $this->form_gui = new ilPropertyFormGUI();
                
                // Property Title
                $text_input = new ilTextInputGUI($lng->txt("title"), "title");
                $text_input->setRequired(true);
                $text_input->setMaxLength(200);
                $this->form_gui->addItem($text_input);
                
                // Property Content
                $text_area = new ilTextAreaInputGUI($lng->txt("description"), "description");
                $text_area->setRequired(false);
                $this->form_gui->addItem($text_area);
                
                // Property Visibility
                if ($enable_internal_rss)
                {
                        $radio_group = new ilRadioGroupInputGUI($lng->txt("access_scope"), "visibility");
                        $radio_option = new ilRadioOption($lng->txt("access_users"), "users");
                        $radio_group->addOption($radio_option);
                        $radio_option = new ilRadioOption($lng->txt("access_public"), "public");
                        $radio_group->addOption($radio_option);
                        $radio_group->setInfo($lng->txt("mcst_visibility_info"));
                        $radio_group->setRequired(true);
                        $radio_group->setValue("users");
                        $this->form_gui->addItem($radio_group);
                }
                
                // File
                //if ($a_mode == "edit_local" || $a_mode == "create") 
                {
                        $file = new ilFileInputGUI($lng->txt("file"), "file");          
                        $file->setSuffixes(array("mp3","flv","gif", "png"));
                        $this->form_gui->addItem($file);
                }

                // Property URL
                //if ($a_mode == "edit_reference" || $a_mode == "create") 
                {               
                        $text_input = new ilRegExpInputGUI($lng->txt("url"), "url");
                        $text_input->setPattern("/https?\:\/\/.+/i");
                        $text_input->setInfo($lng->txt("mcst_reference_info"));
                        $this->form_gui->addItem($text_input);
                }
                
                
                
                // Duration
                $dur = new ilDurationInputGUI($lng->txt("mcst_duration"), "duration");
                $dur->setInfo($lng->txt("mcst_duration_info"));
                $dur->setShowDays(false);
                $dur->setShowHours(true);
                $dur->setShowSeconds(true);
                $this->form_gui->addItem($dur);
                
                // save/cancel button
                if ($a_mode == "create")
                {
                        $this->form_gui->addCommandButton("saveCastItem", $lng->txt("save"));
                }
                else
                {
                        $this->form_gui->addCommandButton("updateCastItem", $lng->txt("save"));
                }
                $this->form_gui->addCommandButton("listItems", $lng->txt("cancel"));
                $this->form_gui->setFormAction($ilCtrl->getFormAction($this, "saveCastItem"));
                
                $this->form_gui->setTitle($lng->txt("mcst_add_new_item"));
        }
        
        public function getCastItemValues()
        {
                $values = array();
                $med = $this->getMediaItem($_GET["item_id"]);
                $values["title"] = $this->mcst_item->getTitle();
                $values["description"] = $this->mcst_item->getContent();
                $values["visibility"] = $this->mcst_item->getVisibility();
                if (strcasecmp("Reference", $med->getLocationType()) == 0)
                        $values["url"] = $med->getLocation(); 
                $length = explode(":", $this->mcst_item->getPlaytime());
                $values["duration"] = array("hh" => $length[0], "mm" => $length[1], "ss" => $length[2]);
                
                $this->form_gui->setValuesByArray($values);
        }
        
        function saveCastItemObject()
        {
                global $tpl, $ilCtrl, $ilUser, $lng;
                
                $this->checkPermission("write");
                
                $this->initAddCastItemForm();
                
                if ($_POST["url"] == "" && !$_FILES['file']['tmp_name']) {
                        ilUtil::sendInfo($lng->txt("msg_input_either_file_or_url"));                    
                        $this->form_gui->setValuesByPost();
                        $tpl->setContent($this->form_gui->getHTML());                   
                } 
                else if ($this->form_gui->checkInput())
                {
                        
                        // create dummy object in db (we need an id)
                        include_once("./Services/MediaObjects/classes/class.ilObjMediaObjectGUI.php");
                        $mob = new ilObjMediaObject();

                        $mob->setTitle($this->form_gui->getInput("title"));
                        $mob->setDescription("");
                        $mob->create();

                        $media_item =& new ilMediaItem();
                        $mob->addMediaItem($media_item);
                        $media_item->setPurpose("Standard");

                        if ($this->form_gui->getInput ("url"))
                        {
                                // http 
                                $file = $this->form_gui->getInput ("url");
                                $title = basename ($file);
                                $location = $this->form_gui->getInput ("url");
                                $locationType = "Reference";
                        } else {
                                // lokal
                                // determine and create mob directory, move uploaded file to directory
                                //$mob_dir = ilUtil::getWebspaceDir()."/mobs/mm_".$this->object->getId();
                                $mob->createDirectory();
                                $mob_dir = ilObjMediaObject::_getDirectory($mob->getId());
                
                                $file_name = ilUtil::getASCIIFilename($_FILES['file']['name']);
                                $file_name = str_replace(" ", "_", $file_name);
                                
                                $file = $mob_dir."/".$file_name;
                                $title = $file_name; 
                                $locationType = "LocalFile";
                                $location = $title;
                                ilUtil::moveUploadedFile($_FILES['file']['tmp_name'],
                                        $file_name, $file);                             
                        }
                        
                        // determine duration
                        $duration = $this->form_gui->getInput("duration");
                        if ($duration["hh"] == 0 && $duration["mm"] == 0 && $duration["ss"] == 0)
                        {
                                include_once("./Services/MediaObjects/classes/class.ilMediaAnalyzer.php");
                                $ana = new ilMediaAnalyzer();
                                $ana->setFile($file);
                                $ana->analyzeFile();
                                $dur = $ana->getPlaytimeString();
                                $dur = explode(":", $dur);
                                $duration["mm"] = $dur[0];
                                $duration["ss"] = $dur[1];
                        }
                        $duration = 
                                str_pad($duration["hh"], 2 , "0", STR_PAD_LEFT).":".
                                str_pad($duration["mm"], 2 , "0", STR_PAD_LEFT).":".
                                str_pad($duration["ss"], 2 , "0", STR_PAD_LEFT);
                        
                        
                        // get mime type
                        $format = ilObjMediaObject::getMimeType($file);

                        // set real meta and object data
                        $media_item->setFormat($format);
                        $media_item->setLocation($location);
                        $media_item->setLocationType($locationType);
                        $media_item->setHeight(self::isAudio($format)?0:180);
                        $mob->setTitle($title);
                        $mob->setDescription($format);
                        $media_item->setHAlign("Left");

                        ilUtil::renameExecutables($mob_dir);
                        $mob->update();
                        
                        //
                        // @todo: save usage
                        //
                        
                        $news_set = new ilSetting("news");
                        $enable_internal_rss = $news_set->get("enable_rss_for_internal");
                        
                        // create new media cast item
                        include_once("./Services/News/classes/class.ilNewsItem.php");
                        $mc_item = new ilNewsItem();
                        $mc_item->setMobId($mob->getId());
                        $mc_item->setContentType(NEWS_AUDIO);
                        $mc_item->setContextObjId($this->object->getId());
                        $mc_item->setContextObjType($this->object->getType());
                        $mc_item->setUserId($ilUser->getId());
                        $mc_item->setPlaytime($duration);
                        $mc_item->setTitle($this->form_gui->getInput("title"));
                        $mc_item->setContent($this->form_gui->getInput("description"));
                        $mc_item->setLimitation(false);
                        if ($enable_internal_rss)
                        {
                                $mc_item->setVisibility($this->form_gui->getInput("visibility"));
                        }
                        else
                        {
                                $mc_item->setVisibility("users");
                        }
                        $mc_item->create();
                        
                        $ilCtrl->redirect($this, "listItems");
                }
                else
                {
                        $this->form_gui->setValuesByPost();
                        $tpl->setContent($this->form_gui->getHTML());
                }
        }
        
        function updateCastItemObject()
        {
                global $tpl, $ilCtrl, $ilUser;
                
                $this->checkPermission("write");
                
                $this->initAddCastItemForm("edit");
                
                if ($this->form_gui->checkInput())
                {
                        // create new media cast item
                        include_once("./Services/News/classes/class.ilNewsItem.php");
                        $mc_item = new ilNewsItem($_GET["item_id"]);
                        $mob_id = $mc_item->getMobId();
                        
                        // create dummy object in db (we need an id)
                        include_once("./Services/MediaObjects/classes/class.ilObjMediaObjectGUI.php");
                        $mob = new ilObjMediaObject($mob_id);

                        $mob->setTitle($this->form_gui->getInput("title"));
                        $mob->setDescription("");

                        // determine and create mob directory, move uploaded file to directory
                        //$mob_dir = ilUtil::getWebspaceDir()."/mobs/mm_".$this->object->getId();
                        $mob->createDirectory();
                        $mob_dir = ilObjMediaObject::_getDirectory($mob->getId());

                        $media_item = $mob->getMediaItem("Standard");
                        $file = $mob_dir."/".$media_item->getLocation();
                        if ($_FILES['file']['name'] != "") // && strcasecmp ($media_item->getLocationType(), "LocaleFile") == 0)
                        {
                                $file_name = ilUtil::getASCIIFilename($_FILES['file']['name']);
                                $file_name = str_replace(" ", "_", $file_name);
                                
                                $file = $mob_dir."/".$file_name;
                                ilUtil::moveUploadedFile($_FILES['file']['tmp_name'],
                                        $file_name, $file);
                                // get mime type
                                $format = ilObjMediaObject::getMimeType($file);
                                $location = $file_name;
                                $media_item->setFormat($format);
                                $media_item->setLocation($location);
                                $media_item->setLocationType("LocalFile");
                                $mob->setTitle($file_name);
                                $mob->setDescription($format);
                                $media_item->setHAlign("Left");
                                $media_item->setHeight(self::isAudio($format)?0:180);
                                ilUtil::renameExecutables($mob_dir);
                        } elseif ($this->form_gui->getInput ("url")) // && strcasecmp ($media_item->getLocationType(), "Reference") == 0)
                        {
                                $location = $this->form_gui->getInput ("url");
                                $format = ilObjMediaObject::getMimeType($location);
                                $media_item->setHeight(self::isAudio($format)?0:180);
                                $media_item->setFormat($format);                                
                                $media_item->setLocation($location);
                                $media_item->setLocationType("Reference");
                        }
                        
                        

                        // set real meta and object data
                        $mob->update();

                        // determine duration
                        $duration = $this->form_gui->getInput("duration");
                        if ($duration["hh"] == 0 && $duration["mm"] == 0 && $duration["ss"] == 0)
                        {
                                include_once("./Services/MediaObjects/classes/class.ilMediaAnalyzer.php");
                                $ana = new ilMediaAnalyzer();
                                $ana->setFile($file);
                                $ana->analyzeFile();
                                $dur = $ana->getPlaytimeString();
                                $dur = explode(":", $dur);
                                $duration["mm"] = $dur[0];
                                $duration["ss"] = $dur[1];
                        }
                        $duration = 
                                str_pad($duration["hh"], 2 , "0", STR_PAD_LEFT).":".
                                str_pad($duration["mm"], 2 , "0", STR_PAD_LEFT).":".
                                str_pad($duration["ss"], 2 , "0", STR_PAD_LEFT);
                        
                        
                        //
                        // @todo: save usage
                        //
                        
                        $news_set = new ilSetting("news");
                        $enable_internal_rss = $news_set->get("enable_rss_for_internal");

                        $mc_item->setUserId($ilUser->getId());
                        $mc_item->setPlaytime($duration);
                        $mc_item->setTitle($this->form_gui->getInput("title"));
                        $mc_item->setContent($this->form_gui->getInput("description"));
                        if ($enable_internal_rss)
                        {
                                $mc_item->setVisibility($this->form_gui->getInput("visibility"));
                        }
                        $mc_item->update();

                        $ilCtrl->redirect($this, "listItems");
                }
                else
                {
                        $this->form_gui->setValuesByPost();
                        $tpl->setContent($this->form_gui->getHTML());
                }
        }

        function confirmDeletionItemsObject()
        {
                global $ilCtrl, $lng, $tpl;
                
                $this->checkPermission("write");
                
                if (!is_array($_POST["item_id"]))
                {
                        $this->listItemsObject();
                        return;
                }
                
                include_once("Services/Utilities/classes/class.ilConfirmationGUI.php");
                $c_gui = new ilConfirmationGUI();
                
                // set confirm/cancel commands
                $c_gui->setFormAction($ilCtrl->getFormAction($this, "deleteItems"));
                $c_gui->setHeaderText($lng->txt("info_delete_sure"));
                $c_gui->setCancel($lng->txt("cancel"), "listItems");
                $c_gui->setConfirm($lng->txt("confirm"), "deleteItems");

                // add items to delete
                include_once("./Services/News/classes/class.ilNewsItem.php");
                foreach($_POST["item_id"] as $item_id)
                {
                        $item = new ilNewsItem($item_id);
                        $c_gui->addItem("item_id[]", $item_id, $item->getTitle(),
                                ilUtil::getImagePath("icon_mcst.gif"));
                }
                
                $tpl->setContent($c_gui->getHTML());
        }

        function deleteItemsObject()
        {
                global $ilCtrl;
                
                $this->checkPermission("write");
                
                // delete all selected news items
                foreach($_POST["item_id"] as $item_id)
                {
                        $mc_item = new ilNewsItem($item_id);
                        $mc_item->delete();
                }
                
                $ilCtrl->redirect($this, "listItems");
        }
        
        function downloadItemObject()
        {
                $this->checkPermission("read");
                
                $mc_item = new ilNewsItem($_GET["item_id"]);
                $mob = $mc_item->getMobId();
                include_once("./Services/MediaObjects/classes/class.ilObjMediaObject.php");
                $mob = new ilObjMediaObject($mob);
                $mob_dir = ilObjMediaObject::_getDirectory($mob->getId());
                $m_item = $mob->getMediaItem("Standard");
                $file = $mob_dir."/".$m_item->getLocation();
                ilUtil::deliverFile($file, $m_item->getLocation());
                exit;
        }
        
        function determinePlaytimeObject()
        {
                global $ilCtrl;
                
                $mc_item = new ilNewsItem($_GET["item_id"]);
                $mob = $mc_item->getMobId();
                include_once("./Services/MediaObjects/classes/class.ilObjMediaObject.php");
                $mob = new ilObjMediaObject($mob);
                $mob_dir = ilObjMediaObject::_getDirectory($mob->getId());
                $m_item = $mob->getMediaItem("Standard");
                $file = $mob_dir."/".$m_item->getLocation();
                
                include_once("./Services/MediaObjects/classes/class.ilMediaAnalyzer.php");
                $ana = new ilMediaAnalyzer();
                $ana->setFile($file);
                $ana->analyzeFile();
                $dur = $ana->getPlaytimeString();
                $dur = explode(":", $dur);
                $duration["hh"] = "00";
                $duration["mm"] = $dur[0];
                $duration["ss"] = $dur[1];

                $duration = 
                        str_pad($duration["hh"], 2 , "0", STR_PAD_LEFT).":".
                        str_pad($duration["mm"], 2 , "0", STR_PAD_LEFT).":".
                        str_pad($duration["ss"], 2 , "0", STR_PAD_LEFT);

                $mc_item->setPlaytime($duration);
                $mc_item->update();

                $ilCtrl->redirect($this, "listItems");
        }

        function infoScreenObject()
        {
                $this->checkPermission("visible");
                $this->ctrl->setCmd("showSummary");
                $this->ctrl->setCmdClass("ilinfoscreengui");
                $this->infoScreen();
        }

        function infoScreen()
        {
                global $ilAccess, $ilUser;

                if (!$ilAccess->checkAccess("visible", "", $this->object->getRefId()))
                {
                        $this->ilias->raiseError($this->lng->txt("msg_no_perm_read"),$this->ilias->error_obj->MESSAGE);
                }

                include_once("./Services/InfoScreen/classes/class.ilInfoScreenGUI.php");
                $info = new ilInfoScreenGUI($this);
                
                $info->enablePrivateNotes();
                
                /*
                $info->enableNews();
                if ($ilAccess->checkAccess("write", "", $_GET["ref_id"]))
                {
                        //$info->enableNewsEditing();
                        $info->setBlockProperty("news", "settings", true);
                }*/
                
                // general information
                $this->lng->loadLanguageModule("meta");
                $this->lng->loadLanguageModule("mcst");
                $med_items = $this->object->getItemsArray();
                $info->addSection($this->lng->txt("meta_general"));
                $info->addProperty($this->lng->txt("mcst_nr_items"),
                        (int) count($med_items));
                        
                if (count($med_items) > 0)
                {
                        $cur = current($med_items);
                        $last = $cur["creation_date"];
                }
                else
                {
                        $last = "-";
                }

                $info->addProperty($this->lng->txt("mcst_last_submission"), $last);

                // forward the command
                $this->ctrl->forwardCommand($info);
        }

        function getTabs(&$tabs_gui)
        {
                global $ilCtrl, $ilAccess;
                
                // list items
                if ($ilAccess->checkAccess('read', "", $this->object->getRefId()))
                {
                        $tabs_gui->addTarget("view_content",
                                $this->ctrl->getLinkTarget($this, "listItems"), array("", "listItems"),
                                array(strtolower(get_class($this)), ""));
                }

                // info screen
                if ($ilAccess->checkAccess('visible', "", $this->object->getRefId()))
                {
                        $force_active = ($ilCtrl->getNextClass() == "ilinfoscreengui"
                                || $_GET["cmd"] == "infoScreen")
                                ? true
                                : false;
                        $tabs_gui->addTarget("info_short",
                                $this->ctrl->getLinkTargetByClass(
                                "ilinfoscreengui", "showSummary"),
                                "showSummary",
                                "", "", $force_active);
                }

                // settings
                if ($ilAccess->checkAccess('write', "", $this->object->getRefId()))
                {
                        $tabs_gui->addTarget("settings",
                                $this->ctrl->getLinkTarget($this, "editSettings"), array("editSettings"),
                                array(strtolower(get_class($this)), ""));
                }

                // edit permissions
                if ($ilAccess->checkAccess('edit_permission', "", $this->object->getRefId()))
                {
                        $tabs_gui->addTarget("perm_settings",
                                $this->ctrl->getLinkTargetByClass("ilpermissiongui", "perm"), array("perm","info","owner"), 'ilpermissiongui');
                }
        }

        function editSettingsObject()
        {
                global $tpl;
                
                $this->checkPermission("write");
                
                $this->initSettingsForm();
                $tpl->setContent($this->form_gui->getHtml());
        }
        
        function initSettingsForm()
        {
                global $tpl, $lng, $ilCtrl;
                
                $lng->loadLanguageModule("mcst");
                
                include("Services/Form/classes/class.ilPropertyFormGUI.php");
                $this->form_gui = new ilPropertyFormGUI();
                $this->form_gui->setTitle($lng->txt("mcst_settings"));
                
                // Title
                $tit = new ilTextInputGUI($lng->txt("title"), "title");
                $tit->setValue($this->object->getTitle());
                $tit->setRequired(true);
                $this->form_gui->addItem($tit);

                // description
                $des = new ilTextAreaInputGUI($lng->txt("description"), "description");
                $des->setValue($this->object->getLongDescription());
                $this->form_gui->addItem($des);

                // Online
                $online = new ilCheckboxInputGUI($lng->txt("online"), "online");
                $online->setChecked($this->object->getOnline());
                $this->form_gui->addItem($online);
                
                $news_set = new ilSetting("news");
                $enable_internal_rss = $news_set->get("enable_rss_for_internal");

                // if rss is globally activated...
                if ($enable_internal_rss)
                {
                
                        // Extra Feed
                        include_once("./Services/Block/classes/class.ilBlockSetting.php");
                        $public_feed = ilBlockSetting::_lookup("news", "public_feed",
                                0, $this->object->getId());
                        $ch = new ilCheckboxInputGUI($lng->txt("news_public_feed"),
                                "extra_feed");
                        $ch->setInfo($lng->txt("news_public_feed_info"));
                        $ch->setChecked($public_feed);
                        $this->form_gui->addItem($ch);
                        
                        // Include Files in Pubic Items
                        $incl_files = new ilCheckboxInputGUI($lng->txt("mcst_incl_files_in_rss"), "public_files");
                        $incl_files->setChecked($this->object->getPublicFiles());
                        $incl_files->setInfo($lng->txt("mcst_incl_files_in_rss_info"));
                        $this->form_gui->addItem($incl_files);
                }
                
                // Form action and save button
                $this->form_gui->addCommandButton("saveSettings", $lng->txt("save"));
                $this->form_gui->setFormAction($ilCtrl->getFormAction($this, "saveSettings"));
        }
        
        function saveSettingsObject()
        {
                global $ilCtrl;
                
                $this->checkPermission("write");
                
                $this->initSettingsForm();
                if ($this->form_gui->checkInput())
                {
                        $news_set = new ilSetting("news");
                        $enable_internal_rss = $news_set->get("enable_rss_for_internal");
                        
                        $this->object->setTitle($this->form_gui->getInput("title"));
                        $this->object->setDescription($this->form_gui->getInput("description"));
                        $this->object->setOnline($this->form_gui->getInput("online"));
                        if ($enable_internal_rss)
                        {
                                $this->object->setPublicFiles($this->form_gui->getInput("public_files"));
                        }
                        $this->object->update();
                        
                        if ($enable_internal_rss)
                        {
                                include_once("./Services/Block/classes/class.ilBlockSetting.php");
                                ilBlockSetting::_write("news", "public_feed",
                                        $this->form_gui->getInput("extra_feed"),
                                        0, $this->object->getId());
                        }
                        
                        ilUtil::sendInfo($this->lng->txt("msg_obj_modified"),true);
                        $ilCtrl->redirect($this, "editSettings");
                }
                else
                {
                        $this->form_gui->setValuesByPost();
                        $this->tpl->setContent($this->form_gui->getHTML());
                }
        }

        // add media cast to locator
        function addLocatorItems()
        {
                global $ilLocator;
                
                if (is_object($this->object))
                {
                        $ilLocator->addItem($this->object->getTitle(), $this->ctrl->getLinkTarget($this, "infoScreen"), "", $_GET["ref_id"]);
                }
        }

        function _goto($a_target)
        {
                global $ilAccess, $ilErr, $lng;

                if ($ilAccess->checkAccess("read", "", $a_target))
                {
                        $_GET["cmd"] = "listItems";
                        $_GET["ref_id"] = $a_target;
                        $_GET["baseClass"] = "ilmediacasthandlergui";
                        $_GET["cmdClass"] = "ilobjmediacastgui";
                        include("ilias.php");
                        exit;
                }
                else if ($ilAccess->checkAccess("visible", "", $a_target))
                {
                        $_GET["cmd"] = "infoScreen";
                        $_GET["ref_id"] = $a_target;
                        include("repository.php");
                        exit;
                }
                else if ($ilAccess->checkAccess("read", "", ROOT_FOLDER_ID))
                {
                        $_GET["cmd"] = "frameset";
                        $_GET["target"] = "";
                        $_GET["ref_id"] = ROOT_FOLDER_ID;
                        ilUtil::sendInfo(sprintf($lng->txt("msg_no_perm_read_item"),
                                ilObject::_lookupTitle(ilObject::_lookupObjId($a_target))), true);
                        include("repository.php");
                        exit;
                }

                $ilErr->raiseError($lng->txt("msg_no_perm_read"), $ilErr->FATAL);

        }
        
        protected static function isAudio($extension) {
                return strpos($extension,"audio") !== false;
        }
        
        protected function getMediaItem ($id) {
                include_once("./Services/News/classes/class.ilNewsItem.php");
                $this->mcst_item = new ilNewsItem($id);
                // create dummy object in db (we need an id)
                include_once("./Services/MediaObjects/classes/class.ilObjMediaObjectGUI.php");
                $mob = new ilObjMediaObject($this->mcst_item->getMobId());
                return $mob->getMediaItem("Standard");                                          
        }
}
?>