class.ilObjFileBasedLM.php

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<?php

/* Copyright (c) 1998-2010 ILIAS open source, Extended GPL, see docs/LICENSE */

require_once "./Services/Object/classes/class.ilObject.php";
//require_once "Services/MetaData/classes/class.ilMDLanguageItem.php";

class ilObjFileBasedLM extends ilObject
{
        var $tree;

        function ilObjFileBasedLM($a_id = 0,$a_call_by_reference = true)
        {
                // this also calls read() method! (if $a_id is set)
                $this->type = "htlm";
                $this->ilObject($a_id,$a_call_by_reference);
        }


        function update()
        {
                global $ilDB;
                
                $this->updateMetaData();
                parent::update();

                $ilDB->manipulate("UPDATE file_based_lm SET ".
                        " is_online = ".$ilDB->quote(ilUtil::tf2yn($this->getOnline()), "text").",".
                        " startfile = ".$ilDB->quote($this->getStartFile(), "text")." ".
                        " WHERE id = ".$ilDB->quote($this->getId(), "integer"));

                return true;
        }

        function read()
        {
                global $ilDB;
                
                parent::read();

                $q = "SELECT * FROM file_based_lm WHERE id = ".$ilDB->quote($this->getId(), "integer");
                $lm_set = $ilDB->query($q);
                $lm_rec = $ilDB->fetchAssoc($lm_set);
                $this->setOnline(ilUtil::yn2tf($lm_rec["is_online"]));
                $this->setStartFile((string) $lm_rec["startfile"]);

        }

        function initBibItemObject()
        {
                include_once("./Modules/LearningModule/classes/class.ilBibItem.php");

                $this->bib_obj =& new ilBibItem($this);
                $this->bib_obj->read();

                return true;
        }


        function create()
        {
                global $ilDB;

                parent::create();
                $this->createDataDirectory();

                $ilDB->manipulate("INSERT INTO file_based_lm (id, is_online, startfile) VALUES ".
                        " (".$ilDB->quote($this->getID(), "integer").",".
                        $ilDB->quote("n", "text").",".
                        $ilDB->quote($this->getStartfile(), "text").")");

                $this->createMetaData();
        }

        function getDataDirectory($mode = "filesystem")
        {
                $lm_data_dir = ilUtil::getWebspaceDir($mode)."/lm_data";
                $lm_dir = $lm_data_dir."/lm_".$this->getId();

                return $lm_dir;
        }

        function createDataDirectory()
        {
                ilUtil::makeDir($this->getDataDirectory());
        }

        function getStartFile()
        {
                return $this->start_file;
        }

        function setStartFile($a_file)
        {
                $this->start_file = $a_file;
        }

        function setOnline($a_online)
        {
                $this->online = $a_online;
        }

        function getOnline()
        {
                return $this->online;
        }

        function _lookupOnline($a_id)
        {
                global $ilDB;
                
                $q = "SELECT * FROM file_based_lm WHERE id = ".$ilDB->quote($a_id, "integer");
                $lm_set = $ilDB->query($q);
                $lm_rec = $ilDB->fetchAssoc($lm_set);

                return ilUtil::yn2tf($lm_rec["is_online"]);
        }

        function getDiskUsage()
        {
            require_once("./Modules/HTMLLearningModule/classes/class.ilObjFileBasedLMAccess.php");
                return ilObjFileBasedLMAccess::_lookupDiskUsage($this->id);
        }



        function delete()
        {
                global $ilDB;

                // always call parent delete function first!!
                if (!parent::delete())
                {
                        return false;
                }

                // delete meta data of content object
/*
                $nested = new ilNestedSetXML();
                $nested->init($this->getId(), $this->getType());
                $nested->deleteAllDBData();
*/

                // Delete meta data
                $this->deleteMetaData();

                // delete bibliographical items of object
                include_once("./Services/Xml/classes/class.ilNestedSetXML.php");
                $nested = new ilNestedSetXML();
                $nested->init($this->getId(), "bib");
                $nested->deleteAllDBData();

                // delete file_based_lm record
                $ilDB->manipulate("DELETE FROM file_based_lm WHERE id = ".
                        $ilDB->quote($this->getID(), "integer"));

                // delete data directory
                ilUtil::delDir($this->getDataDirectory());

                return true;
        }

        function initDefaultRoles()
        {
                global $rbacadmin;

                // create a local role folder
                //$rfoldObj = $this->createRoleFolder("Local roles","Role Folder of forum obj_no.".$this->getId());

                // create moderator role and assign role to rolefolder...
                //$roleObj = $rfoldObj->createRole("Moderator","Moderator of forum obj_no.".$this->getId());
                //$roles[] = $roleObj->getId();

                //unset($rfoldObj);
                //unset($roleObj);

                return $roles ? $roles : array();
        }

        function notify($a_event,$a_ref_id,$a_parent_non_rbac_id,$a_node_id,$a_params = 0)
        {
                global $tree;

                switch ($a_event)
                {
                        case "link":

                                //var_dump("<pre>",$a_params,"</pre>");
                                //echo "Module name ".$this->getRefId()." triggered by link event. Objects linked into target object ref_id: ".$a_ref_id;
                                //exit;
                                break;

                        case "cut":

                                //echo "Module name ".$this->getRefId()." triggered by cut event. Objects are removed from target object ref_id: ".$a_ref_id;
                                //exit;
                                break;

                        case "copy":

                                //var_dump("<pre>",$a_params,"</pre>");
                                //echo "Module name ".$this->getRefId()." triggered by copy event. Objects are copied into target object ref_id: ".$a_ref_id;
                                //exit;
                                break;

                        case "paste":

                                //echo "Module name ".$this->getRefId()." triggered by paste (cut) event. Objects are pasted into target object ref_id: ".$a_ref_id;
                                //exit;
                                break;

                        case "new":

                                //echo "Module name ".$this->getRefId()." triggered by paste (new) event. Objects are applied to target object ref_id: ".$a_ref_id;
                                //exit;
                                break;
                }

                // At the beginning of the recursive process it avoids second call of the notify function with the same parameter
                if ($a_node_id==$_GET["ref_id"])
                {
                        $parent_obj =& $this->ilias->obj_factory->getInstanceByRefId($a_node_id);
                        $parent_type = $parent_obj->getType();
                        if($parent_type == $this->getType())
                        {
                                $a_node_id = (int) $tree->getParentId($a_node_id);
                        }
                }

                parent::notify($a_event,$a_ref_id,$a_parent_non_rbac_id,$a_node_id,$a_params);
        }

        function populateByDirectoy($a_dir, $a_filename = "")
        {
                preg_match("/.*htlm_([0-9]*)\.zip/", $a_filename, $match);
                if (is_dir($a_dir."/htlm_".$match[1]))
                {
                        $a_dir = $a_dir."/htlm_".$match[1];
                }
                ilUtil::rCopy($a_dir, $this->getDataDirectory());
                ilUtil::renameExecutables($this->getDataDirectory());
        }
        
        public function cloneObject($a_target_id,$a_copy_id = 0)
        {
                global $ilDB, $ilUser, $ilias;

                $new_obj = parent::cloneObject($a_target_id,$a_copy_id);
                $this->cloneMetaData($new_obj);
                
                $new_obj->setTitle($this->getTitle());
                $new_obj->setDescription($this->getDescription());

                // copy content
                $new_obj->populateByDirectoy($this->getDataDirectory());

                $new_obj->setStartFile($this->getStartFile());
                $new_obj->update();

                return $new_obj;
        }

}
?>