class.ilRepositoryObjectPlugin.php

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<?php

include_once("./Services/Component/classes/class.ilPlugin.php");
 
abstract class ilRepositoryObjectPlugin extends ilPlugin
{
        final function getComponentType()
        {
                        return IL_COMP_SERVICE;
        }
        
        final function getComponentName()
        {
                        return "Repository";
        }

        final function getSlot()
        {
                        return "RepositoryObject";
        }

        final function getSlotId()
        {
                        return "robj";
        }

        protected final function slotInit()
        {
                        // nothing to do here
        }
        
        static function _getIcon($a_type, $a_size)
        {
                /*
                switch($a_size)
                {
                        case "small": $suff = ""; break;
                        case "tiny": $suff = "_s"; break;
                        default: $suff = "_b"; break;
                }                
                */
                return ilPlugin::_getImagePath(IL_COMP_SERVICE, "Repository", "robj",
                        ilPlugin::lookupNameForId(IL_COMP_SERVICE, "Repository", "robj",$a_type),
                        "icon_".$a_type/*.$suff*/.".svg");
        }
        
        function _getName($a_id)
        {
                $name = ilPlugin::lookupNameForId(IL_COMP_SERVICE, "Repository", "robj",$a_id);
                if ($name != "")
                {
                        return $name;
                }
        }
        
        protected function beforeActivation()
        {
                global $lng, $ilDB;
                
                // before activating, we ensure, that the type exists in the ILIAS
                // object database and that all permissions exist
                $type = $this->getId();
                
                if (substr($type, 0, 1) != "x")
                {
                        throw new ilPluginException("Object plugin type must start with an x. Current type is ".$type.".");
                }
                
                // check whether type exists in object data, if not, create the type
                $set = $ilDB->query("SELECT * FROM object_data ".
                        " WHERE type = ".$ilDB->quote("typ", "text").
                        " AND title = ".$ilDB->quote($type, "text")
                        );
                if ($rec = $ilDB->fetchAssoc($set))
                {
                        $t_id = $rec["obj_id"];
                }
                else
                {
                        $t_id = $ilDB->nextId("object_data");
                        $ilDB->manipulate("INSERT INTO object_data ".
                                "(obj_id, type, title, description, owner, create_date, last_update) VALUES (".
                                $ilDB->quote($t_id, "integer").",".
                                $ilDB->quote("typ", "text").",".
                                $ilDB->quote($type, "text").",".
                                $ilDB->quote("Plugin ".$this->getPluginName(), "text").",".
                                $ilDB->quote(-1, "integer").",".
                                $ilDB->quote(ilUtil::now(), "timestamp").",".
                                $ilDB->quote(ilUtil::now(), "timestamp").
                                ")");
                }

                // add rbac operations
                // 1: edit_permissions, 2: visible, 3: read, 4:write, 6:delete
                $ops = array(1, 2, 3, 4, 6);
                foreach ($ops as $op)
                {
                        // check whether type exists in object data, if not, create the type
                        $set = $ilDB->query("SELECT * FROM rbac_ta ".
                                " WHERE typ_id = ".$ilDB->quote($t_id, "integer").
                                " AND ops_id = ".$ilDB->quote($op, "integer")
                                );
                        if (!$ilDB->fetchAssoc($set))
                        {
                                $ilDB->manipulate("INSERT INTO rbac_ta ".
                                        "(typ_id, ops_id) VALUES (".
                                        $ilDB->quote($t_id, "integer").",".
                                        $ilDB->quote($op, "integer").
                                        ")");
                        }
                }
                
                // now add creation permission, if not existing
                $set = $ilDB->query("SELECT * FROM rbac_operations ".
                        " WHERE class = ".$ilDB->quote("create", "text").
                        " AND operation = ".$ilDB->quote("create_".$type, "text")
                        );
                if ($rec = $ilDB->fetchAssoc($set))
                {
                        $create_ops_id = $rec["ops_id"];
                }
                else
                {
                        $create_ops_id = $ilDB->nextId(rbac_operations);
                        $ilDB->manipulate("INSERT INTO rbac_operations ".
                                "(ops_id, operation, description, class) VALUES (".
                                $ilDB->quote($create_ops_id, "integer").",".
                                $ilDB->quote("create_".$type, "text").",".
                                $ilDB->quote("create ".$type, "text").",".
                                $ilDB->quote("create", "text").
                                ")");
                }
                
                // assign creation operation to root, cat, crs, grp and fold
                $par_types = array("root", "cat", "crs", "grp", "fold");
                foreach ($par_types as $par_type)
                {
                        $set = $ilDB->query("SELECT obj_id FROM object_data ".
                                " WHERE type = ".$ilDB->quote("typ", "text").
                                " AND title = ".$ilDB->quote($par_type, "text")
                                );
                        if ($rec = $ilDB->fetchAssoc($set))
                        {
                                if ($rec["obj_id"] > 0)
                                {
                                        $set = $ilDB->query("SELECT * FROM rbac_ta ".
                                                " WHERE typ_id = ".$ilDB->quote($rec["obj_id"], "integer").
                                                " AND ops_id = ".$ilDB->quote($create_ops_id, "integer")
                                                );
                                        if (!$ilDB->fetchAssoc($set))
                                        {
                                                $ilDB->manipulate("INSERT INTO rbac_ta ".
                                                        "(typ_id, ops_id) VALUES (".
                                                        $ilDB->quote($rec["obj_id"], "integer").",".
                                                        $ilDB->quote($create_ops_id, "integer").
                                                        ")");
                                        }
                                }
                        }
                }
                
                return true;
        }
        
        protected function beforeUninstallCustom()
        {
                // plugin-specific
                // false would indicate that anything went wrong
                return true; 
        }
        
        abstract protected function uninstallCustom();
        
        final protected function beforeUninstall()
        {               
                if($this->beforeUninstallCustom())
                {                                                                                       
                        include_once "Services/Repository/classes/class.ilRepUtil.php";
                        $rep_util = new ilRepUtil();
                        $rep_util->deleteObjectType($this->getId());
                        
                        // custom database tables may be needed by plugin repository object
                        $this->uninstallCustom();

                        return true;
                }
                return false;
        }
}
?>