class.ilSCORM2004SeqTemplate.php

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<?php

/* Copyright (c) 1998-2011 ILIAS open source, Extended GPL, see docs/LICENSE */

require_once("./Modules/Scorm2004/classes/seq_editor/class.ilSCORM2004Item.php");
require_once("./Modules/Scorm2004/classes/class.ilSCORM2004Chapter.php");
require_once("./Modules/Scorm2004/classes/class.ilSCORM2004SeqChapter.php");
require_once("./Modules/Scorm2004/classes/class.ilSCORM2004Sco.php");

class ilSCORM2004SeqTemplate extends ilSCORM2004SeqNode
{

        const SEQ_TEMPLATE_DIR = './Modules/Scorm2004/templates/editor/seq_templates';
        const SEQ_TEMPLATE_XSL = './Modules/Scorm2004/templates/editor/seq_templates/xsl/normalize_seqtemplate.xsl';
        const SEQ_TEMPLATE_XSD = './Modules/Scorm2004/templates/editor/seq_templates/xsd/seq_template.xsd';
        
        
        private $template;
        private $template_file;
        private $normalized_template;
        private $tree_node;
        private $diagnostic = array ();
        private $parentchapter = true;
        private $importId;
                
        //db fields
        private $id = null;
        private $seqNodeId = null;
        private $sahs_sc13_treeId = null;
        private $importid;
        
        public function ilSCORM2004SeqTemplate($a_identifier)
        {
                
                parent::ilSCORM2004SeqNode();
                $this->setNodeName("seqtemplate");
                
                if ($a_identifier==null) {return;}
                $t_file = self::getFileNameForIdentifier($a_identifier);
                                
                $this->template = new DOMDocument;
                $this->template->async = false;
                

                //look for template in lang_dir, fallback to en
                $test = self::SEQ_TEMPLATE_DIR."/".$_SESSION["lang"]."/".$t_file;
                if (file_exists($test))
                {
                        $this->template_file = $test;
                } else {
                        $this->template_file = self::SEQ_TEMPLATE_DIR."/en/".$t_file;
                }       
                if (!@$this->template->load($this->template_file))
                {
                        $this->diagnostic[] = 'Template not wellformed';
                        $test = $this->template->saveXML();
                        return false;
                } else {
                        return true;
                }
        }
        
        
        public function getMetadataProperties() 
        {
                $array_metad = array();
                $metadata = $this->template->getElementsByTagName("metadata");
                $nodes = $metadata->item(0)->childNodes;
                for ($i = 0; $i < $nodes->length; $i++ ) {
                        $curNode = $nodes->item($i);
                        $array_metad[$curNode->localName] = $curNode->nodeValue;
                }
                return $array_metad;
        }
        
        
        public static function availableTemplates()
        {
                global $ilDB;
                $arr_templates = array();
                $query = "SELECT * FROM sahs_sc13_seq_templts ORDER BY identifier";
                $result = $ilDB->query($query);
                while($row = $ilDB->fetchAssoc($result)) 
                {       
                        if($row['identifier']!="pretestpost") { //temporarily deactivated
                                array_push($arr_templates,new ilScorm2004SeqTemplate($row['identifier']));
                        }
                }
                return $arr_templates;
        }
        
        
        public function getIdentifier() 
        {
                $seqtemplate = $this->template->getElementsByTagName("seqTemplate");
                return $seqtemplate->item(0)->getAttribute("identifier");;
        }
        
        
        function insertTemplateForObjectAtParent($a_object,$a_parent,$a_target) 
        {
                $this->importId = uniqid();
                return $this->importTemplate($a_target,$a_object,$a_parent, $this->template->getElementsByTagName("item")->item(0));    
        }
        

        
        public function importTemplate($a_target,$a_object,$a_parent,$node) {
                global $ilDB;
                                
                switch($node->getAttribute('type'))
        {
                        case "lesson":
                                if ($this->parentchapter==true) 
                                {
                                        $chap = new ilSCORM2004SeqChapter($a_object);
                                } else {
                                        $chap = new ilSCORM2004Chapter($a_object);
                                }
                                $chap->setTitle($node->getElementsByTagName("title")->item(0)->nodeValue);
                                $chap->setSLMId($a_object->getId());
                                $chap->create();
                                $this->sahs_sc13_treeId = $chap->getId();
                                ilSCORM2004Node::putInTree($chap, $a_parent,$a_target);
                                $a_parent = $this->sahs_sc13_treeId;
                                if ($this->parentchapter==true) 
                        {
                                $ilDB->manipulate("INSERT INTO sahs_sc13_seq_assign (identifier, sahs_sc13_tree_node_id) VALUES ".
                                        "(".$ilDB->quote($this->getIdentifier(), "text").",".
                                                $ilDB->quote($this->sahs_sc13_treeId, "integer").")");
                                $this->parentchapter = false;
                        }
                                $new_id = $chap->getId();
                        break;
                        case "sco" :
                                $sco = new ilSCORM2004Sco($a_object);
                        $sco->setTitle($node->getElementsByTagName("title")->item(0)->nodeValue);
                        $sco->setSLMId($a_object->getId());
                        $sco->create(false,true);
                        $this->sahs_sc13_treeId = $sco->getId();
                        ilSCORM2004Node::putInTree($sco, $a_parent, $target);
                                $new_id = $sco->getId();
                                break;  
                }
                
                $seq_node = $node->getElementsByTagName("sequencing")->item(0);
                
                $obj_node = $seq_node->getElementsByTagName("objectives")->item(0);
                //addtitle
                if ($obj_node) {
                        foreach ($obj_node->childNodes as $objchild ) {
                                if ($objchild->nodeName === "objective" || $objchild->nodeName === "primaryObjective") {
                                $title = $objchild->getAttribute('objectiveID');
                                        $objchild->setAttribute("title",$title);
                                        $i++;
                                }
                        }
                }
                
                $seq_item = new ilSCORM2004Item();
                $seq_item->setTreeNodeId($this->sahs_sc13_treeId);
                $seq_item->setImportid($this->importId);
                $seq_item->setNocopy($seq_node->getAttribute('nocopy'));
                $seq_item->setNodelete($seq_node->getAttribute('nodelete'));
                $seq_item->setNomove($seq_node->getAttribute('nomove'));
                
                $seq_doc = new DOMDocument();
                $toadd = $seq_doc->importNode($seq_node, true);
                $seq_doc->appendChild($toadd);
                
                //generate Unique ObjectiveIDs for context

                //@targetObjectiveID
                $xpath_obj = new DOMXPath($seq_doc);
                
                $found_nodes = $xpath_obj->query('//@objectiveID | //@referencedObjective | //@targetObjectiveID');
                for ($i=0; $i<$found_nodes->length; $i++) {
                        $element = null;
                        $val = $found_nodes->item($i)->value;
                        $uid = $this->sahs_sc13_treeId;
                        if ($found_nodes->item($i)->name == "targetObjectiveID") {
                                $uid = $this->importId;
                        }
                        $val = strtolower(preg_replace('/ +/','_',$val)."_".$uid);
                        $element = $found_nodes->item($i)->ownerElement;
                        $element->setAttribute($found_nodes->item($i)->name,$val);
                }
                
                $seq_item->setDom($seq_doc);
                
                $seq_item->insert();
                
                foreach($node->childNodes as $child)
            {   if ($child->nodeName === "item") {
                        $this->importTemplate($a_target,$a_object,$a_parent,$child);
                        }
            }
                
                return $new_id;
        }       
        

        
        private function generateObjIds($a_dom) {
                
        }
        
        // **********************
        // Standard DB Operations for Object
        // **********************
        
        function insert($a_insert_node = false)
        {
                if ($a_insert_node==true) {$this->setSeqNodeId(parent::insert());}
                $sql = "INSERT INTO sahs_sc13_seq_templ (seqnodeid,id)".
                                " values(".
                                $this->db->quote($this->seqNodeId, "integer").",".
                                $this->db->quote($this->id, "text").");";
                $result = $this->db->manipulate($sql);
                return true;
        }
        
        
        
        // **********************
        // GETTER METHODS
        // **********************
        
        public function getSeqNodeId()
        {
                return $this->seqNodeId;
        }
        
        public function getId()
        {
                return $this->id;
        }
        
        // **********************
        // Setter METHODS
        // **********************

        public function setSeqNodeId($a_seqnodeid)
        {
                $this->seqNodeId = $a_seqnodeid;
        }
        
        public function setId($a_id)
        {
                $this->id = $a_id;
        }
        
        //static functions
        
        public static function getFileNameForIdentifier($a_identifier)
        {
                global $ilDB;
                $query = "SELECT * FROM sahs_sc13_seq_templts WHERE identifier = ".
                        $ilDB->quote($a_identifier, "text");
                $obj_set = $ilDB->query($query);
                $obj_rec = $ilDB->fetchAssoc($obj_set);
                return $obj_rec["fileName"];    // fixed, switch to all lowercase fields and tables in the future for mdb2 compliance
                return $obj_rec["filename"];
        }
        
        public static function templateForChapter($a_chapter_id)
        {
                global $ilDB;
                $template = null;
                $query = "SELECT * FROM sahs_sc13_seq_assign WHERE sahs_sc13_tree_node_id = ".
                        $ilDB->quote($a_chapter_id, "integer");
                $obj_set = $ilDB->query($query);
                $obj_rec = $ilDB->fetchAssoc($obj_set);
                if ($obj_rec['identifier']) {
                        $template = new ilScorm2004SeqTemplate($obj_rec['identifier']);
                } 
                return $template;
        }
        
}

?>