class.ilSCORM2004Page.php

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<?php
/* Copyright (c) 1998-2009 ILIAS open source, Extended GPL, see docs/LICENSE */

include_once("./Services/COPage/classes/class.ilPageObject.php");

class ilSCORM2004Page extends ilPageObject
{
        protected $glossary_id = 0;
        protected $mobs_contained = array();
        protected $files_contained = array();
        
        function getParentType()
        {
                return "sahs";
        }       

        function afterConstructor()
        {
                $this->getPageConfig()->configureByObjectId($this->getParentId());
        }
        
        
        function setScormLmId($a_scormlmid)
        {
                $this->scormlmid = $a_scormlmid;
        }

        function getScormLmId()
        {
                return $this->scormlmid;
        }

        function setGlossaryId($a_val)
        {
                $this->glossary_id = $a_val;
        }
        
        function getGlossaryId()
        {
                return $this->glossary_id;
        }
        
        function create()
        {
                global $ilDB;
                
                // maybe we need an additional table here?
                
                // create page object
                parent::create();
        }
        
        
        function createWithLayoutId($a_layout_id)
        {

                include_once("./Services/Style/classes/class.ilPageLayout.php");

                //get XML Data for Layout               
                $layout_obj = new ilPageLayout($a_layout_id);
                
                parent::setXMLContent($layout_obj->getXMLContent());
                // create page object
                parent::create();
        }

        function update($a_validate = true, $a_no_history = false)
        {
                global $ilDB;

                // maybe we need an additional table here?
                
                parent::update($a_validate, $a_no_history);

                return true;
        }
        
        function read()
        {
                global $ilDB;
                
                // maybe we need an additional table here?
                
                // get co page
                parent::read();
        }


        function delete()
        {
                global $ilDB;
                
                // maybe we need an additional table here?
                
                // delete co page
                parent::delete();
                
                return true;
        }

        
        
        function exportXML(&$a_xml_writer, $a_mode = "normal", $a_inst = 0)
        {
                global $ilBench;

                $attrs = array();
                $a_xml_writer->xmlStartTag("PageObject", $attrs);

                switch ($a_mode)
                {
                        case "normal":
                                // MetaData
                                $ilBench->start("ContentObjectExport", "exportPageObject_XML_Meta");
                                $this->exportXMLMetaData($a_xml_writer);
                                $ilBench->stop("ContentObjectExport", "exportPageObject_XML_Meta");

                                // PageContent
                                $ilBench->start("ContentObjectExport", "exportPageObject_XML_PageContent");
                                $this->exportXMLPageContent($a_xml_writer, $a_inst);
                                $ilBench->stop("ContentObjectExport", "exportPageObject_XML_PageContent");
                                break;

                        case "alias":
                                $attrs = array();
                                $attrs["OriginId"] = "il_".$a_inst.
                                        "_pg_".$this->getId();
                                $a_xml_writer->xmlElement("PageAlias", $attrs);
                                break;
                }

                $a_xml_writer->xmlEndTag("PageObject");
        }


        /* todo: this needs to be adopted
         function _exportXMLAlias(&$a_xml_writer, $a_id, $a_inst = 0)
         {
                $attrs = array();
                $a_xml_writer->xmlStartTag("PageObject", $attrs);

                $attrs = array();
                $attrs["OriginId"] = "il_".$a_inst.
                "_pg_".$a_id;
                $a_xml_writer->xmlElement("PageAlias", $attrs);

                $a_xml_writer->xmlEndTag("PageObject");
                }
                */

        function exportXMLMetaData(&$a_xml_writer)
        {
                include_once("Services/MetaData/classes/class.ilMD2XML.php");
                $md2xml = new ilMD2XML($this->getParentId(), $this->getId(), gettype($this));
                $md2xml->setExportMode(true);
                $md2xml->startExport();
                $a_xml_writer->appendXML($md2xml->getXML());
        }


        /* todo: this needs to be adopted
         function modifyExportIdentifier($a_tag, $a_param, $a_value)
         {
                if ($a_tag == "Identifier" && $a_param == "Entry")
                {
                $a_value = "il_".IL_INST_ID."_pg_".$this->getId();
                //$a_value = ilUtil::insertInstIntoID($a_value);
                }

                return $a_value;
                }
                */

        function exportXMLPageContent(&$a_xml_writer, $a_inst = 0)
        {
                $this->buildDom();
                $this->insertInstIntoIDs($a_inst);
                $cont_obj =& $this->getContentObject("pg");
                $this->mobs_contained = $this->collectMediaObjects(false);
                include_once("./Services/COPage/classes/class.ilPCFileList.php");
                $this->files_contained = ilPCFileList::collectFileItems($this, $this->getDomDoc());
                $xml = $this->getXMLFromDom(false, false, false, "", true);
                $xml = str_replace("&","&amp;", $xml);
                $a_xml_writer->appendXML($xml);

                $this->freeDom();
        }
        
        
        function getMediaObjectIds()
        {
                return $this->mobs_contained;
        }

        function getFileItemIds()
        {
                return $this->files_contained;
        }
        
        function performAutomaticModifications()
        {
                // disabled this due to #0011195
                // this does not really work well. Besides creating duplicates, it does not ensure that all
                // glossary terms are in the assigned glossary. Copying whole pages does not trigger
                // this procedure. Moreover if no glossary is attached copying pages will still create links
                // in the target SCORM LM. The SCORM Export seesm to work well, even if terms are in other glossaries

                return;

                if ($this->getGlossaryId() > 0)
                {
                        // we fix glossary links here
                        $this->buildDom();
                        $xpc = xpath_new_context($this->dom);
                        $path = "//IntLink[@Type='GlossaryItem']";
                        $res =& xpath_eval($xpc, $path);
                        for ($i=0; $i < count($res->nodeset); $i++)
                        {
                                $target = $res->nodeset[$i]->get_attribute("Target");
//echo "<br>".$target;
                                $tarr = explode("_", $target);
                                $term_id = $tarr[count($tarr) - 1];
                                if (is_int(strpos($target, "__")) && $term_id > 0)
                                {
                                        include_once("./Modules/Glossary/classes/class.ilGlossaryTerm.php");
//echo "<br>-".ilGlossaryTerm::_lookGlossaryID($term_id)."-".$this->getGlossaryId()."-";
                                        if (ilGlossaryTerm::_lookGlossaryID($term_id) != $this->getGlossaryId())
                                        {
                                                // copy the glossary term from glossary a to b
                                                $new_id = ilGlossaryTerm::_copyTerm($term_id, $this->getGlossaryId());
                                                $res->nodeset[$i]->set_attribute("Target", "il__git_".$new_id);
                                        }
                                }
                        }
                }
//exit;
        }

        function removeInvalidLinks()
        {
                $this->buildDom();

                // find all Keyw tags
                $xpath = new DOMXPath($this->getDomDoc());
                $nodes = $xpath->query('//Paragraph//IntLink');
                $to_del = array();
                foreach($nodes as $node)
                {
                        if (in_array($node->getAttribute("Type"), array("File", "GlossaryItem")))
                        {
                                continue;
                        }
                        $to_del[] = $node;
                        $parent = $node->parentNode;
                        $childs = array();
                        foreach ($node->childNodes as $c)
                        {
                                $childs[] = $c;
                        }
                        foreach ($childs as $c)
                        {
                                $node->removeChild($c);
                                $parent->insertBefore($c, $node);
                        }
                }
                foreach ($to_del as $n)
                {
                        $p = $n->parentNode;
                        $p->removeChild($n);
                }
                $this->update();
        }

}
?>