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195 lines
9.6 KiB
195 lines
9.6 KiB
<?php
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/* For licensing terms, see /license.txt */
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/**
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* Class scormItem
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* This class handles the <item> elements from an imsmanifest file.
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* Container for the scormItem class that deals with <item> elements in an imsmanifest file
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* @package chamilo.learnpath.scorm
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* @author Yannick Warnier <ywarnier@beeznest.org>
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*/
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class scormItem extends learnpathItem
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{
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public $identifier = '';
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public $identifierref = '';
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public $isvisible = '';
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public $parameters = '';
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public $title = '';
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public $sub_items = array();
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public $metadata;
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//public $prerequisites = ''; - defined in learnpathItem.class.php
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// Modified by Ivan Tcholakov, 06-FEB-2010.
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//public $max_time_allowed = ''; //should be something like HHHH:MM:SS.SS
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public $max_time_allowed = '00:00:00';
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//
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public $timelimitaction = '';
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public $datafromlms = '';
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public $mastery_score = '';
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public $scorm_contact;
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/**
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* Class constructor. Depending of the type of construction called ('db' or 'manifest'), will create a scormItem
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* object from database records or from the DOM element given as parameter
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* @param string $type Type of construction needed ('db' or 'manifest', default = 'manifest')
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* @param mixed $element Depending on the type given, DB id for the lp_item or reference to the DOM element
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* @param int $course_id
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*/
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public function __construct($type = 'manifest', &$element, $course_id = '')
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{
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if (isset($element)) {
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// Parsing using PHP5 DOMXML methods.
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switch ($type) {
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case 'db':
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parent::__construct($element, api_get_user_id(), $course_id);
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$this->scorm_contact = false;
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// TODO: Implement this way of metadata object creation.
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return false;
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case 'manifest': // Do the same as the default.
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default:
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//if ($first_item->type == XML_ELEMENT_NODE) this is already check prior to the call to this function.
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$children = $element->childNodes;
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foreach ($children as $child) {
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switch ($child->nodeType) {
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case XML_ELEMENT_NODE:
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switch ($child->tagName) {
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case 'title':
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$tmp_children = $child->childNodes;
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if ($tmp_children->length == 1 && $child->firstChild->nodeValue != '') {
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$this->title = $child->firstChild->nodeValue;
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}
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break;
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case 'max_score':
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if ($tmp_children->length == 1 && $child->firstChild->nodeValue != '') {
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$this->max_score = $child->firstChild->nodeValue;
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}
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break;
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case 'maxtimeallowed':
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case 'adlcp:maxtimeallowed':
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$tmp_children = $child->childNodes;
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if ($tmp_children->length == 1 && $child->firstChild->nodeValue != '') {
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$this->max_time_allowed = $child->firstChild->nodeValue;
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}
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break;
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case 'prerequisites':
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case 'adlcp:prerequisites':
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$tmp_children = $child->childNodes;
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if ($tmp_children->length == 1 && $child->firstChild->nodeValue != '') {
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$this->prereq_string = $child->firstChild->nodeValue;
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}
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break;
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case 'timelimitaction':
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case 'adlcp:timelimitaction':
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$tmp_children = $child->childNodes;
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if ($tmp_children->length == 1 && $child->firstChild->nodeValue != '') {
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$this->timelimitaction = $child->firstChild->nodeValue;
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}
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break;
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case 'datafromlms':
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case 'adlcp:datafromlms':
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case 'adlcp:launchdata': //in some cases (Wouters)
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$tmp_children = $child->childNodes;
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if ($tmp_children->length == 1 && $child->firstChild->nodeValue != '') {
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$this->datafromlms = $child->firstChild->nodeValue;
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}
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break;
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case 'masteryscore':
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case 'adlcp:masteryscore':
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$tmp_children = $child->childNodes;
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if ($tmp_children->length == 1 && $child->firstChild->nodeValue != '') {
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$this->mastery_score = $child->firstChild->nodeValue;
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}
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break;
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case 'item':
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$oItem = new scormItem('manifest', $child);
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if ($oItem->identifier != '') {
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$this->sub_items[$oItem->identifier] = $oItem;
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}
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break;
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case 'metadata':
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$this->metadata = new scormMetadata('manifest', $child);
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break;
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}
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break;
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case XML_TEXT_NODE:
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// This case is actually treated by looking into ELEMENT_NODEs above.
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break;
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}
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}
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if ($element->hasAttributes()) {
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$attributes = $element->attributes;
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//$keep_href = '';
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foreach ($attributes as $attrib) {
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switch ($attrib->name) {
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case 'identifier':
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$this->identifier = $attrib->value;
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break;
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case 'identifierref':
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$this->identifierref = $attrib->value;
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break;
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case 'isvisible':
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$this->isvisible = $attrib->value;
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break;
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case 'parameters':
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$this->parameters = $attrib->value;
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break;
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}
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}
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}
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return true;
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}
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// End parsing using PHP5 DOMXML methods.
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}
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return false;
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}
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/**
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* Builds a flat list with the current item and calls itself recursively on all children
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* @param array Reference to the array to complete with the current item
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* @param integer Optional absolute order (pointer) of the item in this learning path
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* @param integer Optional relative order of the item at this level
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* @param integer Optional level. If not given, assumes it's level 0
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*/
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public function get_flat_list(&$list, &$abs_order, $rel_order = 1, $level = 0)
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{
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$list[] = array(
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'abs_order' => $abs_order,
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'datafromlms' => $this->datafromlms,
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'identifier' => $this->identifier,
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'identifierref' => $this->identifierref,
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'isvisible' => $this->isvisible,
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'level' => $level,
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'masteryscore' => $this->mastery_score,
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'maxtimeallowed' => $this->max_time_allowed,
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'metadata' => $this->metadata,
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'parameters' => $this->parameters,
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'prerequisites' => (!empty($this->prereq_string) ? $this->prereq_string : ''),
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'rel_order' => $rel_order,
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'timelimitaction' => $this->timelimitaction,
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'title' => $this->title,
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'max_score' => $this->max_score
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);
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$abs_order++;
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$i = 1;
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foreach ($this->sub_items as $id => $dummy) {
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$oSubitem = & $this->sub_items[$id];
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$oSubitem->get_flat_list($list, $abs_order, $i, $level + 1);
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$i++;
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}
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}
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/**
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* Save function. Uses the parent save function and adds a layer for SCORM.
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* @param boolean Save from URL params (1) or from object attributes (0)
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*/
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public function save($from_outside = true, $prereqs_complete = false)
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{
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parent::save($from_outside, $prereqs_complete);
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// Under certain conditions, the scorm_contact should not be set, because no scorm signal was sent.
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$this->scorm_contact = true;
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if (!$this->scorm_contact) {
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//error_log('New LP - was expecting SCORM message but none received', 0);
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}
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}
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}
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