class.ilQTIItem.php

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<?php
/*
        +-----------------------------------------------------------------------------+
        | ILIAS open source                                                           |
        +-----------------------------------------------------------------------------+
        | Copyright (c) 1998-2001 ILIAS open source, University of Cologne            |
        |                                                                             |
        | This program is free software; you can redistribute it and/or               |
        | modify it under the terms of the GNU General Public License                 |
        | as published by the Free Software Foundation; either version 2              |
        | of the License, or (at your option) any later version.                      |
        |                                                                             |
        | This program is distributed in the hope that it will be useful,             |
        | but WITHOUT ANY WARRANTY; without even the implied warranty of              |
        | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the               |
        | GNU General Public License for more details.                                |
        |                                                                             |
        | You should have received a copy of the GNU General Public License           |
        | along with this program; if not, write to the Free Software                 |
        | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA. |
        +-----------------------------------------------------------------------------+
*/

define ("QT_UNKNOWN", "unknown");
define ("QT_MULTIPLE_CHOICE_SR", "assSingleChoice");
define ("QT_MULTIPLE_CHOICE_MR", "assMultipleChoice");
define ("QT_CLOZE", "assClozeTest");
define ("QT_MATCHING", "assMatchingQuestion");
define ("QT_ORDERING", "assOrderingQuestion");
define ("QT_IMAGEMAP", "assImagemapQuestion");
define ("QT_JAVAAPPLET", "assJavaApplet");
define ("QT_TEXT", "assTextQuestion");
define ("QT_NUMERIC", "assNumeric");
define ("QT_TEXTSUBSET", "assTextSubset");

class ilQTIItem
{
        var $ident;
        var $title;
        var $maxattempts;
        var $label;
        var $xmllang;
        
        var $comment;
        var $ilias_version;
        var $author;
        var $questiontype;
        var $duration;
        var $questiontext;
        var $resprocessing;
        var $itemfeedback;
        var $presentation;
        var $presentationitem;
        var $suggested_solutions;
        var $itemmetadata;
        
        function ilQTIItem()
        {
                $this->response = array();
                $this->resprocessing = array();
                $this->itemfeedback = array();
                $this->presentation = NULL;
                $this->presentationitem = array();
                $this->suggested_solutions = array();
                $this->itemmetadata = array();
        }
        
        function setIdent($a_ident)
        {
                $this->ident = $a_ident;
        }
        
        function getIdent()
        {
                return $this->ident;
        }
        
        function setTitle($a_title)
        {
                $this->title = $a_title;
        }
        
        function getTitle()
        {
                return $this->title;
        }
        
        function setComment($a_comment)
        {
                if (preg_match("/(.*?)\=(.*)/", $a_comment, $matches))
                {
                        // special comments written by ILIAS
                        switch ($matches[1])
                        {
                                case "ILIAS Version":
                                        $this->ilias_version = $matches[2];
                                        return;
                                        break;
                                case "Questiontype":
                                        $this->questiontype = $matches[2];
                                        return;
                                        break;
                                case "Author":
                                        $this->author = $matches[2];
                                        return;
                                        break;
                        }
                }
                $this->comment = $a_comment;
        }
        
        function getComment()
        {
                return $this->comment;
        }
        
        function setDuration($a_duration)
        {
                if (preg_match("/P(\d+)Y(\d+)M(\d+)DT(\d+)H(\d+)M(\d+)S/", $a_duration, $matches))
                {
                        $this->duration = array(
                                "h" => $matches[4], 
                                "m" => $matches[5], 
                                "s" => $matches[6]
                        );
                }
        }
        
        function getDuration()
        {
                return $this->duration;
        }
        
        function setQuestiontext($a_questiontext)
        {
                $this->questiontext = $a_questiontext;
        }
        
        function getQuestiontext()
        {
                return $this->questiontext;
        }
        
        function addResprocessing($a_resprocessing)
        {
                array_push($this->resprocessing, $a_resprocessing);
        }
        
        function addItemfeedback($a_itemfeedback)
        {
                array_push($this->itemfeedback, $a_itemfeedback);
        }
        
        function setMaxattempts($a_maxattempts)
        {
                $this->maxattempts = $a_maxattempts;
        }
        
        function getMaxattempts()
        {
                return $this->maxattempts;
        }
        
        function setLabel($a_label)
        {
                $this->label = $a_label;
        }
        
        function getLabel()
        {
                return $this->label;
        }
        
        function setXmllang($a_xmllang)
        {
                $this->xmllang = $a_xmllang;
        }
        
        function getXmllang()
        {
                return $this->xmllang;
        }
        
        function setPresentation($a_presentation)
        {
                $this->presentation = $a_presentation;
        }
        
        function getPresentation()
        {
                return $this->presentation;
        }
        
        function collectResponses()
        {
                $result = array();
                if ($this->presentation != NULL)
                {
                }
        }
        
        function setQuestiontype($a_questiontype)
        {
                $this->questiontype = $a_questiontype;
        }
        
        function getQuestiontype()
        {
                return $this->questiontype;
        }
        
        function addPresentationitem($a_presentationitem)
        {
                array_push($this->presentationitem, $a_presentationitem);
        }

        function determineQuestionType()
        {
                switch ($this->questiontype)
                {
                        case "ORDERING QUESTION":
                                return QT_ORDERING;
                        case "SINGLE CHOICE QUESTION":
                                return QT_MULTIPLE_CHOICE_SR;
                        case "MULTIPLE CHOICE QUESTION":
                                break;
                        case "MATCHING QUESTION":
                                return QT_MATCHING;
                        case "CLOZE QUESTION":
                                return QT_CLOZE;
                        case "IMAGE MAP QUESTION":
                                return QT_IMAGEMAP;
                        case "JAVA APPLET QUESTION":
                                return QT_JAVAAPPLET;
                        case "TEXT QUESTION":
                                return QT_TEXT;
                        case "NUMERIC QUESTION":
                                return QT_NUMERIC;
                        case "TEXTSUBSET QUESTION":
                                return QT_TEXTSUBSET;
                }
                if (!$this->presentation) return QT_UNKNOWN;
                foreach ($this->presentation->order as $entry)
                {
                        switch ($entry["type"])
                        {
                                case "response":
                                        $response = $this->presentation->response[$entry["index"]];
                                        switch ($response->getResponsetype())
                                        {
                                                case RT_RESPONSE_LID:
                                                        switch ($response->getRCardinality())
                                                        {
                                                                case R_CARDINALITY_ORDERED:
                                                                        return QT_ORDERING;
                                                                        break;
                                                                case R_CARDINALITY_SINGLE:
                                                                        return QT_MULTIPLE_CHOICE_SR;
                                                                        break;
                                                                case R_CARDINALITY_MULTIPLE:
                                                                        return QT_MULTIPLE_CHOICE_MR;
                                                                        break;
                                                        }
                                                        break;
                                                case RT_RESPONSE_XY:
                                                        return QT_IMAGEMAP;
                                                        break;
                                                case RT_RESPONSE_STR:
                                                        switch ($response->getRCardinality())
                                                        {
                                                                case R_CARDINALITY_ORDERED:
                                                                        return QT_TEXT;
                                                                        break;
                                                                case R_CARDINALITY_SINGLE:
                                                                        return QT_CLOZE;
                                                                        break;
                                                        }
                                                        break;
                                                case RT_RESPONSE_GRP:
                                                        return QT_MATCHING;
                                                        break;
                                                default:
                                                        break;
                                        }
                                        break;
                                case "material":
                                        $material = $this->presentation->material[$entry["index"]];
                                        if (count($material->matapplet) > 0) return QT_JAVAAPPLET;
                                        break;
                        }
                }
                if (strlen($this->questiontype) == 0)
                {
                        return QT_UNKNOWN;
                }
                else
                {
                        return $this->questiontype;
                }
        }
        
        function setAuthor($a_author)
        {
                $this->author = $a_author;
        }
        
        function getAuthor()
        {
                return $this->author;
        }
        
        function addSuggestedSolution($a_solution, $a_gap_index)
        {
                array_push($this->suggested_solutions, array("solution" => $a_solution, "gap_index" => $a_gap_index));
        }
        
        function addMetadata($a_metadata)
        {
                array_push($this->itemmetadata, $a_metadata);
        }
        
        function getMetadata()
        {
                return $this->itemmetadata;
        }
        
        function getMetadataEntry($a_label)
        {
                foreach ($this->itemmetadata as $metadata)
                {
                        if (strcmp($metadata["label"], $a_label) == 0)
                        {
                                return $metadata["entry"];
                        }
                }
                return null;
        }
}
?>