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- <?php // $Id: exercise.lib.php 22247 2009-07-20 15:57:25Z ivantcholakov $
- /*
- ==============================================================================
- Dokeos - elearning and course management software
- Copyright (c) 2004-2008 Dokeos SPRL
- Copyright (c) 2003 Ghent University (UGent)
- Copyright (c) 2001 Universite catholique de Louvain (UCL)
- Copyright (c) various contributors
- For a full list of contributors, see "credits.txt".
- The full license can be read in "license.txt".
- 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.
- See the GNU General Public License for more details.
- Contact address: Dokeos, rue du Corbeau, 108, B-1030 Brussels, Belgium
- Mail: info@dokeos.com
- ==============================================================================
- */
- /**
- * Exercise library
- * shows a question and its answers
- * @package dokeos.exercise
- * @author Olivier Brouckaert <oli.brouckaert@skynet.be>
- * @version $Id: exercise.lib.php 22247 2009-07-20 15:57:25Z ivantcholakov $
- */
- // The initialization class for the online editor is needed here.
- require_once '../inc/lib/fckeditor/fckeditor.php';
- /**
- * @param int question id
- * @param boolean only answers
- * @param boolean origin i.e = learnpath
- * @param int current item from the list of questions
- * @param int number of total questions
- * */
- function showQuestion($questionId, $onlyAnswers=false, $origin=false,$current_item, $total_item)
- {
- if (!ereg("MSIE", $_SERVER["HTTP_USER_AGENT"])) {
- //echo '<script src="'.api_get_path(WEB_LIBRARY_PATH).'javascript/jquery.js" type="text/javascript"></script>';
- //echo '<script src="'.api_get_path(WEB_LIBRARY_PATH).'javascript/jquery.corners.min.js" type="text/javascript"></script>';
- }
- // reads question informations
- if(!$objQuestionTmp = Question::read($questionId))
- {
- // question not found
- return false;
- }
- $answerType=$objQuestionTmp->selectType();
- $pictureName=$objQuestionTmp->selectPicture();
- if ($answerType != HOT_SPOT) // Question is not of type hotspot
- {
- if(!$onlyAnswers) {
- $questionName=$objQuestionTmp->selectTitle();
- $questionDescription=$objQuestionTmp->selectDescription();
- $questionName=api_parse_tex($questionName);
- $s="<div id=\"question_title\" class=\"sectiontitle\">
- ".get_lang('Question').' ';
- $s.=$current_item;
- //@todo I need the get the feedback type
- //if($answerType != 1)
- //$s.=' / '.$total_item;
- echo $s;
- echo ' : ';
- echo $questionName.'</div>';
- $s='';
- $s.="<table class='exercise_questions' style='margin:4px;padding:2px;'>
- <tr><td valign='top' colspan='2'>";
- $questionDescription=api_parse_tex($questionDescription);
- $s.=$questionDescription;
- $s.="</td></tr></table>";
- if(!empty($pictureName))
- {
- $s.="
- <tr>
- <td align='center' colspan='2'><img src='../document/download.php?doc_url=%2Fimages%2F'".$pictureName."' border='0'></td>
- </tr>";
- }
- }
- $s.= '</table>';
- if (!ereg("MSIE",$_SERVER["HTTP_USER_AGENT"])) {
- $s.="<div class=\"rounded exercise_questions\" style=\"width: 720px; padding: 3px; background-color:#ccc;\">";
- } else {
- $option_ie="margin-left:10px";
- }
- $s.="<table width=\"720\" class='exercise_options' style=\"width: 720px;$option_ie background-color:#fff;\">";
- // construction of the Answer object
- $objAnswerTmp=new Answer($questionId);
- $nbrAnswers=$objAnswerTmp->selectNbrAnswers();
- // only used for the answer type "Matching"
- if($answerType == MATCHING)
- {
- $cpt1='A';
- $cpt2=1;
- $Select=array();
- }
- elseif($answerType == FREE_ANSWER)
- {
- #$comment = $objAnswerTmp->selectComment(1);
- //
- $oFCKeditor = new FCKeditor("choice[".$questionId."]") ;
- $oFCKeditor->ToolbarSet = 'TestFreeAnswer';
- $oFCKeditor->Width = '100%';
- $oFCKeditor->Height = '200';
- $oFCKeditor->Value = '' ;
- $s .= "<tr><td colspan='2'>".$oFCKeditor->CreateHtml()."</td></tr>";
- //$s.="<tr><td colspan='2'><textarea cols='80' rows='10' name='choice[".$questionId."]'>$answer</textarea></td></tr>";
- }
- for($answerId=1;$answerId <= $nbrAnswers;$answerId++) {
- $answer=$objAnswerTmp->selectAnswer($answerId);
- $answerCorrect=$objAnswerTmp->isCorrect($answerId);
- if($answerType == FILL_IN_BLANKS) {
- // splits text and weightings that are joined with the character '::'
- list($answer)=explode('::',$answer);
- // because [] is parsed here we follow this procedure:
- // 1. find everything between the [tex] and [/tex] tags
- $startlocations=api_strpos($answer,'[tex]');
- $endlocations=api_strpos($answer,'[/tex]');
- if($startlocations !== false && $endlocations !== false) {
- $texstring=api_substr($answer,$startlocations,$endlocations-$startlocations+6);
- // 2. replace this by {texcode}
- $answer=str_replace($texstring,'{texcode}',$answer);
- }
- // 3. do the normal matching parsing
- // replaces [blank] by an input field
- //getting the matches
- $answer=api_ereg_replace('\[[^]]+\]','<input type="text" name="choice['.$questionId.'][]" size="10">',($answer));
- // Change input size
- /*
- preg_match_all('/\[[^]]+]/',$answer,$matches);
- $answer=ereg_replace('\[[^]]+\]','<input type="text" name="choice['.$questionId.'][]" size="@@">',($answer));
- // 4. resize the input
- foreach($matches[0] as $match) {
- $answer_len = strlen($match)-2;
- //we will only replace 1 item
- // echo implode("replace term", explode("search term", "input", $limit));
- if ($answer_len <= 5) {
- $answer = (implode("5", explode("@@", $answer, 2)));
- } elseif($answer_len <= 10) {
- $answer = (implode("10", explode("@@", $answer, 2)));
- } elseif($answer_len <= 20) {
- $answer = (implode("20", explode("@@", $answer, 2)));
- } elseif($answer_len <= 30) {
- $answer = (implode("30", explode("@@", $answer, 2)));
- } elseif($answer_len <= 40) {
- $answer = (implode("45", explode("@@", $answer, 2)));
- } elseif($answer_len <= 50) {
- $answer = (implode("60", explode("@@", $answer, 2)));
- } elseif($answer_len <= 60) {
- $answer = (implode("70", explode("@@", $answer, 2)));
- } elseif($answer_len <= 70) {
- $answer = (implode("80", explode("@@", $answer, 2)));
- } elseif($answer_len <= 80) {
- $answer = (implode("90", explode("@@", $answer, 2)));
- } elseif($answer_len <= 90) {
- $answer = (implode("100", explode("@@", $answer, 2)));
- } elseif($answer_len <= 100) {
- $answer = (implode("110", explode("@@", $answer, 2)));
- } elseif($answer_len > 100 ) {
- $answer = (implode("120", explode("@@", $answer, 2)));
- }
- }
- */
- // 5. replace the {texcode by the api_pare_tex parsed code}
- $texstring = api_parse_tex($texstring);
- $answer=str_replace("{texcode}",$texstring,$answer);
- }
- // unique answer
- if($answerType == UNIQUE_ANSWER) {
- $s.="<input type='hidden' name='choice2[".$questionId."]' value='0'>
- <tr>
- <td>
- <div class='u-m-answer'>
- <p style='float:left; padding-right:4px;'><input class='checkbox' type='radio' name='choice[".$questionId."]' value='".$answerId."'></p>";
- $answer=api_parse_tex($answer);
- $s.=$answer;
- $s.="</div></td></tr>";
- } elseif($answerType == MULTIPLE_ANSWER) {
- // multiple answers
- $s.="<tr>
- <td>
- <div class='u-m-answer'>
- <p style='float:left; padding-right:4px;'><input class='checkbox' type='checkbox' name='choice[".$questionId."][".$answerId."]' value='1'>
- <input type='hidden' name='choice2[".$questionId."][0]' value='0'></p>";
- $answer = api_parse_tex($answer);
- $s.=$answer;
- $s.="</div></td></tr>";
- }
- // fill in blanks
- elseif($answerType == FILL_IN_BLANKS)
- {
- $s.="<tr><td colspan='2'>$answer</td></tr>";
- }
- // free answer
- // matching
- else {
- if(!$answerCorrect) {
- // options (A, B, C, ...) that will be put into the list-box
- $Select[$answerId]['Lettre']=$cpt1++;
- // answers that will be shown at the right side
- $answer = api_parse_tex($answer);
- $Select[$answerId]['Reponse']=$answer;
- } else {
- $s.="
- <tr>
- <td colspan='2'>
- <table border='0' cellpadding='0' cellspacing='0' width='100%'>
- <tr>";
- $answer=api_parse_tex($answer);
- $s.="<td width='40%' valign='top'><b>".$cpt2."</b>. ".$answer."</td>
- <td width='20%' valign='top' align='center'> <select name='choice[".$questionId."][".$answerId."]'>
- <option value='0'>--</option>";
- // fills the list-box
- foreach($Select as $key=>$val) {
- $s.="<option value='".$key."'>".$val['Lettre']."</option>";
- } // end foreach()
- $s.="</select> </td>
- <td width='40%' valign='top'>";
- if(isset($Select[$cpt2]))
- $s.='<b>'.$Select[$cpt2]['Lettre'].'.</b> '.$Select[$cpt2]['Reponse'];
- else
- $s.=' ';
- $s.="
- </td>
- </tr>
- </table>
- </td>
- </tr>";
- $cpt2++;
- // if the left side of the "matching" has been completely shown
- if($answerId == $nbrAnswers)
- {
- // if it remains answers to shown at the right side
- while(isset($Select[$cpt2])) {
- $s.="<tr>
- <td colspan='2'>
- <table border='0' cellpadding='0' cellspacing='0' width='100%'>
- <tr>
- <td width='60%' colspan='2'> </td>
- <td width='40%' valign='top'>";
- $s.='<b>'.$Select[$cpt2]['Lettre'].'.</b> '.$Select[$cpt2]['Reponse'];
- $s.="</td>
- </tr>
- </table>
- </td>
- </tr>";
- $cpt2++;
- } // end while()
- } // end if()
- }
- }
- } // end for()
- if (!ereg("MSIE", $_SERVER["HTTP_USER_AGENT"])) {
- $s .= '</table>';
- }
- $s .= '</div>';
- // destruction of the Answer object
- unset($objAnswerTmp);
- // destruction of the Question object
- unset($objQuestionTmp);
- if ($origin != 'export')
- {
- echo $s;
- }
- else
- {
- return($s);
- }
- }
- elseif ($answerType == HOT_SPOT) // Question is of type HOT_SPOT
- {
- $questionName=$objQuestionTmp->selectTitle();
- $questionDescription=$objQuestionTmp->selectDescription();
- // Get the answers, make a list
- $objAnswerTmp=new Answer($questionId);
- $nbrAnswers=$objAnswerTmp->selectNbrAnswers();
- $answer_list = '<div style="padding: 10px; margin-left: 0px; border: 1px solid #A4A4A4; height: 408px; width: 200px;"><b>'.get_lang('HotspotZones').'</b><dl>';
- for($answerId=1;$answerId <= $nbrAnswers;$answerId++)
- {
- $answer_list .= '<dt>'.$answerId.'.- '.$objAnswerTmp->selectAnswer($answerId).'</dt><br>';
- }
- $answer_list .= '</dl></div>';
- if(!$onlyAnswers)
- {
- $s="<div id=\"question_title\" class=\"sectiontitle\">
- ".get_lang('Question').' ';
- $s.="<input type='hidden' name='hidden_hotspot_id' value='$questionId'>";
- $s.=$current_item;
- //@todo I need to the get the feedback type
- //if($answerType == 2)
- // $s.=' / '.$total_item;
- echo $s;
- echo ': ';
- $s =$questionName.'</div>';
- $s.="<table class='exercise_questions'>
- <tr>
- <td valign='top' colspan='2'>
- ";
- $questionDescription=api_parse_tex($questionDescription);
- $s.=$questionDescription;
- $s.="
- </td>
- </tr>";
- }
- $canClick = isset($_GET['editQuestion']) ? '0' : (isset($_GET['modifyAnswers']) ? '0' : '1');
- //$tes = isset($_GET['modifyAnswers']) ? '0' : '1';
- //echo $tes;
- $s .= "<script type=\"text/javascript\" src=\"../plugin/hotspot/JavaScriptFlashGateway.js\"></script>
- <script src=\"../plugin/hotspot/hotspot.js\" type=\"text/javascript\"></script>
- <script language=\"JavaScript\" type=\"text/javascript\">
- <!--
- // -----------------------------------------------------------------------------
- // Globals
- // Major version of Flash required
- var requiredMajorVersion = 7;
- // Minor version of Flash required
- var requiredMinorVersion = 0;
- // Minor version of Flash required
- var requiredRevision = 0;
- // the version of javascript supported
- var jsVersion = 1.0;
- // -----------------------------------------------------------------------------
- // -->
- </script>
- <script language=\"VBScript\" type=\"text/vbscript\">
- <!-- // Visual basic helper required to detect Flash Player ActiveX control version information
- Function VBGetSwfVer(i)
- on error resume next
- Dim swControl, swVersion
- swVersion = 0
- set swControl = CreateObject(\"ShockwaveFlash.ShockwaveFlash.\" + CStr(i))
- if (IsObject(swControl)) then
- swVersion = swControl.GetVariable(\"\$version\")
- end if
- VBGetSwfVer = swVersion
- End Function
- // -->
- </script>
- <script language=\"JavaScript1.1\" type=\"text/javascript\">
- <!-- // Detect Client Browser type
- var isIE = (navigator.appVersion.indexOf(\"MSIE\") != -1) ? true : false;
- var isWin = (navigator.appVersion.toLowerCase().indexOf(\"win\") != -1) ? true : false;
- var isOpera = (navigator.userAgent.indexOf(\"Opera\") != -1) ? true : false;
- jsVersion = 1.1;
- // JavaScript helper required to detect Flash Player PlugIn version information
- function JSGetSwfVer(i){
- // NS/Opera version >= 3 check for Flash plugin in plugin array
- if (navigator.plugins != null && navigator.plugins.length > 0) {
- if (navigator.plugins[\"Shockwave Flash 2.0\"] || navigator.plugins[\"Shockwave Flash\"]) {
- var swVer2 = navigator.plugins[\"Shockwave Flash 2.0\"] ? \" 2.0\" : \"\";
- var flashDescription = navigator.plugins[\"Shockwave Flash\" + swVer2].description;
- descArray = flashDescription.split(\" \");
- tempArrayMajor = descArray[2].split(\".\");
- versionMajor = tempArrayMajor[0];
- versionMinor = tempArrayMajor[1];
- if ( descArray[3] != \"\" ) {
- tempArrayMinor = descArray[3].split(\"r\");
- } else {
- tempArrayMinor = descArray[4].split(\"r\");
- }
- versionRevision = tempArrayMinor[1] > 0 ? tempArrayMinor[1] : 0;
- flashVer = versionMajor + \".\" + versionMinor + \".\" + versionRevision;
- } else {
- flashVer = -1;
- }
- }
- // MSN/WebTV 2.6 supports Flash 4
- else if (navigator.userAgent.toLowerCase().indexOf(\"webtv/2.6\") != -1) flashVer = 4;
- // WebTV 2.5 supports Flash 3
- else if (navigator.userAgent.toLowerCase().indexOf(\"webtv/2.5\") != -1) flashVer = 3;
- // older WebTV supports Flash 2
- else if (navigator.userAgent.toLowerCase().indexOf(\"webtv\") != -1) flashVer = 2;
- // Can't detect in all other cases
- else
- {
- flashVer = -1;
- }
- return flashVer;
- }
- // When called with reqMajorVer, reqMinorVer, reqRevision returns true if that version or greater is available
- function DetectFlashVer(reqMajorVer, reqMinorVer, reqRevision)
- {
- reqVer = parseFloat(reqMajorVer + \".\" + reqRevision);
- // loop backwards through the versions until we find the newest version
- for (i=25;i>0;i--) {
- if (isIE && isWin && !isOpera) {
- versionStr = VBGetSwfVer(i);
- } else {
- versionStr = JSGetSwfVer(i);
- }
- if (versionStr == -1 ) {
- return false;
- } else if (versionStr != 0) {
- if(isIE && isWin && !isOpera) {
- tempArray = versionStr.split(\" \");
- tempString = tempArray[1];
- versionArray = tempString .split(\",\");
- } else {
- versionArray = versionStr.split(\".\");
- }
- versionMajor = versionArray[0];
- versionMinor = versionArray[1];
- versionRevision = versionArray[2];
- versionString = versionMajor + \".\" + versionRevision; // 7.0r24 == 7.24
- versionNum = parseFloat(versionString);
- // is the major.revision >= requested major.revision AND the minor version >= requested minor
- if ( (versionMajor > reqMajorVer) && (versionNum >= reqVer) ) {
- return true;
- } else {
- return ((versionNum >= reqVer && versionMinor >= reqMinorVer) ? true : false );
- }
- }
- }
- }
- // -->
- </script>";
- $s .= '<tr><td valign="top" colspan="2" width="520"><table><tr><td width="520">'."
- <script language=\"JavaScript\" type=\"text/javascript\">
- <!--
- // Version check based upon the values entered above in \"Globals\"
- var hasReqestedVersion = DetectFlashVer(requiredMajorVersion, requiredMinorVersion, requiredRevision);
- // Check to see if the version meets the requirements for playback
- if (hasReqestedVersion) { // if we've detected an acceptable version
- var oeTags = '<object type=\"application/x-shockwave-flash\" data=\"../plugin/hotspot/hotspot_user.swf?modifyAnswers=".$questionId."&canClick:".$canClick."\" width=\"560\" height=\"436\">'
- + '<param name=\"movie\" value=\"../plugin/hotspot/hotspot_user.swf?modifyAnswers=".$questionId."&canClick:".$canClick."\" \/>'
- + '<\/object>';
- document.write(oeTags); // embed the Flash Content SWF when all tests are passed
- } else { // flash is too old or we can't detect the plugin
- var alternateContent = 'Error<br \/>'
- + 'Hotspots requires Macromedia Flash 7.<br \/>'
- + '<a href=http://www.macromedia.com/go/getflash/>Get Flash<\/a>';
- document.write(alternateContent); // insert non-flash content
- }
- // -->
- </script></td>
- <td valign='top' align='left'>$answer_list</td></tr></table>
- </td></tr>";
- echo $s;
- }
- echo "</table>";
- return $nbrAnswers;
- }
- ?>
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