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533 lines
20 KiB
533 lines
20 KiB
<?php
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/* For licensing terms, see /license.txt */
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/**
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* Exercise library
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* shows a question and its answers
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* @package dokeos.exercise
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* @author Olivier Brouckaert <oli.brouckaert@skynet.be>
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* @version $Id: exercise.lib.php 22247 2009-07-20 15:57:25Z ivantcholakov $
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*/
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// The initialization class for the online editor is needed here.
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require_once '../inc/lib/fckeditor/fckeditor.php';
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/**
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* @param int question id
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* @param boolean only answers
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* @param boolean origin i.e = learnpath
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* @param int current item from the list of questions
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* @param int number of total questions
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* */
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function showQuestion($questionId, $onlyAnswers=false, $origin=false,$current_item, $total_item) {
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//change false to true in the following line to enable answer hinting
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$debug_mark_answer = api_is_allowed_to_edit() && false;
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if (!ereg("MSIE", $_SERVER["HTTP_USER_AGENT"])) {
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//echo '<script src="'.api_get_path(WEB_LIBRARY_PATH).'javascript/jquery.js" type="text/javascript"></script>';
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//echo '<script src="'.api_get_path(WEB_LIBRARY_PATH).'javascript/jquery.corners.min.js" type="text/javascript"></script>';
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}
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// reads question informations
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if (!$objQuestionTmp = Question::read($questionId)) {
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// question not found
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return false;
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}
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$answerType=$objQuestionTmp->selectType();
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$pictureName=$objQuestionTmp->selectPicture();
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if ($answerType != HOT_SPOT) {
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// Question is not of type hotspot
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if (!$onlyAnswers) {
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$questionName=$objQuestionTmp->selectTitle();
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$questionDescription=$objQuestionTmp->selectDescription();
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$questionName=api_parse_tex($questionName);
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$s="<div id=\"question_title\" class=\"sectiontitle\">
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".get_lang('Question').' ';
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$s.=$current_item;
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//@todo I need the get the feedback type
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//if($answerType != 1)
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//$s.=' / '.$total_item;
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echo $s;
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echo ' : ';
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echo $questionName.'</div>';
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$s='';
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$s.="<table class='exercise_questions' style='margin:4px;padding:2px;'>
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<tr><td valign='top' colspan='2'>";
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$questionDescription=api_parse_tex($questionDescription);
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$s.=$questionDescription;
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$s.="</td></tr></table>";
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if (!empty($pictureName)) {
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$s.="
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<tr>
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<td align='center' colspan='2'><img src='../document/download.php?doc_url=%2Fimages%2F'".$pictureName."' border='0'></td>
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</tr>";
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}
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}
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$s.= '</table>';
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if (!ereg("MSIE",$_SERVER["HTTP_USER_AGENT"])) {
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$s .= '<div class="rounded exercise_questions" style="width: 720px; padding: 3px;">';
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} else {
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$option_ie="margin-left:10px";
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}
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$s .= '<table width="720" class="exercise_options" style="width: 720px;'.$option_ie.' background-color:#fff;\">';
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// construction of the Answer object (also gets all answers details)
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$objAnswerTmp=new Answer($questionId);
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$nbrAnswers=$objAnswerTmp->selectNbrAnswers();
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// For "matching" type here, we need something a little bit special
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// because the match between the suggestions and the answers cannot be
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// done easily (suggestions and answers are in the same table), so we
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// have to go through answers first (elems with "correct" value to 0).
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$select_items = array();
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//This will contain the number of answers on the left side. We call them
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// suggestions here, for the sake of comprehensions, while the ones
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// on the right side are called answers
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$num_suggestions = 0;
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if ($answerType == MATCHING) {
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$x = 1; //iterate through answers
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$letter = 'A'; //mark letters for each answer
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$answer_matching = $cpt1 = array();
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$answer_suggestions = $nbrAnswers;
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for ($answerId=1;$answerId <= $nbrAnswers;$answerId++) {
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$answerCorrect = $objAnswerTmp->isCorrect($answerId);
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$numAnswer = $objAnswerTmp->selectAutoId($answerId);
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$answer=$objAnswerTmp->selectAnswer($answerId);
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if ($answerCorrect==0) {
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// options (A, B, C, ...) that will be put into the list-box
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// have the "correct" field set to 0 because they are answer
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$cpt1[$x] = $letter;
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$answer_matching[$x]=$objAnswerTmp->selectAnswerByAutoId($numAnswer);
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$x++; $letter++;
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}
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}
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$i = 1;
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foreach ($answer_matching as $id => $value) {
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$select_items[$i]['id'] = $value['id'];
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$select_items[$i]['letter'] = $cpt1[$id];
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$select_items[$i]['answer'] = $value['answer'];
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$i ++;
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}
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$num_suggestions = ($nbrAnswers - $x) + 1;
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} elseif ($answerType == FREE_ANSWER) {
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#$comment = $objAnswerTmp->selectComment(1);
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//
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$oFCKeditor = new FCKeditor("choice[".$questionId."]") ;
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$oFCKeditor->ToolbarSet = 'TestFreeAnswer';
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$oFCKeditor->Width = '100%';
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$oFCKeditor->Height = '200';
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$oFCKeditor->Value = '' ;
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$s .= '<tr><td colspan="3">'.$oFCKeditor->CreateHtml()."</td></tr>";
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//$s.="<tr><td colspan='2'><textarea cols='80' rows='10' name='choice[".$questionId."]'>$answer</textarea></td></tr>";
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}
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// Now navigate through the possible answers, using the max number of
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// answers for the question as a limiter
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$lines_count=1; // a counter for matching-type answers
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for ($answerId=1;$answerId <= $nbrAnswers;$answerId++) {
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$answer = $objAnswerTmp->selectAnswer($answerId);
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$answerCorrect = $objAnswerTmp->isCorrect($answerId);
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$numAnswer = $objAnswerTmp->selectAutoId($answerId);
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if ($answerType == FILL_IN_BLANKS) {
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// splits text and weightings that are joined with the character '::'
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list($answer) = explode('::',$answer);
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// because [] is parsed here we follow this procedure:
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// 1. find everything between the [tex] and [/tex] tags
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$startlocations = api_strpos($answer,'[tex]');
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$endlocations = api_strpos($answer,'[/tex]');
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if ($startlocations !== false && $endlocations !== false) {
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$texstring = api_substr($answer,$startlocations,$endlocations-$startlocations+6);
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// 2. replace this by {texcode}
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$answer = str_replace($texstring,'{texcode}',$answer);
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}
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// 3. do the normal matching parsing
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// replaces [blank] by an input field
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//getting the matches
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$answer = api_ereg_replace('\[[^]]+\]','<input type="text" name="choice['.$questionId.'][]" size="10">',($answer));
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// Change input size
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/*
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preg_match_all('/\[[^]]+]/',$answer,$matches);
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$answer=ereg_replace('\[[^]]+\]','<input type="text" name="choice['.$questionId.'][]" size="@@">',($answer));
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// 4. resize the input
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foreach($matches[0] as $match) {
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$answer_len = strlen($match)-2;
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//we will only replace 1 item
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// echo implode("replace term", explode("search term", "input", $limit));
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if ($answer_len <= 5) {
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$answer = (implode("5", explode("@@", $answer, 2)));
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} elseif($answer_len <= 10) {
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$answer = (implode("10", explode("@@", $answer, 2)));
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} elseif($answer_len <= 20) {
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$answer = (implode("20", explode("@@", $answer, 2)));
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} elseif($answer_len <= 30) {
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$answer = (implode("30", explode("@@", $answer, 2)));
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} elseif($answer_len <= 40) {
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$answer = (implode("45", explode("@@", $answer, 2)));
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} elseif($answer_len <= 50) {
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$answer = (implode("60", explode("@@", $answer, 2)));
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} elseif($answer_len <= 60) {
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$answer = (implode("70", explode("@@", $answer, 2)));
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} elseif($answer_len <= 70) {
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$answer = (implode("80", explode("@@", $answer, 2)));
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} elseif($answer_len <= 80) {
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$answer = (implode("90", explode("@@", $answer, 2)));
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} elseif($answer_len <= 90) {
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$answer = (implode("100", explode("@@", $answer, 2)));
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} elseif($answer_len <= 100) {
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$answer = (implode("110", explode("@@", $answer, 2)));
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} elseif($answer_len > 100 ) {
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$answer = (implode("120", explode("@@", $answer, 2)));
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}
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}
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*/
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// 5. replace the {texcode by the api_pare_tex parsed code}
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$texstring = api_parse_tex($texstring);
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$answer=str_replace("{texcode}",$texstring,$answer);
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}
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// unique answer
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if ($answerType == UNIQUE_ANSWER) {
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// set $debug_mark_answer to true at function start to
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// show the correct answer with a suffix '-x'
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$help = $selected = '';
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if ($debug_mark_answer==true) {
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if ($answerCorrect) {
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$help = 'x-';
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$selected = 'checked="checked"';
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}
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}
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$s .= '<input type="hidden" name="choice2['.$questionId.']" value="0">
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<tr>
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<td colspan="3">
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<div class="u-m-answer">
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<p style="float:left; padding-right:4px;">
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<span><input class="checkbox" type="radio" name="choice['.$questionId.']" value="'.$numAnswer.'" '.$selected.'></p></span>';
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$answer = api_parse_tex($answer);
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$s .= Security::remove_XSS($answer, STUDENT);
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$s .= '</div></td></tr>';
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} elseif ($answerType == MULTIPLE_ANSWER) {
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// multiple answers
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// set $debug_mark_answer to true at function start to
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// show the correct answer with a suffix '-x'
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$help = $selected = '';
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if ($debug_mark_answer==true) {
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if ($answerCorrect) {
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$help = 'x-';
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$selected = 'checked="checked"';
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}
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}
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$s .= '<input type="hidden" name="choice2['.$questionId.']" value="0">
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<tr>
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<td colspan="3">
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<div class="u-m-answer">
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<p style="float:left; padding-right:4px;">
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<span><input class="checkbox" type="checkbox" name="choice['.$questionId.']['.$numAnswer.']" value="1" '.$selected.'></p></span>';
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$answer = api_parse_tex($answer);
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$s .= Security::remove_XSS($answer, STUDENT);
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$s .= '</div></td></tr>';
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} elseif ($answerType == MULTIPLE_ANSWER_COMBINATION) {
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// multiple answers
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// set $debug_mark_answer to true at function start to
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// show the correct answer with a suffix '-x'
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$help = $selected = '';
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if ($debug_mark_answer==true) {
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if ($answerCorrect) {
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$help = 'x-';
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$selected = 'checked="checked"';
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}
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}
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$s .= '<input type="hidden" name="choice2['.$questionId.']" value="0">
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<tr>
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<td colspan="3">
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<div class="u-m-answer">
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<p style="float:left; padding-right:4px;">
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<span><input class="checkbox" type="checkbox" name="choice['.$questionId.']['.$numAnswer.']" value="1" '.$selected.'></p></span>';
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$answer = api_parse_tex($answer);
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$s .= Security::remove_XSS($answer, STUDENT);
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$s .= '</div></td></tr>';
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} elseif ($answerType == FILL_IN_BLANKS) {
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// fill in blanks
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$s .= '<tr><td colspan="3">'.$answer.'</td></tr>';
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} else {
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// matching type, showing suggestions and answers
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// TODO: replace $answerId by $numAnswer
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if ($answerCorrect != 0) {
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// only show elements to be answered (not the contents of
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// the select boxes, who are corrrect = 0)
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$s .= '<tr><td width="45%" valign="top" >';
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$parsed_answer = api_parse_tex($answer);
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//left part questions
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$s .= ' <span style="float:left; width:8%;"><b>'.$lines_count.'</b>. </span>
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<span style="float:left; width:92%;">'.$parsed_answer.'</span></td>';
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//middle part (matches selects)
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$s .= '<td width="10%" valign="top" align="center">
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<select name="choice['.$questionId.']['.$numAnswer.']">
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<option value="0">--</option>';
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// fills the list-box
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foreach ($select_items as $key=>$val) {
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// set $debug_mark_answer to true at function start to
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// show the correct answer with a suffix '-x'
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$help = $selected = '';
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if ($debug_mark_answer==true) {
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if ($val['id'] == $answerCorrect) {
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$help = '-x';
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$selected = 'selected="selected"';
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}
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}
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$s.='<option value="'.$val['id'].'" '.$selected.'>'.$val['letter'].$help.'</option>';
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} // end foreach()
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$s .= '</select> </td>';
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//print_r($select_items);
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//right part (answers)
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$s.='<td width="45%" valign="top" >';
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if (isset($select_items[$lines_count])) {
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$s.='<span style="float:left; width:5%;"><b>'.$select_items[$lines_count]['letter'].'.</b></span>'.
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'<span style="float:left; width:95%;">'.$select_items[$lines_count]['answer'].'</span>';
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} else {
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$s.=' ';
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}
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$s .= '</td>';
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$s .= '</tr>';
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$lines_count++;
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//if the left side of the "matching" has been completely
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// shown but the right side still has values to show...
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if (($lines_count -1) == $num_suggestions) {
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// if it remains answers to shown at the right side
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while (isset($select_items[$lines_count])) {
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$s .= '<tr>
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<td colspan="2"> </td>
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<td valign="top">';
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$s.='<b>'.$select_items[$lines_count]['letter'].'.</b> '.$select_items[$lines_count]['answer'];
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$s.="</td>
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</tr>";
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$lines_count++;
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} // end while()
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} // end if()
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}
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}
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} // end for()
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if (!ereg("MSIE", $_SERVER["HTTP_USER_AGENT"])) {
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$s .= '</table>';
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}
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$s .= '</div><br />';
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// destruction of the Answer object
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unset($objAnswerTmp);
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// destruction of the Question object
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unset($objQuestionTmp);
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if ($origin != 'export') {
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echo $s;
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} else {
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return($s);
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}
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} elseif ($answerType == HOT_SPOT) {
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// Question is of type HOT_SPOT
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$questionName=$objQuestionTmp->selectTitle();
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$questionDescription=$objQuestionTmp->selectDescription();
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// Get the answers, make a list
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$objAnswerTmp=new Answer($questionId);
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$nbrAnswers=$objAnswerTmp->selectNbrAnswers();
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// get answers of hotpost
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$answers_hotspot = array();
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for ($answerId=1;$answerId <= $nbrAnswers;$answerId++) {
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$answers = $objAnswerTmp->selectAnswerByAutoId($objAnswerTmp->selectAutoId($answerId));
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$answers_hotspot[$answers['id']] = $objAnswerTmp->selectAnswer($answerId);
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}
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// display answers of hotpost order by id
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$answer_list = '<div style="padding: 10px; margin-left: 0px; border: 1px solid #A4A4A4; height: 408px; width: 200px;"><b>'.get_lang('HotspotZones').'</b><dl>';
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if (!empty($answers_hotspot)) {
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ksort($answers_hotspot);
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foreach ($answers_hotspot as $key => $value) {
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$answer_list .= '<dt>'.$key.'.- '.$value.'</dt><br />';
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}
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}
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$answer_list .= '</dl></div>';
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if (!$onlyAnswers) {
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echo '<div id="question_title" class="sectiontitle">'.get_lang('Question').' '.$current_item.' : '.$questionName.'</div>';
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//@todo I need to the get the feedback type
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//if($answerType == 2)
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// $s.=' / '.$total_item;
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echo '<input type="hidden" name="hidden_hotspot_id" value="'.$questionId.'">';
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echo '<table class="exercise_questions" >
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<tr>
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<td valign="top" colspan="2">';
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echo $questionDescription=api_parse_tex($questionDescription);
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echo '</td></tr>';
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}
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$canClick = isset($_GET['editQuestion']) ? '0' : (isset($_GET['modifyAnswers']) ? '0' : '1');
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//$tes = isset($_GET['modifyAnswers']) ? '0' : '1';
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//echo $tes;
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$s .= '<script language="JavaScript" type="text/javascript" src="../plugin/hotspot/JavaScriptFlashGateway.js"></script>
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<script src="../plugin/hotspot/hotspot.js" type="text/javascript" language="JavaScript"></script>
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<script language="JavaScript" type="text/javascript">
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<!--
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// Globals
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// Major version of Flash required
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var requiredMajorVersion = 7;
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// Minor version of Flash required
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var requiredMinorVersion = 0;
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// Minor version of Flash required
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var requiredRevision = 0;
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// the version of javascript supported
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var jsVersion = 1.0;
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// -->
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</script>
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<script language="VBScript" type="text/vbscript">
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<!-- // Visual basic helper required to detect Flash Player ActiveX control version information
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Function VBGetSwfVer(i)
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on error resume next
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Dim swControl, swVersion
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swVersion = 0
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set swControl = CreateObject("ShockwaveFlash.ShockwaveFlash." + CStr(i))
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if (IsObject(swControl)) then
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swVersion = swControl.GetVariable("$version")
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end if
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VBGetSwfVer = swVersion
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End Function
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// -->
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</script>
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<script language="JavaScript1.1" type="text/javascript">
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<!-- // Detect Client Browser type
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var isIE = (navigator.appVersion.indexOf("MSIE") != -1) ? true : false;
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var isWin = (navigator.appVersion.toLowerCase().indexOf("win") != -1) ? true : false;
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var isOpera = (navigator.userAgent.indexOf("Opera") != -1) ? true : false;
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jsVersion = 1.1;
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// JavaScript helper required to detect Flash Player PlugIn version information
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function JSGetSwfVer(i) {
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// NS/Opera version >= 3 check for Flash plugin in plugin array
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if (navigator.plugins != null && navigator.plugins.length > 0) {
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if (navigator.plugins["Shockwave Flash 2.0"] || navigator.plugins["Shockwave Flash"]) {
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var swVer2 = navigator.plugins["Shockwave Flash 2.0"] ? " 2.0" : "";
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var flashDescription = navigator.plugins["Shockwave Flash" + swVer2].description;
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descArray = flashDescription.split(" ");
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tempArrayMajor = descArray[2].split(".");
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versionMajor = tempArrayMajor[0];
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versionMinor = tempArrayMajor[1];
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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><br />';
|
|
return $nbrAnswers;
|
|
} |