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- <?php
- /* For licensing terms, see /license.txt */
- /**
- * Class FillBlanks
- *
- * @author Eric Marguin
- * @author Julio Montoya multiple fill in blank option added
- * @package chamilo.exercise
- **/
- class FillBlanks extends Question
- {
- static $typePicture = 'fill_in_blanks.png';
- static $explanationLangVar = 'FillBlanks';
- const FILL_THE_BLANK_STANDARD = 0;
- const FILL_THE_BLANK_MENU = 1;
- const FILL_THE_BLANK_SEVERAL_ANSWER = 2;
- /**
- * Constructor
- */
- public function __construct()
- {
- parent::__construct();
- $this->type = FILL_IN_BLANKS;
- $this->isContent = $this->getIsContent();
- }
- /**
- * function which redefines Question::createAnswersForm
- * @param FormValidator $form
- */
- public function createAnswersForm($form)
- {
- $defaults = array();
- if (!empty($this->id)) {
- $objectAnswer = new Answer($this->id);
- $answer = $objectAnswer->selectAnswer(1);
- $listAnswersInfo = FillBlanks::getAnswerInfo($answer);
- if ($listAnswersInfo["switchable"]) {
- $defaults['multiple_answer'] = 1;
- } else {
- $defaults['multiple_answer'] = 0;
- }
- //take the complete string except after the last '::'
- $defaults['answer'] = $listAnswersInfo["text"];
- $defaults['select_separator'] = $listAnswersInfo["blankseparatornumber"];
- $blanksepartornumber = $listAnswersInfo["blankseparatornumber"];
- } else {
- $defaults['answer'] = get_lang('DefaultTextInBlanks');
- $defaults['select_separator'] = 0;
- $blanksepartornumber = 0;
- }
- $blankSeparatorStart = self::getStartSeparator($blanksepartornumber);
- $blankSeparatorEnd = self::getEndSeparator($blanksepartornumber);
- $setValues = null;
- if (isset($a_weightings) && count($a_weightings) > 0) {
- foreach ($a_weightings as $i => $weighting) {
- $setValues .= 'document.getElementById("weighting['.$i.']").value = "'.$weighting.'";';
- }
- }
- // javascript
- echo '<script>
- var blankSeparatortStart = "'.$blankSeparatorStart.'";
- var blankSeparatortEnd = "'.$blankSeparatorEnd.'";
- var blankSeparatortStartRegexp = getBlankSeparatorRegexp(blankSeparatortStart);
- var blankSeparatortEndRegexp = getBlankSeparatorRegexp(blankSeparatortEnd);
- CKEDITOR.on("instanceCreated", function(e) {
- if (e.editor.name === "answer") {
- e.editor.on("change", updateBlanks);
- }
- });
- var firstTime = true;
- function updateBlanks()
- {
- if (firstTime) {
- var field = document.getElementById("answer");
- var answer = field.value;
- } else {
- var answer = CKEDITOR.instances["answer"].getData();
- }
- // disable the save button, if not blanks have been created
- $("button").attr("disabled", "disabled");
- $("#defineoneblank").show();
- var blanksRegexp = "/"+blankSeparatortStartRegexp+"[^"+blankSeparatortStartRegexp+"]*"+blankSeparatortEndRegexp+"/g";
- var blanks = answer.match(eval(blanksRegexp));
- var fields = "<div class=\"form-group \">";
- fields += "<label class=\"col-sm-2 control-label\">'.get_lang('Weighting').'</label>";
- fields += "<div class=\"col-sm-8\">";
- fields += "<table>";
- fields += "<tr><th style=\"padding:0 20px\">'.get_lang("WordTofind").'</th><th style=\"padding:0 20px\">'.get_lang("QuestionWeighting").'</th><th style=\"padding:0 20px\">'.get_lang("BlankInputSize").'</th></tr>";
- if (blanks != null) {
- for (var i=0 ; i < blanks.length ; i++){
- // remove forbidden characters that causes bugs
- blanks[i] = removeForbiddenChars(blanks[i]);
- // trim blanks between brackets
- blanks[i] = trimBlanksBetweenSeparator(blanks[i], blankSeparatortStart, blankSeparatortEnd);
- // if the word is empty []
- if (blanks[i] == blankSeparatortStartRegexp+blankSeparatortEndRegexp) {
- break;
- }
- // get input size
- var lainputsize = 200;
- if ($("#samplesize\\\["+i+"\\\]").width()) {
- lainputsize = $("#samplesize\\\["+i+"\\\]").width();
- }
- if (document.getElementById("weighting["+i+"]")) {
- var value = document.getElementById("weighting["+i+"]").value;
- } else {
- var value = "10";
- }
- fields += "<tr>";
- fields += "<td>"+blanks[i]+"</td>";
- fields += "<td><input style=\"width:35px\" value=\""+value+"\" type=\"text\" id=\"weighting["+i+"]\" name=\"weighting["+i+"]\" /></td>";
- fields += "<td>";
- fields += "<input type=\"button\" value=\"-\" onclick=\"changeInputSize(-1, "+i+")\">";
- fields += "<input type=\"button\" value=\"+\" onclick=\"changeInputSize(1, "+i+")\">";
- fields += "<input value=\""+blanks[i].substr(1, blanks[i].length - 2)+"\" style=\"width:"+lainputsize+"px\" disabled=disabled id=\"samplesize["+i+"]\"/>";
- fields += "<input type=\"hidden\" id=\"sizeofinput["+i+"]\" name=\"sizeofinput["+i+"]\" value=\""+lainputsize+"\" \"/>";
- fields += "</td>";
- fields += "</tr>";
- // enable the save button
- $("button").removeAttr("disabled");
- $("#defineoneblank").hide();
- }
- }
- document.getElementById("blanks_weighting").innerHTML = fields + "</table></div></div>";
- if (firstTime) {
- firstTime = false;
- ';
- if (isset($listAnswersInfo) && count($listAnswersInfo["tabweighting"]) > 0) {
- foreach ($listAnswersInfo["tabweighting"] as $i => $weighting) {
- if (!empty($i)) {
- echo 'document.getElementById("weighting['.$i.']").value = "'.$weighting.'";';
- }
- }
- foreach ($listAnswersInfo["tabinputsize"] as $i => $sizeOfInput) {
- if (!empty($i)) {
- echo 'document.getElementById("sizeofinput['.$i.']").value = "'.$sizeOfInput.'";';
- echo '$("#samplesize\\\['.$i.'\\\]").width('.$sizeOfInput.');';
- }
- }
- }
- echo '}
- }
- window.onload = updateBlanks;
- function getInputSize() {
- var outTabSize = new Array();
- $("input").each(function() {
- if ($(this).attr("id") && $(this).attr("id").match(/samplesize/)) {
- var tabidnum = $(this).attr("id").match(/\d+/);
- var idnum = tabidnum[0];
- var thewidth = $(this).next().attr("value");
- tabInputSize[idnum] = thewidth;
- }
- });
- }
- function changeInputSize(inCoef, inIdNum)
- {
- var currentWidth = $("#samplesize\\\["+inIdNum+"\\\]").width();
- var newWidth = currentWidth + inCoef * 20;
- newWidth = Math.max(20, newWidth);
- newWidth = Math.min(newWidth, 600);
- $("#samplesize\\\["+inIdNum+"\\\]").width(newWidth);
- $("#sizeofinput\\\["+inIdNum+"\\\]").attr("value", newWidth);
- }
- function removeForbiddenChars(inTxt) {
- outTxt = inTxt;
- outTxt = outTxt.replace(/"/g, ""); // remove the char
- outTxt = outTxt.replace(/\x22/g, ""); // remove the char
- outTxt = outTxt.replace(/"/g, ""); // remove the char
- outTxt = outTxt.replace(/\\\\/g, ""); // remove the \ char
- outTxt = outTxt.replace(/ /g, " ");
- outTxt = outTxt.replace(/^ +/, "");
- outTxt = outTxt.replace(/ +$/, "");
- return outTxt;
- }
- function changeBlankSeparator()
- {
- var separatorNumber = $("#select_separator").val();
- var tabSeparator = getSeparatorFromNumber(separatorNumber);
- blankSeparatortStart = tabSeparator[0];
- blankSeparatortEnd = tabSeparator[1];
- blankSeparatortStartRegexp = getBlankSeparatorRegexp(blankSeparatortStart);
- blankSeparatortEndRegexp = getBlankSeparatorRegexp(blankSeparatortEnd);
- updateBlanks();
- }
- // this function is the same than the PHP one
- // if modify it modify the php one escapeForRegexp
- function getBlankSeparatorRegexp(inTxt)
- {
- var tabSpecialChar = new Array(".", "+", "*", "?", "[", "^", "]", "$", "(", ")",
- "{", "}", "=", "!", "<", ">", "|", ":", "-", ")");
- for (var i=0; i < tabSpecialChar.length; i++) {
- if (inTxt == tabSpecialChar[i]) {
- return "\\\"+inTxt;
- }
- }
- return inTxt;
- }
- // this function is the same than the PHP one
- // if modify it modify the php one getAllowedSeparator
- function getSeparatorFromNumber(innumber)
- {
- tabSeparator = new Array();
- tabSeparator[0] = new Array("[", "]");
- tabSeparator[1] = new Array("{", "}");
- tabSeparator[2] = new Array("(", ")");
- tabSeparator[3] = new Array("*", "*");
- tabSeparator[4] = new Array("#", "#");
- tabSeparator[5] = new Array("%", "%");
- tabSeparator[6] = new Array("$", "$");
- return tabSeparator[innumber];
- }
- function trimBlanksBetweenSeparator(inTxt, inSeparatorStart, inSeparatorEnd)
- {
- // blankSeparatortStartRegexp
- // blankSeparatortEndRegexp
- var result = inTxt
- result = result.replace(inSeparatorStart, "");
- result = result.replace(inSeparatorEnd, "");
- result = result.trim();
- return inSeparatorStart+result+inSeparatorEnd;
- }
- </script>';
- // answer
- $form->addElement('label', null, '<br /><br />'.get_lang('TypeTextBelow').', '.get_lang('And').' '.get_lang('UseTagForBlank'));
- $form->addElement(
- 'html_editor',
- 'answer',
- '<img src="../img/fill_field.png">',
- ['id' => 'answer', 'onkeyup' => "javascript: updateBlanks(this);"],
- array('ToolbarSet' => 'TestQuestionDescription')
- );
- $form->addRule('answer',get_lang('GiveText'),'required');
- //added multiple answers
- $form->addElement('checkbox','multiple_answer','', get_lang('FillInBlankSwitchable'));
- $form->addElement('select', 'select_separator', get_lang("SelectFillTheBlankSeparator"), self::getAllowedSeparatorForSelect(), ' id="select_separator" style="width:150px" onchange="changeBlankSeparator()" ');
- $form->addElement('label', null, '<input type="button" onclick="updateBlanks()" value="'.get_lang('RefreshBlanks').'" class="btn" />');
- $form->addElement('html','<div id="blanks_weighting"></div>');
- global $text;
- // setting the save button here and not in the question class.php
- $form->addElement('html','<div id="defineoneblank" style="color:#D04A66; margin-left:160px">'.get_lang('DefineBlanks').'</div>');
- $form->addButtonSave($text, 'submitQuestion');
- if (!empty($this->id)) {
- $form->setDefaults($defaults);
- } else {
- if ($this->isContent == 1) {
- $form->setDefaults($defaults);
- }
- }
- }
- /**
- * Function which creates the form to create/edit the answers of the question
- * @param FormValidator $form
- */
- public function processAnswersCreation($form)
- {
- $answer = $form->getSubmitValue('answer');
- // Due the ckeditor transform the elements to their HTML value
- //$answer = api_html_entity_decode($answer, ENT_QUOTES, $charset);
- //$answer = htmlentities(api_utf8_encode($answer));
- // remove the :: eventually written by the user
- $answer = str_replace('::', '', $answer);
- // remove starting and ending space and
- $answer = api_preg_replace("/\xc2\xa0/", " ", $answer);
- // start and end separator
- $blankStartSeparator = self::getStartSeparator($form->getSubmitValue('select_separator'));
- $blankEndSeparator = self::getEndSeparator($form->getSubmitValue('select_separator'));
- $blankStartSeparatorRegexp = self::escapeForRegexp($blankStartSeparator);
- $blankEndSeparatorRegexp = self::escapeForRegexp($blankEndSeparator);
- // remove spaces at the beginning and the end of text in square brackets
- $answer = preg_replace_callback(
- "/".$blankStartSeparatorRegexp."[^]]+".$blankEndSeparatorRegexp."/",
- function ($matches) use ($blankStartSeparator, $blankEndSeparator) {
- $matchingResult = $matches[0];
- $matchingResult = trim($matchingResult, $blankStartSeparator);
- $matchingResult = trim($matchingResult, $blankEndSeparator);
- $matchingResult = trim($matchingResult);
- // remove forbidden chars
- $matchingResult = str_replace("/\\/", "", $matchingResult);
- $matchingResult = str_replace('/"/', "", $matchingResult);
- return $blankStartSeparator.$matchingResult.$blankEndSeparator;
- },
- $answer
- );
- // get the blanks weightings
- $nb = preg_match_all(
- '/'.$blankStartSeparatorRegexp.'[^'.$blankStartSeparatorRegexp.']*'.$blankEndSeparatorRegexp.'/',
- $answer,
- $blanks
- );
- if (isset($_GET['editQuestion'])) {
- $this->weighting = 0;
- }
- /* if we have some [tobefound] in the text
- build the string to save the following in the answers table
- <p>I use a [computer] and a [pen].</p>
- becomes
- <p>I use a [computer] and a [pen].</p>::100,50:100,50@1
- ++++++++-------**
- --- -- --- -- -
- A B (C) (D)(E)
- +++++++ : required, weighting of each words
- ------- : optional, input width to display, 200 if not present
- ** : equal @1 if "Allow answers order switches" has been checked, @ otherwise
- A : weighting for the word [computer]
- B : weighting for the word [pen]
- C : input width for the word [computer]
- D : input width for the word [pen]
- E : equal @1 if "Allow answers order switches" has been checked, @ otherwise
- */
- if ($nb > 0) {
- $answer .= '::';
- // weighting
- for ($i=0; $i < $nb; ++$i) {
- // enter the weighting of word $i
- $answer .= $form->getSubmitValue('weighting['.$i.']');
- // not the last word, add ","
- if ($i != $nb - 1) {
- $answer .= ",";
- }
- // calculate the global weighting for the question
- $this -> weighting += $form->getSubmitValue('weighting['.$i.']');
- }
- // input width
- $answer .= ":";
- for ($i=0; $i < $nb; ++$i) {
- // enter the width of input for word $i
- $answer .= $form->getSubmitValue('sizeofinput['.$i.']');
- // not the last word, add ","
- if ($i != $nb - 1) {
- $answer .= ",";
- }
- }
- }
- // write the blank separator code number
- // see function getAllowedSeparator
- /*
- 0 [...]
- 1 {...}
- 2 (...)
- 3 *...*
- 4 #...#
- 5 %...%
- 6 $...$
- */
- $answer .= ":".$form->getSubmitValue('select_separator');
- // Allow answers order switches
- $is_multiple = $form -> getSubmitValue('multiple_answer');
- $answer.= '@'.$is_multiple;
- $this->save();
- $objAnswer = new Answer($this->id);
- $objAnswer->createAnswer($answer, 0, '', 0, 1);
- $objAnswer->save();
- }
- /**
- * @param null $feedback_type
- * @param null $counter
- * @param null $score
- * @return null|string
- */
- public function return_header($feedback_type = null, $counter = null, $score = null)
- {
- $header = parent::return_header($feedback_type, $counter, $score);
- $header .= '<table class="'.$this->question_table_class .'">
- <tr>
- <th>'.get_lang("Answer").'</th>
- </tr>';
- return $header;
- }
- /**
- * @param $separatorStartRegexp
- * @param $separatorEndRegexp
- * @param $correctItemRegexp
- * @param $questionId
- * @param $correctItem
- * @param $attributes
- * @param $answer
- * @param $listAnswersInfo
- * @param $displayForStudent
- * @return string
- */
- public static function getFillTheBlankHtml(
- $separatorStartRegexp,
- $separatorEndRegexp,
- $correctItemRegexp,
- $questionId,
- $correctItem,
- $attributes,
- $answer,
- $listAnswersInfo,
- $displayForStudent,
- $inBlankNumber
- ) {
- $result = "";
- $inTabTeacherSolution = $listAnswersInfo['tabwords'];
- $inTeacherSolution = $inTabTeacherSolution[$inBlankNumber];
- switch (self::getFillTheBlankAnswerType($inTeacherSolution)) {
- case self::FILL_THE_BLANK_MENU:
- $selected = "";
- // the blank menu
- $optionMenu = "";
- // display a menu from answer separated with |
- // if display for student, shuffle the correct answer menu
- $listMenu = self::getFillTheBlankMenuAnswers($inTeacherSolution, $displayForStudent);
- $result .= '<select name="choice['.$questionId.'][]">';
- for ($k=0; $k < count($listMenu); $k++) {
- $selected = "";
- if ($correctItem == $listMenu[$k]) {
- $selected = " selected=selected ";
- }
- // if in teacher view, display the first item by default, which is the right answer
- if ($k==0 && !$displayForStudent) {
- $selected = " selected=selected ";
- }
- $optionMenu .= '<option '.$selected.' value="'.$listMenu[$k].'">'.$listMenu[$k].'</option>';
- }
- if ($selected == "") {
- // no good answer have been found...
- $selected = " selected=selected ";
- }
- $result .= "<option $selected value=''>--</option>";
- $result .= $optionMenu;
- $result .= '</select>';
- break;
- case self::FILL_THE_BLANK_SEVERAL_ANSWER:
- //no break
- case self::FILL_THE_BLANK_STANDARD:
- default:
- $result = Display::input('text', "choice[$questionId][]", $correctItem, $attributes);
- break;
- }
- return $result;
- }
- /**
- * Return an array with the different choices available
- * when the answers between bracket show as a menu
- * @param string $correctAnswer
- * @param bool $displayForStudent true if we want to shuffle the choices of the menu for students
- *
- * @return array
- */
- public static function getFillTheBlankMenuAnswers($correctAnswer, $displayForStudent)
- {
- // if $inDisplayForStudent, then shuffle the result array
- $listChoises = api_preg_split("/\|/", $correctAnswer);
- if ($displayForStudent) {
- shuffle($listChoises);
- }
- return $listChoises;
- }
- /**
- * Return the array index of the student answer
- * @param string $correctAnswer the menu Choice1|Choice2|Choice3
- * @param string $studentAnswer the student answer must be Choice1 or Choice2 or Choice3
- *
- * @return int in the example 0 1 or 2 depending of the choice of the student
- */
- public static function getFillTheBlankMenuAnswerNum($correctAnswer, $studentAnswer)
- {
- $listChoices = self::getFillTheBlankMenuAnswers($correctAnswer, false);
- foreach ($listChoices as $num => $value) {
- if ($value == $studentAnswer) {
- return $num;
- }
- }
- // should not happened, because student choose the answer in a menu of possible answers
- return -1;
- }
- /**
- * Return the possible answer if the answer between brackets is a multiple choice menu
- * @param string $correctAnswer
- *
- * @return array
- */
- public static function getFillTheBlankSeveralAnswers($correctAnswer)
- {
- // is answer||Answer||response||Response , mean answer or Answer ...
- $listSeveral = api_preg_split("/\|\|/", $correctAnswer);
- return $listSeveral;
- }
- /**
- * Return true if student answer is right according to the correctAnswer
- * it is not as simple as equality, because of the type of Fill The Blank question
- * eg : studentAnswer = 'Un' and correctAnswer = 'Un||1||un'
- * @param string $studentAnswer [studentanswer] of the info array of the answer field
- * @param string $correctAnswer [tabwords] of the info array of the answer field
- *
- * @return bool
- */
- public static function isGoodStudentAnswer($studentAnswer, $correctAnswer)
- {
- switch (self::getFillTheBlankAnswerType($correctAnswer)) {
- case self::FILL_THE_BLANK_MENU:
- $listMenu = self::getFillTheBlankMenuAnswers($correctAnswer, false);
- $result = $listMenu[0] == $studentAnswer;
- break;
- case self::FILL_THE_BLANK_SEVERAL_ANSWER:
- // the answer must be one of the choice made
- $listSeveral = self::getFillTheBlankSeveralAnswers($correctAnswer);
- $result = in_array($studentAnswer, $listSeveral);
- break;
- case self::FILL_THE_BLANK_STANDARD:
- default:
- $result = $studentAnswer == $correctAnswer;
- break;
- }
- return $result;
- }
- /**
- * @param string $correctAnswer
- *
- * @return int
- */
- public static function getFillTheBlankAnswerType($correctAnswer)
- {
- if (api_strpos($correctAnswer, "|") && !api_strpos($correctAnswer, "||")) {
- return self::FILL_THE_BLANK_MENU;
- } elseif (api_strpos($correctAnswer, "||")) {
- return self::FILL_THE_BLANK_SEVERAL_ANSWER;
- } else {
- return self::FILL_THE_BLANK_STANDARD;
- }
- }
- /**
- * Return information about the answer
- * @param string $userAnswer the text of the answer of the question
- * @param bool $isStudentAnswer true if it's a student answer false the empty question model
- *
- * @return array of information about the answer
- */
- public static function getAnswerInfo($userAnswer = "", $isStudentAnswer = false)
- {
- $listAnswerResults = array();
- $listAnswerResults['text'] = "";
- $listAnswerResults['wordsCount'] = 0;
- $listAnswerResults['tabwordsbracket'] = array();
- $listAnswerResults['tabwords'] = array();
- $listAnswerResults['tabweighting'] = array();
- $listAnswerResults['tabinputsize'] = array();
- $listAnswerResults['switchable'] = "";
- $listAnswerResults['studentanswer'] = array();
- $listAnswerResults['studentscore'] = array();
- $listAnswerResults['blankseparatornumber'] = 0;
- $listDoubleColon = array();
- api_preg_match("/(.*)::(.*)$/s", $userAnswer, $listResult);
- if (count($listResult) < 2) {
- $listDoubleColon[] = '';
- $listDoubleColon[] = '';
- } else {
- $listDoubleColon[] = $listResult[1];
- $listDoubleColon[] = $listResult[2];
- }
- $listAnswerResults['systemstring'] = $listDoubleColon[1];
- // make sure we only take the last bit to find special marks
- $listArobaseSplit = explode('@', $listDoubleColon[1]);
- if (count($listArobaseSplit) < 2) {
- $listArobaseSplit[1] = "";
- }
- // take the complete string except after the last '::'
- $listDetails = explode(":", $listArobaseSplit[0]);
- // < number of item after the ::[score]:[size]:[separator_id]@ , here there are 3
- if (count($listDetails) < 3) {
- $listWeightings = explode(',', $listDetails[0]);
- $listSizeOfInput = array();
- for ($i=0; $i < count($listWeightings); $i++) {
- $listSizeOfInput[] = 200;
- }
- $blankSeparatorNumber = 0; // 0 is [...]
- } else {
- $listWeightings = explode(',', $listDetails[0]);
- $listSizeOfInput = explode(',', $listDetails[1]);
- $blankSeparatorNumber = $listDetails[2];
- }
- $listAnswerResults['text'] = $listDoubleColon[0];
- $listAnswerResults['tabweighting'] = $listWeightings;
- $listAnswerResults['tabinputsize'] = $listSizeOfInput;
- $listAnswerResults['switchable'] = $listArobaseSplit[1];
- $listAnswerResults['blankseparatorstart'] = self::getStartSeparator($blankSeparatorNumber);
- $listAnswerResults['blankseparatorend'] = self::getEndSeparator($blankSeparatorNumber);
- $listAnswerResults['blankseparatornumber'] = $blankSeparatorNumber;
- $blankCharStart = self::getStartSeparator($blankSeparatorNumber);
- $blankCharEnd = self::getEndSeparator($blankSeparatorNumber);
- $blankCharStartForRegexp = self::escapeForRegexp($blankCharStart);
- $blankCharEndForRegexp = self::escapeForRegexp($blankCharEnd);
- // get all blanks words
- $listAnswerResults['wordsCount'] = api_preg_match_all(
- '/'.$blankCharStartForRegexp.'[^'.$blankCharEndForRegexp.']*'.$blankCharEndForRegexp.'/',
- $listDoubleColon[0],
- $listWords
- );
- if ($listAnswerResults['wordsCount'] > 0) {
- $listAnswerResults['tabwordsbracket'] = $listWords[0];
- // remove [ and ] in string
- array_walk(
- $listWords[0],
- function (&$value, $key, $tabBlankChar) {
- $trimChars = "";
- for ($i=0; $i < count($tabBlankChar); $i++) {
- $trimChars .= $tabBlankChar[$i];
- }
- $value = trim($value, $trimChars);
- },
- array($blankCharStart, $blankCharEnd)
- );
- $listAnswerResults['tabwords'] = $listWords[0];
- }
- // get all common words
- $commonWords = api_preg_replace(
- '/'.$blankCharStartForRegexp.'[^'.$blankCharEndForRegexp.']*'.$blankCharEndForRegexp.'/',
- "::",
- $listDoubleColon[0]
- );
- // if student answer, the second [] is the student answer,
- // the third is if student scored or not
- $listBrackets = array();
- $listWords = array();
- if ($isStudentAnswer) {
- for ($i=0; $i < count($listAnswerResults['tabwords']); $i++) {
- $listBrackets[] = $listAnswerResults['tabwordsbracket'][$i];
- $listWords[] = $listAnswerResults['tabwords'][$i];
- if ($i+1 < count($listAnswerResults['tabwords'])) {
- // should always be
- $i++;
- }
- $listAnswerResults['studentanswer'][] = $listAnswerResults['tabwords'][$i];
- if ($i+1 < count($listAnswerResults['tabwords'])) {
- // should always be
- $i++;
- }
- $listAnswerResults['studentscore'][] = $listAnswerResults['tabwords'][$i];
- }
- $listAnswerResults['tabwords'] = $listWords;
- $listAnswerResults['tabwordsbracket'] = $listBrackets;
- // if we are in student view, we've got 3 times :::::: for common words
- $commonWords = api_preg_replace("/::::::/", "::", $commonWords);
- }
- $listAnswerResults['commonwords'] = explode("::", $commonWords);
- return $listAnswerResults;
- }
- /**
- * Replace the occurrence of blank word with [correct answer][student answer][answer is correct]
- * @param array $listWithStudentAnswer
- *
- * @return string
- */
- public static function getAnswerInStudentAttempt($listWithStudentAnswer)
- {
- $separatorStart = $listWithStudentAnswer['blankseparatorstart'];
- $separatorEnd = $listWithStudentAnswer['blankseparatorend'];
- // lets rebuild the sentence with [correct answer][student answer][answer is correct]
- $result = "";
- for ($i=0; $i < count($listWithStudentAnswer['commonwords']) - 1; $i++) {
- $result .= $listWithStudentAnswer['commonwords'][$i];
- $result .= $listWithStudentAnswer['tabwordsbracket'][$i];
- $result .= $separatorStart.$listWithStudentAnswer['studentanswer'][$i].$separatorEnd;
- $result .= $separatorStart.$listWithStudentAnswer['studentscore'][$i].$separatorEnd;
- }
- $result .= $listWithStudentAnswer['commonwords'][$i];
- $result .= "::";
- // add the system string
- $result .= $listWithStudentAnswer['systemstring'];
- return $result;
- }
- /**
- * This function is the same than the js one above getBlankSeparatorRegexp
- * @param string $inChar
- *
- * @return string
- */
- public static function escapeForRegexp($inChar)
- {
- $listChars = [
- ".",
- "+",
- "*",
- "?",
- "[",
- "^",
- "]",
- "$",
- "(",
- ")",
- "{",
- "}",
- "=",
- "!",
- ">",
- "|",
- ":",
- "-",
- ")",
- ];
- if (in_array($inChar, $listChars)) {
- return "\\".$inChar;
- } else {
- return $inChar;
- }
- }
- /**
- * return $text protected for use in regexp
- * @param string $text
- *
- * @return mixed
- */
- public static function getRegexpProtected($text)
- {
- $listRegexpCharacters = [
- "/",
- ".",
- "+",
- "*",
- "?",
- "[",
- "^",
- "]",
- "$",
- "(",
- ")",
- "{",
- "}",
- "=",
- "!",
- ">",
- "|",
- ":",
- "-",
- ")",
- ];
- $result = $text;
- for ($i=0; $i < count($listRegexpCharacters); $i++) {
- $result = str_replace($listRegexpCharacters[$i], "\\".$listRegexpCharacters[$i], $result);
- }
- return $result;
- }
- /**
- * This function must be the same than the js one getSeparatorFromNumber above
- * @return array
- */
- public static function getAllowedSeparator()
- {
- $fillBlanksAllowedSeparator = array(
- array('[', ']'),
- array('{', '}'),
- array('(', ')'),
- array('*', '*'),
- array('#', '#'),
- array('%', '%'),
- array('$', '$'),
- );
- return $fillBlanksAllowedSeparator;
- }
- /**
- * return the start separator for answer
- * @param string $number
- *
- * @return mixed
- */
- public static function getStartSeparator($number)
- {
- $listSeparators = self::getAllowedSeparator();
- return $listSeparators[$number][0];
- }
- /**
- * return the end separator for answer
- * @param string $number
- *
- * @return mixed
- */
- public static function getEndSeparator($number)
- {
- $listSeparators = self::getAllowedSeparator();
- return $listSeparators[$number][1];
- }
- /**
- * Return as a description text, array of allowed separators for question
- * eg: array("[...]", "(...)")
- * @return array
- */
- public static function getAllowedSeparatorForSelect()
- {
- $listResults = array();
- $fillBlanksAllowedSeparator = self::getAllowedSeparator();
- for ($i=0; $i < count($fillBlanksAllowedSeparator); $i++) {
- $listResults[] = $fillBlanksAllowedSeparator[$i][0]."...".$fillBlanksAllowedSeparator[$i][1];
- }
- return $listResults;
- }
- /**
- * return the code number of the separator for the question
- * @param string $startSeparator
- * @param string $endSeparator
- *
- * @return int
- */
- public function getDefaultSeparatorNumber($startSeparator, $endSeparator)
- {
- $listSeparators = self::getAllowedSeparator();
- $result = 0;
- for ($i=0; $i < count($listSeparators); $i++) {
- if ($listSeparators[$i][0] == $startSeparator &&
- $listSeparators[$i][1] == $endSeparator
- ) {
- $result = $i;
- }
- }
- return $result;
- }
- /**
- * return the HTML display of the answer
- * @param string $answer
- * @param bool $resultsDisabled
- *
- * @return string
- */
- public static function getHtmlDisplayForAnswer($answer, $resultsDisabled = false)
- {
- $result = "";
- $listStudentAnswerInfo = self::getAnswerInfo($answer, true);
- // rebuild the answer with good HTML style
- // this is the student answer, right or wrong
- for ($i=0; $i < count($listStudentAnswerInfo['studentanswer']); $i++) {
- if ($listStudentAnswerInfo['studentscore'][$i] == 1) {
- $listStudentAnswerInfo['studentanswer'][$i] = self::getHtmlRightAnswer(
- $listStudentAnswerInfo['studentanswer'][$i],
- $listStudentAnswerInfo['tabwords'][$i],
- $resultsDisabled
- );
- } else {
- $listStudentAnswerInfo['studentanswer'][$i] = self::getHtmlWrongAnswer(
- $listStudentAnswerInfo['studentanswer'][$i],
- $listStudentAnswerInfo['tabwords'][$i],
- $resultsDisabled
- );
- }
- }
- // rebuild the sentence with student answer inserted
- for ($i=0; $i < count($listStudentAnswerInfo['commonwords']); $i++) {
- $result .= isset($listStudentAnswerInfo['commonwords'][$i]) ? $listStudentAnswerInfo['commonwords'][$i] : '';
- $result .= isset($listStudentAnswerInfo['studentanswer'][$i]) ? $listStudentAnswerInfo['studentanswer'][$i] : '';
- }
- // the last common word (should be </p>)
- $result .= isset($listStudentAnswerInfo['commonwords'][$i]) ? $listStudentAnswerInfo['commonwords'][$i] : '';
- return $result;
- }
- /**
- * return the HTML code of answer for correct and wrong answer
- * @param string $answer
- * @param string $correct
- * @param string $right
- * @param bool $resultsDisabled
- *
- * @return string
- */
- public static function getHtmlAnswer($answer, $correct, $right, $resultsDisabled = false)
- {
- $style = "color: green";
- if (!$right) {
- $style = "color: red; text-decoration: line-through;";
- }
- $type = FillBlanks::getFillTheBlankAnswerType($correct);
- switch ($type) {
- case self::FILL_THE_BLANK_MENU:
- $correctAnswerHtml = "";
- $listPossibleAnswers = FillBlanks::getFillTheBlankMenuAnswers($correct, false);
- $correctAnswerHtml .= "<span style='color: green'>".$listPossibleAnswers[0]."</span>";
- $correctAnswerHtml .= " <span style='font-weight:normal'>(";
- for ($i=1; $i < count($listPossibleAnswers); $i++) {
- $correctAnswerHtml .= $listPossibleAnswers[$i];
- if ($i != count($listPossibleAnswers) - 1) {
- $correctAnswerHtml .= " | ";
- }
- }
- $correctAnswerHtml .= ")</span>";
- break;
- case self::FILL_THE_BLANK_SEVERAL_ANSWER:
- $listCorrects = explode("||", $correct);
- $firstCorrect = $correct;
- if (count($listCorrects) > 0) {
- $firstCorrect = $listCorrects[0];
- }
- $correctAnswerHtml = "<span style='color: green'>".$firstCorrect."</span>";
- break;
- case self::FILL_THE_BLANK_STANDARD:
- default:
- $correctAnswerHtml = "<span style='color: green'>".$correct."</span>";
- }
- if ($resultsDisabled) {
- $correctAnswerHtml = "<span title='".get_lang("ExerciseWithFeedbackWithoutCorrectionComment")."'> - </span>";
- }
- $result = "<span style='border:1px solid black; border-radius:5px; padding:2px; font-weight:bold;'>";
- $result .= "<span style='$style'>".$answer."</span>";
- $result .= " <span style='font-size:120%;'>/</span> ";
- $result .= $correctAnswerHtml;
- $result .= "</span>";
- return $result;
- }
- /**
- * return HTML code for correct answer
- * @param string $answer
- * @param string $correct
- * @param bool $resultsDisabled
- *
- * @return string
- */
- public static function getHtmlRightAnswer($answer, $correct, $resultsDisabled = false)
- {
- return self::getHtmlAnswer($answer, $correct, true, $resultsDisabled);
- }
- /**
- * return HTML code for wrong answer
- * @param string $answer
- * @param string $correct
- * @param bool $resultsDisabled
- *
- * @return string
- */
- public static function getHtmlWrongAnswer($answer, $correct, $resultsDisabled = false)
- {
- return self::getHtmlAnswer($answer, $correct, false, $resultsDisabled);
- }
- }
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