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/*global EJS*/ // Will render a Question with multiple choices for answers. // Options format: // { // title: "Optional title for question box", // question: "Question text", // answers: [{text: "Answer text", correct: false}, ...], // singleAnswer: true, // or false, will change rendered output slightly. // singlePoint: true, // True if question give a single point score only // // if all are correct, false to give 1 point per // // correct answer. (Only for singleAnswer=false) // randomAnswers: false // Whether to randomize the order of answers. // } // // Events provided: // - h5pQuestionAnswered: Triggered when a question has been answered. var H5P = H5P || {}; /** * @typedef {Object} Options * Options for multiple choice * * @property {Object} behaviour * @property {boolean} behaviour.confirmCheckDialog * @property {boolean} behaviour.confirmRetryDialog * * @property {Object} UI * @property {string} UI.tipsLabel * * @property {Object} [confirmRetry] * @property {string} [confirmRetry.header] * @property {string} [confirmRetry.body] * @property {string} [confirmRetry.cancelLabel] * @property {string} [confirmRetry.confirmLabel] * * @property {Object} [confirmCheck] * @property {string} [confirmCheck.header] * @property {string} [confirmCheck.body] * @property {string} [confirmCheck.cancelLabel] * @property {string} [confirmCheck.confirmLabel] */ /** * Module for creating a multiple choice question * * @param {Options} options * @param {number} contentId * @param {Object} contentData * @returns {H5P.MultiChoice} * @constructor */ H5P.MultiChoice = function (options, contentId, contentData) { if (!(this instanceof H5P.MultiChoice)) return new H5P.MultiChoice(options, contentId, contentData); var self = this; this.contentId = contentId; this.contentData = contentData; H5P.Question.call(self, 'multichoice'); var $ = H5P.jQuery; // checkbox or radiobutton var texttemplate = '<ul class="h5p-answers" role="<%= role %>" aria-labelledby="<%= label %>">' + ' <% for (var i=0; i < answers.length; i++) { %>' + ' <li class="h5p-answer" role="<%= answers[i].role %>" tabindex="<%= answers[i].tabindex %>" aria-checked="<%= answers[i].checked %>" data-id="<%= i %>">' + ' <div class="h5p-alternative-container">' + ' <span class="h5p-alternative-inner"><%= answers[i].text %></span>' + ' </div>' + ' <div class="h5p-clearfix"></div>' + ' </li>' + ' <% } %>' + '</ul>'; var defaults = { image: null, question: "No question text provided", answers: [ { tipsAndFeedback: { tip: '', chosenFeedback: '', notChosenFeedback: '' }, text: "Answer 1", correct: true } ], overallFeedback: [], weight: 1, userAnswers: [], UI: { checkAnswerButton: 'Check', submitAnswerButton: 'Submit', showSolutionButton: 'Show solution', tryAgainButton: 'Try again', scoreBarLabel: 'You got :num out of :total points', tipAvailable: "Tip available", feedbackAvailable: "Feedback available", readFeedback: 'Read feedback', shouldCheck: "Should have been checked", shouldNotCheck: "Should not have been checked", noInput: 'Input is required before viewing the solution', a11yCheck: 'Check the answers. The responses will be marked as correct, incorrect, or unanswered.', a11yShowSolution: 'Show the solution. The task will be marked with its correct solution.', a11yRetry: 'Retry the task. Reset all responses and start the task over again.', }, behaviour: { enableRetry: true, enableSolutionsButton: true, enableCheckButton: true, type: 'auto', singlePoint: true, randomAnswers: false, showSolutionsRequiresInput: true, autoCheck: false, passPercentage: 100, showScorePoints: true } }; var template = new EJS({text: texttemplate}); var params = $.extend(true, defaults, options); // Keep track of number of correct choices var numCorrect = 0; // Loop through choices for (var i = 0; i < params.answers.length; i++) { var answer = params.answers[i]; // Make sure tips and feedback exists answer.tipsAndFeedback = answer.tipsAndFeedback || {}; if (params.answers[i].correct) { // Update number of correct choices numCorrect++; } } // Determine if no choices is the correct var blankIsCorrect = (numCorrect === 0); // Determine task type if (params.behaviour.type === 'auto') { // Use single choice if only one choice is correct params.behaviour.singleAnswer = (numCorrect === 1); } else { params.behaviour.singleAnswer = (params.behaviour.type === 'single'); } var getCheckboxOrRadioIcon = function (radio, selected) { var icon; if (radio) { icon = selected ? '' : ''; } else { icon = selected ? '' : ''; } return icon; }; // Initialize buttons and elements. var $myDom; var $feedbackDialog; /** * Remove all feedback dialogs */ var removeFeedbackDialog = function () { // Remove the open feedback dialogs. $myDom.unbind('click', removeFeedbackDialog); $myDom.find('.h5p-feedback-button, .h5p-feedback-dialog').remove(); $myDom.find('.h5p-has-feedback').removeClass('h5p-has-feedback'); if ($feedbackDialog) { $feedbackDialog.remove(); } }; var score = 0; var solutionsVisible = false; /** * Add feedback to element * @param {jQuery} $element Element that feedback will be added to * @param {string} feedback Feedback string */ var addFeedback = function ($element, feedback) { $feedbackDialog = $('' + '<div class="h5p-feedback-dialog">' + '<div class="h5p-feedback-inner">' + '<div class="h5p-feedback-text" aria-hidden="true">' + feedback + '</div>' + '</div>' + '</div>'); //make sure feedback is only added once if (!$element.find($('.h5p-feedback-dialog')).length) { $feedbackDialog.appendTo($element.addClass('h5p-has-feedback')); } }; /** * Register the different parts of the task with the H5P.Question structure. */ self.registerDomElements = function () { var media = params.media; if (media && media.type && media.type.library) { media = media.type; var type = media.library.split(' ')[0]; if (type === 'H5P.Image') { if (media.params.file) { // Register task image self.setImage(media.params.file.path, { disableImageZooming: params.media.disableImageZooming || false, alt: media.params.alt, title: media.params.title }); } } else if (type === 'H5P.Video') { if (media.params.sources) { // Register task video self.setVideo(media); } } } // Determine if we're using checkboxes or radio buttons for (var i = 0; i < params.answers.length; i++) { params.answers[i].checkboxOrRadioIcon = getCheckboxOrRadioIcon(params.behaviour.singleAnswer, params.userAnswers.indexOf(i) > -1); } // Register Introduction self.setIntroduction('<div id="' + params.label + '">' + params.question + '</div>'); // Register task content area $myDom = $(template.render(params)); self.setContent($myDom, { 'class': params.behaviour.singleAnswer ? 'h5p-radio' : 'h5p-check' }); // Create tips: var $answers = $('.h5p-answer', $myDom).each(function (i) { var tip = params.answers[i].tipsAndFeedback.tip; if (tip === undefined) { return; // No tip } tip = tip.trim(); var tipContent = tip .replace(/ /g, '') .replace(/<p>/g, '') .replace(/<\/p>/g, '') .trim(); if (!tipContent.length) { return; // Empty tip } else { $(this).addClass('h5p-has-tip'); } // Add tip var $wrap = $('<div/>', { 'class': 'h5p-multichoice-tipwrap', 'aria-label': params.UI.tipAvailable + '.' }); var $multichoiceTip = $('<div>', { 'role': 'button', 'tabindex': 0, 'title': params.UI.tipsLabel, 'aria-label': params.UI.tipsLabel, 'aria-expanded': false, 'class': 'multichoice-tip', appendTo: $wrap }); var tipIconHtml = '<span class="joubel-icon-tip-normal">' + '<span class="h5p-icon-shadow"></span>' + '<span class="h5p-icon-speech-bubble"></span>' + '<span class="h5p-icon-info"></span>' + '</span>'; $multichoiceTip.append(tipIconHtml); $multichoiceTip.click(function () { var $tipContainer = $multichoiceTip.parents('.h5p-answer'); var openFeedback = !$tipContainer.children('.h5p-feedback-dialog').is($feedbackDialog); removeFeedbackDialog(); // Do not open feedback if it was open if (openFeedback) { $multichoiceTip.attr('aria-expanded', true); // Add tip dialog addFeedback($tipContainer, tip); $feedbackDialog.addClass('h5p-has-tip'); // Tip for readspeaker self.read(tip); } else { $multichoiceTip.attr('aria-expanded', false); } self.trigger('resize'); // Remove tip dialog on dom click setTimeout(function () { $myDom.click(removeFeedbackDialog); }, 100); // Do not propagate return false; }).keydown(function (e) { if (e.which === 32) { $(this).click(); return false; } }); $('.h5p-alternative-container', this).append($wrap); }); // Set event listeners. var toggleCheck = function ($ans) { if ($ans.attr('aria-disabled') === 'true') { return; } self.answered = true; var num = parseInt($ans.data('id')); if (params.behaviour.singleAnswer) { // Store answer params.userAnswers = [num]; // Calculate score score = (params.answers[num].correct ? 1 : 0); // De-select previous answer $answers.not($ans).removeClass('h5p-selected').attr('tabindex', '-1').attr('aria-checked', 'false'); // Select new answer $ans.addClass('h5p-selected').attr('tabindex', '0').attr('aria-checked', 'true'); } else { if ($ans.attr('aria-checked') === 'true') { const pos = params.userAnswers.indexOf(num); if (pos !== -1) { params.userAnswers.splice(pos, 1); } // Do not allow un-checking when retry disabled and auto check if (params.behaviour.autoCheck && !params.behaviour.enableRetry) { return; } // Remove check $ans.removeClass('h5p-selected').attr('aria-checked', 'false'); } else { params.userAnswers.push(num); $ans.addClass('h5p-selected').attr('aria-checked', 'true'); } // Calculate score calcScore(); } self.triggerXAPI('interacted'); hideSolution($ans); if (params.userAnswers.length) { self.showButton('check-answer'); self.hideButton('try-again'); self.hideButton('show-solution'); if (params.behaviour.autoCheck) { if (params.behaviour.singleAnswer) { // Only a single answer allowed checkAnswer(); } else { // Show feedback for selected alternatives self.showCheckSolution(true); // Always finish task if it was completed successfully if (score === self.getMaxScore()) { checkAnswer(); } } } } }; $answers.click(function () { toggleCheck($(this)); }).keydown(function (e) { if (e.keyCode === 32) { // Space bar // Select current item toggleCheck($(this)); return false; } if (params.behaviour.singleAnswer) { switch (e.keyCode) { case 38: // Up case 37: { // Left // Try to select previous item var $prev = $(this).prev(); if ($prev.length) { toggleCheck($prev.focus()); } return false; } case 40: // Down case 39: { // Right // Try to select next item var $next = $(this).next(); if ($next.length) { toggleCheck($next.focus()); } return false; } } } }); if (params.behaviour.singleAnswer) { // Special focus handler for radio buttons $answers.focus(function () { if ($(this).attr('aria-disabled') !== 'true') { $answers.not(this).attr('tabindex', '-1'); } }).blur(function () { if (!$answers.filter('.h5p-selected').length) { $answers.first().add($answers.last()).attr('tabindex', '0'); } }); } // Adds check and retry button addButtons(); if (!params.behaviour.singleAnswer) { calcScore(); } else { if (params.userAnswers.length && params.answers[params.userAnswers[0]].correct) { score = 1; } else { score = 0; } } // Has answered through auto-check in a previous session if (hasCheckedAnswer && params.behaviour.autoCheck) { // Check answers if answer has been given or max score reached if (params.behaviour.singleAnswer || score === self.getMaxScore()) { checkAnswer(); } else { // Show feedback for checked checkboxes self.showCheckSolution(true); } } }; this.showAllSolutions = function () { if (solutionsVisible) { return; } solutionsVisible = true; $myDom.find('.h5p-answer').each(function (i, e) { var $e = $(e); var a = params.answers[i]; if (a.correct) { $e.addClass('h5p-should').append($('<span/>', { 'class': 'h5p-solution-icon', html: params.UI.shouldCheck + '.' })); } else { $e.addClass('h5p-should-not').append($('<span/>', { 'class': 'h5p-solution-icon', html: params.UI.shouldNotCheck + '.' })); } }).find('.h5p-question-plus-one, .h5p-question-minus-one').remove(); // Make sure input is disabled in solution mode disableInput(); // Move focus back to the first correct alternative so that the user becomes // aware that the solution is being shown. $myDom.find('.h5p-answer.h5p-should').first().focus(); //Hide buttons and retry depending on settings. self.hideButton('check-answer'); self.hideButton('show-solution'); if (params.behaviour.enableRetry) { self.showButton('try-again'); } self.trigger('resize'); }; /** * Used in contracts. * Shows the solution for the task and hides all buttons. */ this.showSolutions = function () { removeFeedbackDialog(); self.showCheckSolution(); self.showAllSolutions(); disableInput(); self.hideButton('try-again'); }; /** * Hide solution for the given answer(s) * * @private * @param {H5P.jQuery} $answer */ var hideSolution = function ($answer) { $answer .removeClass('h5p-correct') .removeClass('h5p-wrong') .removeClass('h5p-should') .removeClass('h5p-should-not') .removeClass('h5p-has-feedback') .find('.h5p-question-plus-one, .h5p-question-minus-one, .h5p-answer-icon, .h5p-solution-icon, .h5p-feedback-dialog').remove(); }; /** * */ this.hideSolutions = function () { solutionsVisible = false; hideSolution($('.h5p-answer', $myDom)); this.removeFeedback(); // Reset feedback self.trigger('resize'); }; /** * Resets the whole task. * Used in contracts with integrated content. * @private */ this.resetTask = function () { self.answered = false; self.hideSolutions(); params.userAnswers = []; removeSelections(); self.showButton('check-answer'); self.hideButton('try-again'); self.hideButton('show-solution'); enableInput(); $myDom.find('.h5p-feedback-available').remove(); }; var calculateMaxScore = function () { if (blankIsCorrect) { return params.weight; } var maxScore = 0; for (var i = 0; i < params.answers.length; i++) { var choice = params.answers[i]; if (choice.correct) { maxScore += (choice.weight !== undefined ? choice.weight : 1); } } return maxScore; }; this.getMaxScore = function () { return (!params.behaviour.singleAnswer && !params.behaviour.singlePoint ? calculateMaxScore() : params.weight); }; /** * Check answer */ var checkAnswer = function () { // Unbind removal of feedback dialogs on click $myDom.unbind('click', removeFeedbackDialog); // Remove all tip dialogs removeFeedbackDialog(); if (params.behaviour.enableSolutionsButton) { self.showButton('show-solution'); } if (params.behaviour.enableRetry) { self.showButton('try-again'); } self.hideButton('check-answer'); self.showCheckSolution(); disableInput(); var xAPIEvent = self.createXAPIEventTemplate('answered'); addQuestionToXAPI(xAPIEvent); addResponseToXAPI(xAPIEvent); self.trigger(xAPIEvent); }; /** * Determine if any of the radios or checkboxes have been checked. * * @return {boolean} */ var isAnswerSelected = function () { return !!$('.h5p-answer[aria-checked="true"]', $myDom).length; }; /** * Adds the ui buttons. * @private */ var addButtons = function () { var $content = $('[data-content-id="' + self.contentId + '"].h5p-content'); var $containerParents = $content.parents('.h5p-container'); // select find container to attach dialogs to var $container; if($containerParents.length !== 0) { // use parent highest up if any $container = $containerParents.last(); } else if($content.length !== 0){ $container = $content; } else { $container = $(document.body); } // Show solution button self.addButton('show-solution', params.UI.showSolutionButton, function () { if (params.behaviour.showSolutionsRequiresInput && !isAnswerSelected()) { // Require answer before solution can be viewed self.updateFeedbackContent(params.UI.noInput); self.read(params.UI.noInput); } else { calcScore(); self.showAllSolutions(); } }, false, { 'aria-label': params.UI.a11yShowSolution, }); // Check solution button if (params.behaviour.enableCheckButton && (!params.behaviour.autoCheck || !params.behaviour.singleAnswer)) { self.addButton('check-answer', params.UI.checkAnswerButton, function () { self.answered = true; checkAnswer(); }, true, { 'aria-label': params.UI.a11yCheck, }, { confirmationDialog: { enable: params.behaviour.confirmCheckDialog, l10n: params.confirmCheck, instance: self, $parentElement: $container }, contentData: self.contentData, textIfSubmitting: params.UI.submitAnswerButton, } ); } // Try Again button self.addButton('try-again', params.UI.tryAgainButton, function () { self.resetTask(); if (params.behaviour.randomAnswers) { // reshuffle answers var oldIdMap = idMap; idMap = getShuffleMap(); var answersDisplayed = $myDom.find('.h5p-answer'); // remember tips var tip = []; for (i = 0; i < answersDisplayed.length; i++) { tip[i] = $(answersDisplayed[i]).find('.h5p-multichoice-tipwrap'); } // Those two loops cannot be merged or you'll screw up your tips for (i = 0; i < answersDisplayed.length; i++) { // move tips and answers on display $(answersDisplayed[i]).find('.h5p-alternative-inner').html(params.answers[i].text); $(tip[i]).detach().appendTo($(answersDisplayed[idMap.indexOf(oldIdMap[i])]).find('.h5p-alternative-container')); } } }, false, { 'aria-label': params.UI.a11yRetry, }, { confirmationDialog: { enable: params.behaviour.confirmRetryDialog, l10n: params.confirmRetry, instance: self, $parentElement: $container } }); }; /** * @private */ var insertFeedback = function ($e, feedback) { // Add visuals addFeedback($e, feedback); // Add button for readspeakers var $wrap = $('<div/>', { 'class': 'h5p-hidden-read h5p-feedback-available', 'aria-label': params.UI.feedbackAvailable + '.' }); $('<div/>', { 'role': 'button', 'tabindex': 0, 'aria-label': params.UI.readFeedback + '.', appendTo: $wrap, on: { keydown: function (e) { if (e.which === 32) { // Space self.read(feedback); return false; } } } }); $wrap.appendTo($e); }; /** * Determine which feedback text to display * * @param {number} score * @param {number} max * @return {string} */ var getFeedbackText = function (score, max) { var ratio = (score / max); var feedback = H5P.Question.determineOverallFeedback(params.overallFeedback, ratio); return feedback.replace('@score', score).replace('@total', max); }; /** * Shows feedback on the selected fields. * @public * @param {boolean} [skipFeedback] Skip showing feedback if true */ this.showCheckSolution = function (skipFeedback) { var scorePoints; if (!(params.behaviour.singleAnswer || params.behaviour.singlePoint || !params.behaviour.showScorePoints)) { scorePoints = new H5P.Question.ScorePoints(); } $myDom.find('.h5p-answer').each(function (i, e) { var $e = $(e); var a = params.answers[i]; var chosen = ($e.attr('aria-checked') === 'true'); if (chosen) { if (a.correct) { // May already have been applied by instant feedback if (!$e.hasClass('h5p-correct')) { $e.addClass('h5p-correct').append($('<span/>', { 'class': 'h5p-answer-icon', html: params.UI.correctAnswer + '.' })); } } else { if (!$e.hasClass('h5p-wrong')) { $e.addClass('h5p-wrong').append($('<span/>', { 'class': 'h5p-answer-icon', html: params.UI.wrongAnswer + '.' })); } } if (scorePoints) { var alternativeContainer = $e[0].querySelector('.h5p-alternative-container'); if (!params.behaviour.autoCheck || alternativeContainer.querySelector('.h5p-question-plus-one, .h5p-question-minus-one') === null) { alternativeContainer.appendChild(scorePoints.getElement(a.correct)); } } } if (!skipFeedback) { if (chosen && a.tipsAndFeedback.chosenFeedback !== undefined && a.tipsAndFeedback.chosenFeedback !== '') { insertFeedback($e, a.tipsAndFeedback.chosenFeedback); } else if (!chosen && a.tipsAndFeedback.notChosenFeedback !== undefined && a.tipsAndFeedback.notChosenFeedback !== '') { insertFeedback($e, a.tipsAndFeedback.notChosenFeedback); } } }); // Determine feedback var max = self.getMaxScore(); // Disable task if maxscore is achieved var fullScore = (score === max); if (fullScore) { self.hideButton('check-answer'); self.hideButton('try-again'); self.hideButton('show-solution'); } // Show feedback if (!skipFeedback) { this.setFeedback(getFeedbackText(score, max), score, max, params.UI.scoreBarLabel); } self.trigger('resize'); }; /** * Disables choosing new input. */ var disableInput = function () { $('.h5p-answer', $myDom).attr({ 'aria-disabled': 'true', 'tabindex': '-1' }); }; /** * Enables new input. */ var enableInput = function () { $('.h5p-answer', $myDom).attr('aria-disabled', 'false'); }; var calcScore = function () { score = 0; for (const answer of params.userAnswers) { const choice = params.answers[answer]; const weight = (choice.weight !== undefined ? choice.weight : 1); if (choice.correct) { score += weight; } else { score -= weight; } } if (score < 0) { score = 0; } if (!params.userAnswers.length && blankIsCorrect) { score = params.weight; } if (params.behaviour.singlePoint) { score = (100 * score / calculateMaxScore()) >= params.behaviour.passPercentage ? params.weight : 0; } }; /** * Removes selections from task. */ var removeSelections = function () { var $answers = $('.h5p-answer', $myDom) .removeClass('h5p-selected') .attr('aria-checked', 'false'); if (!params.behaviour.singleAnswer) { $answers.attr('tabindex', '0'); } else { $answers.first().attr('tabindex', '0'); } // Set focus to first option $answers.first().focus(); calcScore(); }; /** * Get xAPI data. * Contract used by report rendering engine. * * @see contract at {@link https://h5p.org/documentation/developers/contracts#guides-header-6} */ this.getXAPIData = function(){ var xAPIEvent = this.createXAPIEventTemplate('answered'); addQuestionToXAPI(xAPIEvent); addResponseToXAPI(xAPIEvent); return { statement: xAPIEvent.data.statement }; }; /** * Add the question itself to the definition part of an xAPIEvent */ var addQuestionToXAPI = function (xAPIEvent) { var definition = xAPIEvent.getVerifiedStatementValue(['object', 'definition']); definition.description = { // Remove tags, must wrap in div tag because jQuery 1.9 will crash if the string isn't wrapped in a tag. 'en-US': $('<div>' + params.question + '</div>').text() }; definition.type = 'http://adlnet.gov/expapi/activities/cmi.interaction'; definition.interactionType = 'choice'; definition.correctResponsesPattern = []; definition.choices = []; for (var i = 0; i < params.answers.length; i++) { definition.choices[i] = { 'id': params.answers[i].originalOrder + '', 'description': { // Remove tags, must wrap in div tag because jQuery 1.9 will crash if the string isn't wrapped in a tag. 'en-US': $('<div>' + params.answers[i].text + '</div>').text() } }; if (params.answers[i].correct) { if (!params.singleAnswer) { if (definition.correctResponsesPattern.length) { definition.correctResponsesPattern[0] += '[,]'; // This looks insane, but it's how you separate multiple answers // that must all be chosen to achieve perfect score... } else { definition.correctResponsesPattern.push(''); } definition.correctResponsesPattern[0] += params.answers[i].originalOrder; } else { definition.correctResponsesPattern.push('' + params.answers[i].originalOrder); } } } }; /** * Add the response part to an xAPI event * * @param {H5P.XAPIEvent} xAPIEvent * The xAPI event we will add a response to */ var addResponseToXAPI = function (xAPIEvent) { var maxScore = self.getMaxScore(); var success = (100 * score / maxScore) >= params.behaviour.passPercentage; xAPIEvent.setScoredResult(score, maxScore, self, true, success); if (params.userAnswers === undefined) { calcScore(); } // Add the response var response = ''; for (var i = 0; i < params.userAnswers.length; i++) { if (response !== '') { response += '[,]'; } response += idMap === undefined ? params.userAnswers[i] : idMap[params.userAnswers[i]]; } xAPIEvent.data.statement.result.response = response; }; /** * Create a map pointing from original answers to shuffled answers * * @return {number[]} map pointing from original answers to shuffled answers */ var getShuffleMap = function() { params.answers = H5P.shuffleArray(params.answers); // Create a map from the new id to the old one var idMap = []; for (i = 0; i < params.answers.length; i++) { idMap[i] = params.answers[i].originalOrder; } return idMap; }; // Initialization code // Randomize order, if requested var idMap; // Store original order in answers for (i = 0; i < params.answers.length; i++) { params.answers[i].originalOrder = i; } if (params.behaviour.randomAnswers) { idMap = getShuffleMap(); } // Start with an empty set of user answers. params.userAnswers = []; // Restore previous state if (contentData && contentData.previousState !== undefined) { // Restore answers if (contentData.previousState.answers) { if (!idMap) { params.userAnswers = contentData.previousState.answers; } else { // The answers have been shuffled, and we must use the id mapping. for (i = 0; i < contentData.previousState.answers.length; i++) { for (var k = 0; k < idMap.length; k++) { if (idMap[k] === contentData.previousState.answers[i]) { params.userAnswers.push(k); } } } } calcScore(); } } var hasCheckedAnswer = false; // Loop through choices for (var j = 0; j < params.answers.length; j++) { var ans = params.answers[j]; if (!params.behaviour.singleAnswer) { // Set role ans.role = 'checkbox'; ans.tabindex = '0'; if (params.userAnswers.indexOf(j) !== -1) { ans.checked = 'true'; hasCheckedAnswer = true; } } else { // Set role ans.role = 'radio'; // Determine tabindex, checked and extra classes if (params.userAnswers.length === 0) { // No correct answers if (i === 0 || i === params.answers.length) { ans.tabindex = '0'; } } else if (params.userAnswers.indexOf(j) !== -1) { // This is the correct choice ans.tabindex = '0'; ans.checked = 'true'; hasCheckedAnswer = true; } } // Set default if (ans.tabindex === undefined) { ans.tabindex = '-1'; } if (ans.checked === undefined) { ans.checked = 'false'; } } H5P.MultiChoice.counter = (H5P.MultiChoice.counter === undefined ? 0 : H5P.MultiChoice.counter + 1); params.role = (params.behaviour.singleAnswer ? 'radiogroup' : 'group'); params.label = 'h5p-mcq' + H5P.MultiChoice.counter; /** * Pack the current state of the interactivity into a object that can be * serialized. * * @public */ this.getCurrentState = function () { var state = {}; if (!idMap) { state.answers = params.userAnswers; } else { // The answers have been shuffled and must be mapped back to their // original ID. state.answers = []; for (var i = 0; i < params.userAnswers.length; i++) { state.answers.push(idMap[params.userAnswers[i]]); } } return state; }; /** * Check if user has given an answer. * * @param {boolean} [ignoreCheck] Ignore returning true from pressing "check-answer" button. * @return {boolean} True if answer is given */ this.getAnswerGiven = function (ignoreCheck) { var answered = ignoreCheck ? false : this.answered; return answered || params.userAnswers.length > 0 || blankIsCorrect; }; this.getScore = function () { return score; }; this.getTitle = function () { return H5P.createTitle((this.contentData && this.contentData.metadata && this.contentData.metadata.title) ? this.contentData.metadata.title : 'Multiple Choice'); }; }; H5P.MultiChoice.prototype = Object.create(H5P.Question.prototype); H5P.MultiChoice.prototype.constructor = H5P.MultiChoice;
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