663 lines
21 KiB
JavaScript
663 lines
21 KiB
JavaScript
var H5P = H5P || {};
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/**
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* Will render a Question with multiple choices for answers.
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*
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* Events provided:
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* - h5pQuestionSetFinished: Triggered when a question is finished. (User presses Finish-button)
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*
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* @param {Array} options
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* @param {int} contentId
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* @returns {H5P.QuestionSet} Instance
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*/
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H5P.QuestionSet = function (options, contentId) {
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if (!(this instanceof H5P.QuestionSet)) {
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return new H5P.QuestionSet(options, contentId);
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}
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H5P.EventDispatcher.call(this);
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var $ = H5P.jQuery;
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var self = this;
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this.contentId = contentId;
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var texttemplate =
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'<% if (introPage.showIntroPage) { %>' +
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'<div class="intro-page">' +
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' <% if (introPage.title) { %>' +
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' <div class="title"><span><%= introPage.title %></span></div>' +
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' <% } %>' +
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' <% if (introPage.introduction) { %>' +
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' <div class="introduction"><%= introPage.introduction %></div>' +
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' <% } %>' +
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' <div class="buttons"><a class="qs-startbutton h5p-joubelui-button h5p-button"><%= introPage.startButtonText %></a></div>' +
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'</div>' +
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'<% } %>' +
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'<div class="questionset<% if (introPage.showIntroPage) { %> hidden<% } %>">' +
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' <% for (var i=0; i<questions.length; i++) { %>' +
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' <div class="question-container"></div>' +
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' <% } %>' +
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' <div class="qs-footer">' +
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' <div class="qs-progress">' +
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' <% if (progressType == "dots") { %>' +
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' <div class="dots-container">' +
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' <% for (var i=0; i<questions.length; i++) { %>' +
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' <a href="#" class="progress-dot unanswered" aria-label="<%= questions[i].jumpAriaLabel %>"></a>' +
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' <%} %>' +
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' </div>' +
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' <% } else if (progressType == "textual") { %>' +
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' <span class="progress-text"></span>' +
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' <% } %>' +
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' </div>' +
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' </div>' +
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'</div>';
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var resulttemplate =
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'<div class="questionset-results">' +
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' <div class="greeting"><%= message %></div>' +
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' <div class="feedback-section">' +
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' <div class="feedback-scorebar"></div>' +
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' <div class="feedback-text"></div>' +
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' </div>' +
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' <% if (comment) { %>' +
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' <div class="result-header"><%= comment %></div>' +
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' <% } %>' +
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' <% if (resulttext) { %>' +
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' <div class="result-text"><%= resulttext %></div>' +
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' <% } %>' +
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' <div class="buttons">' +
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' <button type="button" class="h5p-joubelui-button h5p-button qs-finishbutton"><%= finishButtonText %></button>' +
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' <button type="button" class="h5p-joubelui-button h5p-button qs-solutionbutton"><%= solutionButtonText %></button>' +
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' <button type="button" class="h5p-joubelui-button h5p-button qs-retrybutton"><%= retryButtonText %></button>' +
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' </div>' +
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'</div>';
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var defaults = {
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randomOrder: false,
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initialQuestion: 0,
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progressType: 'dots',
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passPercentage: 50,
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questions: [],
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introPage: {
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showIntroPage: false,
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title: '',
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introduction: '',
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startButtonText: 'Start'
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},
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texts: {
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prevButton: 'Previous question',
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nextButton: 'Next question',
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finishButton: 'Finish',
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textualProgress: 'Question: @current of @total questions',
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jumpToQuestion: 'Jump to question %d',
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questionLabel: 'Question'
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},
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endGame: {
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showResultPage: true,
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noResultMessage: 'Finished',
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message: 'Your result:',
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successGreeting: 'Congratulations!',
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successComment: 'You have enough correct answers to pass the test.',
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failGreeting: 'Sorry!',
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failComment: "You don't have enough correct answers to pass this test.",
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scoreString: 'You got @score of @total points',
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finishButtonText: 'Finish',
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solutionButtonText: 'Show solution',
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retryButtonText: 'Retry',
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showAnimations: false,
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skipButtonText: 'Skip video'
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}
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};
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var template = new EJS({text: texttemplate});
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var endTemplate = new EJS({text: resulttemplate});
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var params = $.extend(true, {}, defaults, options);
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var currentQuestion = 0;
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var questionInstances = [];
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var $myDom;
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var scoreBar;
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var up;
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renderSolutions = false;
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var $template = $(template.render(params));
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// Set overrides for questions
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var override;
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if (params.override.showSolutionButton || params.override.retryButton) {
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override = {};
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if (params.override.showSolutionButton) {
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// Force "Show solution" button to be on or off for all interactions
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override.enableSolutionsButton =
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(params.override.showSolutionButton === 'on' ? true : false);
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}
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if (params.override.retryButton) {
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// Force "Retry" button to be on or off for all interactions
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override.enableRetry =
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(params.override.retryButton === 'on' ? true : false);
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}
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}
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// Instantiate question instances
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for (var i = 0; i < params.questions.length; i++) {
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var question = params.questions[i];
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question.jumpAriaLabel = params.texts.jumpToQuestion.replace('%d', i + 1);
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if (override) {
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// Extend subcontent with the overrided settings.
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$.extend(question.params.behaviour, override);
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}
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question.params = question.params || {};
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question.params.overrideSettings = question.params.overrideSettings || {};
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question.params.overrideSettings.$confirmationDialogParent = $template.last();
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question.params.overrideSettings.instance = this;
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var questionInstance = H5P.newRunnable(question, contentId, undefined, undefined, {parent: self});
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questionInstance.on('resize', function () {
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up = true;
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self.trigger('resize');
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});
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questionInstances.push(questionInstance);
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}
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// Resize all interactions on resize
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self.on('resize', function () {
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if (up) {
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// Prevent resizing the question again.
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up = false;
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return;
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}
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for (var i = 0; i < questionInstances.length; i++) {
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questionInstances[i].trigger('resize');
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}
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});
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// Update button state.
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var _updateButtons = function () {
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var answered = true;
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for (var i = questionInstances.length - 1; i >= 0; i--) {
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answered = answered && (questionInstances[i]).getAnswerGiven();
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}
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if (currentQuestion === (params.questions.length - 1) && answered &&
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questionInstances[currentQuestion]) {
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questionInstances[currentQuestion].showButton('finish');
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}
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};
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var _stopQuestion = function (questionNumber) {
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if (questionInstances[questionNumber]) {
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pauseMedia(questionInstances[questionNumber]);
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}
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};
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var _showQuestion = function (questionNumber) {
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// Sanitize input.
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if (questionNumber < 0) {
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questionNumber = 0;
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}
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if (questionNumber >= params.questions.length) {
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questionNumber = params.questions.length - 1;
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}
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currentQuestion = questionNumber;
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// Hide all questions
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$('.question-container', $myDom).hide().eq(questionNumber).show();
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if (questionInstances[questionNumber]) {
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// Trigger resize on question in case the size of the QS has changed.
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var instance = questionInstances[questionNumber];
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instance.setActivityStarted();
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if (instance.$ !== undefined) {
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instance.trigger('resize');
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}
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}
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// Update progress indicator
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// Test if current has been answered.
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if (params.progressType === 'textual') {
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$('.progress-text', $myDom).text(params.texts.textualProgress.replace("@current", questionNumber+1).replace("@total", params.questions.length));
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}
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else {
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// Set currentNess
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$('.progress-dot.current', $myDom).removeClass('current');
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$('.progress-dot:eq(' + questionNumber +')', $myDom).addClass('current');
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}
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// Remember where we are
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_updateButtons();
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self.trigger('resize');
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return currentQuestion;
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};
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/**
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* Show solutions for subcontent, and hide subcontent buttons.
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* Used for contracts with integrated content.
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* @public
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*/
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var showSolutions = function () {
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for (var i = 0; i < questionInstances.length; i++) {
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try {
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questionInstances[i].showSolutions();
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}
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catch(error) {
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H5P.error("subcontent does not contain a valid showSolutions function");
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H5P.error(error);
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}
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}
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};
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/**
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* Resets the task and every subcontent task.
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* Used for contracts with integrated content.
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* @public
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*/
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var resetTask = function () {
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for (var i = 0; i < questionInstances.length; i++) {
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try {
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questionInstances[i].resetTask();
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}
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catch(error) {
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H5P.error("subcontent does not contain a valid resetTask function");
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H5P.error(error);
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}
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}
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// Hide finish button
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questionInstances[questionInstances.length - 1].hideButton('finish');
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// Mark all tasks as unanswered:
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$('.progress-dot').removeClass('answered').addClass('unanswered');
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//Force the last page to be reRendered
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rendered = false;
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};
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var rendered = false;
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this.reRender = function () {
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rendered = false;
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};
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var moveQuestion = function (direction) {
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_stopQuestion(currentQuestion);
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if (currentQuestion + direction >= questionInstances.length) {
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_displayEndGame();
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}
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else {
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_showQuestion(currentQuestion + direction);
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}
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};
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var _displayEndGame = function () {
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if (rendered) {
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$myDom.children().hide().filter('.questionset-results').show();
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self.trigger('resize');
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return;
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}
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//Remove old score screen.
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$myDom.children().hide().filter('.questionset-results').remove();
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rendered = true;
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// Get total score.
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var finals = self.getScore();
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var totals = self.totalScore();
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var scoreString = params.endGame.scoreString.replace("@score", finals).replace("@total", totals);
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var success = ((100 * finals / totals) >= params.passPercentage);
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var eventData = {
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score: scoreString,
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passed: success
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};
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/**
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* Makes our buttons behave like other buttons.
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*
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* @private
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* @param {string} classSelector
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* @param {function} handler
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*/
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var hookUpButton = function (classSelector, handler) {
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$(classSelector, $myDom).click(handler).keypress(function (e) {
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if (e.which === 32) {
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handler();
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e.preventDefault();
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}
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});
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};
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var displayResults = function () {
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self.triggerXAPICompleted(self.getScore(), self.totalScore(), success);
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var eparams = {
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message: params.endGame.showResultPage ? params.endGame.message : params.endGame.noResultMessage,
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comment: params.endGame.showResultPage ? (success ? params.endGame.successGreeting : params.endGame.failGreeting) : undefined,
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resulttext: params.endGame.showResultPage ? (success ? params.endGame.successComment : params.endGame.failComment) : undefined,
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finishButtonText: params.endGame.finishButtonText,
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solutionButtonText: params.endGame.solutionButtonText,
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retryButtonText: params.endGame.retryButtonText
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};
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// Show result page.
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$myDom.children().hide();
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$myDom.append(endTemplate.render(eparams));
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if (params.endGame.showResultPage) {
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// Add event handlers to summary buttons
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hookUpButton('.qs-finishbutton', function () {
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self.trigger('h5pQuestionSetFinished', eventData);
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});
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hookUpButton('.qs-solutionbutton', function () {
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showSolutions();
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$myDom.children().hide().filter('.questionset').show();
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_showQuestion(params.initialQuestion);
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});
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hookUpButton('.qs-retrybutton', function () {
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resetTask();
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$myDom.children().hide();
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var $intro = $('.intro-page', $myDom);
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if ($intro.length) {
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// Show intro
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$('.intro-page', $myDom).show();
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}
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else {
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// Show first question
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$('.questionset', $myDom).show();
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_showQuestion(params.initialQuestion);
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}
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});
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if (scoreBar === undefined) {
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scoreBar = H5P.JoubelUI.createScoreBar(totals);
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}
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scoreBar.appendTo($('.feedback-scorebar', $myDom));
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scoreBar.setScore(finals);
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$('.feedback-text', $myDom).html(scoreString);
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}
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else {
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// Remove buttons and feedback section
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$('.qs-finishbutton, .qs-solutionbutton, .qs-retrybutton, .feedback-section', $myDom).remove();
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}
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self.trigger('resize');
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};
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if (params.endGame.showAnimations) {
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var videoData = success ? params.endGame.successVideo : params.endGame.failVideo;
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if (videoData) {
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$myDom.children().hide();
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var $videoContainer = $('<div class="video-container"></div>').appendTo($myDom);
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var video = new H5P.Video({
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sources: videoData,
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fitToWrapper: true,
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controls: false,
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autoplay: false
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}, contentId);
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video.on('stateChange', function (event) {
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if (event.data === H5P.Video.ENDED) {
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displayResults();
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$videoContainer.hide();
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}
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});
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video.attach($videoContainer);
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// Resize on video loaded
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video.on('loaded', function () {
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self.trigger('resize');
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});
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video.play();
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if (params.endGame.skipButtonText) {
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$('<a class="h5p-joubelui-button h5p-button skip">' + params.endGame.skipButtonText + '</a>').click(function () {
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video.pause();
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$videoContainer.hide();
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displayResults();
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}).appendTo($videoContainer);
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}
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return;
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}
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}
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// Trigger finished event.
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displayResults();
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self.trigger('resize');
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};
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// Function for attaching the multichoice to a DOM element.
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this.attach = function (target) {
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if (this.isRoot()) {
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this.setActivityStarted();
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}
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if (typeof(target) === "string") {
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$myDom = $('#' + target);
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}
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else {
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$myDom = $(target);
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}
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// Render own DOM into target.
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$myDom.children().remove();
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$myDom.append($template);
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if (params.backgroundImage !== undefined) {
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$myDom.css({
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overflow: 'hidden',
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background: '#fff url("' + H5P.getPath(params.backgroundImage.path, contentId) + '") no-repeat 50% 50%',
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backgroundSize: '100% auto'
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});
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}
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if (params.introPage.backgroundImage !== undefined) {
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var $intro = $myDom.find('.intro-page');
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if ($intro.length) {
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var bgImg = params.introPage.backgroundImage;
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var bgImgRatio = (bgImg.height / bgImg.width);
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$intro.css({
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background: '#fff url("' + H5P.getPath(bgImg.path, contentId) + '") no-repeat 50% 50%',
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backgroundSize: 'auto 100%',
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minHeight: bgImgRatio * +window.getComputedStyle($intro[0]).width.replace('px','')
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});
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}
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}
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var registerImageLoadedListener = function (question) {
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H5P.on(question, 'imageLoaded', function () {
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self.trigger('resize');
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});
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};
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// Attach questions
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for (var i = 0; i < questionInstances.length; i++) {
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var question = questionInstances[i];
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question.attach($('.question-container:eq(' + i + ')', $myDom));
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// Listen for image resize
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registerImageLoadedListener(question);
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// Add next/finish button
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if (questionInstances[questionInstances.length -1] === question) {
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// Add finish question set button
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question.addButton('finish', params.texts.finishButton,
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moveQuestion.bind(this, 1), false);
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} else {
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// Add next question button
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question.addButton('next', '', moveQuestion.bind(this, 1), true, {
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href: '#', // Use href since this is a navigation button
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'aria-label': params.texts.nextButton
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});
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}
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// Add previous question button
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if (questionInstances[0] !== question) {
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question.addButton('prev', '', moveQuestion.bind(this, -1), true, {
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href: '#', // Use href since this is a navigation button
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'aria-label': params.texts.prevButton
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});
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}
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question.on('xAPI', function (event) {
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var shortVerb = event.getVerb();
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if (shortVerb === 'interacted' ||
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shortVerb === 'answered' ||
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shortVerb === 'attempted') {
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if (questionInstances[currentQuestion].getAnswerGiven()) {
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$('.progress-dot:eq(' + currentQuestion +')', $myDom).removeClass('unanswered').addClass('answered');
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}
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_updateButtons();
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}
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if (shortVerb === 'completed') {
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// An activity within this activity is not allowed to send completed events
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event.setVerb('answered');
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}
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if (event.data.statement.context.extensions === undefined) {
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event.data.statement.context.extensions = {};
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}
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event.data.statement.context.extensions['http://id.tincanapi.com/extension/ending-point'] = currentQuestion + 1;
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});
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}
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// Allow other libraries to add transitions after the questions have been inited
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$('.questionset', $myDom).addClass('started');
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$('.qs-startbutton', $myDom).click(function () {
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$(this).parents('.intro-page').hide();
|
|
$('.questionset', $myDom).show();
|
|
_showQuestion(params.initialQuestion);
|
|
});
|
|
|
|
// Set event listeners.
|
|
$('.progress-dot', $myDom).click(function () {
|
|
_stopQuestion(currentQuestion);
|
|
_showQuestion($(this).index());
|
|
return false;
|
|
});
|
|
|
|
// Hide all but initial Question.
|
|
_showQuestion(params.initialQuestion);
|
|
|
|
if (renderSolutions) {
|
|
showSolutions();
|
|
}
|
|
|
|
this.trigger('resize');
|
|
|
|
return this;
|
|
};
|
|
|
|
// Get current score for questionset.
|
|
this.getScore = function () {
|
|
var score = 0;
|
|
for (var i = questionInstances.length - 1; i >= 0; i--) {
|
|
score += questionInstances[i].getScore();
|
|
}
|
|
return score;
|
|
};
|
|
|
|
// Get total score possible for questionset.
|
|
this.totalScore = function () {
|
|
var score = 0;
|
|
for (var i = questionInstances.length - 1; i >= 0; i--) {
|
|
score += questionInstances[i].getMaxScore();
|
|
}
|
|
return score;
|
|
};
|
|
|
|
/**
|
|
* Gather copyright information for the current content.
|
|
*
|
|
* @returns {H5P.ContentCopyrights}
|
|
*/
|
|
this.getCopyrights = function () {
|
|
var info = new H5P.ContentCopyrights();
|
|
|
|
// Background
|
|
if (params.backgroundImage !== undefined && params.backgroundImage.copyright !== undefined) {
|
|
var background = new H5P.MediaCopyright(params.backgroundImage.copyright);
|
|
background.setThumbnail(new H5P.Thumbnail(H5P.getPath(params.backgroundImage.path, contentId), params.backgroundImage.width, params.backgroundImage.height));
|
|
info.addMedia(background);
|
|
}
|
|
|
|
// Questions
|
|
var questionCopyrights;
|
|
for (var i = 0; i < questionInstances.length; i++) {
|
|
var instance = questionInstances[i];
|
|
var qParams = params.questions[i].params;
|
|
questionCopyrights = undefined;
|
|
|
|
if (instance.getCopyrights !== undefined) {
|
|
// Use the instance's own copyright generator
|
|
questionCopyrights = instance.getCopyrights();
|
|
}
|
|
if (questionCopyrights === undefined) {
|
|
// Create a generic flat copyright list
|
|
questionCopyrights = new H5P.ContentCopyrights();
|
|
H5P.findCopyrights(questionCopyrights, qParams, contentId);
|
|
}
|
|
|
|
// Determine label
|
|
var label = (params.texts.questionLabel + ' ' + (i + 1));
|
|
if (qParams.contentName !== undefined) {
|
|
label += ': ' + qParams.contentName;
|
|
}
|
|
else if (instance.getTitle !== undefined) {
|
|
label += ': ' + instance.getTitle();
|
|
}
|
|
questionCopyrights.setLabel(label);
|
|
|
|
// Add info
|
|
info.addContent(questionCopyrights);
|
|
}
|
|
|
|
// Success video
|
|
var video;
|
|
if (params.endGame.successVideo !== undefined && params.endGame.successVideo.length > 0) {
|
|
video = params.endGame.successVideo[0];
|
|
if (video.copyright !== undefined) {
|
|
info.addMedia(new H5P.MediaCopyright(video.copyright));
|
|
}
|
|
}
|
|
|
|
// Fail video
|
|
if (params.endGame.failVideo !== undefined && params.endGame.failVideo.length > 0) {
|
|
video = params.endGame.failVideo[0];
|
|
if (video.copyright !== undefined) {
|
|
info.addMedia(new H5P.MediaCopyright(video.copyright));
|
|
}
|
|
}
|
|
|
|
return info;
|
|
};
|
|
this.getQuestions = function() {
|
|
return questionInstances;
|
|
};
|
|
this.showSolutions = function() {
|
|
renderSolutions = true;
|
|
};
|
|
|
|
/**
|
|
* Stop the given element's playback if any.
|
|
*
|
|
* @param {object} instance
|
|
*/
|
|
var pauseMedia = function (instance) {
|
|
try {
|
|
if (instance.pause !== undefined &&
|
|
(instance.pause instanceof Function ||
|
|
typeof instance.pause === 'function')) {
|
|
instance.pause();
|
|
}
|
|
}
|
|
catch (err) {
|
|
// Prevent crashing, log error.
|
|
H5P.error(err);
|
|
}
|
|
};
|
|
};
|
|
|
|
H5P.QuestionSet.prototype = Object.create(H5P.EventDispatcher.prototype);
|
|
H5P.QuestionSet.prototype.constructor = H5P.QuestionSet;
|