500 lines
16 KiB
JavaScript
500 lines
16 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-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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' <span class="progress-dot unanswered"></span>' +
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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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' <a class="prev h5p-button" title="<%= texts.prevButton %>"></a>' +
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' <a class="next h5p-button" title="<%= texts.nextButton %>"></a>' +
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' <a class="finish h5p-button"><%= texts.finishButton %></a>' +
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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="score <%= scoreclass %>">' +
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' <div class="emoticon"></div>' +
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' <div class="resulttext <%= scoreclass %>"><% if (comment) { %><h2><%= comment %></h2><% } %><%= score %><br><%= resulttext %></div>' +
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' </div>' +
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' <div class="buttons"><a class="h5p-button qs-finishbutton"><%= finishButtonText %></a><a class="h5p-button qs-solutionbutton"><%= solutionButtonText %></a><a class="h5p-button qs-retrybutton"></a></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',
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nextButton: 'Next',
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finishButton: 'Finish',
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textualProgress: 'Question: @current of @total questions'
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},
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endGame: {
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showResultPage: true,
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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 points of @total possible.',
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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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},
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override: {
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overrideButtons: false,
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overrideShowSolutionButton: false,
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overrideRetry: false
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},
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questionLabel: 'Question'
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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 $myDom;
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renderSolutions = false;
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// Instantiate question instances
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for (var i = 0; i < params.questions.length; i++) {
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var question = params.questions[i];
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// TODO: Render on init, inject in template.
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// override content parameters.
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if (params.override.overrideButtons) {
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// Extend subcontent with the overrided settings.
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$.extend(question.params.behaviour, {
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enableRetry: params.override.overrideRetry,
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enableSolutionsButton: params.override.overrideShowSolutionButton
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});
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}
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var questionInstance = H5P.newRunnable(question, contentId, undefined, undefined, {parent: self});
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questionInstances.push(questionInstance);
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questionInstance.on('resize', function() {
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self.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 === 0) {
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$('.prev.h5p-button', $myDom).hide();
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} else {
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$('.prev.h5p-button', $myDom).show();
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}
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if (currentQuestion === (params.questions.length - 1)) {
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$('.next.h5p-button', $myDom).hide();
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if (answered) {
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$('.finish.h5p-button', $myDom).show();
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}
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} else {
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$('.next.h5p-button', $myDom).show();
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$('.finish.h5p-button', $myDom).hide();
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}
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};
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var _showQuestion = function (questionNumber) {
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// Sanitize input.
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if (questionNumber < 0) {
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questionNumber = 0;
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}
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if (questionNumber >= params.questions.length) {
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questionNumber = params.questions.length - 1;
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}
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// Hide all questions
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$('.question-container', $myDom).hide().eq(questionNumber).show();
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// Trigger resize on question in case the size of the QS has changed.
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var instance = questionInstances[questionNumber];
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if (instance.$ !== undefined) {
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instance.trigger('resize');
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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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currentQuestion = questionNumber;
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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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console.log(error);
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console.log("subcontent does not contain a valid showSolutions() function");
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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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console.log(error);
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console.log("subcontent does not contain a valid resetTask() function");
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}
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}
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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 _displayEndGame = function () {
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if (rendered) {
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$myDom.children().hide().filter('.questionset-results').show();
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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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var displayResults = function () {
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self.triggerXAPICompleted(self.getScore(), self.totalScore());
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if (!params.endGame.showResultPage) {
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self.trigger('h5pQuestionSetFinished', eventData);
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return;
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}
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var eparams = {
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message: params.endGame.message,
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comment: (success ? params.endGame.successGreeting : params.endGame.failGreeting),
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score: scoreString,
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scoreclass: (success ? 'success' : 'fail'),
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resulttext: (success ? params.endGame.successComment : params.endGame.failComment),
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finishButtonText: params.endGame.finishButtonText,
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solutionButtonText: params.endGame.solutionButtonText
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};
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// Show result page.
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$myDom.children().hide();
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$myDom.append(endTemplate.render(eparams));
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$('.qs-finishbutton').click(function () {
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self.trigger('h5pQuestionSetFinished', eventData);
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});
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$('.qs-solutionbutton', $myDom).click(function () {
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showSolutions();
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$myDom.children().hide().filter('.questionset').show();
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_showQuestion(params.initialQuestion);
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});
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$('.qs-retrybutton', $myDom)
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.html(params.endGame.retryButtonText)
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.click(function () {
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resetTask();
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$myDom.children().hide().filter('.questionset').show();
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_showQuestion(params.initialQuestion);});
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};
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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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video.play();
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if (params.endGame.skipButtonText) {
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$('<a class="h5p-button skip">' + params.endGame.skipButtonText + '</a>').click(function () {
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video.pause();
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$videoContainer.hide();
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displayResults();
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}).appendTo($videoContainer);
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}
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return;
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}
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}
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// Trigger finished event.
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displayResults();
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self.trigger('resize');
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};
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// Function for attaching the multichoice to a DOM element.
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this.attach = function (target) {
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if (typeof(target) === "string") {
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$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.html(template.render(params));
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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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$intro.css({
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background: '#fff url("' + H5P.getPath(params.introPage.backgroundImage.path, contentId) + '") no-repeat 50% 50%',
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backgroundSize: '100% auto'
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});
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}
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}
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// Attach questions
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for (var i = 0; i < questionInstances.length; i++) {
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var question = questionInstances[i];
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question.attach($('.question-container:eq(' + i + ')', $myDom));
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question.on('xAPI', function (event) {
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if (event.getVerb() === 'attempted') {
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$('.progress-dot:eq(' + currentQuestion +')', $myDom).removeClass('unanswered').addClass('answered');
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_updateButtons();
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}
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});
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if (question.getAnswerGiven()) {
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$('.progress-dot:eq(' + i +')', $myDom).removeClass('unanswered').addClass('answered');
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}
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}
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// Allow other libraries to add transitions after the questions have been inited
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$('.questionset', $myDom).addClass('started');
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$('.qs-startbutton', $myDom).click(function () {
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$(this).parents('.intro-page').hide();
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$('.questionset', $myDom).removeClass('hidden');
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_showQuestion(currentQuestion);
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});
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// Set event listeners.
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$('.progress-dot', $myDom).click(function () {
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_showQuestion($(this).index());
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});
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$('.next.h5p-button', $myDom).click(function () {
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_showQuestion(currentQuestion + 1);
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});
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$('.prev.h5p-button', $myDom).click(function () {
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_showQuestion(currentQuestion - 1);
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});
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$('.finish.h5p-button', $myDom).click(function () {
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_displayEndGame();
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});
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// Hide all but initial Question.
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_showQuestion(params.initialQuestion);
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_updateButtons();
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if (renderSolutions) {
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showSolutions();
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}
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this.trigger('resize');
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return this;
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};
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// Get current score for questionset.
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this.getScore = function () {
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var score = 0;
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for (var i = questionInstances.length - 1; i >= 0; i--) {
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score += questionInstances[i].getScore();
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}
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return score;
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};
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// Get total score possible for questionset.
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this.totalScore = function () {
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var score = 0;
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for (var i = questionInstances.length - 1; i >= 0; i--) {
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score += questionInstances[i].getMaxScore();
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}
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return score;
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};
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/**
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* Gather copyright information for the current content.
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*
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* @returns {H5P.ContentCopyrights}
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*/
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this.getCopyrights = function () {
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var info = new H5P.ContentCopyrights();
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// Background
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if (params.backgroundImage !== undefined && params.backgroundImage.copyright !== undefined) {
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var background = new H5P.MediaCopyright(params.backgroundImage.copyright);
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background.setThumbnail(new H5P.Thumbnail(H5P.getPath(params.backgroundImage.path, contentId), params.backgroundImage.width, params.backgroundImage.height));
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info.addMedia(background);
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}
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// Questions
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var questionCopyrights;
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for (var i = 0; i < questionInstances.length; i++) {
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var instance = questionInstances[i];
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var qParams = params.questions[i].params;
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questionCopyrights = undefined;
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if (instance.getCopyrights !== undefined) {
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// Use the instance's own copyright generator
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questionCopyrights = instance.getCopyrights();
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}
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if (questionCopyrights === undefined) {
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// Create a generic flat copyright list
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questionCopyrights = new H5P.ContentCopyrights();
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H5P.findCopyrights(questionCopyrights, qParams, contentId);
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}
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// Determine label
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var label = (params.questionLabel + ' ' + (i + 1));
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if (qParams.contentName !== undefined) {
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label += ': ' + qParams.contentName;
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}
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else if (instance.getTitle !== undefined) {
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label += ': ' + instance.getTitle();
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}
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questionCopyrights.setLabel(label);
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// Add info
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info.addContent(questionCopyrights);
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}
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// Success video
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var video;
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if (params.endGame.successVideo !== undefined && params.endGame.successVideo.length > 0) {
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video = params.endGame.successVideo[0];
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if (video.copyright !== undefined) {
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info.addMedia(new H5P.MediaCopyright(video.copyright));
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}
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}
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// Fail video
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if (params.endGame.failVideo !== undefined && params.endGame.failVideo.length > 0) {
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video = params.endGame.failVideo[0];
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if (video.copyright !== undefined) {
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info.addMedia(new H5P.MediaCopyright(video.copyright));
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}
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}
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return info;
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};
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this.getQuestions = function() {
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return questionInstances;
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};
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this.showSolutions = function() {
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renderSolutions = true;
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};
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};
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H5P.QuestionSet.prototype = Object.create(H5P.EventDispatcher.prototype);
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H5P.QuestionSet.prototype.constructor = H5P.QuestionSet;
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