Sindbad~EG File Manager
import { addResizeListener } from 'detect-resize';
H5P.BranchingScenario.LibraryScreen = (function () {
/**
* LibraryScreen
*
* @param {BranchingScenario} parent BranchingScenario object
* @param {string} courseTitle Title
* @param {Object} library H5P Library Data
* @return {LibraryScreen} A screen oject
*/
function LibraryScreen(parent, courseTitle, library) {
const self = this;
H5P.EventDispatcher.call(this);
this.parent = parent;
this.currentLibraryElement;
this.currentLibraryInstance;
this.currentLibraryId = 0;
this.nextLibraryId = library.nextContentId;
this.libraryFeedback = library.feedback;
this.nextLibraries = {};
this.libraryInstances = {};
this.libraryFinishingRequirements = [];
this.libraryTitle;
this.branchingQuestions = [];
this.navButton;
this.header;
this.isShowing = false;
this.contentOverlays = [];
const contentTitle = (library.type && library.type.metadata && library.type.metadata.title ? library.type.metadata.title : '');
this.wrapper = this.createWrapper(courseTitle, (contentTitle ? contentTitle : 'Untitled Content'), library.showContentTitle && contentTitle);
this.wrapper.classList.add('h5p-next-screen');
this.wrapper.classList.add('h5p-branching-hidden');
const libraryWrapper = this.createLibraryElement(library, false);
this.currentLibraryWrapper = libraryWrapper;
this.currentLibraryElement = libraryWrapper.getElementsByClassName('h5p-branching-scenario-content')[0];
this.currentLibraryInstance = this.libraryInstances[0]; // TODO: Decide whether the start screen id should be hardcoded as 0
this.createNextLibraries(library);
this.wrapper.appendChild(libraryWrapper);
/**
* Disable or enable tab indexes hidden behind overlay.
* Currently only targets the endscreen as the IV deals with the other elements.
* TODO: Since endscreen isn't always shown it should also target all the elements.
*/
self.toggleIVTabIndexes = function (index) {
var self = this.currentLibraryInstance;
const selector = 'a[href], area[href], input:not([disabled]), select:not([disabled]), textarea:not([disabled]), button:not([disabled]), iframe, object, embed, *[tabindex], *[contenteditable]';
let $tabbables = self.$container[0].querySelectorAll(selector);
if (!$tabbables) {
return;
}
for (let i = 0; i < $tabbables.length; i++) {
if (index === "-1") {
let elementTabIndex = $tabbables[i].getAttribute('tabindex');
$tabbables[i].dataset.tabindex = elementTabIndex;
$tabbables[i].setAttribute('tabindex', index);
}
else {
let tabindex = $tabbables[i].dataset.tabindex;
if ($tabbables[i].classList.contains("ui-slider-handle")) {
$tabbables[i].setAttribute('tabindex', 0);
$tabbables[i].dataset.tabindex = '';
}
else if (tabindex !== undefined) {
$tabbables[i].setAttribute('tabindex', index);
$tabbables[i].dataset.tabindex = '';
}
else {
$tabbables[i].setAttribute('tabindex', index);
}
}
}
};
/**
* Handle enterfullscreen event and resize the library instance
*/
parent.on('enterFullScreen', () => {
setTimeout(() => {
if (this.currentLibraryInstance) {
this.currentLibraryInstance.trigger('resize');
}
}, 500);
});
}
/**
* Resize wrapper to fit library
*/
LibraryScreen.prototype.handleLibraryResize = function () {
// Fullscreen always use the full height available to it
if (this.parent.isFullScreen()) {
this.currentLibraryWrapper.style.height = '';
this.wrapper.style.minHeight = '';
return;
}
this.currentLibraryWrapper.style.height = this.currentLibraryElement.clientHeight + 40 + 'px';
// NOTE: This is a brittle hardcoding of the header height
this.wrapper.style.minHeight = this.currentLibraryElement.clientHeight + 40 + 70.17 + 'px';
if (this.currentLibraryWrapper.offsetHeight < this.currentLibraryElement.scrollHeight) {
this.currentLibraryElement.tabIndex = 0;
}
};
/**
* Creates a wrapping div for the library screen
*
* @param {string} courseTitle Main title
* @param {string} libraryTitle Library specific title
* @return {HTMLElement} Wrapping div
*/
LibraryScreen.prototype.createWrapper = function (courseTitle, libraryTitle, showLibraryTitle) {
const self = this;
const parent = this.parent;
const wrapper = document.createElement('div');
const titleDiv = document.createElement('div');
titleDiv.classList.add('h5p-title-wrapper');
if (H5P.canHasFullScreen) {
const fullScreenButton = document.createElement('button');
fullScreenButton.className = 'h5p-branching-full-screen';
fullScreenButton.setAttribute('aria-label', this.parent.params.l10n.fullscreenAria);
fullScreenButton.addEventListener('click', () => {
this.trigger('toggleFullScreen');
});
titleDiv.appendChild(fullScreenButton);
}
const headers = document.createElement('div');
headers.className = 'h5p-branching-header';
const headerTitle = document.createElement('h1');
headerTitle.innerHTML = courseTitle;
headers.appendChild(headerTitle);
const headerSubtitle = document.createElement('h2');
headerSubtitle.classList.add('library-subtitle');
headerSubtitle.innerHTML = showLibraryTitle ? libraryTitle : ' ';
headerSubtitle.setAttribute('tabindex', '-1');
headerSubtitle.setAttribute('aria-label', libraryTitle);
headers.appendChild(headerSubtitle);
titleDiv.appendChild(headers);
this.libraryTitle = headerSubtitle;
const buttonWrapper = document.createElement('div');
buttonWrapper.classList.add('h5p-nav-button-wrapper');
// Append back button if at least one node has it enabled
if (parent.backwardsAllowedFlags.indexOf(true) !== -1) {
this.backButton = this.createBackButton(parent.params.l10n.backButtonText);
buttonWrapper.appendChild(this.backButton);
}
// Proceed button
const navButton = document.createElement('button');
navButton.classList.add('transition');
navButton.onclick = function () {
// Stop impatient users from breaking the view
if (parent.navigating === false) {
const hasFeedbackTitle = self.libraryFeedback.title
&& self.libraryFeedback.title.trim();
const hasFeedbackSubtitle = self.libraryFeedback.subtitle
&& self.libraryFeedback.subtitle.trim();
const hasFeedback = !!(hasFeedbackTitle
|| hasFeedbackSubtitle
|| self.libraryFeedback.image
);
if (hasFeedback && self.nextLibraryId !== -1) {
// Add an overlay if it doesn't exist yet
if (self.overlay === undefined) {
self.overlay = document.createElement('div');
self.overlay.className = 'h5p-branching-scenario-overlay';
self.wrapper.appendChild(self.overlay);
self.hideBackgroundFromReadspeaker();
}
const branchingQuestion = document.createElement('div');
branchingQuestion.classList.add('h5p-branching-question-wrapper');
branchingQuestion.classList.add('h5p-branching-scenario-feedback-dialog');
var questionContainer = document.createElement('div');
questionContainer.classList.add('h5p-branching-question-container');
branchingQuestion.appendChild(questionContainer);
const feedbackScreen = self.createFeedbackScreen(self.libraryFeedback, self.nextLibraryId);
questionContainer.appendChild(feedbackScreen);
questionContainer.classList.add('h5p-start-outside');
questionContainer.classList.add('h5p-fly-in');
self.currentLibraryWrapper.style.zIndex = 0;
self.wrapper.appendChild(branchingQuestion);
feedbackScreen.focus();
}
else {
const nextScreen = {
nextContentId: self.nextLibraryId
};
if (!!(hasFeedback || (self.libraryFeedback.endScreenScore !== undefined))) {
nextScreen.feedback = self.libraryFeedback;
}
parent.trigger('navigated', nextScreen);
}
parent.navigating = true;
}
};
navButton.classList.add('h5p-nav-button');
this.navButton = document.createElement('button');
this.navButton.classList.add('transition');
this.navButton.addEventListener('animationend', () => {
this.parent.unanimateNavButton();
});
this.navButton.addEventListener('click', () => {
if (this.parent.proceedButtonInProgress) {
return;
}
this.parent.proceedButtonInProgress = true;
const that = this;
new Promise(resolve => {
const response = that.handleProceed();
// Wait until receive positive response
if (response) {
resolve(true);
}
}).then(() => {
that.parent.proceedButtonInProgress = false;
});
});
this.navButton.classList.add('h5p-nav-button');
this.navButton.appendChild(document.createTextNode(parent.params.l10n.proceedButtonText));
buttonWrapper.appendChild(this.navButton);
const header = document.createElement('div');
header.classList.add('h5p-screen-header');
this.header = header;
header.appendChild(titleDiv);
header.appendChild(buttonWrapper);
wrapper.appendChild(header);
const handleWrapperResize = () => {
if (this.wrapper.clientHeight > 500) {
this.wrapper.style.minHeight = this.wrapper.clientHeight + 'px';
}
};
addResizeListener(wrapper, handleWrapperResize);
// Resize container on animation end
wrapper.addEventListener("animationend", function (event) {
if (event.animationName === 'slide-in' && self.currentLibraryElement) {
parent.trigger('resize');
setTimeout(() => {
// Make the library resize then make the wrapper resize to the new library height
addResizeListener(self.currentLibraryElement, () => {
self.handleLibraryResize();
parent.trigger('resize');
});
}, 100);
}
});
return wrapper;
};
/**
* Append back button.
* @param {string} label Button label.
* @return {HTMLElement} Back button.
*/
LibraryScreen.prototype.createBackButton = function (label) {
const self = this;
const backButton = document.createElement('button');
backButton.classList.add('transition');
backButton.classList.add('h5p-back-button');
// Navigation
backButton.addEventListener('click', (event) => {
// Hide overlay popup when user is at Branching Question
if (event.currentTarget.hasAttribute("isBQ")) {
if (this.overlay) {
// TODO: When does this code every run?!
if (this.overlay.parentNode !== null) {
this.overlay.parentNode.removeChild(this.overlay);
}
this.overlay = undefined;
this.branchingQuestions.forEach(bq => {
if (bq.parentNode !== null) {
bq.parentNode.removeChild(bq);
}
});
this.showBackgroundToReadspeaker();
}
// If the BQ is at first position, we need to restart the screen when user want to go back from the 2nd screen (next screen after BQ)
if (self.parent.params.content[0].type.library.split(' ')[0] === 'H5P.BranchingQuestion' && self.parent.currentId === 0) {
self.parent.trigger('restarted');
return backButton;
}
self.parent.trigger('navigated', {
reverse: true
});
return;
}
// Stop impatient users from breaking the view
if (self.parent.navigating === true) {
return;
}
if (self.currentLibraryId === 0 && self.parent.params.content[self.parent.currentId].type.library.split(' ')[0] !== 'H5P.BranchingQuestion') {
self.parent.isReverseTransition = true;
self.parent.trigger('restarted');
return backButton;
}
self.parent.trigger('navigated', {
reverse: true
});
self.parent.navigating = true;
});
backButton.appendChild(document.createTextNode(label));
return backButton;
};
// Hande proceed to next slide.
LibraryScreen.prototype.handleProceed = function () {
let returnValue = true;
// Stop impatient users from breaking the view
if (this.parent.navigating === false) {
const hasFeedbackTitle = this.libraryFeedback.title &&
this.libraryFeedback.title.trim();
const hasFeedbackSubtitle = this.libraryFeedback.subtitle &&
this.libraryFeedback.subtitle.trim();
const hasFeedback = !!(hasFeedbackTitle ||
hasFeedbackSubtitle ||
this.libraryFeedback.image
);
if (hasFeedback && this.nextLibraryId !== -1) {
// Add an overlay if it doesn't exist yet
if (this.overlay === undefined) {
this.overlay = document.createElement('div');
this.overlay.className = 'h5p-branching-scenario-overlay';
this.wrapper.appendChild(this.overlay);
this.hideBackgroundFromReadspeaker();
}
const branchingQuestion = document.createElement('div');
branchingQuestion.classList.add('h5p-branching-question-wrapper');
branchingQuestion.classList.add('h5p-branching-scenario-feedback-dialog');
const questionContainer = document.createElement('div');
questionContainer.classList.add('h5p-branching-question-container');
branchingQuestion.appendChild(questionContainer);
const feedbackScreen = this.createFeedbackScreen(this.libraryFeedback, this.nextLibraryId);
questionContainer.appendChild(feedbackScreen);
questionContainer.classList.add('h5p-start-outside');
questionContainer.classList.add('h5p-fly-in');
this.currentLibraryWrapper.style.zIndex = 0;
setTimeout(() => {
// Small wait for safari browsers
this.wrapper.appendChild(branchingQuestion);
// After adding feedback, check whether the resize is needed or not
if (parseInt(this.currentLibraryWrapper.style.height) < questionContainer.offsetHeight) {
this.currentLibraryElement.style.height = questionContainer.offsetHeight + 'px';
this.wrapper.style.height = questionContainer.offsetHeight + 'px';
}
}, 100);
feedbackScreen.focus();
this.parent.navigating = true;
}
else {
const nextScreen = {
nextContentId: this.nextLibraryId
};
if (!!(hasFeedback || (this.libraryFeedback.endScreenScore !== undefined))) {
nextScreen.feedback = this.libraryFeedback;
}
// Allow user to naviate to next slide/library if the execution completes
const self = this;
returnValue = false;
new Promise(resolve => {
resolve(self.parent.trigger('navigated', nextScreen));
}).then(() => {
this.parent.proceedButtonInProgress = false;
this.parent.navigating = true;
});
}
}
// Return to Proceed button listener with response
if (returnValue) {
return returnValue;
}
};
LibraryScreen.prototype.createFeedbackScreen = function (feedback, nextContentId) {
const self = this;
const labelId = 'h5p-branching-feedback-title-' + LibraryScreen.idCounter++;
var wrapper = document.createElement('div');
wrapper.classList.add('h5p-branching-question');
wrapper.classList.add(feedback.image !== undefined ? 'h5p-feedback-has-image' : 'h5p-feedback-default');
wrapper.setAttribute('role', 'dialog');
wrapper.setAttribute('tabindex', '-1');
wrapper.setAttribute('aria-labelledby', labelId);
if (feedback.image !== undefined && feedback.image.path !== undefined) {
var imageContainer = document.createElement('div');
imageContainer.classList.add('h5p-branching-question');
imageContainer.classList.add('h5p-feedback-image');
var image = document.createElement('img');
image.src = H5P.getPath(feedback.image.path, self.parent.contentId);
imageContainer.appendChild(image);
wrapper.appendChild(imageContainer);
}
var feedbackContent = document.createElement('div');
feedbackContent.classList.add('h5p-branching-question');
feedbackContent.classList.add('h5p-feedback-content');
var feedbackText = document.createElement('div');
feedbackText.classList.add('h5p-feedback-content-content');
feedbackContent.appendChild(feedbackText);
var title = document.createElement('h1');
title.id = labelId;
title.innerHTML = feedback.title || '';
feedbackText.appendChild(title);
if (feedback.subtitle) {
var subtitle = document.createElement('div');
subtitle.innerHTML = feedback.subtitle || '';
feedbackText.appendChild(subtitle);
}
var navButton = document.createElement('button');
navButton.onclick = function () {
self.parent.trigger('navigated', {
nextContentId
});
};
var text = document.createTextNode(this.parent.params.l10n.proceedButtonText);
navButton.appendChild(text);
feedbackContent.appendChild(navButton);
var KEYCODE_TAB = 9;
feedbackContent.addEventListener('keydown', function (e) {
var isTabPressed = (e.key === 'Tab' || e.keyCode === KEYCODE_TAB);
if (isTabPressed) {
e.preventDefault();
return;
}
});
wrapper.appendChild(feedbackContent);
return wrapper;
};
/**
* Creates the library element and hides it if necessary
*
* @param {Object} library Library object
* @param {boolean} isNextLibrary Determines if the lirbary should be hidden for now
* @return {HTMLElement} Wrapping div for the library element
*/
LibraryScreen.prototype.createLibraryElement = function (library, isNextLibrary) {
const wrapper = document.createElement('div');
wrapper.classList.add('h5p-library-wrapper');
const libraryElement = document.createElement('div');
libraryElement.classList.add('h5p-branching-scenario-content');
this.appendRunnable(libraryElement, library.type, library.contentId);
const libraryMachineName = library.type && library.type.library.split(' ')[0];
// Content overlay required for some instances
this.contentOverlays[library.contentId] = new H5P.BranchingScenario.LibraryScreenOverlay(this);
wrapper.appendChild(this.contentOverlays[library.contentId].getDOM());
if (libraryMachineName === 'H5P.InteractiveVideo' || libraryMachineName === 'H5P.Video') {
this.contentOverlays[library.contentId].addButton(
'replay',
this.parent.params.l10n.replayButtonText,
() => {
this.handleReplayVideo(libraryMachineName, library);
}
);
this.contentOverlays[library.contentId].addButton(
'proceed',
this.parent.params.l10n.proceedButtonText,
() => {
this.handleProceedAfterVideo();
}
);
}
wrapper.appendChild(libraryElement);
if (isNextLibrary) {
wrapper.classList.add('h5p-next');
libraryElement.classList.add('h5p-branching-hidden');
}
// Special case when first node is BQ and library screen tries to display it
if (libraryMachineName === 'H5P.BranchingQuestion') {
libraryElement.classList.add('h5p-branching-hidden');
}
return wrapper;
};
LibraryScreen.prototype.handleReplayVideo = function (libraryMachineName, library) {
this.contentOverlays[this.currentLibraryId].hide();
// Hide procced button
if (this.libraryFinishingRequirements[library.contentId] === true
&& this.hasValidVideo(library)) {
this.parent.disableNavButton();
}
// sets buffering state for video
this.currentLibraryInstance.currentState = 3;
this.currentLibraryInstance.seek(0);
this.currentLibraryInstance.play();
if (libraryMachineName === 'H5P.InteractiveVideo') {
this.resetIVProgress();
}
};
/**
* Used to reset an IV after you replay it.
*/
LibraryScreen.prototype.resetIVProgress = function () {
let interactions = this.currentLibraryInstance.interactions;
interactions.forEach(function (interaction) {
interaction.resetTask();
});
let interactiveVideo = this.currentLibraryInstance;
interactiveVideo.addSliderInteractions();
if (!interactiveVideo.endscreen) {
return;
}
interactiveVideo.endscreen.update();
interactiveVideo.endscreen.$closeButton[0].click();
let ivSubmitScreenStar = this.wrapper.getElementsByClassName('h5p-star-foreground')[0];
ivSubmitScreenStar.classList.remove('h5p-star-active');
};
LibraryScreen.prototype.handleProceedAfterVideo = function () {
this.contentOverlays[this.currentLibraryId].hide();
this.handleProceed();
};
/**
* Creates a new content instance from the given content parameters and
* then attaches it the wrapper. Sets up event listeners.
*
* @param {Object} container Container the library should be appended to
* @param {Object} content Data for the library
* @param {number} id Id of the library
* @return {undefined}
*/
LibraryScreen.prototype.appendRunnable = function (container, content, id) {
const self = this;
const parent = this.parent;
const library = content.library.split(' ')[0];
if (library === 'H5P.Video') {
// Prevent video from growing endlessly since height is unlimited.
content.params.visuals.fit = false;
}
if (library === 'H5P.BranchingQuestion') {
content.params.proceedButtonText = parent.params.l10n.proceedButtonText;
}
const contentClone = H5P.jQuery.extend(true, {}, content);
this.currentMachineName = contentClone.library.split(' ', 2)[0];
// Create content instance
// Deep clone paramters to prevent modification (since they're reused each time the course is reset)
const instance = H5P.newRunnable(
contentClone,
this.parent.contentId,
H5P.jQuery(container),
true,
{
parent: this.parent,
}
);
if (
this.parent.params.content[id].forceContentFinished === 'enabled' ||
this.parent.params.content[id].forceContentFinished === 'useBehavioural' &&
this.parent.params.behaviour.forceContentFinished === true
) {
this.libraryFinishingRequirements[id] = this.forceContentFinished(instance, content.library.split(' ')[0]);
this.addFinishedListeners(instance, content.library.split(' ')[0]);
}
instance.setActivityStarted();
// Proceed to Branching Question automatically after video has ended
if (content.library.indexOf('H5P.Video ') === 0 && this.nextIsBranching(id)) {
instance.on('stateChange', function (event) {
if (event.data === H5P.Video.ENDED && self.navButton) {
self.handleProceed();
}
});
}
// Ensure that iframe is resized when image is loaded.
if (content.library.indexOf('H5P.Image') === 0) {
instance.on('loaded', function () {
self.handleLibraryResize();
self.parent.trigger('resize');
});
}
if (content.library.indexOf('H5P.Video') === 0 || content.library.indexOf('H5P.InteractiveVideo') === 0) {
const videoInstance = (content.library.indexOf('H5P.Video') === 0) ? instance : instance.video;
videoInstance.on('loaded', () => {
self.handleLibraryResize();
});
videoInstance.on('error', () => {
self.parent.enableNavButton();
});
}
instance.on('navigated', function (e) {
parent.trigger('navigated', e.data);
});
this.libraryInstances[id] = instance;
// Bubble resize events
this.bubbleUp(instance, 'resize', parent);
// Remove any fullscreen buttons
this.disableFullscreen(instance);
};
/**
* Try to stop any playback on the instance.
*
* @param {number} id Id of the instance node
*/
LibraryScreen.prototype.stopPlayback = function (id) {
const instance = this.libraryInstances[id];
if (instance) {
try {
if (instance.pause !== undefined &&
(instance.pause instanceof Function ||
typeof instance.pause === 'function')) {
instance.pause();
}
else if (instance.video !== undefined &&
instance.video.pause !== undefined &&
(instance.video.pause instanceof Function ||
typeof instance.video.pause === 'function')) {
instance.video.pause();
}
else if (instance.stop !== undefined &&
(instance.stop instanceof Function ||
typeof instance.stop === 'function')) {
instance.stop();
}
else if (instance.pauseMedia !== undefined &&
(instance.pauseMedia instanceof Function ||
typeof instance.pauseMedia === 'function') &&
instance.elementInstances[instance.currentSlideIndex]) {
for (let i = 0; i < instance.elementInstances[instance.currentSlideIndex].length; i++) {
instance.pauseMedia(instance.elementInstances[instance.currentSlideIndex][i]);
}
}
}
catch (err) {
// Prevent crashing, but tell developers there's something wrong.
H5P.error(err);
}
}
};
/* Check whether instance needs to be finished by user.
* @param {object} instance Instance of the content type.
* @param {string} library Library that's active on screen (H5P.Foo).
*/
LibraryScreen.prototype.forceContentFinished = function (instance, library) {
let forceContentFinished = false;
if (instance) {
forceContentFinished = forceContentFinished || (instance.getScore && typeof instance.getScore === 'function');
}
/*
* Some libraries need to tuned explicitly because there's no way to
* detect whether they are a "finishable" content type
*/
if (library) {
forceContentFinished = forceContentFinished || (library === 'H5P.Audio' || library === 'H5P.Video');
}
// Exceptions
if (
library === 'H5P.CoursePresentation' &&
instance &&
(instance.children.length + (instance.isTask ? 1 : 0) === 1) ||
instance.activeSurface === true
) {
forceContentFinished = false;
}
return forceContentFinished;
};
/**
* Add listeners for screen finished.
* Will require to handle some content types explicitly.
* @param {object} instance Instance of the content type.
* @param {string} library Library that's active on screen (H5P.Foo).
*/
LibraryScreen.prototype.addFinishedListeners = function (instance, library) {
const that = this;
if (typeof library !== 'string' || !instance) {
return;
}
switch (library) {
case 'H5P.CoursePresentation':
// Permit progression when final slide has been reached
instance.on('xAPI', (event) => {
if (event.data.statement.verb.display['en-US'] === 'progressed') {
const slideProgressedTo = parseInt(event.data.statement.object.definition.extensions['http://id.tincanapi.com/extension/ending-point']);
if (slideProgressedTo === instance.children.length + (instance.isTask ? 1 : 0)) {
if (this.navButton.classList.contains('h5p-disabled')) {
that.parent.enableNavButton(true);
}
}
}
});
break;
case 'H5P.InteractiveVideo':
// Permit progression when results have been submitted or video ended if no tasks
instance.on('xAPI', (event) => {
if (event.data.statement.verb.display['en-US'] === 'completed') {
that.handleVideoOver();
}
});
instance.video.on('stateChange', function (event) {
if (event.data === H5P.Video.ENDED || (event.data === H5P.Video.PLAYING && that.contentOverlays[that.currentLibraryId].hidden === false)) {
const answered = instance.interactions
.filter(interaction => interaction.getProgress() !== undefined);
// Giving opportunity to submit the answers
if (instance.hasStar && answered.length > 0) {
that.parent.enableNavButton();
}
else {
that.handleVideoOver();
}
this.pause();
}
});
break;
// Permit progression when video ended
case 'H5P.Video':
instance.on('stateChange', function (event) {
if (event.data === H5P.Video.ENDED) {
if (!that.nextIsBranching(that.currentLibraryId)) {
that.handleVideoOver();
}
// else already handled by general video listener
}
});
break;
// Permit progression when audio ended
case 'H5P.Audio':
instance.audio.on('ended', function () {
that.parent.enableNavButton();
});
break;
// Permit progression when xAPI sends "answered" or "completed"
default:
if (typeof instance.getAnswerGiven === 'function') {
instance.on('xAPI', (event) => {
if (
event.data.statement.verb.display['en-US'] === 'answered' ||
event.data.statement.verb.display['en-US'] === 'completed'
) {
that.parent.enableNavButton();
}
});
}
}
};
/**
* Handle video completed.
* Will proceed right away if next node is BQ, otherwise show intermediary overlay.
*/
LibraryScreen.prototype.handleVideoOver = function () {
if (this.nextIsBranching(this.currentLibraryId)) {
this.handleProceed();
}
else {
this.showContentOverlay();
}
this.parent.enableNavButton();
};
/**
* Show content overlay.
*/
LibraryScreen.prototype.showContentOverlay = function () {
this.contentOverlays[this.currentLibraryId].show();
};
/**
* Hide content overlay.
*/
LibraryScreen.prototype.hideContentOverlay = function () {
this.contentOverlays[this.currentLibraryId].hide();
};
/**
* Used to get XAPI data for "previous" library.
*
* @param {number} id Id of the instance node
* @return {Object} XAPI Data
*/
LibraryScreen.prototype.getXAPIData = function (id) {
if (this.libraryInstances[id] && this.libraryInstances[id].getXAPIData) {
return this.libraryInstances[id].getXAPIData();
}
};
/**
* Check if next node is a Branching Question.
*
* @param {number} id Id of node to check for.
* @return {boolean} True, if next node is BQ, else false.
*/
LibraryScreen.prototype.nextIsBranching = function (id) {
const nextContentId = (id !== undefined) ? this.parent.params.content[id].nextContentId : undefined;
return (nextContentId !== undefined && nextContentId > 0) ?
LibraryScreen.isBranching(this.parent.params.content[nextContentId]) :
false;
};
/**
* Pre-render the next libraries for smooth transitions for a specific library
* @param {Object} library Library Data
* @return {undefined}
*/
LibraryScreen.prototype.createNextLibraries = function (library) {
this.removeNextLibraries();
this.nextLibraries = {};
this.loadLibrary(library);
};
/**
* Create next library
* @param {Object} library
*/
LibraryScreen.prototype.createNextLibrary = function (library) {
this.removeNextLibraries();
this.nextLibraries = {};
this.loadLibrary(library, library.contentId);
};
/**
* Load library
*
* @param {Object} library
* @param {number} [contentId] Id of loaded library
*/
LibraryScreen.prototype.loadLibrary = function (library, contentId = null) {
const loadedContentId = contentId !== null ? contentId : library.nextContentId;
// If not a branching question, just load the next library
if (library.type.library.split(' ')[0] !== 'H5P.BranchingQuestion') {
const nextLibrary = this.parent.getLibrary(loadedContentId);
// Do nothing if the next screen is an end screen
if (nextLibrary === false) {
return;
}
// Pre-render the next library if it is not a branching question
if (nextLibrary.type && nextLibrary.type.library.split(' ')[0] !== 'H5P.BranchingQuestion') {
this.nextLibraries[loadedContentId] = this.createLibraryElement(nextLibrary, true);
this.wrapper.appendChild(this.nextLibraries[loadedContentId]);
}
}
// If it is a branching question, load all the possible libraries
else {
const alternatives = library.type.params.branchingQuestion.alternatives || [];
const ids = alternatives.map(alternative => alternative.nextContentId);
ids.forEach(nextContentId => {
const nextLibrary = this.parent.getLibrary(nextContentId);
// Do nothing if the next screen is an end screen
if (nextLibrary === false) {
return;
}
// Pre-render all the next libraries as long as they are not branching questions
if (nextLibrary.type && nextLibrary.type.library.split(' ')[0] !== 'H5P.BranchingQuestion') {
this.nextLibraries[nextContentId] = this.createLibraryElement(nextLibrary, true);
this.wrapper.appendChild(this.nextLibraries[nextContentId]);
}
});
}
};
/**
* Remove next libraries
*/
LibraryScreen.prototype.removeNextLibraries = function () {
// Remove outdated 'next' libraries
let nextLibraryElements = this.wrapper.getElementsByClassName('h5p-next');
for (let i = 0; i < nextLibraryElements.length; i++) {
nextLibraryElements[i].parentNode.removeChild(nextLibraryElements[i]);
}
};
/**
* Remove custom fullscreen buttons from sub content.
* (A bit of a hack, there should have been some sort of override…)
*
* @param {Object} instance Library instance
* @return {undefined}
*/
LibraryScreen.prototype.disableFullscreen = function (instance) {
switch (instance.libraryInfo.machineName) {
case 'H5P.CoursePresentation':
if (instance.$fullScreenButton) {
instance.$fullScreenButton.remove();
}
break;
case 'H5P.InteractiveVideo':
instance.on('controls', function () {
if (instance.controls.$fullscreen) {
instance.controls.$fullscreen.remove();
}
});
break;
}
};
/**
* Makes it easy to bubble events from child to parent
*
* @private
* @param {Object} origin Origin of the Event
* @param {string} eventName Name of the Event
* @param {Object} target Target to trigger event on
* @return {undefined}
*/
LibraryScreen.prototype.bubbleUp = function (origin, eventName, target) {
origin.on(eventName, function (event) {
// Prevent target from sending event back down
target.bubblingUpwards = true;
target.trigger(eventName, event);
// Reset
target.bubblingUpwards = false;
});
};
/**
* Checks to see if the library has a valid video (source file or external link).
* video/unknown check is to verify that external Youtube links work correctly.
*/
LibraryScreen.prototype.hasValidVideo = function (currentLibraryParams) {
const type = currentLibraryParams.type;
const videoLibrary = type.metadata.contentType;
let videoSource = videoLibrary === "Interactive Video"
? type.params.interactiveVideo.video.files
: type.params.sources;
if (type
&& (videoLibrary === "Interactive Video" || videoLibrary === 'Video')
&& videoSource
&& videoSource[0].mime
&& videoSource[0].mime !== "video/unknown"
&& ((videoSource[0].mime !== "video/webm" && videoSource[0].mime !== "video/mp4") || H5P.VideoHtml5.canPlay(videoSource))
) {
return true;
}
return false;
};
/**
* Slides the screen in and styles it as the current screen
* @return {undefined}
*/
LibraryScreen.prototype.show = function () {
const self = this;
const library = self.parent.params.content[self.currentLibraryId];
if (self.libraryFinishingRequirements[self.currentLibraryId] === true
&& (self.hasValidVideo(library) || library.type.library.split(' ')[0] === 'H5P.CoursePresentation')) {
self.contentOverlays[self.currentLibraryId].hide();
self.parent.disableNavButton();
}
self.isShowing = true;
self.wrapper.classList.add('h5p-slide-in');
self.wrapper.classList.remove('h5p-branching-hidden');
// Style as the current screen
self.wrapper.addEventListener('animationend', function (e) {
if (e.target.className === 'h5p-next-screen h5p-slide-in') {
self.wrapper.classList.remove('h5p-next-screen');
self.wrapper.classList.remove('h5p-slide-in');
self.wrapper.classList.add('h5p-current-screen');
self.parent.navigating = false;
self.wrapper.style.minHeight = self.parent.currentHeight;
self.libraryTitle.focus();
}
});
};
/**
* Slides the screen out and styles it to be hidden
* @param {boolean} skipAnimationListener Skips waiting for animation before removing
* elements. Useful when animation would not have time to run anyway.
* @return {undefined}
*/
LibraryScreen.prototype.hide = function (skipAnimationListener) {
const self = this;
self.isShowing = false;
// Remove possible alternative libaries
for (let i = 0; i < this.nextLibraries.length; i++) {
// Ensures it is hidden if remove() doesn't execute quickly enough
this.nextLibraries[i].style.display = 'none';
if (this.nextLibraries[i].parentNode !== null) {
this.nextLibraries[i].parentNode.removeChild(this.nextLibraries[i]);
}
}
// Hide overlay and branching questions
if (this.overlay) {
if (this.overlay.parentNode !== null) {
this.overlay.parentNode.removeChild(this.overlay);
}
// TODO: Does not appear to ever run...
this.overlay = undefined;
this.branchingQuestions.forEach(bq => {
if (bq.parentNode !== null) {
bq.parentNode.removeChild(bq);
}
});
}
self.wrapper.classList.add('h5p-slide-out');
function removeElements() {
self.wrapper.classList.remove('h5p-current-screen');
self.wrapper.classList.add('h5p-next-screen');
self.wrapper.classList.remove('h5p-slide-out');
self.wrapper.classList.remove('h5p-slide-out-reverse');
self.wrapper.classList.remove('h5p-slide-pseudo');
setTimeout(() => {
if (self.wrapper.parentNode !== null) {
self.wrapper.parentNode.removeChild(self.wrapper);
self.remove();
self.parent.libraryScreen = null;
self.parent.trigger('resize');
}
}, 100);
}
if (skipAnimationListener) {
setTimeout(() => {
removeElements();
}, 800);
}
else {
self.wrapper.addEventListener('animationend', removeElements);
}
};
/**
* Hides branching question if the next library 'branched to'
* is the one beneath the overlay. Basically the same as the
* 'showNextLibrary' function but without transitions
*
* @param {Object} library library data of the library beneath the overlay
* @return {undefined}
*/
LibraryScreen.prototype.hideBranchingQuestion = function (library) {
// TODO: When does this code every run?!
this.nextLibraryId = library.nextContentId;
this.libraryFeedback = library.feedback;
// Hide branching question
if (this.overlay.parentNode !== null) {
this.overlay.parentNode.removeChild(this.overlay);
}
this.overlay = undefined;
this.branchingQuestions.forEach(bq => {
if (bq.parentNode !== null) {
bq.parentNode.removeChild(bq);
}
});
// Prepare next libraries
this.createNextLibraries(library);
this.parent.navigating = false;
this.navButton.focus();
this.showBackgroundToReadspeaker();
};
LibraryScreen.prototype.hideFeedbackDialogs = function () {
if (this.overlay) {
if (this.overlay.parentNode !== null) {
this.overlay.parentNode.removeChild(this.overlay);
}
this.overlay = undefined;
this.showBackgroundToReadspeaker();
}
const wrapper = document.querySelector('.h5p-current-screen');
if (!wrapper) {
return;
}
const questionWrapper = wrapper.querySelector('.h5p-branching-question-wrapper');
if (questionWrapper) {
questionWrapper.parentNode.removeChild(questionWrapper);
}
};
/**
* Ensure that start screen can contain branching questions
* @param {boolean} isStartScreen True if resizing the start screen
*/
LibraryScreen.prototype.resizeScreen = function (isStartScreen = false) {
// Ensure start screen expands to encompass large branching questions
if (!this.questionContainer) {
return;
}
let screenWrapper = isStartScreen
? this.parent.startScreen.screenWrapper
: this.wrapper;
const paddingTop = parseInt(window.getComputedStyle(this.questionContainer, null).getPropertyValue('padding-top'), 10);
screenWrapper.style.height = (this.questionContainer.offsetHeight + paddingTop) + 'px';
};
/**
* Slides in the next library which may be either a 'normal content type' or a
* branching question
*
* @param {Object} library Library data
* @return {undefined}
*/
LibraryScreen.prototype.showNextLibrary = function (library, reverse = false) {
this.nextLibraryId = library.nextContentId;
this.libraryFeedback = library.feedback;
// Show normal h5p library
if (!LibraryScreen.isBranching(library)) {
let showProceedButtonflag = true;
// First priority - Hide navigation button first to prevent user to make unecessary clicks
if (this.libraryFinishingRequirements[library.contentId] === true
&& (this.hasValidVideo(library) || library.type.library.split(' ')[0] === 'H5P.CoursePresentation')) {
this.contentOverlays[this.currentLibraryId].hide();
this.parent.disableNavButton();
showProceedButtonflag = false;
}
// Update the title
const contentTitle = (library.type && library.type.metadata && library.type.metadata.title ? library.type.metadata.title : '');
this.libraryTitle.setAttribute('aria-label', contentTitle ? contentTitle : 'Untitled Content');
this.libraryTitle.innerHTML = (library.showContentTitle && contentTitle ? contentTitle : ' ');
if (this.currentLibraryId === library.contentId) {
// Target slide is already being displayed
this.currentLibraryWrapper.classList.add('h5p-slide-pseudo');
}
else if (reverse) {
// Slide out the current library in reverse direction
this.currentLibraryWrapper.classList.add('h5p-slide-out-reverse');
}
else {
// Slide out the current library
this.currentLibraryWrapper.classList.add('h5p-slide-out');
}
// Remove the branching questions if they exist
if (this.overlay) {
// TODO: When does this code every run?!
if (this.overlay.parentNode !== null) {
this.overlay.parentNode.removeChild(this.overlay);
}
this.overlay = undefined;
this.branchingQuestions.forEach(bq => {
if (bq.parentNode !== null) {
bq.parentNode.removeChild(bq);
}
});
this.showBackgroundToReadspeaker();
}
// Initialize library if necessary
if (!this.nextLibraries[library.contentId]) {
this.createNextLibrary(library);
}
// Slide in selected library
const libraryWrapper = this.nextLibraries[library.contentId];
if (!libraryWrapper.offsetParent) {
this.wrapper.appendChild(libraryWrapper);
}
// Move next library left of current library if sliding backwards
if (reverse) {
libraryWrapper.classList.remove('h5p-next');
libraryWrapper.classList.add('h5p-previous');
}
libraryWrapper.classList.add('h5p-slide-in');
const libraryElement = libraryWrapper.getElementsByClassName('h5p-branching-scenario-content')[0];
libraryElement.classList.remove('h5p-branching-hidden');
this.currentLibraryId = library.contentId;
this.currentLibraryInstance = this.libraryInstances[library.contentId];
if (this.currentLibraryInstance.resize) {
this.currentLibraryInstance.resize();
}
const self = this;
this.currentLibraryWrapper.addEventListener('animationend', function () {
if (self.currentLibraryWrapper.parentNode !== null) {
self.currentLibraryWrapper.parentNode.removeChild(self.currentLibraryWrapper);
}
self.currentLibraryWrapper = libraryWrapper;
self.currentLibraryWrapper.classList.remove('h5p-previous');
self.currentLibraryWrapper.classList.remove('h5p-next');
self.currentLibraryWrapper.classList.remove('h5p-slide-in');
self.currentLibraryElement = libraryWrapper.getElementsByClassName('h5p-branching-scenario-content')[0]; // TODO: Why no use 'libraryElement' ?
self.createNextLibraries(library);
self.parent.navigating = false;
self.libraryTitle.focus();
// New position to show Proceed button because sometimes user can play with the button while animation is in progress
if (showProceedButtonflag) {
self.parent.enableNavButton();
}
// Require to call resize the frame after animation completes
self.resize(new H5P.Event('resize', {
element: libraryElement
}));
});
}
else { // Show a branching question
if (this.parent.params.behaviour === true) {
this.parent.disableNavButton();
}
// Remove existing branching questions
this.branchingQuestions.forEach(bq => {
if (bq.parentNode !== null) {
bq.parentNode.removeChild(bq);
}
});
// BS could be showing start screen or library screen
const wrapper = document.querySelector('.h5p-current-screen');
// Add an overlay if it doesn't exist yet
if (this.overlay === undefined) {
this.overlay = document.createElement('div');
this.overlay.className = 'h5p-branching-scenario-overlay';
wrapper.appendChild(this.overlay);
this.hideBackgroundFromReadspeaker();
}
const buttonWrapper = document.createElement('div');
buttonWrapper.classList.add('h5p-nav-button-wrapper');
// Append back button if at least one node has it enabled
if (this.parent.backwardsAllowedFlags.indexOf(true) !== -1) {
this.bqBackButton = this.createBackButton(this.parent.params.l10n.backButtonText);
this.bqBackButton.setAttribute('isBQ', true);
// Check the back button is enable or not
if (this.parent.canEnableBackButton(library.contentId) === false) {
this.bqBackButton.classList.add('h5p-disabled');
this.bqBackButton.setAttribute('disabled', true);
}
buttonWrapper.appendChild(this.bqBackButton);
}
const branchingQuestion = document.createElement('div');
branchingQuestion.className = 'h5p-branching-question-wrapper';
this.appendRunnable(branchingQuestion, library.type, library.contentId);
wrapper.appendChild(branchingQuestion);
this.branchingQuestions.push(branchingQuestion);
const labelId = 'h5p-branching-question-title-' + LibraryScreen.idCounter++;
const questionContainer = branchingQuestion.querySelector('.h5p-branching-question-container');
this.questionContainer = questionContainer;
questionContainer.setAttribute('role', 'dialog');
questionContainer.setAttribute('tabindex', '-1');
questionContainer.setAttribute('aria-labelledby', labelId);
questionContainer.classList.add('h5p-start-outside');
questionContainer.classList.add('h5p-fly-in');
branchingQuestion.querySelector('.h5p-branching-question-title').id = labelId;
document.querySelector('.h5p-branching-question').appendChild(buttonWrapper);
this.currentLibraryWrapper.style.zIndex = 0;
/**
* Resizes the wrapper to the height of the container. If the current BQ is at the very start of the content type then resize parent wrapper
* Make exception for starting screen, so it does not cut from the top, as well as fullscreen.
*/
const isFullscreen = this.parent.isFullScreen();
const isSmallerDevice = this.parent.$container[0].classList.contains('h5p-mobile-screen');
if (this.currentLibraryWrapper.style.height === "" && !this.parent.startScreen.isShowing && !isFullscreen && !isSmallerDevice) {
this.resizeScreen();
}
else if (this.parent.startScreen.isShowing && !isFullscreen) {
// Ensure start screen expands to encompass large branching questions
this.resizeScreen(true);
}
else if (parseInt(this.currentLibraryWrapper.style.height) < questionContainer.offsetHeight) {
this.currentLibraryWrapper.style.height = questionContainer.offsetHeight + 'px';
}
this.createNextLibraries(library);
this.parent.navigating = false;
branchingQuestion.addEventListener('animationend', function () {
const firstAlternative = branchingQuestion.querySelectorAll('.h5p-branching-question-alternative')[0];
if (typeof firstAlternative !== 'undefined') {
questionContainer.focus();
}
});
}
};
LibraryScreen.prototype.hideBackgroundFromReadspeaker = function () {
this.header.setAttribute('aria-hidden', 'true');
this.currentLibraryWrapper.setAttribute('aria-hidden', 'true');
};
LibraryScreen.prototype.showBackgroundToReadspeaker = function () {
this.header.setAttribute('aria-hidden', 'false');
this.currentLibraryWrapper.setAttribute('aria-hidden', 'false');
};
LibraryScreen.prototype.getElement = function () {
return this.wrapper;
};
LibraryScreen.prototype.remove = function () {
if (this.wrapper.parentNode !== null) {
this.wrapper.parentNode.removeChild(this.wrapper);
}
};
LibraryScreen.prototype.resize = function (e) {
const instance = this.currentLibraryInstance;
const element = (e && e.data && e.data.element ? e.data.element : this.currentLibraryElement);
const isImage = (instance && instance.libraryInfo.machineName === 'H5P.Image');
const isCP = (instance && instance.libraryInfo.machineName === 'H5P.CoursePresentation');
const isHotspots = (instance && instance.libraryInfo.machineName === 'H5P.ImageHotspots');
const isVideo = (instance && instance.libraryInfo.machineName === 'H5P.Video');
const isIV = (instance && instance.libraryInfo.machineName === 'H5P.InteractiveVideo');
const hasSize = (instance && instance.width && instance.height);
const isYoutube = element.classList.contains('h5p-youtube');
const canScaleImage = ((hasSize && (isImage || isCP)) || isHotspots || isVideo);
if (canScaleImage) {
// Always reset scaling
element.style.width = '';
element.style.height = '';
if (isHotspots) {
element.style.maxWidth = '';
}
}
// Toggle full screen class for content (required for IV to resize properly)
if (this.parent.isFullScreen()) {
element.classList.add('h5p-fullscreen');
if (isIV && instance.$videoWrapper[0].firstChild.style) {
instance.videoHeight = instance.$videoWrapper[0].firstChild.style.height;
}
// Preserve aspect ratio for Image in fullscreen (since height is limited) instead of scrolling or streching
if (canScaleImage) {
const videoRect = (isVideo && this.parent.params.content[this.currentLibraryId].type.params.sources !== undefined ? element.getBoundingClientRect() : null);
// Video with no source should appear on top
if (isVideo &&
this.parent.params.content[this.currentLibraryId].type.params.sources === undefined) {
element.classList.add('h5p-video-no-source');
}
else {
element.classList.remove('h5p-video-no-source');
}
if (videoRect || isHotspots || isCP || isImage) {
const height = isHotspots ? instance.options.image.height : (isVideo ? videoRect.height : instance.height);
const width = isHotspots ? instance.options.image.width : (isCP ? instance.ratio * height : (isVideo ? videoRect.width : instance.width));
const aspectRatio = (height / width);
const targetElement = isIV ? element.lastChild : element;
const availableSpace = targetElement.getBoundingClientRect();
const availableAspectRatio = (availableSpace.height / availableSpace.width);
if (aspectRatio > availableAspectRatio) {
if (isHotspots) {
targetElement.style.maxWidth = (availableSpace.height * (width / height)) + 'px';
}
else {
targetElement.style.width = (availableSpace.height * (width / height)) + 'px';
}
}
else {
targetElement.style.height = (availableSpace.width * aspectRatio) + 'px';
if (isYoutube && element.querySelector('iframe') !== null) {
element.querySelector('iframe').style.height = (availableSpace.width * aspectRatio) + 'px';
}
}
}
}
}
else {
// Fullscreen with branching question must set wrapper size
if (this.parent.startScreen.isShowing) {
this.resizeScreen(true);
}
else if (this.overlay) {
this.resizeScreen();
}
else {
// reset wrapper height
this.wrapper.style.height = '';
}
const videoWrapperInstance = element.getElementsByClassName('h5p-video-wrapper');
if (isIV && videoWrapperInstance.length > 0) {
let videoWrapper = videoWrapperInstance[0].firstChild;
if (videoWrapper.style) {
videoWrapper.style.height = instance.videoHeight;
}
}
else if (isYoutube && element.querySelector('iframe') !== null) {
element.querySelector('iframe').style.height = '';
}
element.classList.remove('h5p-fullscreen');
}
if (instance) {
instance.trigger('resize', e);
// Must resize library screen after resizing content
this.handleLibraryResize();
}
};
/**
* Check if library is a Branching Question
*
* @param {Object} library
* @returns {boolean} True if library is a Branching Question
*/
LibraryScreen.isBranching = function (library) {
if (library && library.type && library.type.library) {
return library.type.library.indexOf('H5P.BranchingQuestion ') === 0;
}
return false;
};
LibraryScreen.idCounter = 0;
return LibraryScreen;
})();
Sindbad File Manager Version 1.0, Coded By Sindbad EG ~ The Terrorists