h5p-php-library/js/h5p-x-api.js

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var H5P = H5P || {};
// Create object where external code may register and listen for H5P Events
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H5P.externalDispatcher = new H5P.EventDispatcher();
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// EventDispatcher extensions
/**
* Helper function for triggering xAPI added to the EventDispatcher
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*
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* @param {string} verb - the short id of the verb we want to trigger
* @param {oject} extra - extra properties for the xAPI statement
*/
H5P.EventDispatcher.prototype.triggerXAPI = function(verb, extra) {
this.trigger(this.createXAPIEventTemplate(verb, extra));
};
/**
* Helper function to create event templates added to the EventDispatcher
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*
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* Will in the future be used to add representations of the questions to the
* statements.
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*
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* @param {string} verb - verb id in short form
* @param {object} extra - Extra values to be added to the statement
* @returns {Function} - XAPIEvent object
*/
H5P.EventDispatcher.prototype.createXAPIEventTemplate = function(verb, extra) {
var event = new H5P.XAPIEvent();
event.setActor();
event.setVerb(verb);
if (extra !== undefined) {
for (var i in extra) {
event.data.statement[i] = extra[i];
}
}
if (!('object' in event.data.statement)) {
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event.setObject(this);
}
if (!('context' in event.data.statement)) {
event.setContext(this);
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}
return event;
};
/**
* Helper function to create xAPI completed events
*
* DEPRECATED - USE triggerXAPIScored instead
*
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* @param {int} score - will be set as the 'raw' value of the score object
* @param {int} maxScore - will be set as the "max" value of the score object
*/
H5P.EventDispatcher.prototype.triggerXAPICompleted = function(score, maxScore) {
this.triggerXAPIScored(score, maxScore, 'completed');
};
/**
* Helper function to create scored xAPI events
*
*
* @param {int} score - will be set as the 'raw' value of the score object
* @param {int} maxScore - will be set as the "max" value of the score object
* @param {string} verb - short form of adl verb
*/
H5P.EventDispatcher.prototype.triggerXAPIScored = function(score, maxScore, verb) {
var event = this.createXAPIEventTemplate(verb);
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event.setScoredResult(score, maxScore);
this.trigger(event);
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};
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/**
* Internal H5P function listening for xAPI completed events and stores scores
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*
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* @param {function} event - xAPI event
*/
H5P.xAPICompletedListener = function(event) {
if (event.getVerb() === 'completed' && !event.getVerifiedStatementValue(['context', 'contextActivities', 'parent'])) {
var score = event.getScore();
var maxScore = event.getMaxScore();
var contentId = event.getVerifiedStatementValue(['object', 'definition', 'extensions', 'http://h5p.org/x-api/h5p-local-content-id']);
H5P.setFinished(contentId, score, maxScore);
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}
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};