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var H5P = window.H5P = window.H5P || {};
/**
* The external event dispatcher. Others, outside of H5P may register and
* listen for H5P Events here.
*
* @type {H5P.EventDispatcher}
*/
H5P.externalDispatcher = new H5P.EventDispatcher();
// EventDispatcher extensions
/**
* Helper function for triggering xAPI added to the EventDispatcher.
*
* @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.
*
* Will in the future be used to add representations of the questions to the
* statements.
*
* @param {string} verb
* Verb id in short form
* @param {Object} [extra]
* Extra values to be added to the statement
* @returns {H5P.XAPIEvent}
* Instance
*/
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)) {
event.setObject(this);
}
if (!('context' in event.data.statement)) {
event.setContext(this);
}
return event;
};
/**
* Helper function to create xAPI completed events
*
* DEPRECATED - USE triggerXAPIScored instead
*
* @deprecated
* since 1.5, use triggerXAPIScored instead.
* @param {number} score
* Will be set as the 'raw' value of the score object
* @param {number} maxScore
* will be set as the "max" value of the score object
* @param {boolean} success
* will be set as the "success" value of the result object
*/
H5P.EventDispatcher.prototype.triggerXAPICompleted = function (score, maxScore, success) {
this.triggerXAPIScored(score, maxScore, 'completed', true, success);
};
/**
* Helper function to create scored xAPI events
*
* @param {number} score
* Will be set as the 'raw' value of the score object
* @param {number} maxScore
* Will be set as the "max" value of the score object
* @param {string} verb
* Short form of adl verb
* @param {boolean} completion
* Is this a statement from a completed activity?
* @param {boolean} success
* Is this a statement from an activity that was done successfully?
*/
H5P.EventDispatcher.prototype.triggerXAPIScored = function (score, maxScore, verb, completion, success) {
var event = this.createXAPIEventTemplate(verb);
event.setScoredResult(score, maxScore, this, completion, success);
this.trigger(event);
};
H5P.EventDispatcher.prototype.setActivityStarted = function () {
if (this.activityStartTime === undefined) {
// Don't trigger xAPI events in the editor
if (this.contentId !== undefined &&
H5PIntegration.contents !== undefined &&
H5PIntegration.contents['cid-' + this.contentId] !== undefined) {
this.triggerXAPI('attempted');
}
this.activityStartTime = Date.now();
}
};
/**
* Internal H5P function listening for xAPI completed events and stores scores
*
* @param {H5P.XAPIEvent} event
*/
H5P.xAPICompletedListener = function (event) {
if ((event.getVerb() === 'completed' || event.getVerb() === 'answered') && !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);
}
};