SoundCloud Custom Tracking File

SoundCloud Custom Tracking File

<script>
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/**
 * @name SoundCloudTracker
 * @desc Tracks events from the SoundCloud API! See a list of events here:
 *       http://developers.soundcloud.com/docs/api/html5-widget#events
 * @author Nate Hunzaker
 * TODO: Document player event stat object
 */

var SoundCloudTracker = function(element, events) {
	this.widget = this.api().Widget(element);
	this.events = events || {};

	this.listen();
};

SoundCloudTracker.prototype = {
	api: function() {
		return window.SC;
	},

	eventify: function(name) {
		return 'on' + name[0].toUpperCase() + name.slice(1);
	},

	makeTrigger: function(eventName) {
		var tracker = this;
		var events  = this.events;

		return function() {
			var args = Array.prototype.slice.call(arguments);

			if (events.hasOwnProperty(eventName)) {
				tracker.widget.getCurrentSound(function(sound) {
					args.push(sound);
					events[eventName].apply(tracker, args);
				});
			}
		};
	},

	eachEvent: function(callback) {
		var Events = this.api().Widget.Events;

		// buyClicked, downloadClicked, error, finish, loadProgress, sharePanelOpened,
		// pause, play, playProgress, ready, seek
		for (var e in Events) {
			if (Events.hasOwnProperty(e)) {
				callback.call(this, Events[e]);
			}
		}
	},

	listen: function() {
		this.eachEvent(function(name) {
			this.widget.bind(name, this.makeTrigger(name));
		});
	}
};

SoundCloudTracker.create = function(el, events) {
	return new SoundCloudTracker(el, events);
};

SoundCloudTracker.bootstrap = function(events) {
	var iframes = document.getElementsByTagName('iframe');
	var length  = iframes.length;
	var i       = 0;

	for (i = 0; i < length; i++) {
		if (iframes[i].src.indexOf('//w.soundcloud.com/player') > -1) {
			SoundCloudTracker.create(iframes[i], events);
		}
	}
};

// The following tracking will measure Plays, Downloads, and when tracks reach 50% and 100%.  Change the events or definitions as needed.


SoundCloudTracker.bootstrap({
	play: function(position, sound) {
        _gaq.push(['_trackEvent', 'Sound Cloud', 'Play', sound.title]);
    },
	downloadClicked: function(position, sound) {
        _gaq.push(['_trackEvent', 'Sound Cloud', 'Download', sound.title]);
    },
    playProgress: function(position, sound) {
        if (position.relativePosition > 0.5 && !this.trackedHalfWay) {
            _gaq.push(['_trackEvent', 'Sound Cloud', 'Reach 50%', sound.title]);
            this.trackedHalfWay = true;
        }
        if (position.relativePosition == 1 && !this.trackedComplete) {
            _gaq.push(['_trackEvent', 'Sound Cloud', 'Reach 100%', sound.title]);
            this.trackedComplete = true;
        }
    }
});

</script>